CA1296774C - Portable radiotelephone with control switch disabling - Google Patents
Portable radiotelephone with control switch disablingInfo
- Publication number
- CA1296774C CA1296774C CA000599012A CA599012A CA1296774C CA 1296774 C CA1296774 C CA 1296774C CA 000599012 A CA000599012 A CA 000599012A CA 599012 A CA599012 A CA 599012A CA 1296774 C CA1296774 C CA 1296774C
- Authority
- CA
- Canada
- Prior art keywords
- portable radiotelephone
- radiotelephone apparatus
- accordance
- hook
- hook condition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
- H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
- H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
- H04M1/0241—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call
- H04M1/0245—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call using open/close detection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
- H01H3/161—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid
- H01H3/162—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid associated with a hinge of the closing member
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
- H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
- Telephone Set Structure (AREA)
- Telephone Function (AREA)
- Keying Circuit Devices (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Structure Of Receivers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Networks Using Active Elements (AREA)
- Lock And Its Accessories (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Abstract of the Disclosure A portable radiotelephone with control switch disabling is disclosed. A flip element which contains a microphone and covers a keypad and other control buttons when in a closed position also activates a hookswitch.
When the hookswitch and microprocessor indicate that the flip element is in a closed position, the on/off switch cannot be activated to turn the portable radiotelephone on or off and switches which control volume level are deactivated.
When the hookswitch and microprocessor indicate that the flip element is in a closed position, the on/off switch cannot be activated to turn the portable radiotelephone on or off and switches which control volume level are deactivated.
Description
9677~
PORTABLE RADIOTE~EPHONE WITH CONTROL SWITCH DISABLING
Background of the Invention This invention relates generally to portable telephone apparatus and more particularly to portable radiotelephonas which utilize switches or similar elemen~s ~or control functions and a keypad for dialing tolephone numbers.
Telephones having a rotary or pushbutton dial mechanism and other button~ integral to the handset portion have become commonplace in lan~line subscriber stations. This arrangement offers thQ telephone user the convenience of bringing the user interface mechanism and control button3 close to th~ user.
Radiotelephona operation, such as that offered in cellular radiotelephone or in cordless telephone sets, ~ov~des a mobility to the telephone user which landline telephons does not provide. The lack of a cord and the small size o~ the portablo radiotelephone unit enableR
the user to carry th~ unit es~entially wherever the user goes. This portabillty, howeYer, allows the portable unit to be placed in locations where ~oreign objects may come in contact with the usar interface mechanism a~d activate number or control buttons. Some protection may - ~ 2~9~77~
PORTABLE RADIOTE~EPHONE WITH CONTROL SWITCH DISABLING
Background of the Invention This invention relates generally to portable telephone apparatus and more particularly to portable radiotelephonas which utilize switches or similar elemen~s ~or control functions and a keypad for dialing tolephone numbers.
Telephones having a rotary or pushbutton dial mechanism and other button~ integral to the handset portion have become commonplace in lan~line subscriber stations. This arrangement offers thQ telephone user the convenience of bringing the user interface mechanism and control button3 close to th~ user.
Radiotelephona operation, such as that offered in cellular radiotelephone or in cordless telephone sets, ~ov~des a mobility to the telephone user which landline telephons does not provide. The lack of a cord and the small size o~ the portablo radiotelephone unit enableR
the user to carry th~ unit es~entially wherever the user goes. This portabillty, howeYer, allows the portable unit to be placed in locations where ~oreign objects may come in contact with the usar interface mechanism a~d activate number or control buttons. Some protection may - ~ 2~9~77~
be o~ered by a device which covers the user interface mechanism and control buttons when not in use but small objects such as coins, paperclips, etc. may be trapped between the cover and the mechanism. Undesired operation 05 of button~ in a radiotelephone setting may turn the equipment on or off, cause transmissiLon of unwanted signals and prevent use of a radio channel, or cause undesired functions to occur. Such ~mdesired activation of buttons is likely to engage functions which reduce the operating life of the battery which powers the portable unit.
Some cordless telephones have been offered in the United States which disable the dialling, number memory, and call processing functions when a cover is clo~ed over the dialllng keypad. one such cordles~ telephone is manufactured by the Panasonic Company as model number KX-T3000. While of~ering protection against ~alse telephone number and call processing, the on-off switch and volume control remain cubject to undesired activation. Although it might appear that simply turning the unit on or off when tha cover is clo~ed would solve all unwanted operation, an operational state i~ nece~sary in which the unit i~ capable of receiving a call and alerting the user but not o~ taking any other unwanted actions. Such a call receiving state should be enabled by the user and not be sub~ect to accidental deactivation by an unwanted s~itching o~f o~ the unit. Furthermore, if the unit has purposefully been switched off by the user, it should not be unusually subject to being accidentally swîtched on.
Summary of the Invention It is, tharefore, one object of the present invention to prevent unwanted operation of dial and control button mechanisms by foreign ob~ects which may be trapped between the mechanisms and a cover.
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Some cordless telephones have been offered in the United States which disable the dialling, number memory, and call processing functions when a cover is clo~ed over the dialllng keypad. one such cordles~ telephone is manufactured by the Panasonic Company as model number KX-T3000. While of~ering protection against ~alse telephone number and call processing, the on-off switch and volume control remain cubject to undesired activation. Although it might appear that simply turning the unit on or off when tha cover is clo~ed would solve all unwanted operation, an operational state i~ nece~sary in which the unit i~ capable of receiving a call and alerting the user but not o~ taking any other unwanted actions. Such a call receiving state should be enabled by the user and not be sub~ect to accidental deactivation by an unwanted s~itching o~f o~ the unit. Furthermore, if the unit has purposefully been switched off by the user, it should not be unusually subject to being accidentally swîtched on.
Summary of the Invention It is, tharefore, one object of the present invention to prevent unwanted operation of dial and control button mechanisms by foreign ob~ects which may be trapped between the mechanisms and a cover.
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It i~ another object o~ the pre~ent invention ko disable the power on-off button when the csver is closed to prevent such unwanted operation.
05 It is a further object o~ the present i~ention to deactivate the volume control when th.e cover i closed.
Accordingly, these and other Qb~ects are realized in the present invention which encompasses a portable radiotelepone having a keypad covered by a movable element which produc~s an on hook conditio~ when the movable element ls in a first poRition covering the keypad and which produces an off-hook condition when the movable element is in a second position exposing t~le keypad. When an on-hook aondition i~ produced, a swikchable power source i9 pr~vented ~rom being switched on or of~.
Brief Description o~ the Drawinqs Figure l is an isometric drawing o~ a portable radiotelephonQ which may e~ploy tha present invention.
Figure 2 ia a side view o~ the portable radiotelephon~ of Fig. l in which a foreign ob;ect may be trapped between the flip cover elemant and the user inter~ace.
Figure 3 i~ a diagram o~ th~ hookswitch ~witch mechani~m which may bo employed in the radiotelephone of Fig. l~
Figure 4 i9 a ~chematic diagram of the slave microcomputer which may employ the present invention.
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05 It is a further object o~ the present i~ention to deactivate the volume control when th.e cover i closed.
Accordingly, these and other Qb~ects are realized in the present invention which encompasses a portable radiotelepone having a keypad covered by a movable element which produc~s an on hook conditio~ when the movable element ls in a first poRition covering the keypad and which produces an off-hook condition when the movable element is in a second position exposing t~le keypad. When an on-hook aondition i~ produced, a swikchable power source i9 pr~vented ~rom being switched on or of~.
Brief Description o~ the Drawinqs Figure l is an isometric drawing o~ a portable radiotelephonQ which may e~ploy tha present invention.
Figure 2 ia a side view o~ the portable radiotelephon~ of Fig. l in which a foreign ob;ect may be trapped between the flip cover elemant and the user inter~ace.
Figure 3 i~ a diagram o~ th~ hookswitch ~witch mechani~m which may bo employed in the radiotelephone of Fig. l~
Figure 4 i9 a ~chematic diagram of the slave microcomputer which may employ the present invention.
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Figure 5 is a schematic diagram of the master microcomputer which may employ the present invention.
Figure 6 is a flowchart of the deacti~ation process 05 whlch may be employed in the present invention.
Figure 7 i5 a flowchart of the master microcomputer process of deactivation employed in the present invention.
Figures 8A and 8B, combined, are a flowchart o~ the slave microcomputer process of deactivation employed in the present invention.
Figure 9 is a ~lowchart of the master microcomputer proce~s o~ activation/deactivation o~ the power switch upon initial power-up o~ the master microcomputer as employed in the present invantion.
Figure 10 i~ a flowchart of the activation/deactivation of the power switch after initial power-up o~ the master microcomputer as employed in the present invention.
Description of the Preferred Embodiment A portable radiotelephone adapted to be used in a cellular radiotelephone system is shown in Figure 1.
This portable unit consists of two readily apparent portions, a body portion 102 and a flip element portion 104. The drawing of Fig. 1 shows the flip element 104 in an "open" position such that a user of the portable unit may listen via earpiece 106 and may speak into the microphone 107. The dial or keypad 110 consists of a plurality of buttons nu~bered one through zero, # and *,in familiar telephone arrangement as well as additional 6779~
Figure 6 is a flowchart of the deacti~ation process 05 whlch may be employed in the present invention.
Figure 7 i5 a flowchart of the master microcomputer process of deactivation employed in the present invention.
Figures 8A and 8B, combined, are a flowchart o~ the slave microcomputer process of deactivation employed in the present invention.
Figure 9 is a ~lowchart of the master microcomputer proce~s o~ activation/deactivation o~ the power switch upon initial power-up o~ the master microcomputer as employed in the present invantion.
Figure 10 i~ a flowchart of the activation/deactivation of the power switch after initial power-up o~ the master microcomputer as employed in the present invention.
Description of the Preferred Embodiment A portable radiotelephone adapted to be used in a cellular radiotelephone system is shown in Figure 1.
This portable unit consists of two readily apparent portions, a body portion 102 and a flip element portion 104. The drawing of Fig. 1 shows the flip element 104 in an "open" position such that a user of the portable unit may listen via earpiece 106 and may speak into the microphone 107. The dial or keypad 110 consists of a plurality of buttons nu~bered one through zero, # and *,in familiar telephone arrangement as well as additional 6779~
function buttons such as "sand", "end", "on-off", and other buttons associated with memory recall. Dispos~d on the side of the body portion 102 are two volume control buttons: volume increase 108 and volume decrease 109, which may adjust the volume of the earpiece and/or the 05 ringer.
When th~ flip element 104 is open as sAown in Fig.
1, the portable aellular telephone can be in the state of answering or making a telephone call Such a state is commonly known as "off-hook". ~It should be noted that in the cellular system an additional operakor activity is required to plac~ a call: upon entering a telephone number to be dialed, the send button must be depressed in order to activate the portable unit's transmitter and to complete the call. In the preferred embodiment, the send button may also be used to answer a call ir the ~lip element is already open). Upon completlon of the tel~phone call, the user may hang up the portable telephone (go "on-hook") by moving the flip element 104 into a stowed position, that is, rotated about the axis of hinges 112 and 114 so that the f l ip e}ement 104 rests nearly against keypad 110. This action activateC a hookswitch ~KS) which cau~es the telephone call to be terminated. Depression of the end button without ~; closing th~ ~lip element may also terminate the call.
Activation of the hookgwitch occurs in the preferred embodiment when the angle between the body 102 and the flip element 104 equals approx.tmately 45. The closing of the glip element 104 can best be perceived in Fig. 2.
It can be imagined that should a foreign o~ject 202 become lodged between the flip element 104 and the body 102, undesired Xey depres ions of keypad 110 might occur.
Th~ hookswitch in the pre~erred e~bodimen~ is ; located between the flip element 104 and the body portion 102 and may be seen in th~ detail o~ Pig. 3. A contact 302 consisting of a conventional conductive spring material is disposed in hinge 114 of flip elem2nt 104 and ~29~i7~
When th~ flip element 104 is open as sAown in Fig.
1, the portable aellular telephone can be in the state of answering or making a telephone call Such a state is commonly known as "off-hook". ~It should be noted that in the cellular system an additional operakor activity is required to plac~ a call: upon entering a telephone number to be dialed, the send button must be depressed in order to activate the portable unit's transmitter and to complete the call. In the preferred embodiment, the send button may also be used to answer a call ir the ~lip element is already open). Upon completlon of the tel~phone call, the user may hang up the portable telephone (go "on-hook") by moving the flip element 104 into a stowed position, that is, rotated about the axis of hinges 112 and 114 so that the f l ip e}ement 104 rests nearly against keypad 110. This action activateC a hookswitch ~KS) which cau~es the telephone call to be terminated. Depression of the end button without ~; closing th~ ~lip element may also terminate the call.
Activation of the hookgwitch occurs in the preferred embodiment when the angle between the body 102 and the flip element 104 equals approx.tmately 45. The closing of the glip element 104 can best be perceived in Fig. 2.
It can be imagined that should a foreign o~ject 202 become lodged between the flip element 104 and the body 102, undesired Xey depres ions of keypad 110 might occur.
Th~ hookswitch in the pre~erred e~bodimen~ is ; located between the flip element 104 and the body portion 102 and may be seen in th~ detail o~ Pig. 3. A contact 302 consisting of a conventional conductive spring material is disposed in hinge 114 of flip elem2nt 104 and ~29~i7~
rotates with the flip element 104 A printed circuit board element 304 is disposed in the body portion 102 in a position such that the contact 3 02 presses against the - circuit board element 304. Metalization disposed on 05 printed circuit board element 304 is positioned such that when the flip element 104 is opened to an a~gle of 45, an electrical connection is completedl between the metalization through the contac~ 302 to ground. The combination o~ the contact 302 and the printed circuit board element 304 iq the hookswitch (HKS) 306.
In the preferred embodiment, two interconnected microcomputer sy~tems are utilized to control th~ basic functions o~ the portable unit ~the master microcomputer) and to contxol th0 key pad and display ~unctions ~the slave microaomputer). ~he slavc microcomputer i~ shown in the schematic of Fig. 4. ~he slave microcomputer system consist~ o~ a microprocessor 402 which, in the preferred embodiment, is an MC68~C05C4 microprocessor (which also has on-board memory). The basic function of ~ 20 the slave microprocessor is to provide interface to the : user of the portabl~ radiotelepone via Xeyboard, display, and othPr buttons and indicators. The slave microprocessor i3 coupled to a multi-segment display 404 which, in the pr~ferred embodiment, iB a conventional LED
eight digit display. ~he slave microprocessor 402 is also coupled to a keypad matrix of buttons 110l which enable~ the portable radiotelephone user to input (dial) telephone number~, storQ and recall telephone n~m~er information, and perform other radlotelephone functions (such as initiating a telephone call). In the preferred embodiment, one of the key~ 408 of the matrix 1101 iS
specially dedicat~d to the function of turning the power on and o~. Power on/off i5 accomplished by a momentary : switch closure (by key 408) to ground which activates on/of~ cirouitry. Volumo increa e switch la8' and volume decrease swltch 109' are electrically coupled to the ' 6~
In the preferred embodiment, two interconnected microcomputer sy~tems are utilized to control th~ basic functions o~ the portable unit ~the master microcomputer) and to contxol th0 key pad and display ~unctions ~the slave microaomputer). ~he slavc microcomputer i~ shown in the schematic of Fig. 4. ~he slave microcomputer system consist~ o~ a microprocessor 402 which, in the preferred embodiment, is an MC68~C05C4 microprocessor (which also has on-board memory). The basic function of ~ 20 the slave microprocessor is to provide interface to the : user of the portabl~ radiotelepone via Xeyboard, display, and othPr buttons and indicators. The slave microprocessor i3 coupled to a multi-segment display 404 which, in the pr~ferred embodiment, iB a conventional LED
eight digit display. ~he slave microprocessor 402 is also coupled to a keypad matrix of buttons 110l which enable~ the portable radiotelephone user to input (dial) telephone number~, storQ and recall telephone n~m~er information, and perform other radlotelephone functions (such as initiating a telephone call). In the preferred embodiment, one of the key~ 408 of the matrix 1101 iS
specially dedicat~d to the function of turning the power on and o~. Power on/off i5 accomplished by a momentary : switch closure (by key 408) to ground which activates on/of~ cirouitry. Volumo increa e switch la8' and volume decrease swltch 109' are electrically coupled to the ' 6~
slave mieroprocessor 402 as part of the row/column matrix. Their physical location is away from the keypad 110' to allow for greater user convenience.
The function which is normally performed by a 05 hookswitch in a conventional landline telephone is performed in the portable radiotelephone of the present invention as previously described in relation to Fig. 3.
The hookswitch is shown schematically as switch 306 in Fig~ 4. A DC (Direct Current) circuit is made or broken by HKS 306 to ground and applied to ~icroprocessor 402. Furthermore, a pulse is generated from any change of stata of the HKS 306 by a transistor 410 capacitors 412 and 414 and resistors 416, 418, and 419. Th~ output of transistor 410 i~ taken from the collactor and applied to the interrupt request ~IRQ) input and the keypad column inputs of microprocessor 402 having a negative duration of approximately 10 micro~eaonds.
MicroprocQssor 402 stores the status o~ ~KS 306 and provide~ an indication of the change of state of HXS 306 to the mastsr microprocessor.
Communication between the slave microprocessor 402 and the master microprocessor is maintained on a data bus 420. This data bus 420 is coupled to the master microprocessor 502 a3 shown in Fig. 5 of the master microcomputer. Othar function~ also sharo the data bus 420: the portabl~ radiotelephona transceiver 504 accepts radio channe} synthesizer information and me~sage encoding/deco~ing from the bus 420, and spQcialized watchdog functions 506 operate from instructions given on bus 420. In the preferred embodiment, master -microprocessor is realized by a conventional 68HCll microproces~or. The remainder of the microcomputer associated with microprocessor 502 consists of memory 508, which in the preferred embodiment may be a plurality of conventional ~, EPROMS, 3~ r EEPRCMS, a~d a specialized power controller 510 which per~orms the functions of . ~ .
, ~
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~ 8 ~ ~E00046R
turning on and off the several di~erent voltages reguired by the dif~erent portable transceiver functions, as well as conditioning the on/off s:ignal. In order to aid in the understanding of the operation of the present 05 invention, peripheral power switching circuits such as external power sen3ing and memory keep-alive are cmitted from FigO 5 and the descriptiYe text.
Assuming that the portable radiotelephone has been powered-up and the ~lip element has been opened to enable the HKS, a Xeypad 110 pushbutton activation by the portable radiotelepone user results in a communication between the slave microprocessor 402 and the master mlcroprocessor 502 via the bus 420. The slave microprocessor 402, in the preferred ambodiment, communicates that a closure ha~ occurred between a particular row and a particular column correspondlng to the key pressed by th~ user. The master microprocessor 502 may then take the appropriate action, such as rsturning a digit instruction via bus 420 for the slave microprocsssor 402 to cause the display 404 to illuminate or otherwise display. Thus, the slave micorprocessor 402 is commanded by the master microprocessor 502 or the user in order to complete an assignment.
When both the slava microprocessor 402 and the master microprocessor 502 operate together, the process shown in Fig. 6 is that which i9 followed to determine if the keypad keys and control switche~ should cause a response by the portabl~ radiotelephone. Since it is an important featura of the present invention to disable the user interface when ths flip element iB closed, this feature is incorporated into the process o~ Fig. 6.
Although the preferred embodiment has been i~plemented employing two micrprocessors, this should not be a ; limitation of the invention for it is possible to implement the present invention in a single microprocessor should the de~igner so desire. For either , ..
. . .
1~36~7~`
a single microprocessor or a multiple microprocessor system, the microprocessors may be interrupt driven in order to save battery power. The process of Fig. 6, therefore, commences with an interrupt due to a change of state of the hookswitch 306 or a key closure from keypad 05 110 to enable the microcomputer syste~ at 602. A
determination i9 made, at 604, whethex the flip element is open or clos~d. If the flip element is open, then the keypad 110 is read to determine which key has been closed at 606. If a key has been depressed at 608, then the function or charactex designated by the key is acted upon at 610. If a keypad 110 key has not been depressed, then no action is taken and the microcomputer system resumas its normal function3 of contro}ling th~
transcQiver, tha di~play, and other housekeeplng chores as shown at 612. If it i8 determined that th~ ~lip element is not open (at 604), then any ~eypad )cey depression i9 considered to be spurious and is ignored by progressing directly from the determination block at 604 to the normal housekeeping functions block at 612. The entire process is repeated for a predetermined period of time until a determination is made that the mlcroccmputer system should go into a low power consumption mode as deterined at 614. ~he microcomputer system is put into a "sleep" state at 616 and only the low power functions await for an interrupt signal at 618.
If the microcomputer system i9 implemented as a master and a slaYe microcomputer, then master microproc~ssor utilizes the process shown tn Fig. 7 (as part of its standard operating procedure) to prevent spuriou~ key depression~ from activating the portable transceiver. Since the slave microprocessor 402 can send either a flip element closed indication or a flip open indication, a detection of those indications is necessary by the master microcomputer. A test is made, at 702, of ~:~ 35 whether a flip element closed indication has been 67~
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received from the ~lave microprocessor 402 on the bus 420. If a flip element closed indication is received, then the master microprocessor 502 sends a keypad disable command, at 704, to the slave microprocessor 402 on the 05 bus 420. The master microcomputer then returns to its programmed routine of chores. If a flip element closed indication is not received, at 702, 1:hen a test is made of whethar a flip element open lndiccltion has been received from the slave microprocessor 402, at 706. If such an indication has been received by the master microprocessor 502, then a command is sent to the slave microprocessor 402 on the bus 420 to enable the slave microprocessor 402 to again read any keypad button depressions and to send such information to the master microproces~or 502. Upon completion o~ the enable command, the master microproces~or 502 returns to its routine chore~.
The process followed by the slave microcomputer in realizing the present invention in the preferred embodiment is shown in Figs. 8A and 8B. The slave microprocessor 402 memorizes the state of the hookswitch 306 corresponding to whether the flip element is open or closed. The slave microprocessor 402 determinss, as part of its routine of chores, whether the hookswitch 306 ~as changed state by comparing th~ current state against the stored stats at 802 and 804. If the state is different, then a determination is made, at 806, whether the flip element i~ open or closed. If the flip element is determined to be open, then an oper. flip element command is transmitted to the master microprocessor at 808. If the determination at 806 yield~ a closed flip element, then a closed flip element command is conveyed to the master microprocessor at 810. In either case the master microprocessor 502 always maintains the flip element ; ~ 35 state in its associated storage. The slave miaroprocessor, as part of its routine of chores, checks ~' .
~29~77~
~ CE00046R
for a keypad enable or a keypad disable command received from the master microprocessor 502. This determination is made at decision blocks 812 and 814. A keypad enable command sets a ke~pad enable flag in microprocessor 402 05 memory at 816, while a keypad disable command clears the keypad enable flag at 818 before the process of Fig. 8 resumes its normal background flow. Further along the normal background process, the slave microprocessor 402 reads the keypad enable flag, at 820, and reads the row and column lines from the keypad in addition to the volume increase switch 108 and the volume decrease switch 109, at 822, to determine if any key or switch has been depressed ~such determination made at 824). If a key or switch has been depressed, then an identl~ication of the key or switch depres~ion i9 sent to the master microprocessor at 826. The process of Fig. 8 then returns to the normal slavQ microprocsssor background function~. Thus, if the flip element is determined to be open, then the keys of the keypad and the volume increase and d2crease switches are read in conventional fashion.
I~ the flip element i~ determined to be closed, then the keys o~ the keypad and the volume increase and decrease switches are ignored. Ther~ is, however, one further exception.
The on/off key i9 also covered and protected by the flip element. In the preferred embodiment, the on/off key is placed among the matrix of kevpad keys for aesthetic reasons. It i~ a desirable feature that once the power i~ turned on, the portable transceiver remain in a power-on mode and not be turned off due to a spurious on/off key depression when the flip element is closed. Likewise, when the portabls transc~iver is turned off, it is equally desirable that the portable transceiver remain in the power-off condition even though a spurious on/off key depression may occur when the flip element is closed. Two processes enable this operation.
.
2967~4 Depressions of the on/off key are ignored when the flip element is closed. Referring again to Fig~ 4, when a momentary depression of the on/off switch 408 occurs, a grsund is applied to the on/off line ancl to the power controller 510 of Fig. 5. The ground, applied through switch 408, is buffered by power controller 510 and applied to the master microprocessor 502 via line 512.
Upon receipt of this buffered on/off signal on line 512, the master microprocessor 502 follows the process flowcharted in Fig. 9. The master microprocessor 502 and the rest of the associated microcomputer system undergoes a reset operation at 902 and requests a system characterization (a definition of what peripherals exist on the bus) at 904. As part of the characterization process, the slave microprocessor 402 reports the state of the flip element. The current flip element state is then stored, at 905. The master microprocessor then determines if the flip element is open, at 906. If this determination is positive, then the master microcomputer proceeds with its normal wake-up and housekeeping routines. If the flip element is determined to be closed at 906, then a check is made to determine if an external supply has been connected to the portable radiotelephone (at 908). Such a circuitry sharing arrangement is further described in Canadian Patent Application No.
574,300, "Radio Arrangement. Having Two Radios Sharing Circuitry", filed on behalf of Michael P. Metroka on October 8, 1988. If an external supply is determined to exist at 908, then the master microprocessor 502 returns to its normal housekeeping routines. If an external supply is not connected, then a power turn off routine is followed at 910. (Power turn off is accomplished by the master microprocessor 5Q2 by storing its status and other essential parameters in memory before allowing the watchdog functions 506 of Fig. 5 to runout. A watchdog "
-1%~'7~
power function runout is communicated to the power controller 510 which subsequently tuxns off the porkable radiotelephone).
Once the master microcomputer has successfully 05 powered up, any on/off switch depressions are ignored so long as the flip element is closed (as shown in the process of Fig. 10). A determination of the signal sense on lina 512 of Fig. 5 is made by the master microprocessor 502 at 1002. I~ the sense is a signal high, then the master miaroproces~or continues with its background routines. If the sense is low, then the master microprocessor 502 reads the status o~ tha flip element storage (at 1014) and either proceeds with a turn o~ routine ~at 1016) i~ the flip element i8 open, or ignores a depre~sion o~ the on/or~ swikch as a spurious depression i~ the flip element i9 closed. Thus, a valid on/o~ command may be proce~ed only i~ the flip element is open.
In summary, then, a portable radiotelephone having the capability of ignoring spuriou~ control switch inputs ha~ been hown and de~cribed~ A flip element which covers a keypad and other control button~ when in a clo~ed position also activate~ a hookswitch. Wh~n the hookswitch and microprocessor indicate that the flip element iB in a closed position, the on/of~ switch cannot be activated to turn the portable radiotelephone on or off. Alqo, switches which control volume level ar~
deactivated when ths flip element is in the closed po3ition. While a particular embodiment of tha invention has been shown and described, it is to be understood that tha inventlon is not to be taken a9 limited to the specific embodiment herein, and that changes and modification~ may be made without departing from the true spirit o~ tha in~ention. It i~ conte~plated therefore to cover the present invention, and any and all such changes and modification , by ~he appended claims.
We claim:
.
The function which is normally performed by a 05 hookswitch in a conventional landline telephone is performed in the portable radiotelephone of the present invention as previously described in relation to Fig. 3.
The hookswitch is shown schematically as switch 306 in Fig~ 4. A DC (Direct Current) circuit is made or broken by HKS 306 to ground and applied to ~icroprocessor 402. Furthermore, a pulse is generated from any change of stata of the HKS 306 by a transistor 410 capacitors 412 and 414 and resistors 416, 418, and 419. Th~ output of transistor 410 i~ taken from the collactor and applied to the interrupt request ~IRQ) input and the keypad column inputs of microprocessor 402 having a negative duration of approximately 10 micro~eaonds.
MicroprocQssor 402 stores the status o~ ~KS 306 and provide~ an indication of the change of state of HXS 306 to the mastsr microprocessor.
Communication between the slave microprocessor 402 and the master microprocessor is maintained on a data bus 420. This data bus 420 is coupled to the master microprocessor 502 a3 shown in Fig. 5 of the master microcomputer. Othar function~ also sharo the data bus 420: the portabl~ radiotelephona transceiver 504 accepts radio channe} synthesizer information and me~sage encoding/deco~ing from the bus 420, and spQcialized watchdog functions 506 operate from instructions given on bus 420. In the preferred embodiment, master -microprocessor is realized by a conventional 68HCll microproces~or. The remainder of the microcomputer associated with microprocessor 502 consists of memory 508, which in the preferred embodiment may be a plurality of conventional ~, EPROMS, 3~ r EEPRCMS, a~d a specialized power controller 510 which per~orms the functions of . ~ .
, ~
~2~ 7~
~ 8 ~ ~E00046R
turning on and off the several di~erent voltages reguired by the dif~erent portable transceiver functions, as well as conditioning the on/off s:ignal. In order to aid in the understanding of the operation of the present 05 invention, peripheral power switching circuits such as external power sen3ing and memory keep-alive are cmitted from FigO 5 and the descriptiYe text.
Assuming that the portable radiotelephone has been powered-up and the ~lip element has been opened to enable the HKS, a Xeypad 110 pushbutton activation by the portable radiotelepone user results in a communication between the slave microprocessor 402 and the master mlcroprocessor 502 via the bus 420. The slave microprocessor 402, in the preferred ambodiment, communicates that a closure ha~ occurred between a particular row and a particular column correspondlng to the key pressed by th~ user. The master microprocessor 502 may then take the appropriate action, such as rsturning a digit instruction via bus 420 for the slave microprocsssor 402 to cause the display 404 to illuminate or otherwise display. Thus, the slave micorprocessor 402 is commanded by the master microprocessor 502 or the user in order to complete an assignment.
When both the slava microprocessor 402 and the master microprocessor 502 operate together, the process shown in Fig. 6 is that which i9 followed to determine if the keypad keys and control switche~ should cause a response by the portabl~ radiotelephone. Since it is an important featura of the present invention to disable the user interface when ths flip element iB closed, this feature is incorporated into the process o~ Fig. 6.
Although the preferred embodiment has been i~plemented employing two micrprocessors, this should not be a ; limitation of the invention for it is possible to implement the present invention in a single microprocessor should the de~igner so desire. For either , ..
. . .
1~36~7~`
a single microprocessor or a multiple microprocessor system, the microprocessors may be interrupt driven in order to save battery power. The process of Fig. 6, therefore, commences with an interrupt due to a change of state of the hookswitch 306 or a key closure from keypad 05 110 to enable the microcomputer syste~ at 602. A
determination i9 made, at 604, whethex the flip element is open or clos~d. If the flip element is open, then the keypad 110 is read to determine which key has been closed at 606. If a key has been depressed at 608, then the function or charactex designated by the key is acted upon at 610. If a keypad 110 key has not been depressed, then no action is taken and the microcomputer system resumas its normal function3 of contro}ling th~
transcQiver, tha di~play, and other housekeeplng chores as shown at 612. If it i8 determined that th~ ~lip element is not open (at 604), then any ~eypad )cey depression i9 considered to be spurious and is ignored by progressing directly from the determination block at 604 to the normal housekeeping functions block at 612. The entire process is repeated for a predetermined period of time until a determination is made that the mlcroccmputer system should go into a low power consumption mode as deterined at 614. ~he microcomputer system is put into a "sleep" state at 616 and only the low power functions await for an interrupt signal at 618.
If the microcomputer system i9 implemented as a master and a slaYe microcomputer, then master microproc~ssor utilizes the process shown tn Fig. 7 (as part of its standard operating procedure) to prevent spuriou~ key depression~ from activating the portable transceiver. Since the slave microprocessor 402 can send either a flip element closed indication or a flip open indication, a detection of those indications is necessary by the master microcomputer. A test is made, at 702, of ~:~ 35 whether a flip element closed indication has been 67~
- lO - CE00046R
received from the ~lave microprocessor 402 on the bus 420. If a flip element closed indication is received, then the master microprocessor 502 sends a keypad disable command, at 704, to the slave microprocessor 402 on the 05 bus 420. The master microcomputer then returns to its programmed routine of chores. If a flip element closed indication is not received, at 702, 1:hen a test is made of whethar a flip element open lndiccltion has been received from the slave microprocessor 402, at 706. If such an indication has been received by the master microprocessor 502, then a command is sent to the slave microprocessor 402 on the bus 420 to enable the slave microprocessor 402 to again read any keypad button depressions and to send such information to the master microproces~or 502. Upon completion o~ the enable command, the master microproces~or 502 returns to its routine chore~.
The process followed by the slave microcomputer in realizing the present invention in the preferred embodiment is shown in Figs. 8A and 8B. The slave microprocessor 402 memorizes the state of the hookswitch 306 corresponding to whether the flip element is open or closed. The slave microprocessor 402 determinss, as part of its routine of chores, whether the hookswitch 306 ~as changed state by comparing th~ current state against the stored stats at 802 and 804. If the state is different, then a determination is made, at 806, whether the flip element i~ open or closed. If the flip element is determined to be open, then an oper. flip element command is transmitted to the master microprocessor at 808. If the determination at 806 yield~ a closed flip element, then a closed flip element command is conveyed to the master microprocessor at 810. In either case the master microprocessor 502 always maintains the flip element ; ~ 35 state in its associated storage. The slave miaroprocessor, as part of its routine of chores, checks ~' .
~29~77~
~ CE00046R
for a keypad enable or a keypad disable command received from the master microprocessor 502. This determination is made at decision blocks 812 and 814. A keypad enable command sets a ke~pad enable flag in microprocessor 402 05 memory at 816, while a keypad disable command clears the keypad enable flag at 818 before the process of Fig. 8 resumes its normal background flow. Further along the normal background process, the slave microprocessor 402 reads the keypad enable flag, at 820, and reads the row and column lines from the keypad in addition to the volume increase switch 108 and the volume decrease switch 109, at 822, to determine if any key or switch has been depressed ~such determination made at 824). If a key or switch has been depressed, then an identl~ication of the key or switch depres~ion i9 sent to the master microprocessor at 826. The process of Fig. 8 then returns to the normal slavQ microprocsssor background function~. Thus, if the flip element is determined to be open, then the keys of the keypad and the volume increase and d2crease switches are read in conventional fashion.
I~ the flip element i~ determined to be closed, then the keys o~ the keypad and the volume increase and decrease switches are ignored. Ther~ is, however, one further exception.
The on/off key i9 also covered and protected by the flip element. In the preferred embodiment, the on/off key is placed among the matrix of kevpad keys for aesthetic reasons. It i~ a desirable feature that once the power i~ turned on, the portable transceiver remain in a power-on mode and not be turned off due to a spurious on/off key depression when the flip element is closed. Likewise, when the portabls transc~iver is turned off, it is equally desirable that the portable transceiver remain in the power-off condition even though a spurious on/off key depression may occur when the flip element is closed. Two processes enable this operation.
.
2967~4 Depressions of the on/off key are ignored when the flip element is closed. Referring again to Fig~ 4, when a momentary depression of the on/off switch 408 occurs, a grsund is applied to the on/off line ancl to the power controller 510 of Fig. 5. The ground, applied through switch 408, is buffered by power controller 510 and applied to the master microprocessor 502 via line 512.
Upon receipt of this buffered on/off signal on line 512, the master microprocessor 502 follows the process flowcharted in Fig. 9. The master microprocessor 502 and the rest of the associated microcomputer system undergoes a reset operation at 902 and requests a system characterization (a definition of what peripherals exist on the bus) at 904. As part of the characterization process, the slave microprocessor 402 reports the state of the flip element. The current flip element state is then stored, at 905. The master microprocessor then determines if the flip element is open, at 906. If this determination is positive, then the master microcomputer proceeds with its normal wake-up and housekeeping routines. If the flip element is determined to be closed at 906, then a check is made to determine if an external supply has been connected to the portable radiotelephone (at 908). Such a circuitry sharing arrangement is further described in Canadian Patent Application No.
574,300, "Radio Arrangement. Having Two Radios Sharing Circuitry", filed on behalf of Michael P. Metroka on October 8, 1988. If an external supply is determined to exist at 908, then the master microprocessor 502 returns to its normal housekeeping routines. If an external supply is not connected, then a power turn off routine is followed at 910. (Power turn off is accomplished by the master microprocessor 5Q2 by storing its status and other essential parameters in memory before allowing the watchdog functions 506 of Fig. 5 to runout. A watchdog "
-1%~'7~
power function runout is communicated to the power controller 510 which subsequently tuxns off the porkable radiotelephone).
Once the master microcomputer has successfully 05 powered up, any on/off switch depressions are ignored so long as the flip element is closed (as shown in the process of Fig. 10). A determination of the signal sense on lina 512 of Fig. 5 is made by the master microprocessor 502 at 1002. I~ the sense is a signal high, then the master miaroproces~or continues with its background routines. If the sense is low, then the master microprocessor 502 reads the status o~ tha flip element storage (at 1014) and either proceeds with a turn o~ routine ~at 1016) i~ the flip element i8 open, or ignores a depre~sion o~ the on/or~ swikch as a spurious depression i~ the flip element i9 closed. Thus, a valid on/o~ command may be proce~ed only i~ the flip element is open.
In summary, then, a portable radiotelephone having the capability of ignoring spuriou~ control switch inputs ha~ been hown and de~cribed~ A flip element which covers a keypad and other control button~ when in a clo~ed position also activate~ a hookswitch. Wh~n the hookswitch and microprocessor indicate that the flip element iB in a closed position, the on/of~ switch cannot be activated to turn the portable radiotelephone on or off. Alqo, switches which control volume level ar~
deactivated when ths flip element is in the closed po3ition. While a particular embodiment of tha invention has been shown and described, it is to be understood that tha inventlon is not to be taken a9 limited to the specific embodiment herein, and that changes and modification~ may be made without departing from the true spirit o~ tha in~ention. It i~ conte~plated therefore to cover the present invention, and any and all such changes and modification , by ~he appended claims.
We claim:
.
Claims (19)
1. A portable radiotelephone apparatus having a keypad disposed on an outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the portable radiotelephone apparatus operating from a switchable power source and comprising:
means for producing an on-hook condition in the portable radiotelephone apparatus if the movable element is in the first position and for producing an off-hook condition in the portable radiotelephone if the movable element is in the second position; and means for preventing the switchable power source from being switched on or off if the portable radiotelephone apparatus is in said produced on-hook condition.
means for producing an on-hook condition in the portable radiotelephone apparatus if the movable element is in the first position and for producing an off-hook condition in the portable radiotelephone if the movable element is in the second position; and means for preventing the switchable power source from being switched on or off if the portable radiotelephone apparatus is in said produced on-hook condition.
2. A portable radiotelephone apparatus in accordance with claim 1 wherein the movable element further comprises a telephone microphone.
3. A portable radiotelephone apparatus in accordance with claim 1 wherein said means for producing an on-hook and an off-hook condition in the portable radiotelephone apparatus further comprises an electrical hookswitch coupled to a microprocessor.
4. A portable radiotelephone apparatus in accordance with claim 1 wherein said means for preventing further comprises means for enabling the switchable power source to be turned on if the portable radiotelephone apparatus is in said off-hook condition.
5. A portable radiotelephone apparatus in accordance with claim 4 wherein said means for enabling further comprises a microprocessor.
6. A portable radiotelephone apparatus in accordance with claim 4 wherein said means for enabling further comprising means for setting an off-hook memory element to indicate said off-hook condition after said switchable power source has been switched on.
7. A portable radiotelephone apparatus in accordance with claim 6 wherein said means for preventing further comprises means for comparing said off-hook memory element indication to an indication from said means for producing to determine if the portable radiotelephone apparatus is on-hook.
8. A portable radiotelephone apparatus in accordance with claim 1 wherein said means for preventing further comprises means for enabling the switchable power source to be switched off if the portable radiotelephone apparatus is in said produced off-hook condition.
9. A portable radiotelephone apparatus in accordance with claim 1 further comprising means for preventing the adjustment of the acoustic volume of an acoustic transducer when the portable radiotelephone apparatus is in said produced on-hook condition.
10. A portable radiotelephone apparatus having a keypad disposed on an outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the portable radiotelephone apparatus operating from a switchable power source and comprising:
means for producing an on-hook condition in the portable radiotelephone apparatus if the movable element is in the first position and for producing an off-hook condition in the portable radiotelephone if the movable element is in the second position; and means for preventing adjustment of the acoustic volume of an acoustic transducer if the portable radiotelephone apparatus is in said produced on-hook condition.
means for producing an on-hook condition in the portable radiotelephone apparatus if the movable element is in the first position and for producing an off-hook condition in the portable radiotelephone if the movable element is in the second position; and means for preventing adjustment of the acoustic volume of an acoustic transducer if the portable radiotelephone apparatus is in said produced on-hook condition.
11. A portable radiotelephone apparatus in accordance with claim 10 wherein the movable element further comprises a telephone microphone.
12. A portable radiotelephone apparatus in accordance with claim 10 wherein said means for producing an on hook and and off-hook condition in the portable radiotelephone apparatus further comprises an electrical hookswitch coupled to a microprocessor.
13. A portable radiotelephone apparatus in accordance with claim 10 wherein said means for preventing further comprises means for enabling the means for adjusting the acoustic volume of said acoustic transducer if the portable radiotelephone apparatus is in said produced off-hook condition.
14. A method of preventing spurious switch operation in a portable radiotelephone operating from a switchable power source and having a keypad disposed on the outer surface and a movable element covering the keypad when placed in a first position and exposing the keypad when placed in a second position, the method comprising the steps of:
producing an on-hook condition in the portable radiotelephone apparatus when the movable element is in the first position and producing an off-hook condition in the portable radiotelephone in when the movable element is in the second position; and preventing the switchable power source from being switched on or off when the portable radiotelephone is in said produced on-hook condition.
producing an on-hook condition in the portable radiotelephone apparatus when the movable element is in the first position and producing an off-hook condition in the portable radiotelephone in when the movable element is in the second position; and preventing the switchable power source from being switched on or off when the portable radiotelephone is in said produced on-hook condition.
15. A method in accordance with the method of claim 14 wherein said preventing step further comprises the step of enabling the switchable power source to be switched on when the portable radiotelephone apparatus is in said produced off-hook position.
16. A method in accordance with the method of claim 15 wherein said enabling step further comprises the step of setting an off-hook memory element to indicate said off-hook condition after said switchable power source has been switched on.
17. A method in accordance with the method of claim 16 wherein said preventing step further comprises the step of comparing said off-hook memory element indication to an indication from said means for producing to determine if the portable radiotelephone apparatus is in said on hook condition.
18. A method in accordance with the method of claim 14 wherein said preventing step further comprises the step of enabling the switchable power source to be switched off when the portable radiotelephone is in said off-hook condition.
19. A method in accordance with the method of claim 14 further comprising the step of preventing the adjustment of the acoustic volume of an acoustic transducer when the portable radiotelephone apparatus is in said on-hook condition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US206,072 | 1988-06-13 | ||
| US07/206,072 US4845772A (en) | 1988-06-13 | 1988-06-13 | Portable radiotelephone with control switch disabling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1296774C true CA1296774C (en) | 1992-03-03 |
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ID=22764859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000599012A Expired - Lifetime CA1296774C (en) | 1988-06-13 | 1989-05-08 | Portable radiotelephone with control switch disabling |
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| EP (1) | EP0346639B1 (en) |
| JP (1) | JPH0244843A (en) |
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| AU (1) | AU610416B2 (en) |
| BR (1) | BR8906967A (en) |
| CA (1) | CA1296774C (en) |
| DE (1) | DE68927024T2 (en) |
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| MX (1) | MX165350B (en) |
| SG (1) | SG86299A1 (en) |
| WO (1) | WO1989012945A1 (en) |
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1988
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1989
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- 1989-05-08 CA CA000599012A patent/CA1296774C/en not_active Expired - Lifetime
- 1989-05-11 IL IL90261A patent/IL90261A/en unknown
- 1989-05-18 WO PCT/US1989/002118 patent/WO1989012945A1/en active IP Right Grant
- 1989-05-18 KR KR1019900700259A patent/KR920009398B1/en not_active IP Right Cessation
- 1989-05-18 BR BR898906967A patent/BR8906967A/en not_active IP Right Cessation
- 1989-05-18 AU AU37411/89A patent/AU610416B2/en not_active Ceased
- 1989-05-19 SG SG9604709A patent/SG86299A1/en unknown
- 1989-05-19 AT AT89109012T patent/ATE142068T1/en not_active IP Right Cessation
- 1989-05-19 DE DE68927024T patent/DE68927024T2/en not_active Expired - Lifetime
- 1989-05-19 ES ES89109012T patent/ES2091189T3/en not_active Expired - Lifetime
- 1989-05-19 EP EP89109012A patent/EP0346639B1/en not_active Expired - Lifetime
- 1989-06-12 IE IE187189A patent/IE61916B1/en not_active IP Right Cessation
- 1989-06-13 JP JP1148546A patent/JPH0244843A/en active Granted
-
1990
- 1990-02-06 DK DK030190A patent/DK30190A/en not_active Application Discontinuation
- 1990-02-08 FI FI900621A patent/FI104031B1/en not_active IP Right Cessation
-
1998
- 1998-06-27 HK HK98107187A patent/HK1008132A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0544217B2 (en) | 1993-07-05 |
| MX165350B (en) | 1992-11-05 |
| FI104031B (en) | 1999-10-29 |
| DK30190A (en) | 1990-03-27 |
| US4845772A (en) | 1989-07-04 |
| WO1989012945A1 (en) | 1989-12-28 |
| EP0346639A2 (en) | 1989-12-20 |
| KR920009398B1 (en) | 1992-10-16 |
| EP0346639A3 (en) | 1991-05-29 |
| DE68927024D1 (en) | 1996-10-02 |
| BR8906967A (en) | 1990-12-11 |
| DE68927024T2 (en) | 1997-03-06 |
| JPH0244843A (en) | 1990-02-14 |
| ATE142068T1 (en) | 1996-09-15 |
| FI900621A0 (en) | 1990-02-08 |
| SG86299A1 (en) | 2002-02-19 |
| FI104031B1 (en) | 1999-10-29 |
| HK1008132A1 (en) | 1999-04-30 |
| ES2091189T3 (en) | 1996-11-01 |
| EP0346639B1 (en) | 1996-08-28 |
| DK30190D0 (en) | 1990-02-06 |
| IL90261A (en) | 1993-05-13 |
| IL90261A0 (en) | 1989-12-15 |
| AU3741189A (en) | 1990-01-12 |
| IE61916B1 (en) | 1994-11-30 |
| KR900702738A (en) | 1990-12-08 |
| IE891871L (en) | 1989-12-13 |
| AU610416B2 (en) | 1991-05-16 |
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