Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS20100079508 A1
Publication typeApplication
Application numberUS 12/242,251
Publication date1 Apr 2010
Filing date30 Sep 2008
Priority date30 Sep 2008
Also published asUS20130135198, US20140132508
Publication number12242251, 242251, US 2010/0079508 A1, US 2010/079508 A1, US 20100079508 A1, US 20100079508A1, US 2010079508 A1, US 2010079508A1, US-A1-20100079508, US-A1-2010079508, US2010/0079508A1, US2010/079508A1, US20100079508 A1, US20100079508A1, US2010079508 A1, US2010079508A1
InventorsAndrew Hodge, Michael Rosenblatt
Original AssigneeAndrew Hodge, Michael Rosenblatt
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electronic devices with gaze detection capabilities
US 20100079508 A1
Abstract
An electronic device may have gaze detection capabilities that allow the device to detect when a user is looking at the device. The electronic device may implement a power management scheme using the results of gaze detection operations. When the device detects that the user has looked away from the device, the device may dim a display screen and may perform other suitable actions. The device may pause a video playback operation when the device detects that the user has looked away from the device. The device may resume the video playback operation when the device detects that the user is looking towards the device. Gaze detector circuitry may be powered down when sensor data indicates that gazed detection readings will not be reliable or are not needed.
Images(11)
Previous page
Next page
Claims(33)
1. A method for minimizing power consumption in a portable electronic device that has a display and gaze detection circuitry, the method comprising:
performing a video playback operation in which video is displayed on the display;
with the gaze detection circuitry, determining whether a user's gaze is directed towards the portable electronic device; and
when it is determined that the user's gaze is not directed towards the portable electronic device, pausing the video playback operation.
2. The method defined in claim 1 wherein determining whether the user's gaze is directed towards the portable electronic device comprises determining whether the user's gaze is directed towards the display.
3. The method defined in claim 1 further comprising:
after it has been determined that the user's gaze is not directed towards the portable electronic device, determining whether the user's gaze has returned to the portable electronic device; and
when it has been determined that the user's gaze has returned to the portable electronic device, resuming the video playback operation.
4. The method defined in claim 1 further comprising:
after it has been determined that the user's gaze is not directed towards the portable electronic device, determining whether the user's gaze has returned to the portable electronic device; and
when it has been determined that the user's gaze has returned to the portable electronic device, presenting an on-screen selectable option to resume the video playback operation.
5. The method defined in claim 1 further comprising:
when it has been determined that the user's gaze is not directed towards the portable electronic device, placing the display in an operating mode that reduces power consumption by the display.
6. The method defined in claim 5 wherein the display is at a first brightness level during the video playback operation and wherein placing the display in the operating mode comprises reducing the brightness of the display to a second brightness level.
7. The method defined in claim 6 further comprising:
after it has been determined that the user's gaze is not directed towards the portable electronic device, determining whether the user's gaze has returned to the portable electronic device; and
when it has been determined that the user's gaze has returned to the portable electronic device, increasing the brightness of the display to the first brightness level.
8. The method defined in claim 5 wherein placing the display in the operating mode that reduces power consumption comprises turning off the display.
9. A method for using a portable electronic device having an accelerometer and gaze detection circuitry, the method comprising:
with the accelerometer, determining whether a measured acceleration level for the portable electronic device has exceeded a given threshold value; and
when it has been determined that the acceleration level of the portable electronic device has exceeded the given threshold value, disabling the gaze detection circuitry.
10. The method defined in claim 9 further comprising:
after it has been determined that the acceleration level of the portable electronic device has exceeded the given threshold value, determining whether the acceleration level of the portable electronic device has dropped below a second threshold value; and
when it has been determined that the acceleration level of the portable electronic device has dropped below the second threshold value, enabling the gaze detection circuitry.
11. The method defined in claim 9 wherein the gaze detection circuitry comprises a camera that is used to determine whether the user's gaze is directed towards the portable electronic device and wherein disabling the gaze detection circuitry comprises turning off the camera.
12. A portable electronic device comprising:
an image sensor that captures images of a user; and
circuitry that processes the captured images to determine whether the user is looking at the portable electronic device, wherein the circuitry is configured to suspend captured image processing operations when user activity with the portable electronic device is detected.
13. The portable electronic device defined in claim 12 wherein the circuitry comprises at least one button and wherein the user activity comprises presses of the button by the user.
14. The portable electronic device defined in claim 12 wherein the user activity includes movement of the portable electronic device and wherein the circuitry comprises a sensor that detects the movement of the portable electronic device.
15. The portable electronic device defined in claim 12 further comprising:
a proximity sensor that detects whether any objects are within a given distance of the portable electronic device, wherein the circuitry is configured to suspend captured image processing operations when the proximity sensor detects an object within the given distance.
16. The portable electronic device defined in claim 12 further comprising:
a light sensor that measures a brightness level of ambient light, wherein the circuitry is configured to suspend captured image processing operations when the measured brightness level of ambient light is less than a given brightness level.
17. A portable electronic device comprising:
a display;
an image sensor that captures images of a user;
a user input device that receives input from the user; and
circuitry that processes the captured images to determine whether the user is looking at the portable electronic device, wherein the circuitry is configured to:
power the display at a first brightness level when it is determined that the user is looking at the portable electronic device; and
turn off the display after a given period of time has elapsed in which no input has been received from the user by the user input device, wherein the given period of time begins when it is determined that the user has looked away from the portable electronic device.
18. The portable electronic device defined in claim 17 wherein the circuitry is configured to reduce power to the display so that the display is at a second brightness level during the given period of time in which no input has been received from the user by the user input device.
19. The portable electronic device defined in claim 17 wherein the circuitry is configured to once again power the display at the first brightness level when the user input device receives input from the user.
20. The portable electronic device defined in claim 17 wherein the user input device comprises at least one button and wherein the input from the user comprises presses of the button by the user.
21. The portable electronic device defined in claim 17 wherein the circuitry is configured to suspend captured image processing operations after the given period of time has elapsed.
22. The portable electronic device defined in claim 21 wherein the circuitry is configured to resume captured image processing operations when the user input device receives input from the user.
23. A method for using a portable electronic device having a display, a user input device, and gaze detection circuitry, the method comprising:
with the gaze detection circuitry, determining whether a user's gaze is directed towards the portable electronic device;
when it is determined that the user's gaze is not directed towards the portable electronic device, reducing power to the display; and
when the user input device receives input from a user and power to the display has been reduced, increasing power to the display so that the display is at a first brightness level.
24. The method defined in claim 23 wherein reducing power to the display comprises reducing power to the display so that the display is at a second brightness level that is less than the first brightness level.
25. The method defined in claim 23 wherein reducing power to the display comprises turning off the display.
26. The method defined in claim 23 wherein reducing power to the display comprises reducing power to the display so that the display is at a second brightness level that is less than the first brightness level, the method further comprising:
after a given period of time has elapsed in which no input has been received by the user input device, turning off the display.
27. A portable electronic device comprising:
a display;
an image sensor that captures images of a user; and
circuitry that processes the captured images to determine whether the user is looking at the portable electronic device, wherein the portable electronic device is configured to operate in:
an active mode in which the display is powered at a first brightness level;
a partial standby mode in which the display is powered at a second brightness level that is less than the first brightness level; and
a full standby mode in which the display screen and at least part of the circuitry that processes the captured images are powered down.
28. The portable electronic device defined in claim 27 wherein the portable electronic device is further configured to switch from operating in the active mode to operating in the partial standby mode when the circuitry determines that the user has looked away from the portable electronic device.
29. The portable electronic device defined in claim 27 wherein the portable electronic device is further configured to switch from operating in the partial standby mode to operating in the full standby mode after a given period of time has elapsed in which no input has been received from the user by the user input device.
29. A portable electronic device comprising:
a display;
an image sensor that captures images of a user;
a processor; and
circuitry that processes the captured images to determine whether the user is looking at the portable electronic device, wherein the portable electronic device is configured to operate in:
a first mode in which the display is powered at a first brightness level; and
a second mode in which power to the display and the processor is reduced.
30. The portable electronic device defined in claim 29 wherein the first mode is an active mode, wherein the second mode is a full standby mode in the display is powered down, and wherein the portable electronic device is further configured to operate in a partial standby mode in which the display is powered at a second brightness level that is less than the first brightness level.
31. The portable electronic device defined in claim 29 wherein the processor includes a given number of processing cores, wherein, in the first mode, the processor is configured to operate using the given number of the processing cores, and wherein, in the second mode, the processor is configured to operate using fewer than the given number of the processing cores.
32. The portable electronic device defined in claim 29 wherein the processor is configured to receive a first clock in the first mode and a second clock in the second mode and wherein the first clock has a frequency that is greater than the second clock.
Description
    BACKGROUND
  • [0001]
    This invention relates generally to electronic devices, and more particularly, to electronic devices such as portable electronic devices that have gaze detection capabilities.
  • [0002]
    Electronic devices such as portable electronic devices are becoming increasingly popular. Examples of portable devices include handheld computers, cellular telephones, media players, and hybrid devices that include the functionality of multiple devices of this type. Popular portable electronic devices that are somewhat larger than traditional handheld electronic devices include laptop computers and tablet computers.
  • [0003]
    To satisfy consumer demand for small form factor portable electronic devices, manufacturers are continually striving to reduce the size of components that are used in these devices. For example, manufacturers have made attempts to miniaturize the batteries used in portable electronic devices.
  • [0004]
    An electronic device with a small battery has limited battery capacity. Unless care is taken to consume power wisely, an electronic device with a small battery may exhibit unacceptably short battery life. Techniques for reducing power consumption may be particularly important in wireless devices that support cellular telephone communications, because users of cellular telephone devices often demand long “talk” times.
  • [0005]
    Conventional portable electronic devices use various techniques for reducing their power consumption. Because display screens in electronic devices can consume relatively large amounts of power, power conservation techniques in portable electronic devices with display screens typically involve turning off the display screens at particular times. Unfortunately, conventional power conservation techniques may turn off display screens at inappropriate times, thereby interfering with a user's ability to interact with a device. Conventional techniques may also leave display screens on at inappropriate times, wasting valuable battery power.
  • [0006]
    It would therefore be desirable to be able to provide improved ways in which to conserve power in electronic devices.
  • SUMMARY
  • [0007]
    An electronic device is provided that may have gaze detection capabilities. One or more gaze detection sensors such as a camera may be used by the electronic device to determine whether a user's gaze is directed towards the electronic device (e.g., whether the user of the electronic device is looking at the electronic device). In particular, the electronic device may use gaze detection sensors to determine whether or not the user is looking at a display portion of the electronic device.
  • [0008]
    In an illustrative embodiment, the electronic device may have power management capabilities that are used to help conserve power. The electronic device may operate in two or more operating modes. One operation mode may be used to optimize performance. Another operating mode may help to extend battery life. The electronic device may use results from gaze detection operations to determine an appropriate mode in which to operate the electronic device.
  • [0009]
    For example, the electronic device may operate in an active mode when the electronic device determines, using gaze detection sensors, that the user's gaze is directed towards the electronic device and may operate in one or more standby modes when the device determines that the user's gaze is not directed towards the electronic device. When the electronic device is operating in one of the standby modes, circuitry and components such as a display screen, touch screen components, gaze detection components, and a central processing unit or CPU in the electronic device may be powered down or operated in a low-power mode to minimize power consumption in the electronic device.
  • [0010]
    With one suitable arrangement, when the electronic device is in the active mode and detects that the user has looked away from the device, the electronic device may dim or turn off a display screen. If desired, the electronic device can dim the display screen to a standby brightness level after the device has determined that the user has looked away from the device. After a given period of time has elapsed in which no user input has been received by the electronic device, the electronic device can turn off the display screen to conserve power. When the electronic device detects that the user's gaze is directed towards the electronic device, the electronic device may enter the active mode and return the display screen to an active brightness level (e.g., turn on the display screen or brighten the display screen to the active brightness level).
  • [0011]
    If desired, the electronic device may be performing an operation, while in the active mode, that is uninterrupted when the electronic device switches to operating in one of the standby modes. For example, the electronic device may be performing a music playback operation while in the active mode and, when the electronic device detects the user's gaze is not directed towards the electronic device, the electronic device may enter one of the standby modes without interrupting the music playback operation.
  • [0012]
    With one suitable arrangement, the electronic device may interrupt an operation when the electronic device begins operating in one of the standby mode. For example, the electronic device may be performing a video playback operation while in the active mode. In this example, when the electronic device detects that the user's gaze is no longer directed towards the electronic device, the electronic device may enter one of the standby modes, dim the display screen that was being used for the video playback operation, and pause the video playback operation. If desired, the electronic device may resume the video playback operation when it detects that the user has redirected their gaze towards the electronic device (e.g., towards the video screen).
  • [0013]
    In an illustrative embodiment, the electronic device may use readings from sensors such as proximity sensors, ambient light sensors, and motion sensors such as accelerometers to determine whether or not to perform gaze detection operations. For example, the electronic device may suspend gaze detection operations whenever a proximity sensor, ambient light sensor, or accelerometer indicates that gaze detection operations are inappropriate (e.g., because of an object in close proximity with the electronic device, insufficient ambient light for gaze detection sensors to detect the user's gaze, excessive vibration which may degrade the performance of gaze detection sensors, etc.).
  • [0014]
    An advantage of powering down the display is that a powered down display can help to prevent information on the display from being viewed by an unauthorized viewer. It may therefore be helpful to turn off a display when the lack of a user's gaze indicates that the user is not present to guard the device.
  • [0015]
    Further features of the invention, its nature and various advantages will be more apparent from the accompanying drawings and the following detailed description of the preferred embodiments.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0016]
    FIG. 1 is a perspective view of an illustrative portable electronic device that may have gaze detection capabilities in accordance with an embodiment of the present invention.
  • [0017]
    FIG. 2 is a schematic diagram of an illustrative portable electronic device that may have gaze detection capabilities in accordance with an embodiment of the present invention.
  • [0018]
    FIG. 3 is a state diagram of illustrative operating modes of an illustrative electronic device with gaze detection capabilities in accordance with an embodiment of the present invention.
  • [0019]
    FIG. 4 is a state diagram of illustrative operating modes of an illustrative electronic device with gaze detection capabilities during a music playback operation in accordance with an embodiment of the present invention.
  • [0020]
    FIG. 5 is a state diagram of illustrative operating modes of an illustrative electronic device with gaze detection capabilities and activity detection capabilities in accordance with an embodiment of the present invention.
  • [0021]
    FIG. 6 is a state diagram of illustrative operating modes of an illustrative electronic device with gaze detection capabilities during a video playback operation in accordance with an embodiment of the present invention.
  • [0022]
    FIG. 7 is a state diagram of illustrative operating modes of an illustrative electronic device with gaze detection and touch screen input capabilities in accordance with an embodiment of the present invention.
  • [0023]
    FIG. 8 is a state diagram of illustrative operating modes of an illustrative electronic device with gaze detection capabilities in accordance with an embodiment of the present invention.
  • [0024]
    FIG. 9 is a state diagram of illustrative operating modes of an illustrative electronic device with gaze detection capabilities and sensors such as environment sensors in accordance with an embodiment of the present invention.
  • [0025]
    FIG. 10 is a flow chart of illustrative steps involved in reducing power to displays in an electronic device in accordance with an embodiment of the present invention.
  • DETAILED DESCRIPTION
  • [0026]
    The present invention relates generally to electronic devices, and more particularly, to electronic devices such as portable electronic devices that have gaze detection capabilities.
  • [0027]
    With one suitable arrangement, an electronic device with gaze detection capabilities may have the ability to determine whether a user's gaze is within a given boundary without resolving the specific location of the user's gaze within that boundary. The electronic device, as an example, may be able to detect whether a user's gaze is directed towards a display associated with the device. With another suitable arrangement, an electronic device may have gaze tracking capabilities. Gaze tracking capabilities allow the electronic device to determine not only whether or not a user's gaze is directed towards a display associated with the device but also which portion of the display the user's gaze is directed towards.
  • [0028]
    An electronic device may be used to detect a user's gaze and adjust its behavior according to whether or not the user's gaze is detected. For example, the electronic device may be able to detect whether or not the user is looking at the device and adjust power management settings accordingly. With one suitable arrangement, the electronic device may delay turning device components off (e.g., components which would otherwise be turned off as part of a power management scheme) while the user's gaze is directed towards the device and the electronic device may accelerate the shutdown of device components when the user's gaze is not detected. For example, when the user's gaze is detected, a device with a display may keep the display at normal brightness rather than dimming the display and, when the device detects the user is no longing looking at the device, the device may dim or turn off the display. This type of arrangement may be especially beneficial in situations in which the user is not actively controlling the electronic device (e.g., the user is not pressing buttons or supplying touch screen inputs) but is still interacting with the electronic device (e.g., the user is reading text on the display, watching video on the display, etc.). An advantage of turning off the display when the user is not looking at the display is this may help prevent unauthorized users from viewing information on the display, thereby enhancing device security.
  • [0029]
    Electronic devices that have gaze detection capabilities may be portable electronic devices such as laptop computers or small portable computers of the type that are sometimes referred to as ultraportables. Portable electronic devices may also be somewhat smaller devices. Examples of smaller portable electronic devices include wrist-watch devices, pendant devices, headphone and earpiece devices, and other wearable and miniature devices. With one suitable arrangement, the portable electronic devices may be wireless electronic devices.
  • [0030]
    The wireless electronic devices may be, for example, handheld wireless devices such as cellular telephones, media players with wireless communications capabilities, handheld computers (also sometimes called personal digital assistants), global positioning system (GPS) devices, and handheld gaming devices. The wireless electronic devices may also be hybrid devices that combine the functionality of multiple conventional devices. Examples of hybrid portable electronic devices include a cellular telephone that includes media player functionality, a gaming device that includes a wireless communications capability, a cellular telephone that includes game and email functions, and a portable device that receives email, supports mobile telephone calls, has music player functionality, and supports web browsing. These are merely illustrative examples.
  • [0031]
    An illustrative portable electronic device in accordance with an embodiment of the present invention is shown in FIG. 1. User device 10 may be any suitable electronic device such as a portable or handheld electronic device. Device 10 of FIG. 1 may be, for example, a handheld electronic device that supports 2G and/or 3G cellular telephone and data functions, global positioning system capabilities or other satellite navigation capabilities, and local wireless communications capabilities (e.g., IEEE 802.11 and Bluetooth®) and that supports handheld computing device functions such as internet browsing, email and calendar functions, games, music player functionality, etc.
  • [0032]
    Device 10 may have a housing 12. Display 16 may be attached to housing 12 using bezel 14. Display 16 may be a touch screen liquid crystal display (as an example). Display 16 may have pixels that can be controlled individually in connection with power consumption adjustments. For example, in an organic light emitting diode (OLED) display, power can be reduced by making full and/or partial brightness reductions to some or all of the pixels. Display 16 may be formed from a panel subsystem and a backlight subsystem. For example, display 16 may have a liquid crystal display (LCD) panel subsystem and a light emitting diode or fluorescent tube backlight subsystem. In backlight subsystems that contain individually controllable elements such as light emitting diodes, the brightness of the backlight elements may be selectively controlled. For example, the brightness of some of the backlight elements may be reduced while the other backlight elements remain fully powered. In backlight subsystems that contain a single backlight element, the power of the single element may be partially or fully reduced to reduce power consumption. It may also be advantageous to make power adjustments to the circuitry that drives the LCD panel subsystem.
  • [0033]
    Display screen 16 (e.g., a touch screen) is merely one example of an input-output device that may be used with electronic device 10. If desired, electronic device 10 may have other input-output devices. For example, electronic device 10 may have user input control devices such as button 19, and input-output components such as port 20 and one or more input-output jacks (e.g., for audio and/or video). Button 19 may be, for example, a menu button. Port 20 may contain a 30-pin data connector (as an example). Openings 22 and 24 may, if desired, form speaker and microphone ports. Speaker port 22 may be used when operating device 10 in speakerphone mode. Opening 23 may also form a speaker port. For example, speaker port 23 may serve as a telephone receiver that is placed adjacent to a user's ear during operation. In the example of FIG. 1, display screen 16 is shown as being mounted on the front face of handheld electronic device 10, but display screen 16 may, if desired, be mounted on the rear face of handheld electronic device 10, on a side of device 10, on a flip-up portion of device 10 that is attached to a main body portion of device 10 by a hinge (for example), or using any other suitable mounting arrangement.
  • [0034]
    A user of electronic device 10 may supply input commands using user input interface devices such as button 19 and touch screen 16. Suitable user input interface devices for electronic device 10 include buttons (e.g., alphanumeric keys, power on-off, power-on, power-off, and other specialized buttons, etc.), a touch pad, pointing stick, or other cursor control device, a microphone for supplying voice commands, or any other suitable interface for controlling device 10. Buttons such as button 19 and other user input interface devices may generally be formed on any suitable portion of electronic device 10. For example, a button such as button 19 or other user interface control may be formed on the side of electronic device 10. Buttons and other user interface controls can also be located on the top face, rear face, or other portion of device 10. If desired, device 10 can be controlled remotely (e.g., using an infrared remote control, a radio-frequency remote control such as a Bluetooth® remote control, etc.).
  • [0035]
    If desired, device 10 may contain sensors such as a proximity sensor and an ambient light sensor. A proximity sensor may be used to detect when device 10 is close to a user's head or other object. An ambient light sensor may be used to make measurements of current light levels.
  • [0036]
    Device 10 may have a camera or other optical sensor such as camera 30 that can be used for gaze detection operations. Cameras used for gaze detection may, for example, be used by device 10 to capture images of a user's face that are processed by device 10 to detect where the user's gaze is directed. Camera 30 may be integrated into housing 12. While shown as being formed on the top face of electronic device 10 in the example of FIG. 1, cameras such as camera 30 may generally be formed on any suitable portion of electronic device 10. For example, camera 30 may be mounted on a flip-up portion of device 10 that is attached to a main body portion of device 10 by a hinge or may be mounted between the flip-up portion of device 10 and the main body portion of device 10 (e.g., in the hinge region between the flip-up portion and the main body portion such that the camera can be used regardless of whether the device is flipped open or is closed). Device 10 may also have additional cameras (e.g., device 10 may have camera 30 on the top face of device 10 for gaze detection operations and another camera on the bottom face of device 10 for capturing images and video).
  • [0037]
    If desired, the gaze detection functions of camera 30 may be implemented using an optical sensor that has been optimized for gaze detection operations. For example, camera 30 may include one or more light emitting diodes (LED's) and an optical sensor capable of detecting reflections of light emitted from the LEDs off of the users' eyes when the users are gazing at device 10. The light emitting diodes may emit a modulated infrared light and the optical sensor may be synchronized to detect reflections of the modulated infrared light, as an example. In general, any suitable gaze detection image sensor and circuitry may be used for supporting gaze detection operations in device 10. The use of camera 30 is sometimes described herein as an example.
  • [0038]
    A schematic diagram of an embodiment of an illustrative portable electronic device such as a handheld electronic device is shown in FIG. 2. Portable device 10 may be a mobile telephone, a mobile telephone with media player capabilities, a handheld computer, a remote control, a game player, a global positioning system (GPS) device, a laptop computer, a tablet computer, an ultraportable computer, a hybrid device that includes the functionality of some or all of these devices, or any other suitable portable electronic device.
  • [0039]
    As shown in FIG. 2, device 10 may include storage 34. Storage 34 may include one or more different types of storage such as hard disk drive storage, nonvolatile memory (e.g., flash memory or other electrically-programmable-read-only memory), volatile memory (e.g., battery-based static or dynamic random-access-memory), etc.
  • [0040]
    Processing circuitry 36 may be used to control the operation of device 10. Processing circuitry 36 may be based on a processor such as a microprocessor and other suitable integrated circuits. With one suitable arrangement, processing circuitry 36 and storage 34 are used to run software on device 10, such as gaze detection applications, internet browsing applications, voice-over-internet-protocol (VOIP) telephone call applications, email applications, media playback applications, navigation functions, map functions, operating system functions, power management functions, etc. Processing circuitry 36 and storage 34 may be used in implementing suitable communications protocols. Communications protocols that may be implemented using processing circuitry 36 and storage 34 include internet protocols, wireless local area network protocols (e.g., IEEE 802.11 protocols—sometimes referred to as Wi-Fi®), protocols for other short-range wireless communications links such as the Bluetooth® protocol, protocols for handling 3G communications services (e.g., using wide band code division multiple access techniques), 2G cellular telephone communications protocols, etc. If desired, processing circuitry 36 may operate in a reduced power mode (e.g., circuitry 36 may be suspended or operated at a lower frequency) when device 10 enters a suitable standby mode.
  • [0041]
    Input-output devices 38 may be used to allow data to be supplied to device 10 and to allow data to be provided from device 10 to external devices. Display screen 16, camera 30, button 19, microphone port 24, speaker port 22, and dock connector port 20 are examples of input-output devices 38. In general, input-output devices 38 may include any suitable components for receiving input and/or providing output from device 10. For example, input-output devices 38 can include user input-output devices 40 such as buttons, touch screens, joysticks, click wheels, scrolling wheels, touch pads, key pads, keyboards, microphones, etc. A user can control the operation of device 10 by supplying commands through user input devices 40. Input-output device 38 may include sensors such as proximity sensors, ambient light sensors, orientation sensors, proximity sensors, and any other suitable sensors.
  • [0042]
    Input-output devices 38 may include a camera such as integrated camera 41 (e.g., a camera that is integrated into the housing of device 10) and camera 30 of FIG. 1. Cameras such as camera 41 and camera 30 may be used as part of a gaze detection system. For example, camera 41 may be used by device 10 to capture images that are processed by a gaze detection application running on processing circuitry 36 to determine whether or not a user's gaze is directed towards the device. Cameras such as camera 41 and camera 30 may, if desired, be provided with image stabilization capabilities (e.g., using feedback derived from an accelerometer, orientation sensor, or other sensor).
  • [0043]
    Display and audio devices 42 may include liquid-crystal display (LCD) screens or other screens, light-emitting diodes (LEDs), and other components that present visual information and status data. Display and audio devices 42 may also include audio equipment such as speakers and other devices for creating sound. Display and audio devices 42 may contain audio-video interface equipment such as jacks and other connectors for external headphones and monitors.
  • [0044]
    Wireless communications devices 44 may include communications circuitry such as radio-frequency (RF) transceiver circuitry formed from one or more integrated circuits, power amplifier circuitry, passive RF components, antennas, and other circuitry for handling RF wireless signals. Wireless signals can also be sent using light (e.g., using infrared communications).
  • [0045]
    Device 10 can communicate with external devices such as accessories 46, computing equipment 48, and wireless network 49, as shown by paths 50 and 51. Paths 50 may include wired and wireless paths. Path 51 may be a wireless path. Accessories 46 may include headphones (e.g., a wireless cellular headset or audio headphones) and audio-video equipment (e.g., wireless speakers, a game controller, or other equipment that receives and plays audio and video content), a peripheral such as a wireless printer or camera, etc.
  • [0046]
    Computing equipment 48 may be any suitable computer. With one suitable arrangement, computing equipment 48 is a computer that has an associated wireless access point (router) or an internal or external wireless card that establishes a wireless connection with device 10. The computer may be a server (e.g., an internet server), a local area network computer with or without internet access, a user's own personal computer, a peer device (e.g., another portable electronic device 10), or any other suitable computing equipment.
  • [0047]
    Wireless network 49 may include any suitable network equipment, such as cellular telephone base stations, cellular towers, wireless data networks, computers associated with wireless networks, etc.
  • [0048]
    A device such as device 10 that has gaze detection capabilities may use gaze detector data in implementing a power management scheme. As an example, device 10 may operate in multiple modes to conserve power and may utilize gaze detection operations to assist in determining an appropriate mode in which to operate.
  • [0049]
    With one suitable arrangement, the operational modes of device 10 may include modes such as an active mode, a partial standby mode, and a full standby mode. In these and other operational modes, device 10 may adjust the brightness of display 16 and may turn display 16 on or off whenever appropriate in order to conserve power. For example, display 16 may be at an active brightness when device 10 is in the active mode, a standby brightness when device 10 is in the partial standby mode, and may be turned off when device 10 is in the full standby mode. The standby brightness may be somewhat dimmer than the active brightness. Generally, the power consumption of display 16 and therefore device 10 will be reduced when the brightness of display 16 is reduced and when display 16 is turned off.
  • [0050]
    Consider, as an example, the scenario of FIG. 3. In mode 52 of FIG. 3, device 10 is in an active mode. In general, it is generally desirable for device 10 to be in the active mode whenever a user is actively interacting with device 10. In particular, it is desirable for display 16 to be at the active brightness level whenever the user's gaze is directed towards display 16.
  • [0051]
    When device 10 is in the active mode, a display such as display 16 may be turned on and may display an appropriate screen such as an application display screen at the active brightness level. The active brightness level may be a configurable brightness level. For example, device 10 may receive input from a user to adjust the active brightness level. In general, the active brightness level may be adjusted anywhere between the maximum brightness and minimum brightness level display 16 is capable of.
  • [0052]
    If desired, device 10 may be performing a music playback operation when device 10 is in the active mode. In the example of FIG. 3, the music playback operation may be occurring in the background of the operation of device 10 (e.g., device 10 may be performing the music playback operation while display 16 and user input device 40 are used by the user to perform additional tasks such as writing an e-mail, browsing the web, etc.).
  • [0053]
    While device 10 is in the active mode, device 10 may be performing gaze detection operations. For example, when device 10 is in the active mode, device 10 may be capturing images using camera 30 or other image sensing components at regular intervals and maybe analyzing the images using gaze detection software. Based on this analysis, the device can determine whether the user's gaze is directed towards device 10 and display 16. When device 10 is performing gaze detection operations, device 10 may be capturing images used for the gaze detection operations at any suitable interval such as thirty times per second, ten times per second, twice per second, once per second, every two seconds, every five seconds, upon occurrence of non-time-based criteria, combinations of these intervals, or at any other suitable time.
  • [0054]
    As illustrated by line 54, when device 10 detects that the user has looked away, device 10 may dim display screen 16 and may enter partial standby mode 56. Device 10 may detect that the user has diverted their gaze away from device 10 and display 16 using a gaze detection sensor such as camera 30 and gaze detection software running on the hardware of device 10. If desired, gaze detection processing may be offloaded to specialized gaze detection circuitry (e.g., circuitry in a gaze detection chip or a camera controller).
  • [0055]
    In mode 56, device 10 is in a partial standby mode. In the partial standby mode, the brightness level of display 16 may be reduced from an active brightness level to a standby brightness level to reduce the power consumption of device 10. When device 10 enters a standby mode such as the partial standby mode, some operations running on device 10 may be suspended or stopped and some operations may continue running. For example, a music playback operation may continue when device 10 enters one of its standby modes while a web browsing application may be suspended. With this type of arrangement, when a user of device 10 is listening to music through the device while browsing the web on display 16, device 10 can dim display 16 to conserve power whenever the user looks away from display 16 while continuing to play back the music that the user is listening to without interruption.
  • [0056]
    As illustrated by line 58, when device 10 detects activity, device 10 may brighten display screen 16 and may enter active mode 52. Device 10 may enter active mode 52 in response to user activity such as button press activity received through a button such as button 19 and in response to other activity such as network activity (e.g., activity received through a wired or wireless communications link). In this type of arrangement, device 10 will enter the active mode whenever a user resumes interacting with device 10.
  • [0057]
    As illustrated by FIG. 4, device 10 may implement a power management scheme that turns off display 16 based on gaze detection data. In particular, device 10 may turn off display 16 when the device detects that the user is not looking at display 16 (e.g., rather than merely dimming display 16 as in the example of FIG. 3).
  • [0058]
    In mode 60, device 10 is in an active mode. While device 10 is in the active mode, device 10 may perform gaze detection operations. Because device 10 is in the active mode, display 16 may be at an active brightness level. With one suitable arrangement, when device 10 is in active mode 60, device 10 may be displaying a screen with display 16 that is of interest to the user but which does not demand the user's constant attention. For example, when device 10 is in mode 60, device 10 may be displaying a screen such as a now playing screen associated with a music playback operation or a telephone information screen associated with a telephone operation (e.g., a new incoming call, a new outgoing call, an active call, etc.). The now playing screen may, for example, include information about the music playback operation such as a track name, album name, artist name, elapsed playback time, remaining playback time, album art, etc. and may include on-screen selectable options (e.g., when display 16 is a touch-screen display) such as play, pause, fast forward, rewind, skip ahead (e.g., to another audio track), skip back, stop, etc. A telephone information screen might include information about a telephone operation such as a current call time, the telephone number associated with a telephone call, a contact name associated with the telephone call, and an image associated with the telephone call and may include on-screen selectable options such as a keypad to enter a telephone number, a call button, an end call button, a hold button, a speakerphone button, a mute button, an add call button, a contacts button, etc.
  • [0059]
    As illustrated by line 62, when device 10 detects that the user has looked away from display 16, device 10 may turn off display 16 and may enter standby mode 64. When device 10 is in standby mode 64, device 10 may continue to perform background operations such as a music playback operation that was occurring before device 10 entered standby mode 64 (e.g., before device 10 detected that the user's gaze was diverted away from display 16). Because the application screen displayed in mode 60 is of secondary importance to the user, device 10 may turn off display 16 completely when the user looks away without disrupting the user. For example, when a user is listening to an audio track and is also viewing information associated with the audio track on a now playing screen, device 10 can turn off display 16 when the user looks away, while continuing an audio playback operation. The user's primary use of device 10 (listening to music) is not interrupted, even though the secondary use of device 10 (viewing the now playing screen) has been halted.
  • [0060]
    In mode 64, device 10 is in a standby mode. In standby mode 64, display 16 may be turned off by device 10 to conserve power. When device 10 enters standby mode 64, suitable components of device 10 may be powered down (if desired). For example, in mode 64, the power consumption of processing circuitry 36 may be reduced (e.g., by operating fewer processor cores, by reducing the computing frequency of circuitry 36, etc.). With one suitable arrangement, an operation such as a music playback operation or a telephone call may continue when device 10 is in mode 64.
  • [0061]
    As illustrated by line 66, when device 10 detects activity such as user activity, device 10 may enter active mode 60 and turn on display 16. Device 10 may enter active mode 60 in response to any suitable activity such as button press activity, network activity, and gaze detection activity (e.g., when device 10 detects that the user has directed their gaze towards device 10).
  • [0062]
    As shown in the example of FIG. 5, device 10 may implement a power management scheme that is responsive to gaze detection data and other input data (e.g., user input, network input, etc.). In the power management scheme illustrated in FIG. 5, device 10 can switch between an active mode, a partial standby mode, and a standby mode. Device 10 may power down hardware components and suspend or slow down software operations depending on the mode in which device 10 is operating. For example, when device 10 is in either of the standby modes, device 10 may reduce the number of processing cores utilized by circuitry 36 and/or may reduce the processing frequency (clock rate) of circuitry such as circuitry 36. With one suitable arrangement, device 10 may turn display 16 on at an active brightness level in the active mode, dim display 16 to a standby brightness level in the partial standby mode, and turn display 16 off in the standby mode.
  • [0063]
    In mode 68, device 10 is in an active mode. While device 10 is in the active mode, device 10 may perform gaze detection operations. Display 16 may be at the active brightness level while device 10 is in active mode 68. In mode 68, device 10 may be displaying an application display screen such as a home page, a music playback application screen, a web browsing application screen, an email application screen, etc. If desired, device 10 may also be performing a music playback operation while in mode 68 (e.g., device 10 may be performing the music playback operation as a background process as device 10 displays the application display screen).
  • [0064]
    When device 10 detects that the user has looked away from display 16 (e.g., using a gaze detection sensor such as camera 30), device 10 may dim display 16 and enter partial standby mode 72, as illustrated by line 70.
  • [0065]
    In mode 72, device 10 is in a partial standby mode. In partial standby mode 72, device 10 may dim display 16 to a partial standby brightness level to conserve power and, if desired, may place other components such as processing circuitry, wireless transceiver circuitry, etc. in a standby mode to conserve power. Certain operations may continue when device 10 enters mode 72. For example, a music playback operation or a telephone call may continue uninterrupted when device 10 enters mode 72.
  • [0066]
    Device 10 may perform gaze detection operations while in mode 72. For example, device 10 may continually capture images using camera 30 at regular intervals and may analyze the captured images using gaze detection software to determine whether the user's gaze has returned to device 10 and display 16. If desired, the rate at which device 10 captures and processes images for gaze detection operations while in mode 72 may be reduced relative to the rate at which gaze detection images are captured and processed while device is in an active mode such as mode 68 (e.g., device 10 may capture images at a rate of once every 100 milliseconds, 250 milliseconds, 500 milliseconds, 1 second, etc. in mode 72 and once every 50 milliseconds, 125 milliseconds, 250 milliseconds, 500 milliseconds, etc. in mode 68).
  • [0067]
    Device 10 may switch from partial standby mode 72 to active mode 68 whenever appropriate. For example, when device 10 detects that a user's gaze is directed towards display 16, device 10 may enter an active mode such as mode 68 (e.g., as illustrated by line 75) and may brighten display 16 to the active brightness level. Device 10 may also enter active mode 68 when device 10 detects activity such as user activity received through a button such as button 19 and network activity received through a wired or wireless communications link (e.g., as illustrated by line 74). In general, device 10 will enter active mode 68 whenever a user resumes interacting with device 10 or device 10 needs to respond to network activity. Because device 10 enters active mode 68 when device 10 detects that the user's gaze is directed towards display 16 (e.g., as illustrated by line 75), the user of device 10 need not press a button or provide other input to awaken device 10 from the partial standby state. Instead, device 10 can automatically awaken (e.g., switch to active mode 68) when device 10 detects that the user has directed their gaze towards display 16.
  • [0068]
    If desired, device 10 may operate in a standby mode such as standby mode 76 in which display 16 is turned off. For example, when device 10 is operating in partial standby mode 72 and no user activity is detected for a given period of time (e.g., within a period of time such as one second, two seconds, . . . , ten seconds, twenty seconds, thirty seconds, etc.), device 10 may enter standby mode 76 and turn off display 16. Device 10 may enter standby mode 76, as illustrated by line 79, after device 10 detects that the user has looked away (e.g., as illustrated by line 70) and after a given period of user inactivity has elapsed following the device's detection that the user looked away.
  • [0069]
    In standby mode 76, device 10 may operate with display 16 turned off. Device 10 may place suitable components into standby. For example, device 10 may turn wireless transceiver circuitry off, reduce the power consumption of processing circuitry such as circuitry 36 (e.g., by turning off selected processing cores or lowering clock rates), turn off sensors such as proximity sensors, ambient light sensors, and accelerometers, and may suspend or power down any other suitable components. If desired, certain operations may continue when device 10 enters and operates in standby mode 76. For example, a music playback operation or a telephone call may continue uninterrupted when device 10 enters mode 76.
  • [0070]
    With the arrangement of FIG. 5, as long as device 10 detects that the user's gaze is directed at the device (e.g., the user is looking at display 16), device 10 may remain in active mode 68. Device 10 may remain in active mode 68 even when no other user activity is received (e.g., when the user is not pressing a button such as button 19 or providing user input through a touch screen such as touch screen display 16). This type of arrangement may be beneficial when a user is utilizing device 10 without providing user input and would be inconvenienced by device 10 implementing power management techniques. Device 10 can override power management schemes such as dimming a display screen based on results of gaze detection operations. For example, when device 10 detects a user's gaze and is presenting the user with text or video through display 16, device 10 may override power management instructions that could otherwise reduce the power of display 16 to ensure that display 16 is not dimmed or turned off even though the user has not provided direct user input.
  • [0071]
    If desired, device 10 may continue to perform gaze detection operations when operating in standby mode 76. As illustrated by dashed line 77, device 10 may switch from standby mode 76 to active mode 68 whenever device 10 detects that a user's gaze is once again directed towards display 16.
  • [0072]
    As illustrated by line 78, when device 10 detects activity, device 10 may switch from mode 76 to active mode 68 (e.g., device 10 may turn on display 16 to the active brightness level). As an example, device 10 may enter active mode 68 in response to user activity such as button press activity received through a button such as button 19 and in response to other activity such as network activity (e.g., activity received through a wired or wireless communications link).
  • [0073]
    As illustrated in FIG. 6, device 10 may implement a power management scheme that utilizes gaze detection capabilities while executing a video playback operation (e.g., while playing video for a user). In the scheme illustrated by FIG. 6, device 10 can operate in an active mode (mode 80), a pause standby mode (e.g., a partial standby mode such as mode 84), and a standby mode (mode 90). With one suitable arrangement, device 10 may be performing a video playback operation for a user when the device is in the active mode, device 10 may pause the video playback operation and dim an associated display screen when the user looks away from the device and the device enters the pause standby mode, and device 10 may turn off the display screen (e.g., the screen used for the video playback operation) if the user does not look back towards the device within a given period of time and no other user activity is detected.
  • [0074]
    In active mode 80, device 10 is active. While device 10 is in the active mode, device 10 may perform gaze detection operations (e.g., using camera 30 and processing circuitry 36 to detect whether or not a user is gazing at display 16). While in mode 80, device 10 may perform a video playback operation. For example, device 10 may display video on display 16 and may play audio associated with the video through a speaker such as speaker 22 or through a headphone accessory such as accessory 46. Display 16 may display the video at an active brightness level (e.g., display 16 may be at a relatively bright display level).
  • [0075]
    When device 10 detects that the user has looked away from display 16 (e.g., using a gaze detection sensor such as camera 30), device 10 may dim display 16 and enter pause standby mode 84 as illustrated by line 82. As part of entering pause standby mode 84, device 10 may pause the video playback operation of mode 80. Generally, when device 10 pauses the video playback operation, device 10 will also pause an accompanying audio playback associated with the video playback operation. The user may, if desired, configure whether device 10 pauses the audio.
  • [0076]
    In mode 84, device 10 is in a pause standby mode. In pause standby mode 84, device 10 may dim display 16 to a pause standby brightness level (e.g., a partial standby brightness level) to conserve power. The video playback operation of mode 80 may be paused while device 10 is in mode 84. If desired, device 10 may place components such as processing circuitry and wireless transceiver circuitry in a standby mode while device 10 is in mode 84 (e.g., by turning off unused CPU cores or reducing clock rates).
  • [0077]
    With one suitable arrangement, device 10 may be performing gaze detection operations while in pause standby mode 84. For example, device 10 may capture images using camera 30 at regular intervals and may analyze the images using gaze detection software to continually monitor whether the user's gaze has returned to device 10 and display 16.
  • [0078]
    Device 10 may switch from pause standby mode 84 to mode 80 whenever appropriate. For example, whenever device 10 detects that a user's gaze is once again directed towards display 16, device 10 may enter an active mode such as mode 80 (e.g., as illustrated by line 86), brighten display 16 to the active brightness level, and resume the video playback operation. Device 10 may also enter mode 80 when device 10 detects activity such as user activity received through a button such as button 19 or network activity received through a wired or wireless communications link (e.g., as illustrated by dashed line 87). In general, device 10 will enter mode 80 whenever a user resumes interacting with device 10.
  • [0079]
    Because device 10 enters mode 80 when it detects that the user's gaze is directed towards display 16 (e.g., as illustrated by line 86), the user of device 10 need not press a button or provide other input to awaken device 10 from the pause standby state and resume the video playback operation of mode 80. Instead, device 10 can automatically awaken itself (e.g., switch to mode 80) and resume the video playback operation when the user directs their gaze towards display 16.
  • [0080]
    If desired, device 10 may operate in a standby mode such as standby mode 90 in which display 16 is turned off. For example, when device 10 is operating in pause standby mode 84 and no user activity is detected for a given period of time (e.g., within a period of time such as one second, two seconds, . . . , ten seconds, twenty seconds, thirty seconds, etc.), device 10 may enter standby mode 90 and turn off display 16. Because standby mode 90 involves a lower power state for device 10 then pause standby mode 84, mode 90 may sometimes referred to as full standby mode. As illustrated by line 88 in FIG. 6, device 10 may enter full standby mode 90 after device 10 detects that the user has looked away (e.g., as illustrated by line 82) and after a given period of user inactivity has elapsed following the device's detection that the user looked away.
  • [0081]
    In standby mode 90, device 10 may operate with display 16 turned off. Device 10 may also place other suitable components into standby (e.g., wireless circuitry, etc.).
  • [0082]
    With the arrangement of FIG. 6, as long as device 10 detects that the user's gaze is directed at the device (e.g., the user is looking at display 16), device 10 may remain in active mode 80 and video playback operation can continue (e.g., until the video is completed or the operation is stopped). Device 10 may remain in mode 80 even when no other user activity is being received (e.g., when the user is not pressing a button such as button 19 or providing user input through a touch screen such as touch screen display 16). This type of arrangement may be beneficial when a user is viewing a video on display 16 of device 10 without providing user input and would be inconvenienced if device 10 were to attempt to conserve power by dimming the video screen. Device 10 can pause the video playback operation when the user temporarily looks away and can then resume operation when the user returns their gaze to device 10. This allows the user of device 10 to automatically pause a video without having to provide direct user input (e.g., without selecting a pause button). The video can be paused simply by looking away from a video display such as display 16.
  • [0083]
    If desired, device 10 may continue to perform gaze detection operations when operating in standby mode 90. As illustrated by dashed line 93, device 10 may switch from standby mode 90 to active mode 80 and resume the video playback operation of mode 80 when device 10 detects that a user's gaze is again directed towards display 16.
  • [0084]
    As illustrated by line 92, when device 10 detects activity, device 10 may switch from mode 90 to active mode 80 (e.g., device 10 may turn on display 16 to the active brightness level). As an example, device 10 may enter active mode 80 in response to user activity such as button press activity received through a button such as button 19 and in response to other activity such as network activity (e.g., activity received through a wired or wireless communications link).
  • [0085]
    If desired, device 10 may automatically resume a video playback operation when the device switches to active mode 80 from a standby mode such as pause standby mode 84 or full standby mode 90. With another suitable arrangement, device 10 may present the user with an option such as an on-screen selectable option to resume the video playback operation when the device switches to active mode 80.
  • [0086]
    Device 10 may have touch screen capabilities and may implement a power management scheme using gaze detection capabilities to control the device's touch screen capabilities. With this type of scheme, which is illustrated by FIG. 7, device 10 can switch between an active mode, a partial standby mode, and a standby mode.
  • [0087]
    Touch screen functions can be adjusted to conserve power. For example, display 16 may be a touch screen display that can operate at varying speeds (e.g., a fast speed and a slow speed) or with varying levels of functionality (e.g., general touch sensitivity, localized touch sensitivity, and gesture-capable touch sensitivity). These features can be adjusted based on gaze detection data.
  • [0088]
    With one suitable arrangement, touch screen display 16 may operate at a first frequency (e.g., at a relatively high speed) when device 10 is in active mode 94 and a second frequency (e.g., a relatively low speed) when device 10 is in standby mode 104. The frequency of touch screen display 16 may be the frequency at which the touch screen scans for user input (e.g., once every 10 milliseconds, 50 milliseconds, 100 milliseconds, 200 milliseconds, etc.).
  • [0089]
    If desired, touch screen display 16 may operate at a first level of functionality when device 10 is in mode 94 and at a second level of functionality when device 10 is in mode 104. For example, when device 10 is in active mode 94, touch screen display 16 may be configured to sense the location of user input within the area of display 16. Device 10 may also be configured to sense user inputs such as multi-touch user inputs and gestures such as swipe gestures and swipe and hold gestures while in mode 94. In contrast, when device 10 is in standby mode 104, touch screen display 16 may be configured such that display 16 can sense general user input such as the presence or absence of contact without being able to resolve the location of the input. The power consumption of display 16 may be reduced when display 16 is configured in this way.
  • [0090]
    In mode 94, device 10 is in an active mode. While device 10 is in the active mode, device 10 may perform gaze detection operations. Touch screen display 16 may be operating at a relatively high frequency (e.g., in the high power mode) while device 10 is in active mode 94. With another suitable arrangement, touch screen display 16 may be operating at or near its maximum capability (e.g., touch screen display 16 may be configured to sense the location of user inputs and to sense user inputs such as multi-touch inputs and gestures). Display 16 may also be displaying an application display screen (e.g., a home page, a telephone application information page, a media player screen, etc.) at an active brightness level.
  • [0091]
    When device 10 detects that the user has looked away from display 16 (e.g., using a gaze detection sensor such as camera 30), device 10 may dim display 16 and enter partial standby mode 98, as illustrated by line 96.
  • [0092]
    In mode 98, device 10 is in a partial standby mode. In partial standby mode 98, device 10 may dim display 16 to a partial standby brightness level to conserve power and may retain the touch screen capabilities of display 16. (Alternatively, touch screen capabilities can be reduced in mode 98.)
  • [0093]
    Device 10 may switch from partial standby mode 98 to active mode 94 whenever appropriate. For example, when device 10 detects that a user's gaze is directed towards display 16, device 10 may enter an active mode such as mode 94 (e.g., as illustrated by line 100) and may brighten display 16 to the active brightness level. Device 10 may also enter active mode 94 when device 10 detects user activity (e.g., as illustrated by dashed line 99). In arrangements in which the touch screen capabilities of display 16 remain at the active mode level when device 10 is in mode 98, display 16 may be able to receive location specific user inputs (e.g., inputs specific to a particular portion of display 16) while device 10 is in mode 98.
  • [0094]
    If desired, device 10 may operate in a full standby mode such as standby mode 104 in which display 16 is turned off and the touch screen capabilities of display 16 are reduced. As an example, when device 10 is operating in partial standby mode 98 and no user activity is detected for a given period of time, device 10 may enter standby mode 104. Device 10 may enter standby mode 104 as illustrated by line 102 after device 10 detects that the user has looked away (e.g., as illustrated by line 96) and after a given period of user inactivity has elapsed following the device's detection that the user has looked away.
  • [0095]
    With another suitable arrangement, device 10 may enter standby mode 104 directly from active mode 94 when no user activity is detected for a configurable period of time (e.g., as illustrated by dashed line 108). Device 10 may enter standby mode 104 even when device 10 detects that a user's gaze is directed towards display 16. If desired, the time period of user inactivity required before device 10 enters mode 104 directly from mode 94 (e.g., when a user's gaze is still directed towards device 10) may be longer than the time period of user inactivity required before device 10 enters mode 104 from mode 98 (e.g., when the user's gaze is not directed towards device 10). For example, the inactivity period associated with the mode transition of line 108 may be one minute or more while the inactivity period associated with the mode transition of line 102 may be thirty seconds or less.
  • [0096]
    In standby mode 104, device 10 may operate with a display portion of display 16 turned off. The display portion of display 16 and a touch screen portion of display 16 may be powered and configured independently. In mode 104, device 10 may reduce the touch screen capabilities of the touch screen portion of display 16 (e.g., by reducing the frequency at which touch screen display 16 scans for user input, by configuring display 16 such that user inputs can only be sensed generally, by disabling the touch screen capabilities of display 16, etc.).
  • [0097]
    If desired, device 10 may continue to perform gaze detection operations when operating in standby mode 104. As illustrated by dashed line 105, device 10 may switch from standby mode 104 to active mode 94 when device 10 detects that a user's gaze is directed towards display 16.
  • [0098]
    As illustrated by line 106, device 10 may also switch from mode 104 to active mode 94 when activity is detected (e.g., device 10 may turn on display 16 to the active brightness level and restore the touch screen capabilities of display 16 to the active capability level).
  • [0099]
    If desired, power can be further conserved by reducing the power consumption of components such as a processor, wireless communications circuitry, etc. while in full standby mode 104 and/or partial standby mode 98. For example, when device 10 is placed in full standby mode 104 or partial standby mode 98, the clock frequency for the clock that is used to operate processing circuitry 36 (e.g., a microprocessor) may be reduced. The number of processor cores that are active in processing circuitry 36 may also be reduced. Some or all of wireless communications circuitry 44 may be placed in a low-power state or turned off. The amount of additional circuitry that is powered down when device 10 enters modes 98 and 104 may be the same or, if desired, relatively more circuitry may be powered down in full standby mode 104 than in partial standby mode 98.
  • [0100]
    In configurations in which device 10 has additional components, some or all of these components can be selectively powered down. Device 10 may have additional power down modes in which different numbers of these components have been placed in low-power states. Any suitable criteria may be used to determine when to switch device 10 between these modes. For example, gaze detection data, user input data, and/or sensor data may be used to determine an appropriate mode in which to operate device 10. Components that may be powered down in this way include proximity sensors, light sensors such as an ambient light sensor, cameras, motions sensors such as accelerometers, audio circuits, radio-frequency transceiver circuitry, radio-frequency amplifiers, audio amplifiers, serial and parallel port communications circuits, thermal sensors, touch-screen input devices, etc.
  • [0101]
    As illustrated by FIG. 8, device 10 can implement a power management scheme in which gaze detection circuitry is turned on or off or is otherwise adjusted in real time. In the scheme illustrated by FIG. 8, device 10 can switch between an active mode, a partial standby mode, and a standby mode.
  • [0102]
    The gaze detection capabilities of device 10 can be adjusted to conserve power depending on the mode in which device 10 is operating. For example, device 10 may perform gaze detection operations by taking images using camera 30 or other imaging circuitry at a first rate while in an active mode and at a second rate that is less than the first rate while in a standby mode. If desired, device 10 may suspend gaze detection operations while in standby. When the gaze detection operations of device 10 are slowed down (e.g., performed at the second rate) or suspended, device 10 may consume a reduced amount of power.
  • [0103]
    In mode 110, device 10 is in an active mode. While device 10 is in the active mode, device 10 may perform gaze detection operations. For example, device 10 may perform gaze detection operations by taking images at a given rate to search for a user's gaze (e.g., once every 100 milliseconds, 200 milliseconds, 250 milliseconds, 500 milliseconds, 1 second, 2 seconds, etc.). These images may then be analyzed to determine whether the user of device 10 is looking at device 10. Display 16 may simultaneously display an application display screen (e.g., a home page, a telephone application information page, a media player screen, etc.) at an active brightness level.
  • [0104]
    When device 10 detects that the user has looked away from display 16 (e.g., using a gaze detection sensor such as camera 30), device 10 may dim display 16 and enter partial standby mode 114 as illustrated by line 112.
  • [0105]
    In mode 114, device 10 is in a partial standby mode. In partial standby mode 114, device 10 may dim display 16 to a partial standby brightness level to conserve power. If desired, device 10 may also reduce the speed at which images are captured for gaze detection operations in device 10 (e.g., to a lower multiple of the rate at which gaze detection images were captured in mode 110 such as one-half, one-quarter, etc. of the rate in mode 110).
  • [0106]
    Device 10 may switch from partial standby mode 114 to active mode 110 whenever appropriate. For example, when device 10 detects that a user's gaze is directed towards display 16, device 10 may enter an active mode such as mode 110 (e.g., as illustrated by line 116) and may brighten display 16 to the active brightness level. Device 10 may also enter active mode 110 when device 10 detects user activity (e.g., as illustrated by line 118).
  • [0107]
    If desired, device 10 may operate in a full standby mode such as standby mode 122 in which display 16 is turned off and the gaze detection capabilities of device 10 are also turned off (e.g., camera 30 is turned off). As an example, when device 10 is operating in partial standby mode 114 and no user activity is detected for a given period of time, device 10 may enter standby mode 122. Device 10 may enter standby mode 122 as illustrated by line 120 after device 10 detects that the user has looked away (e.g., as illustrated by line 116) and after a given period of user inactivity has elapsed following the device's detection that the user has looked away.
  • [0108]
    In standby mode 122, device 10 may operate with display 16 turned off and with gaze detection disabled (e.g., turned off). Other circuitry may also be placed in a low-power standby mode (e.g., processing circuitry).
  • [0109]
    As illustrated by dashed line 124, when device 10 detects activity, device 10 may switch from mode 122 to active mode 110 (e.g., device 10 may turn on display 16 to the active brightness level and turn on gaze detection capabilities to determine is a user's gaze is directed towards display 16).
  • [0110]
    With one suitable arrangement, when device 10 detects activity such as user activity, the period of user inactivity detected by device 10 and associated with the mode transition of line 120 may be reset. For example, when device 10 switches from mode 122 to active mode 110 and determines that the user's gaze is not directed towards display 16, device 10 may switch to mode 114 and the given period of user inactivity associated with the mode transition of line 120 may begin anew.
  • [0111]
    The motion of device 10 can be indicative of whether device 10 is being used by a user. If desired, device 10 may use data from an accelerometer or other motion sensor in selecting its mode of operation. For example, when device 10 detects motion above a threshold level with an accelerometer, device 10 may activate gaze detection operations to determine if a user is looking at the device. Device 10 may turn on gaze detection circuitry or may temporarily activate gaze detection operations for a given period of time (e.g., one second, five seconds, etc.) whenever a motion sensor such as an accelerometer detects that a user is shaking device 10 or device 10 is otherwise in motion. With this type of arrangement, device 10 may be in standby mode. When device 10 is picked up by a user, device 10 may detect that the device is in motion using the accelerometer. Device 10 may then activate gaze detection operations and, if the user's gaze is properly detected, may switch to an active mode such as mode 68 in which display 16 is turned on.
  • [0112]
    Device 10 may also suspend gaze detection operations when appropriate. For example, when device 10 is receiving user input through an input-output device 38 (e.g., when a user is providing user input through one or more user input devices) or when device 10 has recently received user input, gaze detection operations may be suspended (e.g., camera 30 may be turned off and the execution of gaze detection software may be stopped). In this situation, the presence of user interface activity makes it unnecessary to expend extra power operating the gaze detection circuitry.
  • [0113]
    As illustrated by FIG. 9, device 10 may also use information from environmental sensors such as proximity sensors and ambient light sensors to determine whether or not to perform gaze detection operations. Environmental sensors such as these may, if desired, be used in conjunction with an environmental sensor such as an accelerometer that detects device motion.
  • [0114]
    When device 10 is performing gaze detection operations (e.g., when device 10 is operating in a mode such as mode 126), device 10 may suspend gaze detection operations whenever a sensor in device 10 indicates that gaze detection operations are inappropriate or not needed (e.g., as illustrated by line 128). With one suitable arrangement, device 10 may be able to detect when gaze detection sensors such as camera 30 would be incapable of detecting a user's gaze due to excessive vibration detected by an accelerometer. For example, device 10 may suspend gaze detection operations (e.g., device 10 may switch to operating in mode 130) in response to signals from the accelerometer in device 10 that indicate the device is shaking or otherwise moving rapidly. In this example, device 10 may switch to mode 130 when the accelerometer detects that the acceleration of device 10 exceeds a given threshold level. In another example, device 10 may be able to detect, using a proximity sensor, that gaze detection operations are inappropriate because an object is in close proximity to device 10 and is blocking the device's gaze detection sensors (e.g., such as when a user places device 10 against their ear and thereby blocks camera 30). If desired, device 10 may suspend gaze detection operations when an ambient light sensor detects that there is insufficient light in the environment around device 10 for a camera such as camera 30 to capture images in which a user's gaze could be detected. Device 10 may also deactivate a camera associated with gaze detection operations and suspend a gaze detection application running on circuitry 36 when data from one or more sensors in device 10 indicate that gaze detection operations are inappropriate or wasteful of power.
  • [0115]
    When device 10 detects that gaze detection operations may be appropriate (e.g., after the sensors no longer indicate that gaze detection operations are inappropriate), device 10 may resume gaze detection operations in mode 126, as illustrated by line 132. This type of arrangement may help device 10 to avoid performing gaze detection operations at inappropriate times, while ensuring that the power conserving functionality of the gaze detection circuitry is retained during normal device operation.
  • [0116]
    The gaze detection capabilities of device 10 may, if desired, include visual user identification capabilities (e.g., face recognition). In this type of arrangement, device 10 may distinguish between authorized users and unauthorized users based on image sensor data. For example, device 10 may recognize an authorized user and may unlock itself whenever the authorized user is detected by the device's gaze detection circuitry (e.g., camera 30). If desired, when device 10 detects that the authorized user's gaze has been diverted from device 10, device 10 may lock itself to prevent unauthorized users from using device 10. This type of user-specific gaze detection functionality may be used for all gaze detection operations if desired. By making gaze detection specific to particular users, device 10 will not inadvertently transition from standby mode to active mode if a person in the user's vicinity happens to glance at the user's device.
  • [0117]
    FIG. 10 shows steps involved in processing a command to reduce the power consumption of display 16. Power reduction commands may be processed by device 10 based on gaze detection data or any other suitable data.
  • [0118]
    As show by step 134, processing may begin with reception of a power reduction command by the processing circuitry of device 10.
  • [0119]
    Display 16 may be an OLED display or other display that has pixels that may be controlled individually. As shown by box 136, in this type of situation, device 10 may make partial or full power reduction to some or all of the pixels of display 16 in response to the received power reduction command.
  • [0120]
    Display 16 may also be formed from a panel subsystem and a backlight subsystem. For example, display 16 may have a liquid crystal display (LCD) panel subsystem and a light emitting diode or fluorescent tube backlight subsystem. In backlight subsystems that contain individually controllable elements such as light emitting diodes, the brightness of the backlight elements may be selectively controlled. For example, as shown in step 138, the brightness of some of the backlight elements may be reduced while the other backlight elements remain fully powered.
  • [0121]
    In backlight subsystems that contain a single backlight element, the power of the single element may be partially or fully reduced to reduce power consumption (step 140).
  • [0122]
    During the operations of steps 138 and 140, further power reductions may be made by adjusting circuitry that controls the LCD panel subsystem.
  • [0123]
    The foregoing is merely illustrative of the principles of this invention and various modifications can be made by those skilled in the art without departing from the scope and spirit of the invention.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US5583795 *17 Mar 199510 Dec 1996The United States Of America As Represented By The Secretary Of The ArmyApparatus for measuring eye gaze and fixation duration, and method therefor
US6526159 *31 Dec 199825 Feb 2003Intel CorporationEye tracking for resource and power management
US6661907 *7 Jun 19999 Dec 2003Canon Kabushiki KaishaFace detection in digital images
US6734845 *18 Sep 199711 May 2004Sun Microsystems, Inc.Eyetrack-driven illumination and information display
US6956564 *8 Oct 199818 Oct 2005British Telecommunications Public Limited CompanyPortable computers
US6970723 *23 Mar 200129 Nov 2005Canon Kabushiki KaishaMobile-type electronic apparatus and method for controlling the same
US7091471 *15 Mar 200415 Aug 2006Agilent Technologies, Inc.Using eye detection for providing control and power management of electronic devices
US7379560 *5 Mar 200327 May 2008Intel CorporationMethod and apparatus for monitoring human attention in dynamic power management
US20020180799 *29 May 20015 Dec 2002Peck Charles C.Eye gaze control of dynamic information presentation
US20040175020 *5 Mar 20039 Sep 2004Bradski Gary R.Method and apparatus for monitoring human attention in dynamic power management
US20070024579 *3 May 20061 Feb 2007Outland Research, LlcGaze discriminating electronic control apparatus, system, method and computer program product
US20070078552 *21 Nov 20065 Apr 2007Outland Research, LlcGaze-based power conservation for portable media players
US20070132734 *13 Sep 200614 Jun 2007Jong-Taek KwakOptical navigation device and method of operating the same
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US832600129 Jun 20104 Dec 2012Apple Inc.Low threshold face recognition
US834499820 Jan 20091 Jan 2013Wimm Labs, Inc.Gesture-based power management of a wearable portable electronic device with display
US8462949 *29 Nov 200811 Jun 2013Oculis Labs, Inc.Method and apparatus for secure display of visual content
US8508520 *9 Jul 200913 Aug 2013Nvidia CorporationLuminous power control of a light source of a multimedia processing system
US863929730 Nov 201228 Jan 2014Lg Electronics Inc.Mobile terminal and operation control method thereof
US8639957 *26 Nov 201028 Jan 2014Samsung Electronics Co., Ltd.Method and apparatus for reducing power consumption in digital living network alliance network
US8643771 *7 Dec 20114 Feb 2014Fu Tai Hua Industry (Shenzhen) Co., Ltd.Electronic device and control method for controlling powering-saving state of electronic device
US8659433 *21 Jun 201225 Feb 2014Google Inc.Locking mechanism based on unnatural movement of head-mounted display
US8749651 *7 Aug 201310 Jun 2014Blackberry LimitedApparatus, and associated method, for selecting information delivery manner using facial recognition
US878798630 Nov 201222 Jul 2014Lg Electronics Inc.Mobile terminal and operation control method thereof
US8806235 *14 Jun 201112 Aug 2014International Business Machines CorporationDisplay management for multi-screen computing environments
US8824747 *29 Jun 20102 Sep 2014Apple Inc.Skin-tone filtering
US883168829 Nov 20139 Sep 2014Lg Electronics Inc.Mobile terminal and operation control method thereof
US884334613 May 201123 Sep 2014Amazon Technologies, Inc.Using spatial information with device interaction
US8913004 *5 Mar 201016 Dec 2014Amazon Technologies, Inc.Action based device control
US8922480 *19 Apr 201030 Dec 2014Amazon Technologies, Inc.Viewer-based device control
US894732320 Mar 20123 Feb 2015Hayes Solos RaffleContent display methods
US8947382 *28 Feb 20123 Feb 2015Motorola Mobility LlcWearable display device, corresponding systems, and method for presenting output on the same
US8957847 *28 Dec 201017 Feb 2015Amazon Technologies, Inc.Low distraction interfaces
US897611027 Oct 201110 Mar 2015Tobii Technology AbPower management in an eye-tracking system
US898834928 Feb 201224 Mar 2015Google Technology Holdings LLCMethods and apparatuses for operating a display in an electronic device
US904960028 Jul 20142 Jun 2015Lg Electronics Inc.Mobile terminal and operation control method thereof
US9058168 *23 Jan 201216 Jun 2015Blackberry LimitedElectronic device and method of controlling a display
US9075435 *22 Apr 20137 Jul 2015Amazon Technologies, Inc.Context-aware notifications
US90760293 Dec 20127 Jul 2015Apple Inc.Low threshold face recognition
US9092051 *20 Nov 201228 Jul 2015Samsung Electronics Co., Ltd.Method for operating user functions based on eye tracking and mobile device adapted thereto
US909806916 Nov 20114 Aug 2015Google Technology Holdings LLCDisplay device, corresponding systems, and methods for orienting output on a display
US9110635 *3 Dec 201318 Aug 2015Lenova (Singapore) Pte. Ltd.Initiating personal assistant application based on eye tracking and gestures
US912224915 Aug 20121 Sep 2015Nokia Technologies OyMulti-segment wearable accessory
US915220922 Aug 20126 Oct 2015Samsung Electronics Co., Ltd.Method and apparatus for controlling an operation mode of a mobile terminal
US9179015 *3 Oct 20123 Nov 2015Konica Minolta Business Technologies, Inc.Image forming apparatus
US917952515 Apr 20133 Nov 2015Fujitsu LimitedTerminal apparatus, backlight control method, and backlight control program
US9182801 *9 Sep 201310 Nov 2015Lg Electronics Inc.Screen brightness control for mobile device
US92136593 Dec 201315 Dec 2015Lenovo (Singapore) Pte. Ltd.Devices and methods to receive input at a first device and present output in response on a second device different from the first device
US9218119 *25 Mar 201122 Dec 2015Blackberry LimitedSystem and method for gesture detection and feedback
US92560719 Jan 20129 Feb 2016Google Inc.User interface
US9264608 *7 Aug 201316 Feb 2016Samsung Electronics Co., Ltd.Power saving control method and electronic device supporting the same
US9277173 *28 Aug 20091 Mar 2016Kyocera CorporationCommunication device
US9277380 *2 May 20131 Mar 2016Hyundi Motor CompanyMethod for controlling call termination based on gaze, and mobile communication terminal therefor
US9285906 *28 May 201315 Mar 2016Ricoh Company, LimitedInformation processing apparatus, information display system and information display method
US9294720 *18 May 201222 Mar 2016Unify Gmbh & Co. KgMethod, device, and system for reducing bandwidth usage during a communication session
US930462125 May 20125 Apr 2016Amazon Technologies, Inc.Communication via pressure input
US930739621 Aug 20125 Apr 2016Firstface Co., Ltd.System, method and mobile communication terminal for displaying advertisement upon activation of mobile communication terminal
US931709924 Dec 201319 Apr 2016Samsung Electronics Co., Ltd.Method and apparatus for reducing power consumption in digital living network alliance network
US9323310 *11 Sep 201326 Apr 2016Sony CorporationMobile client device, operation method, and recording medium
US9324279 *11 Nov 201026 Apr 2016Sharp Kabushiki KaishaIllumination device, display device, data generation method, non-transitory computer readable recording medium including data generation program for generating light amount adjustment data based on temperature
US9367117 *29 Aug 201314 Jun 2016Sony Interactive Entertainment America LlcAttention-based rendering and fidelity
US9374872 *30 Aug 201321 Jun 2016Universal Display CorporationIntelligent dimming lighting
US939064911 Feb 201412 Jul 2016Universal Display CorporationRuggedized wearable display
US9395816 *12 Apr 201319 Jul 2016Lg Electronics Inc.Display device for selectively outputting tactile feedback and visual feedback and method for controlling the same
US9398144 *24 Oct 201319 Jul 2016Cellco PartnershipMobile device mode of operation for visually impaired users
US940591829 Dec 20142 Aug 2016Amazon Technologies, Inc.Viewer-based device control
US940610326 Sep 20122 Aug 2016Amazon Technologies, Inc.Inline message alert
US9406211 *29 Jun 20152 Aug 2016Medical Wearable Solutions Ltd.Wearable posture regulation system and method to regulate posture
US94360065 Dec 20146 Sep 2016Osterhout Group, Inc.See-through computer display systems
US943630610 Sep 20126 Sep 2016Nec CorporationPortable terminal device and program
US944256628 Jan 201513 Sep 2016Tobii AbPower management in an eye-tracking system
US94711416 Jul 201518 Oct 2016Amazon Technologies, Inc.Context-aware notifications
US947127516 Dec 201518 Oct 2016International Business Machines CorporationReading device usability
US94740222 Dec 201318 Oct 2016Nvidia CorporationSaving power in a mobile terminal
US949480030 Jul 201515 Nov 2016Osterhout Group, Inc.See-through computer display systems
US9509910 *10 Apr 201429 Nov 2016Tobii AbPower efficient image sensing apparatus, method of operating the same and eye/gaze tracking system
US952385617 Jun 201520 Dec 2016Osterhout Group, Inc.See-through computer display systems
US952919227 Oct 201427 Dec 2016Osterhout Group, Inc.Eye imaging in head worn computing
US95291955 Jan 201527 Dec 2016Osterhout Group, Inc.See-through computer display systems
US952919917 Jun 201527 Dec 2016Osterhout Group, Inc.See-through computer display systems
US953549720 Nov 20143 Jan 2017Lenovo (Singapore) Pte. Ltd.Presentation of data on an at least partially transparent display based on user focus
US954284411 Feb 201410 Jan 2017Google Inc.Providing navigation directions in view of device orientation relative to user
US954746519 Feb 201617 Jan 2017Osterhout Group, Inc.Object shadowing in head worn computing
US9572232 *18 Dec 201414 Feb 2017Universal Display CorporationBiosensing electronic devices
US957532110 Jun 201421 Feb 2017Osterhout Group, Inc.Content presentation in head worn computing
US957822410 Sep 201221 Feb 2017Nvidia CorporationSystem and method for enhanced monoimaging
US95895123 Nov 20157 Mar 2017Lg Electronics Inc.Screen brightness control for mobile device
US95942464 Dec 201414 Mar 2017Osterhout Group, Inc.See-through computer display systems
US960005624 Mar 201621 Mar 2017Sony CorporationMobile client device, operation method, and recording medium
US961265625 Nov 20134 Apr 2017Facebook, Inc.Systems and methods of eye tracking control on mobile device
US96157425 Nov 201411 Apr 2017Osterhout Group, Inc.Eye imaging in head worn computing
US96190203 Mar 201411 Apr 2017Tobii AbDelay warp gaze interaction
US963325220 Dec 201325 Apr 2017Lenovo (Singapore) Pte. Ltd.Real-time detection of user intention based on kinematics analysis of movement-oriented biometric data
US96333738 Sep 201525 Apr 2017Firstface Co., Ltd.Activating display and performing additional function in mobile terminal with one-time user input
US96398593 Mar 20162 May 2017Firstface Co., Ltd.System, method and mobile communication terminal for displaying advertisement upon activation of mobile communication terminal
US964564216 Feb 20159 May 2017Amazon Technologies, Inc.Low distraction interfaces
US965178325 Aug 201516 May 2017Osterhout Group, Inc.See-through computer display systems
US965178411 Sep 201516 May 2017Osterhout Group, Inc.See-through computer display systems
US965178717 Jun 201416 May 2017Osterhout Group, Inc.Speaker assembly for headworn computer
US965178817 Jun 201516 May 2017Osterhout Group, Inc.See-through computer display systems
US965178921 Oct 201516 May 2017Osterhout Group, Inc.See-Through computer display systems
US9652024 *22 Aug 201416 May 2017Samsung Electronics Co., Ltd.Mode switching method and apparatus of terminal
US9654768 *23 Dec 201116 May 2017Thomson LicensingComputer device with power-consumption management and method for managing power consumption of computer device
US965845717 Sep 201523 May 2017Osterhout Group, Inc.See-through computer display systems
US965845817 Sep 201523 May 2017Osterhout Group, Inc.See-through computer display systems
US96716132 Oct 20146 Jun 2017Osterhout Group, Inc.See-through computer display systems
US9671852 *28 Aug 20156 Jun 2017At&T Intellectual Property I, L.P.Managing power consumption state of electronic devices responsive to predicting future demand
US967221017 Mar 20156 Jun 2017Osterhout Group, Inc.Language translation with head-worn computing
US968416527 Oct 201420 Jun 2017Osterhout Group, Inc.Eye imaging in head worn computing
US968417125 Aug 201520 Jun 2017Osterhout Group, Inc.See-through computer display systems
US968417211 Dec 201520 Jun 2017Osterhout Group, Inc.Head worn computer display systems
US969669020 Aug 20124 Jul 2017Nokia Technologies OyMulti-segment wearable accessory
US9703355 *24 Sep 201311 Jul 2017Qualcomm IncorporatedMethod, devices and systems for dynamic multimedia data flow control for thermal power budgeting
US97097089 Dec 201318 Jul 2017Lenovo (Singapore) Pte. Ltd.Adjustable display optics
US971278210 Feb 201618 Jul 2017Unify Gmbh & Co. KgMethod, device, and system for reducing bandwidth usage during a communication session
US971511214 Feb 201425 Jul 2017Osterhout Group, Inc.Suppression of stray light in head worn computing
US9715266 *13 Jun 201625 Jul 2017Sony Interactive Entertainment America LlcAttention-based rendering and fidelity
US97202275 Dec 20141 Aug 2017Osterhout Group, Inc.See-through computer display systems
US972023425 Mar 20151 Aug 2017Osterhout Group, Inc.See-through computer display systems
US972023525 Aug 20151 Aug 2017Osterhout Group, Inc.See-through computer display systems
US972024119 Jun 20141 Aug 2017Osterhout Group, Inc.Content presentation in head worn computing
US974001225 Aug 201522 Aug 2017Osterhout Group, Inc.See-through computer display systems
US974026815 Jan 201522 Aug 2017Apple Inc.Intelligent management for an electronic device
US974028028 Oct 201422 Aug 2017Osterhout Group, Inc.Eye imaging in head worn computing
US974667617 Jun 201529 Aug 2017Osterhout Group, Inc.See-through computer display systems
US974668619 May 201429 Aug 2017Osterhout Group, Inc.Content position calibration in head worn computing
US974707217 Oct 201629 Aug 2017Amazon Technologies, Inc.Context-aware notifications
US975328822 Sep 20155 Sep 2017Osterhout Group, Inc.See-through computer display systems
US976015027 Nov 201212 Sep 2017Nvidia CorporationLow-power states for a computer system with integrated baseband
US976646315 Oct 201519 Sep 2017Osterhout Group, Inc.See-through computer display systems
US9766699 *8 Aug 201319 Sep 2017Tobii AbFast wake-up in a gaze tracking system
US977249227 Oct 201426 Sep 2017Osterhout Group, Inc.Eye imaging in head worn computing
US977882918 Nov 20143 Oct 2017Lenovo (Singapore) Pte. Ltd.Magnification based on eye input
US97794198 Sep 20153 Oct 2017Firstface Co., Ltd.Activating display and performing user authentication in mobile terminal with one-time user input
US97849734 Nov 201510 Oct 2017Osterhout Group, Inc.Micro doppler presentations in head worn computing
US979191226 Oct 201217 Oct 2017Tobii AbIntelligent user mode selection in an eye-tracking system
US981090617 Jun 20147 Nov 2017Osterhout Group, Inc.External user interface for head worn computing
US98110956 Aug 20147 Nov 2017Lenovo (Singapore) Pte. Ltd.Glasses with fluid-fillable membrane for adjusting focal length of one or more lenses of the glasses
US981115228 Oct 20147 Nov 2017Osterhout Group, Inc.Eye imaging in head worn computing
US981115928 Oct 20147 Nov 2017Osterhout Group, Inc.Eye imaging in head worn computing
US20090141895 *29 Nov 20084 Jun 2009Oculis Labs, IncMethod and apparatus for secure display of visual content
US20090195497 *20 Jan 20096 Aug 2009Pillar Ventures, LlcGesture-based power management of a wearable portable electronic device with display
US20090218957 *29 Feb 20083 Sep 2009Nokia CorporationMethods, apparatuses, and computer program products for conserving power in mobile devices
US20100134434 *27 Nov 20093 Jun 2010Inventec CorporationCommunication device and electricity saving method thereof
US20100271384 *16 Jun 200928 Oct 2010Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd.Intelligent digital photo frame
US20100295839 *18 May 201025 Nov 2010Hitachi Consumer Electronics Co., Ltd.Image Display Device
US20110006997 *9 Jul 200913 Jan 2011Gunjan PorwalLuminous power control of a light source of a multimedia processing system
US20110138208 *26 Nov 20109 Jun 2011Samsung Electronics Co. Ltd.Method and apparatus for reducing power consumption in digital living network alliance network
US20110141220 *28 Aug 200916 Jun 2011Kyocera CorporationCommunication device
US20110234543 *25 Mar 201129 Sep 2011User Interfaces In Sweden AbSystem and method for gesture detection and feedback
US20110234617 *24 Mar 201129 Sep 2011Kyocera CorporationMobile electronic device
US20110304541 *13 Jun 201115 Dec 2011Navneet DalalMethod and system for detecting gestures
US20110317917 *29 Jun 201029 Dec 2011Apple Inc.Skin-tone Filtering
US20120019447 *2 Oct 200926 Jan 2012Hanes David HDigital display device
US20120032894 *6 Aug 20109 Feb 2012Nima ParivarIntelligent management for an electronic device
US20120038541 *1 Jun 201116 Feb 2012Lg Electronics Inc.Mobile terminal, display device and controlling method thereof
US20120274839 *7 Dec 20111 Nov 2012Hon Hai Precision Industry Co., Ltd.Electronic device and control method thereof
US20120306942 *11 Nov 20106 Dec 2012Sharp Kabushiki KaishaIllumination device, display device, data generation method, data generation program and recording medium
US20120324256 *14 Jun 201120 Dec 2012International Business Machines CorporationDisplay management for multi-screen computing environments
US20130021308 *18 Sep 201124 Jan 2013Hon Hai Precision Industry Co., Ltd.Electronic device and method for adjusting backlight brightness
US20130083344 *3 Oct 20124 Apr 2013Konica Minolta Business Technologies, Inc. ,Image forming apparatus
US20130120535 *9 Nov 201216 May 2013Hongrae ChaThree-dimensional image processing apparatus and electric power control method of the same
US20130135196 *20 Nov 201230 May 2013Samsung Electronics Co., Ltd.Method for operating user functions based on eye tracking and mobile device adapted thereto
US20130176208 *3 Jan 201311 Jul 2013Kyocera CorporationElectronic equipment
US20130176250 *26 Dec 201211 Jul 2013Lg Electronics Inc.Mobile terminal and control method thereof
US20130187863 *23 Jan 201225 Jul 2013Research In Motion LimitedElectronic device and method of controlling a display
US20130215250 *16 Feb 201222 Aug 2013Research In Motion LimitedPortable electronic device and method
US20130222270 *28 Feb 201229 Aug 2013Motorola Mobility, Inc.Wearable display device, corresponding systems, and method for presenting output on the same
US20130229337 *13 Feb 20135 Sep 2013Kabushiki Kaisha ToshibaElectronic device, electronic device controlling method, computer program product
US20130229442 *29 Aug 20125 Sep 2013Huawei Device Co., Ltd.Method for controlling screen state of mobile device and related mobile device
US20130268316 *4 Apr 201310 Oct 2013Invue Security Products Inc.Merchandise user tracking system and method
US20130321312 *28 May 20135 Dec 2013Haruomi HIGASHIInformation processing apparatus, information display system and information display method
US20130342672 *25 Jun 201226 Dec 2013Amazon Technologies, Inc.Using gaze determination with device input
US20140002352 *9 May 20122 Jan 2014Michal JacobEye tracking based selective accentuation of portions of a display
US20140043227 *8 Aug 201313 Feb 2014Tobii Technology AbFast wake-up in a gaze tracking system
US20140043498 *7 Aug 201313 Feb 2014Samsung Electronics Co., Ltd.Power saving control method and electronic device supporting the same
US20140055387 *16 Mar 201327 Feb 2014Wistron Corp.Portable electronic device and automatic unlocking method thereof
US20140080550 *11 Sep 201320 Mar 2014Sony Mobile Communications, Inc.Mobile client device, operation method, and recording medium
US20140085221 *30 Nov 201227 Mar 2014Lg Electronics Inc.Portable device and control method thereof
US20140094224 *9 Sep 20133 Apr 2014Yury LOZOVOYScreen brightness control for mobile device
US20140095994 *20 Nov 20123 Apr 2014Lg Electronics Inc.Portable device and control method thereof
US20140160019 *7 Dec 201212 Jun 2014Nvidia CorporationMethods for enhancing user interaction with mobile devices
US20140171037 *2 May 201319 Jun 2014Hyundai Motor CompanyMethod for controlling call termination based on gaze, and mobile communication terminal therefor
US20140191939 *9 Jan 201310 Jul 2014Microsoft CorporationUsing nonverbal communication in determining actions
US20140204014 *30 Mar 201224 Jul 2014Sony Mobile Communications AbOptimizing selection of a media object type in which to present content to a user of a device
US20140232638 *27 Jan 201421 Aug 2014Samsung Electronics Co., Ltd.Method and apparatus for user interface using gaze interaction
US20140240245 *12 Apr 201328 Aug 2014Lg Electronics Inc.Display device for selectively outputting tactile feedback and visual feedback and method for controlling the same
US20140244190 *28 Feb 201328 Aug 2014Cellco Partnership D/B/A Verizon WirelessPower usage analysis
US20140247208 *14 May 20134 Sep 2014Tobii Technology AbInvoking and waking a computing device from stand-by mode based on gaze detection
US20140313127 *3 Jul 201423 Oct 2014Huawei Device Co., Ltd.Method for Calling Application Object and Mobile Terminal
US20140320688 *10 Apr 201430 Oct 2014Tobii Technology AbPower Efficient Image Sensing Apparatus, Method of Operating the Same and Eye/Gaze Tracking System
US20140329214 *17 Mar 20146 Nov 2014Marc Jim BitounPhysiological Indicator Monitoring For Identifying Stress Triggers and Certain Health Problems
US20140340317 *14 May 201320 Nov 2014Sony CorporationButton with capacitive touch in a metal body of a user device and power-saving touch key control of information to display
US20140347454 *23 Dec 201127 Nov 2014Thomson LicensingComputer device with power-consumption management and method for managing power-consumption of computer device
US20140368423 *17 Jun 201318 Dec 2014Nvidia CorporationMethod and system for low power gesture recognition for waking up mobile devices
US20140379341 *20 Jun 201425 Dec 2014Samsung Electronics Co., Ltd.Mobile terminal and method for detecting a gesture to control functions
US20140380230 *25 Jun 201325 Dec 2014Morgan Kolya VenableSelecting user interface elements via position signal
US20150015688 *9 Jul 201315 Jan 2015HTC CorportionFacial unlock mechanism using light level determining module
US20150035776 *15 Mar 20135 Feb 2015Ntt Docomo, Inc.Information terminal, method for controlling input acceptance, and program for controlling input acceptance
US20150058649 *22 Aug 201426 Feb 2015Samsung Electronics Co., Ltd.Mode switching method and apparatus of terminal
US20150061504 *30 Aug 20135 Mar 2015Universal Display CorporationIntelligent dimming lighting
US20150061989 *29 Aug 20135 Mar 2015Sony Computer Entertainment America LlcAttention-based rendering and fidelity
US20150067377 *24 Sep 20135 Mar 2015Qualcomm IncorporatedMethod, Devices and Systems for Dynamic Multimedia Data Flow Control for Thermal Power Budgeting
US20150097919 *18 May 20129 Apr 2015Unify Gmbh & Co. KgMethod, Device, and System for Reducing Bandwidth Usage During a Communication Session
US20150119108 *24 Oct 201330 Apr 2015Cellco Partnership D/B/A Verizon WirelessMobile device mode of operation for visually impaired users
US20150154001 *3 Dec 20134 Jun 2015Lenovo (Singapore) Pte. Ltd.Initiating personal assistant application based on eye tracking and gestures
US20150169047 *16 Dec 201318 Jun 2015Nokia CorporationMethod and apparatus for causation of capture of visual information indicative of a part of an environment
US20150169048 *18 Dec 201318 Jun 2015Lenovo (Singapore) Pte. Ltd.Systems and methods to present information on device based on eye tracking
US20150169053 *15 Dec 201418 Jun 2015Amazon Technologies, Inc.Controlling Power Consumption Based on User Gaze
US20150213725 *28 Aug 201330 Jul 2015Tractus CorporationMethod, apparatus, and system for viewing multiple-slice medical images
US20150334808 *18 Dec 201419 Nov 2015Universal Display CorporationBiosensing Electronic Devices
US20150370307 *28 Aug 201524 Dec 2015At&T Intellectual Property I, LpManaging power consumption state of electronic devices responsive to predicting future demand
US20160105638 *16 Dec 201514 Apr 2016Avaya Inc.Protecting privacy of a customer and an agent using face recognition in a video contact center environment
US20160109943 *21 Oct 201421 Apr 2016Honeywell International Inc.System and method for controlling visibility of a proximity display
US20160131911 *16 Jun 201512 May 2016Osterhout Group, Inc.Power management for head worn computing
US20160133201 *16 Jun 201512 May 2016Osterhout Group, Inc.Power management for head worn computing
US20160292525 *26 Feb 20166 Oct 2016Fujitsu LimitedImage analyzing apparatus and image analyzing method
US20160373645 *31 Aug 201622 Dec 2016Pixart Imaging Inc.Image system with eye protection
US20170045940 *27 Oct 201616 Feb 2017Tobii AbPower efficient image sensing apparatus, method of operating the same and eye/gaze tracking system
USD79240028 Jan 201618 Jul 2017Osterhout Group, Inc.Computer glasses
USD79463718 Feb 201615 Aug 2017Osterhout Group, Inc.Air mouse
CN103135762A *21 Nov 20125 Jun 2013三星电子株式会社Method for operating user functions based on eye tracking and mobile device adapted thereto
CN103379222A *25 Apr 201330 Oct 2013富士通株式会社Terminal apparatus and backlight control method
CN103576834A *7 Aug 201312 Feb 2014三星电子株式会社Power saving control method and electronic device supporting the same
CN103576857A *5 Aug 201312 Feb 2014托比技术股份公司Fast wake-up in gaze tracking system
CN104115485A *13 Feb 201322 Oct 2014华为技术有限公司Mobile electronic device with display state control
CN104145230A *23 Dec 201112 Nov 2014汤姆逊许可公司Computer device with power-consumption management and method for managing power-consumption of computer device
CN104349009A *5 Aug 201411 Feb 2015柯尼卡美能达株式会社Display device, non-transitory computer-readable recording medium and image processing apparatus
CN104662600A *25 Jun 201327 May 2015亚马逊技术公司Using gaze determination with device input
CN105144027A *8 Jan 20149 Dec 2015微软技术许可有限责任公司Using nonverbal communication in determining actions
DE102011084186A1 *9 Oct 201111 Apr 2013XS Embedded GmbHDisplay device for visual representation of information using power-saving mode, has display and intensity control circuit for controlling brightness of display
EP2587341A1 *27 Oct 20111 May 2013Tobii Technology ABPower management in an eye-tracking system
EP2600220A3 *27 Nov 201227 May 2015Samsung Electronics Co., LtdMethod for operating user functions based on eye tracking and mobile device adapted thereto
EP2629177A1 *16 Feb 201221 Aug 2013Research In Motion LimitedPortable electronic device and method
EP2658224A3 *15 Apr 201319 Mar 2014Fujitsu LimitedTerminal apparatus, backlight control method, and backlight control program
EP2696259A1 *9 Aug 201212 Feb 2014Tobii Technology ABFast wake-up in a gaze tracking system
EP2696572A3 *7 Aug 201316 Nov 2016Samsung Electronics Co., Ltd.Power saving control method and electronic device supporting the same
EP2717551A3 *30 Aug 201314 Dec 2016LG Electronics, Inc.Screen brightness control for mobile device
EP2737467B11 Jun 20121 Apr 2015Robert Bosch GmbHProcedure to assist the driver of a vehicle
EP2759906A4 *10 Sep 20129 Sep 2015Nec CorpPortable terminal device and program
EP2787423A1 *13 Mar 20138 Oct 2014Huawei Device Co., Ltd.Standby operation control method and device
EP2787423A4 *13 Mar 201311 Feb 2015Huawei Device Co LtdStandby operation control method and device
EP2795425A4 *23 Dec 201126 Aug 2015Thomson LicensingComputer device with power-consumption management and method for managing power-consumption of computer device
EP2804074A217 Apr 201419 Nov 2014Tobii Technology ABPower Efficient Image Sensing Apparatus, Method of Operating the Same and Eye/Gaze Tracking System
EP2827226A3 *29 Oct 20138 Apr 2015LG Electronics, Inc.Watch type mobile terminal
EP2864978A4 *25 Jun 201324 Feb 2016Amazon Tech IncUsing gaze determination with device input
EP2889718A1 *2 Jan 20151 Jul 2015Samsung Electronics Co., LtdA natural input based virtual ui system for electronic devices
EP2898394A4 *26 Aug 201320 Apr 2016Lg Electronics IncPortable device and control method thereof
EP3012828A4 *19 Jun 20134 Jan 2017Yulong Computer Telecommunication Scient (Shenzhen) Co LtdSmart watch and display method for smart watch
EP3014604A4 *28 Jun 20131 Mar 2017Nokia Technologies OySupporting activation of function of device
EP3037915A1 *23 Dec 201429 Jun 2016Nokia Technologies OYVirtual reality content control
EP3065623A4 *10 Nov 20149 Aug 2017Shenzhen Huiding Technology CoOptical eye tracking
EP3087533A4 *23 Dec 201420 Sep 2017Eyelock LlcMethods and apparatus for power-efficient iris recognition
EP3200046A1 *27 Oct 20112 Aug 2017Tobii Technology ABPower management in an eye-tracking system
WO2012008827A110 Jun 201119 Jan 2012Universiteit Van AmsterdamSystem and method for detecting a person's direction of interest, such as a person's gaze direction
WO2013060826A126 Oct 20122 May 2013Tobii Technology AbIntelligent user mode selection in an eye-tracking system
WO2013130202A228 Jan 20136 Sep 2013Motorola Mobility LlcMethods and apparatuses for operating a display in an electronic device
WO2013130203A229 Jan 20136 Sep 2013Motorola Mobility LlcMethods and apparatuses for operating a display in an electronic device
WO2013172848A1 *18 May 201221 Nov 2013Siemens Enterprise Communications Gmbh & Co. KgMethod, device, and system for reducing bandwidth usage during a communication session
WO2014004584A225 Jun 20133 Jan 2014Amazon Technologies, Inc.Using gaze determination with device input
WO2014004584A3 *25 Jun 20133 Apr 2014Amazon Technologies, Inc.Using gaze determination with device input
WO2014046390A126 Aug 201327 Mar 2014Lg Electronics Inc.Portable device and control method thereof
WO2014116167A1 *22 Jan 201431 Jul 2014Crunchfish AbIimproved tracking of an object for controlling a touchless user interface
WO2014124663A1 *13 Feb 201321 Aug 2014Huawei Technologies Co., Ltd.Mobile electronic device with display state control
WO2014130238A3 *5 Feb 20148 Jan 2015Intel CorporationCall routing among personal devices based on visual clues
WO2014146168A1 *19 Mar 201425 Sep 2014National Ict Australia LimitedAutomatic detection of task transition
WO2014183529A1 *17 Apr 201420 Nov 2014Zte CorporationMobile terminal talk mode switching method, device and storage medium
WO2015026203A1 *22 Aug 201426 Feb 2015Samsung Electronics Co., Ltd.Mode switching method and apparatus of terminal
WO2015042034A1 *16 Sep 201426 Mar 2015Nokia CorporationDisplay of a visual event notification
WO2015089011A1 *9 Dec 201418 Jun 2015Agco CorporationMethod and apparatus for improving user interface visibility in agricultural machines
WO2015123062A1 *4 Feb 201520 Aug 2015Google Inc.Navigation directions specific to device state
WO2015138203A1 *4 Mar 201517 Sep 2015Google Technology Holdings LLCDisplay viewing detection
WO2016102763A1 *18 Dec 201530 Jun 2016Nokia Technologies OyVirtual reality content control
WO2017018732A1 *22 Jul 20162 Feb 2017Samsung Electronics Co., Ltd.Electronic device and method for providing content
Classifications
U.S. Classification345/697, 340/669, 345/212
International ClassificationG09G5/00, G08B21/00, G09G5/02
Cooperative ClassificationY02B60/50, H04N21/4436, Y02B60/1242, G06F1/3265, G06F1/3206, G06F3/013, G09G2330/021, H04W52/027
European ClassificationG06F3/01B4
Legal Events
DateCodeEventDescription
30 Sep 2008ASAssignment
Owner name: APPLE INC.,CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HODGE, ANDREW;ROSENBLATT, MICHAEL;SIGNING DATES FROM 20080928 TO 20080930;REEL/FRAME:021611/0099