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 numberUSRE36801 E
Publication typeGrant
Application numberUS 08/634,618
Publication date1 Aug 2000
Filing date18 Apr 1996
Priority date29 Oct 1992
Fee statusPaid
Also published asUS5371551
Publication number08634618, 634618, US RE36801 E, US RE36801E, US-E-RE36801, USRE36801 E, USRE36801E
InventorsJames Logan, Daniel Goessling
Original AssigneeJames Logan
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Time delayed digital video system using concurrent recording and playback
US RE36801 E
Abstract
A broadcast recording and playback device employing a "circular buffer" which constantly records one or more incoming audio or video program signals and a microprocessor for accessing the memory to read a playback signal from the circular buffer to display programming material delayed from its receipt by a selectable delay interval. The circular buffer is implemented by a digital memory. Subsystem comprising the combination of a semiconductor RAM memory and a disk memory operated under the control of a microprocessor such that incoming signals are constantly recorded as received while, at the same time, delayed signals are being read from the memory subsystem at a different memory location selected by a microprocessor to provide a user-selected time delay. A plurality of input signal processors provides one or more programming signals to the memory subsystem in compressed digital form and a separate output signal processor converts the compressed digital information read from the memory into a form suitable for display. The audio/video buffer system operates under the control of a microprocessor which accepts commands from a remote command device or a connected host computer.
Images(2)
Previous page
Next page
Claims(10)
What is claimed is:
1. In combination,
means for generating a substantially continuous sequence of .[.a.]. digital .[.television.]. input signal values .Iadd.representing an incoming audio or video program signal.Iaddend.,
a source of control commands,
a .[.television.]. .Iadd.program .Iaddend.signal utilization device, and
a variable delay circular storage buffer .Iadd.for storing those of said digital input signal values which were received during the immediately preceding time intervals of predetermined duration, said circular storage buffer .Iaddend.having an input port connected to receive said digital .[.television.]. input signal values and an output port connected to supply a delayed replica of said input signal values to said utilization device following a variable delay interval, the duration of said interval being selectable in response to said control commands, said circular storage buffer comprising, in combination:
an addressable digital memory,
a programmed processor,
memory access means for continuously writing said sequence of digital .[.television.]. input signal values into said addressable digital memory.[.,.]. at a sequence of .Iadd.continually advancing .Iaddend.writing addresses established by said processor .Iadd.to write over the oldest of said input signal values recorded in said digital memory as said sequence of writing addresses are advanced so that said digital input signal values received during said immediately preceding time interval of predetermined duration are stored in said addressable digital memory, .Iaddend.and for concurrently reproducing and supplying to said output port an output sequence of previously written ones of signal values read from said addressable digital memory at a sequence of different reading addresses established by said processor, and
means for supplying said output sequence to said output port,
wherein said programmed processor includes means responsive to said control commands for varying the relative locations of said reading and writing addresses to selectively alter said variable delay interval.
2. The combination set forth in claim 1 wherein said means for generating said input signal values comprises, in combination,
means for receiving an analog .[.television.]. program signal,
an analog-to-digital converter for translating said program signal into
a first sequence of digital values, and
data compression means for translating said first sequence of digital
values into more compact form for storage in said addressable memory,
wherein said combination further comprises data decompression means connected between said output port and said utilization device.
3. The combination as set forth in claim 2 wherein said compression means is responsive to said processor means for varying the compression ratio at which said first sequence of digital values is translated into more compact form.
4. The combination as defined in claim 1 .Iadd.wherein said program signal is a television signal and .Iaddend.wherein one of said control commands is a pause command and wherein said programmed processor further includes means responsive to said pause command for maintaining said reading addresses to repeatedly send a portion of the television signal stored in said memory to said output port.
5. The combination as defined in claim 4 wherein one of said control commands is a playback speed command and wherein said programmed processor further includes means responsive to said playback speed command for altering the rate at which said reading addresses are changed.
6. The combination as defined in claim 4 wherein one of said control commands is a reverse command and wherein said programmed processor further includes means responsive to said playback speed command for altering said reading addresses in a reverse order from the sequence of writing addresses used to store said television input signal to thereby provide a reverse motion television signal to said output port.
7. The combination as defined in claim 1 .Iadd.wherein said program signal is a television signal and .Iaddend.wherein one of said control commands include a replay selection command and wherein said programmed processor further includes means for selectively accessing data at a plurality of different frame addresses stored in said digital memory to form data representing a mosaic of reduced size images, each of said images representing data at a corresponding one of said frame addresses, and wherein said programmed processor further includes means responsive to said replay selection command for setting said reading address to a selected one of said frame addresses identified by said replay selection command.
8. The combination as set forth in claim 7 wherein said compression means includes means responsive to said processor means for varying the compression ratio at which said first sequence of digital values is translated into more compact form. .Iadd.
9. The combination set forth in claim 1 wherein said variable delay circular storage buffer stores one or more incoming signals and wherein said means for concurrently reproducing and supplying to said output port an output sequence of previously written ones of signal values includes means responsive to a user command for selecting a particular one of said one or more incoming signals for reproduction. .Iaddend..Iadd.
10. The combination as set forth in claim 9 further comprising an input unit composed of one or more simultaneously operating signal processors each connected to a source of programming signals for supplying said one or more incoming signals to said storage buffer. .Iaddend.
Description
FIELD OF THE INVENTION

This invention relates generally to video and audio broadcast recording and playback systems and more particularly, although in its broader aspects not exclusively, to an arrangement for monitoring programming as it is broadcast and for enabling the listener or viewer to pause, replay and fast-forward the broadcast programming.

BACKGROUND OF THE INVENTION

The video cassette recorder (VCR) has created desirable viewing options which are not available to the viewer of live television. When viewing pre-recorded programs, the viewer may pause the playback to answer the phone or to view a scene in "stop-action" mode, advance or rewind the recorded material to start the viewing to replay a scene or skip over annoying advertising. Digital recording techniques, such as those described in U.S. Pat. No. 4,963,995, may be used to store the recorded programming in a random access memory comprising the combination of a semiconductor RAM buffer and a disk memory, permitting a desired programming segment to be immediately accessed and viewed without the time consuming fast-forward and fast-reverse tape motion required in conventional video cassette recorders.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide these and other options and capabilities when the user of the broadcast receiver is monitoring the programming concurrently with its reception. For instance, portions of a broadcast program can be reviewed for an "instant replay" (a benefit of the video cassette player's rewind feature ), commercials can be "zapped" (a benefit of the video cassette player's fast forward feature), and the program can be "paused" temporarily (a benefit of the video cassettes' pause or stop features).

In accordance with a principle feature of the invention, one or more incoming audio or video signals are continuously digitized, compressed and stored in a buffer memory whenever the invention is in operation whereby, without attention from the user, the invention maintains a "circular buffer" which stores programming received during a preceding time interval of predetermined duration. To implement the continuously operating circular buffer, the invention preferably employs a dual-ported memory system operating under microprocessor control. A data compression unit is connected to supply compressed digital signals to the writing port of the memory system, and a separate data decompression unit is connected to receive data from the reading port of the memory system.

The invention advantageously comprises a microcontroller for selecting the buffer memory location from which the recorded programming is read for playback, the microcontroller being in turn controlled. By a viewer manipulated remote control unit which permits the user to select the portion of the buffered program to be viewed, or alternatively controlled by commands received from a connected computer with the microcontroller and buffer memory acting as a peripheral device.

The invention advantageously includes means for displaying, at the viewer's request, a mosaic of reduced-size images representing images stored in the buffer at spaced time intervals, thereby allowing the viewer to readily locate and select a scene of interest to be replayed. In response to the viewers selection, the memory location from which the images are read is altered to display the selected scene.

In a preferred arrangement contemplated by the invention, programming being received from one or more sources is simultaneously processed by a group of input signal processors, each of which delivers a compressed digital signal to the writing port of the memory system under microprocessor control.

According to a further feature of the invention, the rate of transmission of frames of a video broadcast from the buffer to the video display can be increased or decreased by the user to provide stop action or slow-motion effects.

According to still another feature of the invention, the amount of compression applied to the signal being stored can be varied by the user to allow longer programs to be recorded (with reduced quality) within the available memory space.

According to a further feature of the invention, the sequence of the frames transmitted from the buffer to the video display can be transmitted in reverse order.

According to a further feature of the invention, the viewer may skip unwanted segments of the viewed broadcast by altering the location from which the displayed images are read in order to bypass the display of unwanted material.

As contemplated by the invention, the broadcast buffer memory advantageously takes the form of the combination of a random access memory and a magnetic disk memory, the random access memory providing temporary storage of programming which is in the process of being written to and read from the larger capacity disk memory. To minimize memory space requirements, incoming analog broadcast signals are advantageously digitized and compressed prior to storage in the buffer, then decompressed and converted back into analog form for playback.

In addition, the buffer memory system contemplated by the invention preferably incorporates a programmable clock/calendar device which provides control signals for automatically activating the buffer memory to begin recording at a predetermined time in anticipation of scheduled use.

The invention is equally useful, and indeed simplified when used with high definition television signals which are already digitized and compressed, since those signals may be recorded and played back from the digital video buffer memory without additional processing.

These and other objects, features and advantages of the invention may be more clearly understood by considering the following detailed description. In the course of this description, reference will frequently be made to the attached drawings, in which:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a signal flow diagram of a video buffer system which embodies the invention; and

FIG. 2 is a more detailed hardware block diagram of the video buffer system embodying the invention.

DETAILED DESCRIPTION

FIG. 1 of the drawings shows the principal signal flow paths of a preferred embodiment of the invention. In FIG. 1, video signals are transmitted along the pathways indicated by the solid arrows and control signals are sent over paths indicated by the dotted line arrows.

As seen in FIG. 1, one or more incoming video signals are combined at a switching node 3 after being processed by one or more input signal processing units shown generally within the dotted rectangle 12. The node 3 applies selected ones of the compressed digital signals from the input unit 5 to the input (writing) port of a dual-port memory subsystem 5 comprising a RAM buffer memory 6 and a hard disk magnetic memory 7. The memory subsystem 5 continually stores the incoming data, writing over the oldest data stored on the hard disk 7, so that a fixed duration or "time window" of prior recorded signals are recorded in the memory subsystem 5 at all times. The recorded information is also continuously read from the memory subsystem 5 and supplied to via a decompressor 8 to a video display unit 10.

The memory system 5 operates under the control of a microprocessor controller 11 which also controls the operation of the switching node 3, the input unit 4, and the decompressor 8. The microprocessor 11 is programmed to respond to commands received from an infrared remote control unit 13 manipulated by the user, or alternatively from a computer control connection 14 which provides direct link to the serial or parallel port of a connected computer (not shown).

The invention may be operated under direct control of a host computer. The control connection 14 may take the form of a direct connection to the internal bus of connected host, with the microprocessor 11, the input unit 4, the switching node 3, the dual-ported RAM 6, and the decompressor 8 being mounted on an expansion circuit card which plugs directly into and is powered by the internal bus of the computer. In this arrangement, the hard disk memory 7 may be mounted in one or more of the available expansion bays and connected by disk controller circuitry also mounted on the expansion card.

As seen in FIG. 2, the invention also advantageously includes a clock/calendar unit 15 which is connected to the microprocessor 11 to automatically activate the system at scheduled times. In this way, the system need not be in continuous operation but may instead be activated in advance of scheduled use so that the memory subsystem 5 is fully loaded with prior programming at the time viewing begins.

In operation, the memory subsystem 5 stores one or more previously received signals which are supplied by the input unit 4 and selected at the switching node 3 under the control of microprocessor 11. The input unit 4 is composed of a one or more of simultaneously operating input signal processors each of which is connected to a source of programming signals. As seen in FIG. 1, one of more of these pathways may be connected to a source of compressed digital HDTV signals selected by an RF tuner as indicated at 4A. The input signal processors seen at 4B and 4C each comprise the cascaded combination of an RF tuner for selecting a desired frequency channel and a compressor for converting the selected signal into compressed digital format. Finally, the input signal processor seen at 4D receives a video baseband signal which is simply compressed and supplied to the switching node 3.

Using the remote control 13, or the connected computer 14, the user may select for viewing on the monitor 10 not only a particular incoming program but may select any point in time within the stored time window. Accordingly, in response to user commands, the display unit can provide an instant replay of selected programming, fast forward over undesired segments, pause and restart the programming, or provide fast, slow, or reverse motion displays, all of these functions being provided by altering the memory system address at which the programming to be displayed is read.

The hardware components of the system embodying the principles of the invention is further illustrated in FIG. 2 of the drawings. A single input signal processor shown consists of an RF tuner 17 connected to receive broadcast signals from an antenna 18 or a cable TV source 19. The RF tuner 17, under the control of a microcontroller 13, selects one or more available incoming video signals and transmits the selected analog video signals to an analog-to-digital converter 20. The analog-to-digital converter 20 converts the signal from analog to digital form and transmits the resulting frames of the video broadcast to a compressor 21. The compressor 21 compresses the frames in accordance with a compression ratio selected by the microcontroller 22 and transmits the compressed frames to a memory system indicated at 23 where the frames are stored at an addressable location established by the microcontroller 22. The microcontroller 22 also selects a location in the memory system 23 from which programming is to be read, and the retrieved signal is supplied to a decompressor 25 which translates the compressed information back into digitally expressed analog sample amplitude values which are supplied to a digital-to-analog converter 26. The converter 26 restores the retrieved video signal to its original analog form as received and the analog video signal is applied to a video display 30.

As noted earlier, when digital, compressed high definition television (HDTV) signals are selected by one of the tuners 17, the already compressed signals may be supplied to the write input of the memory subsystem 23 by a direct connection as indicated at 32. When such HDTV programming is selected for display, the stored digital compressed signals may passed directly to the HDTV display by a connection 33. The direct connections 32 and 33 by-pass the analog-to-digital conversion, compression, decompression and digital-to-analog conversion units since HDTV signals are broadcast in digital compressed form suitable for direct recording in the memory system 23, and are decompressed and converted into analog form for display within the standard HDTV receiving apparatus. The arrangement shown in FIG. 2 advantageously uses the same memory system to store either form of transmission.

The compressor 18 and decompressor 25 are preferably implemented by one of the available video encoder/decoder (codec) chip sets, such as Integrated Technology's (ITI) video processor, which supports both the H.261 video communications standard and multimedia standards MPEG and JPEG. Other video codec chip sets include the AT&T three-chip AVP-1000, GEC Plessey Semiconductors' VP2611 and a multi-standard chip set from Intel.

The memory system 23 is preferably comprised of primary high speed random access semiconductor memory 37 and a slower, secondary memory implemented by a high capacity magnetic disk device 39. Transfers to and from the random access memory are supervised by a direct memory access controller 41 which responds to memory access requests received from the microcontroller 22, the compressor 18, and the disk controller associated with disk memory 39.

The microcontroller 22 operates under program control to perform commands generated by a remote control 42 or alternatively by a personal computer 49 whose serial port may be connected to the serial port of the microcontroller 22. The microcontroller 22 comprises one or more integrated circuits to provide a processor, a read-only memory (ROM) which stores the programs executed by the processor, peripheral data handling circuits, and a random access read/write scratchpad memory for storing dynamically changing data. Such microcontrollers are available from a variety of sources and include the Intel386 family of devices which are described in detail in the Microprocessor and Peripheral Handbook, Volume 1 (1989), published by Intel Corporation, Literature Sales, Santa Clara, Calif.

The microcontroller 22 maintains a "circular buffer" in the memory system 23 in which the incoming video signal is continuously written to a continuously advancing memory location, writing over the oldest recorded data in the memory system as it advances the writing location. The read location, however, is completely under the control of the viewer who sends commands from the remote control unit 42 to the microcontroller 23 to perform the following functions:

PAUSE. The microcontroller 22 maintains the read point at its current location and repeatedly sends a single frame (video screen) of data to the display for stop-action viewing;

REPLAY. The microprocessor assembles single frame compressed data from equally spaced addresses in the random access memory 37 to form mosaic display frame, each frame consisting of set of reduced-size images which may be viewed simultaneously to reveal the contents of the buffer memory at spaced intervals. This mosaic presentation is periodically refreshed until the user selects a specific read point by number using the remote control 42 or personal computer 49, whereupon the microcontroller 22 sets the readpoint to the appropriate memory location and playback continues from that location. Note that this single control enables the user to not only replay past scenes, but to "fast forward" over unwanted programming (assuming the current read point is delayed from the write point by a duration at least equal to the programming to be bypassed.

CHANNEL SELECTION. The user may select a channel in the usual way (using numerical channel selection buttons), or may select the channel to be viewed (and recorded in the buffer) by commanding the tuner 10 to supply a sequence of frames from the available channel signals which are assembled, in compressed form, in the random access memory 37, from which they may be supplied via the decompressor 25 for display on the display unit 30. This picture-in-picture or "PIP" feature, commonly available only at added expense on conventional television receivers, is accordingly made available at little additional cost or complexity since the necessary instrumentalities are already available.

RESOLUTION. In addition to varying the read and write points the microcontroller 22 may also vary the compression ratio of the compressor 18 to increase the effective capacity of the buffer memory by reducing the resolution, color quality image size of the stored images, to vary the effective programming buffer capacity.

SLOW/FAST MOTION. Upon command from the control unit 42 or the computer 49, the microcontroller 22 may advance the read point at an increased or decreased rate commensurate with playback speed selected by the user.

REVERSE. In the reverse mode the direction of the read point is reversed so that .[.flames.]. .Iadd.frames .Iaddend.already transmitted to the display are retransmitted in a reverse order. The length of time the reverse mode may be invoked is limited by the number of .[.flames.]. .Iadd.frames .Iaddend.separating the read point and the write point.

It is to be understood that the specific arrangement which has been described is merely illustrative of one application of the principles of the invention. Numerous modifications may be made by those skilled in the art without departing from the true spirit and scope of the invention.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4821121 *24 Feb 198711 Apr 1989Ampex CorporationElectronic still store with high speed sorting and method of operation
US4862269 *20 Jul 198829 Aug 1989Sony CorporationMemory control apparatus
US4949187 *16 Dec 198814 Aug 1990Cohen Jason MVideo communications system having a remotely controlled central source of video and audio data
US4963995 *27 Dec 198816 Oct 1990Explore Technology, Inc.Audio/video transceiver apparatus including compression means
US4965662 *29 Jul 198823 Oct 1990Fuji Photo Film Co., Ltd.Video printer for making video image hard copies
US5099319 *23 Oct 198924 Mar 1992Esch Arthur GVideo information delivery method and apparatus
US5103467 *31 Oct 19897 Apr 1992Motorola, Inc.Asynchronous voice reconstruction for a digital communication system
US5126982 *10 Sep 199030 Jun 1992Aaron YifrachRadio receiver and buffer system therefore
US5130792 *1 Feb 199014 Jul 1992Usa Video Inc.Store and forward video system
US5132992 *7 Jan 199121 Jul 1992Paul YurtAudio and video transmission and receiving system
US5181114 *7 Mar 199119 Jan 1993Sony CorporationIncluding break slots in broadcast video signals
US5191431 *13 Aug 19902 Mar 1993Canon Kabushiki KaishaRecording apparatus having plural operating modes involving diverse signal compression rates and different apportioning of pilot signal recording area
US5241428 *12 Mar 199131 Aug 1993Goldwasser Eric PVariable-delay video recorder
US5283639 *10 Sep 19911 Feb 1994Esch Arthur GMultiple media delivery network method and apparatus
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6363440 *13 Nov 199826 Mar 2002Gateway, Inc.Method and apparatus for buffering an incoming information signal for subsequent recording
US6708251 *31 May 200116 Mar 2004Keen Personal Media, Inc.Disk drive having separate interfaces for host commands and audiovisual data
US674496720 Dec 20011 Jun 2004Scientific-Atlanta, Inc.Program position user interface for personal video recording time shift buffer
US67712683 Mar 20003 Aug 2004Sharp Laboratories Of America, Inc.Video skimming system utilizing the vector rank filter
US68136435 Jan 20012 Nov 2004Digeo, Inc.Multimedia system with selectable protocol module including MPEG logic and docsis logic sharing a single tuner
US690972627 Oct 200021 Jun 2005Broadband Royalty CorporationAdaptive bandwidth system and method for broadcast data
US697112120 Mar 200229 Nov 2005Scientific-Atlanta, Inc.Composite buffering
US697366212 Oct 20006 Dec 2005Starz Entertainment Group LlcMethod for providing programming distribution
US698348012 Oct 20003 Jan 2006Starz Entertainment Group LlcMethod for authorizing limited programming distribution
US69854162 Nov 200010 Jan 2006Thomson Licensing S.A.Buffer optimization for simultaneous encoding-decoding and pause-catch-up for real time DVD recorder
US702467912 Oct 20004 Apr 2006Svod LlcLocal near video on demand storage
US702833128 Feb 200111 Apr 2006Sharp Laboratories, Inc.Content proxy method and apparatus for digital television environment
US704374722 May 20009 May 2006Aceinc Pty LimitedMethods and apparatus for information broadcasting and reception
US70468058 Jun 200116 May 2006Digeo, Inc.System and method for efficiently storing and processing multimedia content
US70926228 Nov 200015 Aug 2006Thomson LicensingDVD recorder pause feature utilizing variable read rate
US709327730 May 200115 Aug 2006Digeo, Inc.System and method for improved multi-stream multimedia transmission and processing
US711751626 Jul 20023 Oct 2006Individual Networks LlcMethod and system for providing a customized media list
US712409126 Jul 200017 Oct 2006Individual Network, LlcMethod and system for ordering an advertising spot over a data network
US714995719 Nov 200112 Dec 2006Ricoh Company, Ltd.Techniques for retrieving multimedia information using a paper-based interface
US717810728 Oct 200413 Feb 2007Sharp Laboratories Of America, Inc.Audiovisual information management system with identification prescriptions
US718169128 Oct 200420 Feb 2007Sharp Laboratories Of America, Inc.Audiovisual information management system with presentation service
US71945635 Dec 200120 Mar 2007Scientific-Atlanta, Inc.Disk driver cluster management of time shift buffer with file allocation table structure
US719468728 Oct 200420 Mar 2007Sharp Laboratories Of America, Inc.Audiovisual information management system with user identification
US719468828 Oct 200420 Mar 2007Sharp Laboratories Of America, Inc.Audiovisual information management system with seasons
US719770928 Oct 200427 Mar 2007Sharp Laboratories Of America, Inc.Audiovisual information management system with multiple user identifications
US720085922 Nov 20003 Apr 2007Digeo, Inc.Apparatus and method for intelligent multimedia compression and distribution
US720362023 May 200210 Apr 2007Sharp Laboratories Of America, Inc.Summarization of video content
US72127837 Jul 20041 May 2007Motorola, Inc.System and method for managing content between devices in various domains
US721543618 Jun 20028 May 2007Ricoh Company, Ltd.Device for generating a multimedia paper document
US722855912 Oct 20005 Jun 2007Starz Encore Group LlcProgramming distribution and notification system
US724035912 Oct 20003 Jul 2007Starz Entertainment, LlcProgramming distribution system
US72573086 Dec 200114 Aug 2007Scientific-Atlanta, Inc.Converting time-shift buffering for personal video recording into permanent recordings
US726365919 Nov 200128 Aug 2007Ricoh Company, Ltd.Paper-based interface for multimedia information
US726367119 Nov 200128 Aug 2007Ricoh Company, Ltd.Techniques for annotating multimedia information
US726678219 Nov 20014 Sep 2007Ricoh Company, Ltd.Techniques for generating a coversheet for a paper-based interface for multimedia information
US72722986 May 199818 Sep 2007Burst.Com, Inc.System and method for time-shifted program viewing
US731283116 Sep 200325 Dec 2007Wegener Communications, Inc.Re-inserting VBI data using OSD apparatus and method
US7385649 *14 Apr 200410 Jun 2008Sony CorporationVideo display apparatus and method
US738612930 May 200110 Jun 2008Digeo, Inc.System and method for multimedia content simulcast
US740914010 May 20025 Aug 2008Scientific-Atlanta, Inc.Channel buffering and display management system for multi-tuner set-top box
US74514676 Jun 200311 Nov 2008Seachange International, Inc.Content/service handling and delivery
US745416626 Apr 200418 Nov 2008Xm Satellite Radio Inc.System and method for providing recording and playback of digital media content
US745751720 Sep 200425 Nov 2008Eric GodtlandAutomatic selection, recording and meaningful labeling of clipped tracks from broadcast media without an advance schedule
US746076214 Apr 20042 Dec 2008Godtland Eric JAutomatic selection, recording and meaningful labeling of clipped tracks from broadcast media without an advance schedule
US746373715 Aug 20019 Dec 2008Digeo, Inc.System and method for conditional access key encryption
US746439219 Nov 20029 Dec 2008Starz Encore Group LlcViewing limit controls
US749579518 Jun 200324 Feb 2009Ricoh Company, Ltd.Interface for printing multimedia information
US749907720 Aug 20013 Mar 2009Sharp Laboratories Of America, Inc.Summarization of football video content
US7499530 *15 May 20023 Mar 2009Telstrat Int'l, LtdSystem and method for on-demand recording
US750902026 Oct 200124 Mar 2009The Directv Group, Inc.Method and apparatus for fast forwarding and rewinding in a video recording device
US750956919 Jul 200424 Mar 2009Ricoh Co., Ltd.Action stickers for nested collections
US751231510 May 200231 Mar 2009Cisco Technology, Inc.Managing time shift buffers
US7529465 *20 Feb 20025 May 2009Tivo Inc.System for time shifting multimedia content streams
US753663816 Sep 200319 May 2009Ricoh Co., Ltd.Action stickers for identifying and processing stored documents
US75518325 Dec 200123 Jun 2009Scientific-Atlanta, Inc.Application management and interface for cluster control of time shift buffer
US755238131 Mar 200423 Jun 2009Ricoh Co., Ltd.Check boxes for identifying and processing stored documents
US7565056 *24 Jan 200321 Jul 2009Canon Kabushiki KaishaInformation data processing apparatus
US759675521 Feb 200229 Sep 2009Ricoh Company, Ltd.Multimedia visualization and integration environment
US760652630 Sep 200520 Oct 2009Xm Satellite Radio Inc.Method and apparatus for providing digital media player with portable digital radio broadcast system receiver or integrated antenna and docking system
US76313278 Aug 20018 Dec 2009Accenture Global Services GmbhEnhanced custom content television
US76392753 Jan 200529 Dec 2009Sharp Laboratories Of America, Inc.Summarization of football video content
US765783627 Sep 20022 Feb 2010Sharp Laboratories Of America, Inc.Summarization of soccer video content
US768880330 Sep 200230 Mar 2010Young Steven JSystem and method for coordinating between multiple telephony channels
US770300231 Mar 200320 Apr 2010Ricoh Company, Ltd.Method and apparatus for composing multimedia documents
US770304423 Dec 200420 Apr 2010Ricoh Company, Ltd.Techniques for generating a static representation for time-based media information
US773958331 Mar 200315 Jun 2010Ricoh Company, Ltd.Multimedia document sharing method and apparatus
US773970713 Apr 200415 Jun 2010Starz Entertainment, LlcParental controls using view limits
US774334720 Aug 200322 Jun 2010Ricoh Company, Ltd.Paper-based interface for specifying ranges
US774798212 Oct 200029 Jun 2010Starz Entertainment, LlcDistributing and storing content to a user's location
US775716215 Oct 200313 Jul 2010Ricoh Co. Ltd.Document collection manipulation
US77699255 May 20063 Aug 2010Scientific-Atlanta LLCDisk driver cluster management of time shift buffer with file allocation table structure
US777386011 Mar 200310 Aug 2010The Directv Group, Inc.Video data recorder with personal channels
US777481610 Feb 200310 Aug 2010Rovi Technologies CorporationConflict manager for a video recorder
US777918127 Feb 200717 Aug 2010Scientific-Atlanta, LlcDisk driver cluster management of time shift buffer with file allocation table structure
US777935530 Mar 200417 Aug 2010Ricoh Company, Ltd.Techniques for using paper documents as media templates
US780932620 Oct 20085 Oct 2010Xm Satellite Radio Inc.System and method for providing recording and playback of digital media content
US78098498 Jun 20015 Oct 2010Starz Entertainment, LlcPre-storing multiple programs with user control of playback
US785312015 Jan 200414 Dec 2010Aptiv Digital, Inc.Video recorder having user extended and automatically extended time slots
US790783314 Jan 200415 Mar 2011Thomson LicensingApparatus and method for communicating stop and pause commands in a video recording and playback system
US79459264 Dec 200917 May 2011Accenture Global Services LimitedEnhanced custom content television
US795004024 May 200724 May 2011Starz Entertainment, LlcProgramming distribution system
US795405617 Jun 200231 May 2011Ricoh Company, Ltd.Television-based visualization and navigation interface
US79620116 Dec 200114 Jun 2011Plourde Jr Harold JControlling substantially constant buffer capacity for personal video recording with consistent user interface of available disk space
US800541929 Dec 200623 Aug 2011Xm Satellite Radio Inc.System and method for securely storing and organizing SDARS content with DRM and non-DRM protected media content, and for facilitating obtaining purchased or subscription-based media based on received SDARS content
US80184913 Jan 200513 Sep 2011Sharp Laboratories Of America, Inc.Summarization of football video content
US80201868 Mar 200513 Sep 2011Starz Entertainment, LlcMethods and systems for distributing on-demand programming
US80282348 Mar 200527 Sep 2011Sharp Laboratories Of America, Inc.Summarization of sumo video content
US80375016 May 200511 Oct 2011Starz Entertainment, LlcMethods for entertainment-programming distribution
US80514466 Dec 19991 Nov 2011Sharp Laboratories Of America, Inc.Method of creating a semantic video summary using information from secondary sources
US80858047 Mar 200727 Dec 2011Arris Group, Inc.System and method for processing multiple broadcast multimedia streams
US811661117 Sep 200314 Feb 2012Aptiv Digital, Inc.Tuner sharing video recorder system architecture
US811763815 Aug 200614 Feb 2012Arris Group, Inc.System and method for improved multi-stream multimedia transmission and processing
US81399247 Jul 200620 Mar 2012Tivo Inc.System and method for digital content retrieval
US817651625 Nov 20098 May 2012Aptiv Digital, Inc.Video recorder having user extended and automatically extended time slots
US818592927 May 200522 May 2012Cooper J CarlProgram viewing apparatus and method
US835299010 May 20118 Jan 2013Encore Interactive Inc.Realtime broadcast stream and control data conversion system and method
US842842714 Sep 200523 Apr 2013J. Carl CooperTelevision program transmission, storage and recovery with audio and video synchronization
US842843824 Mar 200323 Apr 2013The Directv Group, Inc.Apparatus for viewing television with pause capability
US84985681 Oct 201030 Jul 2013Sirius Xm Radio Inc.System and method for providing recording and playback of digital media content
US85324665 Nov 201010 Sep 2013Aptiv Digital, Inc.Video recorder having user extended and automatically extended time slots
US853934419 Nov 200117 Sep 2013Ricoh Company, Ltd.Paper-based interface for multimedia information stored by multiple multimedia documents
US85655786 Dec 200122 Oct 2013Harold J. Plourde, Jr.Dividing and managing time-shift buffering into program specific segments based on defined durations
US85841715 May 200612 Nov 2013Starz Entertainment Group LlcLocal context navigation system
US860678214 Jun 200410 Dec 2013Sharp Laboratories Of America, Inc.Segmentation description scheme for audio-visual content
US863553118 Jun 200321 Jan 2014Ricoh Company, Ltd.Techniques for displaying information stored in multiple multimedia documents
US867567527 Dec 201118 Mar 2014Arris Enterprises, Inc.System and method for processing multiple broadcast multimedia streams
US86879496 Mar 20121 Apr 2014Tivo Inc.System and method for digital content retrieval
US87073578 Mar 200522 Apr 2014Starz Entertainment, LlcThematic VOD navigation
US87390404 Nov 200327 May 2014Ricoh Company, Ltd.Multimedia visualization and integration environment
US87696015 Mar 20101 Jul 2014J. Carl CooperProgram viewing apparatus and method
US880654912 Oct 200012 Aug 2014Starz Entertainment, LlcPre-storing a portion of a program to allow user control of playback
US88131237 Nov 200319 Aug 2014Interad Technologies, LlcContent with customized advertisement
US88393137 Jan 201316 Sep 2014Encore Interactive Inc.Realtime broadcast stream and control data conversion system and method
US20110202936 *30 Sep 201018 Aug 2011Sony Ericsson Mobile Communications Japan, Inc.Terminal apparatus and method of controlling terminal apparatus with multi-tasking features
USRE4332515 Sep 200924 Apr 2012Tivo Inc.System and method for time-shifted program viewing
EP1309191A2 *22 Oct 20027 May 2003Funai Electric Company LimitedInformation recording/reproducing apparatus
EP1325615A2 *27 Sep 20019 Jul 2003Intellprop LimitedTelecommunications services apparatus for accessing stored broadcasts
EP1452031A2 *21 Nov 20021 Sep 2004Scientific-Atlanta, Inc.Application management and interface for cluster control of time shift buffer
EP1821536A1 *7 Feb 200722 Aug 2007LG Electronics Inc.Method for time shift and television receiver
EP1936982A2 *21 Feb 200225 Jun 2008United Video Properties, Inc.Systems and method for interactive program guides with personal video recording features
EP2265008A1 *21 Feb 200222 Dec 2010United Video Properties, Inc.Systems and methods for interactive program guides with personal video recording features
WO2003051030A2 *21 Nov 200219 Jun 2003Scientific AtlantaManagement and control of buffer in client device
Classifications
U.S. Classification348/571, 348/714, 386/328
International ClassificationH04N21/4147, H04N5/44, H04N5/76
Cooperative ClassificationH04N5/76, H04N5/44, H04N21/4147, H04N5/4448
European ClassificationH04N21/4147, H04N5/44, H04N5/76, H04N5/44U
Legal Events
DateCodeEventDescription
2 Oct 2012ASAssignment
Effective date: 20120622
Owner name: MOTOROLA MOBILITY LLC, ILLINOIS
Free format text: CHANGE OF NAME;ASSIGNOR:MOTOROLA MOBILITY, INC.;REEL/FRAME:029216/0282
13 Dec 2010ASAssignment
Owner name: MOTOROLA MOBILITY, INC, ILLINOIS
Effective date: 20100731
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MOTOROLA, INC;REEL/FRAME:025673/0558
28 Oct 2008ASAssignment
Owner name: MOTOROLA, INC., ILLINOIS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PAUSE TECHNOLOGY LLC;REEL/FRAME:021744/0405
Effective date: 20080509
26 Oct 2006SULPSurcharge for late payment
Year of fee payment: 11
26 Oct 2006FPAYFee payment
Year of fee payment: 12
15 Jul 2002FPAYFee payment
Year of fee payment: 8
15 Jul 2002SULPSurcharge for late payment
Year of fee payment: 7
4 Jan 2001ASAssignment
Owner name: LOGAN, BERNICE C., TRUSTEE OF THE JAMES D. LOGAN A
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LOGAN, JAMES D.;REEL/FRAME:011390/0986
Effective date: 19980528
Owner name: LOGAN, JAMES D., NEW HAMPSHIRE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GOESSLING, DANIEL F.;REEL/FRAME:011400/0213
Effective date: 19930106
Owner name: LOGAN, JAMES D. 81 CASTLE HILL ROAD WINDHAM NEW HA
Owner name: LOGAN, JAMES D. 81 CASTLE HILL ROADWINDHAM, NEW HA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GOESSLING, DANIEL F. /AR;REEL/FRAME:011400/0213
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LOGAN, JAMES D. /AR;REEL/FRAME:011390/0986