United States Patent (19)
`Gillig et al.
`
`11
`(45)
`
`Patent Number:
`Date of Patent:
`
`4,989,230
`Jan. 29, 1991
`
`54 CELLULAR CORDLESS TELEPHONE
`Steven F. Gillig, Roselle; Glen E.
`75) Inventors:
`Pederson, St. Charles, both of Ill.
`73) Assignee:
`Motorola, Inc., Schaumburg, Ill.
`21 Appl. No. 249,041
`22 Filed:
`Sep. 23, 1988
`51 Int. Cl........................... H04B 1/40; H04Q7/04
`52 U.S.C. ......................................... 379/59; 379/61
`58 Field of Search ...................... 455/89, 73; 379/63,
`379/58, 59, 61
`
`56
`
`References Cited
`U.S. PATENT DOCUMENTS
`3,955,140 5/1976 Stephens et al....................... 455/89
`4,481,382 1 1/1984 Villa-Real ............................. 379/6
`4,491,966 1/1985 Morcerf et al. ....................... 455/32
`4,627,107 12/1986 Hohlfeld et al. ...................... 455/11
`4,659,878 4/1987 Dinkins .............
`... 379/61 X
`4,677,655 6/1987 Hashimoto ............................ 379/6
`4,682,351 7/1987 Makino .
`... 379/62
`... 379/6
`4,700,375 10/1987 Reed .....
`... 379/6
`4,706,274 11/1987 Baker et al. ...
`... 379/61
`4,741,019 4/1988 Takahashi .....
`4,745,632 5/1988 Duffy ................
`... 379/58
`4,879,740 1 1/1989 Nagashima et al. .................. 379/61
`FOREIGN PATENT DOCUMENTS
`58-204640 11/1983 Japan ..................................... 379/61
`63-181534 7/1988 Japan .....................
`... 379/61
`WO89/04569 5/1989 PCT Int'l Appl. ...
`... 379/59
`2162404 1/1986 United Kingdom.................. 379/59
`OTHER PUBLICATIONS
`"Britain Offers Digital Cordless Phone Service', by
`
`Roger Woolnough, Electronic Engineering Times,
`Dec. 14, 1987, p. 25.
`"Cordlessphone Model No. KX-T3000 EASA
`PHONE", published by Panasonic Company Exhibit
`D.
`“DYNATAC Cellular Mobile Telephone" published
`by Motorola,
`Inc.
`Instruction Manual No.
`
`Primary Examiner-Keith E. George
`Attorney, Agent, or Firm-Rolland R. Hackbart
`(57)
`ABSTRACT
`A cellular cordless telephone (10) operates with both a
`cordless base station (180) and a cellular base station
`(190) and cellular control terminal (196). In one embodi
`ment (FIG. 2), a cellular cordless telephone (100) in
`cludes a cellular transceiver (120), antenna (128), key
`board (140), a display (180), handset (160), and mi
`crocomputer (130) together with a cordless transceiver
`(110) and antenna (118), all of which may be in a single
`housing. In another embodiment (FIG. 3), a cellular
`cordless telephone (200) includes a cellular telephone
`(220) and a cordless telephone transceiver (210) which
`may be a plugable module. Whenever cellular cordless
`telephone (10) is within range of cordless base station
`(180), telephone calls may be made over the cordless
`radio channel or transferred from the cellular radio
`channels to the cordless radio channel. If the cellular
`cordless telephone (10) thereafter moves out of range of
`the cordless base station (180), telephone calls may be
`made over the cellular radio channels or transferred
`from the cordless radio channel to one of the cellular
`telephone channels.
`20 Claims, 7 Drawing Sheets
`
`
`
`
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`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`192
`
`194
`
`CELLULAR
`BASE
`STATION
`
`CONTROL
`TERMINAL
`
`CELLULAR
`CORDLESS
`TELEPHONE
`
`188
`
`CORDLESS
`BASE
`STATION
`
`
`
`
`
`COMMUNITY
`CORDLESS
`BASE STATION
`
`
`
`Ex.1033 / IPR2022-01223 / Page 1 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`U.S. Patent
`
`Jan. 29, 1991
`
`Sheet 1 of 7
`
`4989,230
`
`
`
`
`
`CoSSESS
`
`STATION
`
`181
`
`192
`
`194
`
`CELLULAR
`BASE
`STATION
`
`190
`
`CELLULAR
`CORDLESS
`TELEPHONE
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`COMMUNITY
`CORDLESS
`BASE STATION
`
`Ex.1033 / IPR2022-01223 / Page 2 of 14
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`
`

`

`Jan. 29, 1991
`
`Sheet 2 of 7
`
`4,989,230
`
`U.S. Patent
`
`6 || ||
`
`991
`
`OOY X
`
`8 HOLMS y OIGñº
`ZW Z8.
`
`18 || W
`
`OOW X
`
`WN3 XL
`
`9
`
`3000 O3S X vy
`
`ENING X
`
`y
`
`19C |
`
`
`
`
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`
`
`
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`
`
`
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`
`
`Ex.1033 / IPR2022-01223 / Page 3 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`U.S. Patent
`
`Jan. 29, 1991
`
`Sheet 3 of 7
`
`4,989,230
`
`
`
`SSET0}JOO
`
`NEILLIWSNÝMI
`
`Ex.1033 / IPR2022-01223 / Page 4 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`Ex.1033 / IPR2022-01223 / Page 5 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`U.S. Patent
`
`Jan. 29, 1991
`500
`
`23.
`
`RECEMED
`
`Sheet 5 of 7
`
`4,989,230
`F.G. 6
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`fFEERG
`MATCH THE
`
`IS
`PREFERENCE
`FOR CORDLESS
`
`
`
`OF CORDLESS
`BASE
`?
`
`WILL
`CEULAR
`FORWARD TO
`
`un-NE
`
`
`
`WHN RANGE
`OF Cryuu
`
`
`
`
`
`
`
`
`
`
`
`GNORE CELULAR PAGE
`AND WAT FOR CALL TO
`BE RECEMED
`ON CORDLESS
`
`GNORE CORDLESS PAGE
`AND WAT FOR CATO
`BE RECEMED
`ON CEULAR
`
`Ex.1033 / IPR2022-01223 / Page 6 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`U.S. Patent
`
`Jan. 29, 1991
`
`Sheet 6 of 7
`
`4,989,230
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`ACTIVATE CCT
`
`SOO
`
`ONE CALL IN PROCESS
`ON CEULAR
`OR CORDLESS
`
`602
`
`CAL
`RECEMED
`ON OPPOSITE
`SYSTEM
`
`606
`
`NO
`CALL
`ORIGINATED
`ON OPPOSTE
`SYSYEM
`
`USER SELECTED
`DUAL-MODE
`fast
`
`ALERT USER OF
`ALTERNAE SYSTEM CALL
`
`
`
`
`
`
`
`DOES
`USER ACK
`SECOND CAL
`
`
`
`USER SELECTED
`5 WAY NKS
`
`ENABLES WAY UNKING
`CIRCUIT PROCESSING
`
`616
`
`
`
`
`
`PROCESS BOTH CAS
`SIMULANEOUS WITH
`SELECTION BETWEEN
`THEM MADE BY USER
`
`618
`
`Ex.1033 / IPR2022-01223 / Page 7 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`U.S. Patent
`
`Jan. 29, 1991
`
`Sheet 7 of 7
`
`4,989,230
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`PORTABLE
`WITHN RANGE
`OF CEULAR
`
`BSE
`
`716
`
`DOES
`1 USER WANT
`NO(1RANSFER OFCELULAR
`TO copies
`
`MANAN CELULAR
`CAL AS LONG AS
`POSSIBLE
`
`
`
`
`
`STLL WHEN
`RANGE OF CORDESS
`BASE
`
`2
`
`USER SELECTED
`TRANSFER OF CORDESS
`TO CEUS
`
`MANIAN CALL AS
`LONG AS POSSIBLE
`
`714
`TRANSFER CORDLESS
`CA TO CELULAR
`
`
`
`718
`
`TRANSFER CELLULAR
`CAL TO CORDLESS
`
`Ex.1033 / IPR2022-01223 / Page 8 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`CELLULAR CORDLESS TELEPHONE
`
`4,989,230
`2
`matically transfering between a cellular telephone call
`and a cordless telephone call.
`FIG. 9 is a detail circuit diagram for audio switch 150
`in FG, 2.
`
`30
`
`BACKGROUND OF THE INVENTION
`The present invention is generally related to cellular
`telephones and more particularly to an improved cellu
`lar cordless telephone for providing both cellular and
`cordless telephone services.
`In the prior art, cordless telephones typically are used
`in the home to allow the user to place and receive tele
`phone calls at any point throughout the house. Such
`cordless telephones are connected to the user's tele
`phone landline. However, due to their limited range,
`such cordless telephones are not suitable for use in vehi
`15
`cles. Vehicular communications are typically achieved
`by means of radio telephone systems, the most prevalent
`being cellular telephone systems. A cellular telephone
`allows the user to place and receive telephone calls at
`any point throughout a large metropolitan area. How
`20
`ever, the cost of a cellular telephone call is as much as
`seven times the cost of a cordless telephone call, since
`cordless telephone calls are made by way of the user's
`telephone landline and cost the same as landline tele
`phone calls, while cellular telephone calls are made by
`25
`way of expensive cellular base stations and cellular
`switching equipment and cost much more than landline
`telephone calls.
`OBJECTS OF THE INVENTION
`Accordingly, it is an object of the present invention
`to provide an improved cellular cordless telephone that
`may place both cellular telephone calls and cordless
`telephone calls.
`35
`It is another object of the present invention to pro
`vide an improved cellular cordless telephone that auto
`matically operates as a cordless telephone whenever it
`is in range of its corresponding cordless base station.
`BRIEF DESCRIPTION OF THE DRAWINGS
`FIG. 1 is a block diagram of a cellular cordless tele
`phone system embodying the present invention.
`FIG. 2 is a block diagram of a cellular cordless tele
`phone embodying the present invention.
`45
`FIG. 3 is a block diagram of another embodiment of
`a cellular cordless telephone according to the present
`invention.
`FIG. 4 is a flow chart for the process used by the
`cellular cordless telephones in FIGS. 2 and 3 for placing
`and receiving cellular and cordless telephone calls.
`FIG. 5 is a flow chart for the process used by the
`cellular cordless telephones in FIGS. 2 and 3 for origi
`nating a telephone call as a cellular telephone call or a
`cordless telephone call according to user selectable
`55
`preference.
`FIG. 6 is a flow chart for the process used by the
`cellular cordless telephones in FIGS. 2 and 3 for receiv
`ing a telephone call as a cellular telephone call or a
`cordless telephone call according to user selectable
`preference.
`FIG. 7 is a flow chart for the process used by the
`cellular cordless telephones in FIGS. 2 and 3 for simul
`taneously processing both a cellular telephone call and
`a cordless telephone call and three-way linking both
`65
`calls.
`FIG. 8 is a flow chart for the process used by the
`cellular cordless telephones in FIGS. 2 and 3 for auto
`
`50
`
`5
`
`O
`
`DESCRIPTION OF THE PREFERRED
`EMBODIMENT
`In FIG. 1, there is illustrated a block diagram of a
`cellular cordless telephone system embodying the pres
`ent invention. The system includes a telephone com
`pany phone system (TELCO) 184, connected by tele
`phone landlines to a cordless base station 180 having a
`landline telephone number located in a home or office
`181 and to a community cordless base station 188 hav
`ing a landline telephone number in another office, build
`ing, or other geographical location. Cordless base sta
`tions 180 and 188 communicate with the cellular cord
`less telephone (CCT) 10 through antennas 182 and 189.
`Antennas 182 and 189 may be implemented as telescop
`ing whip antennas. Cordless base stations 180 and 188
`may be any conventional cordless base station, such as,
`for example, the base station shown and described in
`Panasonic operating instructions, entitled "Cordless
`phone Model No. KX-T3000 EASA-PHONE', pub
`lished by and available from the Panasonic Company,
`One Panasonic Way, Secaucus, NJ, 07094. Additional
`community cordless base stations 188 may be located
`throughout a metropolitan area for providing shared
`telephone service to CCTs 10. In this case, cordless base
`station 188 may include additional equipment for billing
`calls to the cellular telephone number of CCT 10.
`Also connected through telephone landlines to the
`same or a different telephone company phone system
`(TELCO) 198 is the cellular control terminal 196 (see
`U.S. Pat. No. 4,268,722) with its associated cellular base
`station(s) 190 (see U.S. Pat. No. 4,485,486 incorporated
`herein by reference). Cellular base station 190 incorpo
`rates both a receive antenna 192 and a transmit antenna
`194 (see U.S. Pat. No. 4,369,520 incorporated herein by
`reference) for communicating with CCTs 10.
`CCT 10 may be a mobile unit installed in a vehicle, a
`transportable unit which is a mobile unit and battery
`installed in a carrying case, or a hand-held portable unit.
`CCT 10 includes an antenna 118 for the cordless radio
`channels and an antenna 128 for the cellular radio chan
`nels as illustrated by the embodiment of CCT 200 in
`FIG. 3, or may include a single antenna, is illustrated by
`the embodiment of CCT 100 in FIG. 2. In the U.S.A.,
`the cordless radio channels are in the frequency band
`from 46-49 mHz and the cellular radio channels are in
`the frequency band from 824–894 mHz.
`In FIG. 2, there is illustrated a detailed block diagram
`of a first embodiment of a CCT 100 according to the
`present invention. CCT 100 includes a cordless tele
`phone transceiver 110, antenna 118, cellular telephone
`transceiver 120, antenna 128, microcomputer 130, key
`pad 140, display 180, audio switch 150, and handset 160
`including speaker 162 and microphone 164. Alterna
`tively, as shown by dashed-lines in FIG. 2, cordless
`telephone transceiver 110 and cellular telephone trans
`ceiver 120 may be coupled to a single antenna 119 in
`place of antennas 118 and 128 by way of low-pass filter
`185 and high-pass filter 187, respectively. Cordless tele
`phone transceiver 110 may be any conventional cord
`less telephone transceiver, such as, for example the
`transceiver shown and described in the aforementioned
`Panasonic operating instructions, entitled "Cordless
`phone Model No. KX-T3000 EASA-PHONE'. Cellu
`
`Ex.1033 / IPR2022-01223 / Page 9 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`5
`
`O
`
`4,989,230
`4.
`3
`lar telephone transceiver 120, microcomputer 130, key
`phone transceiver 210 may be a plug-in accessory
`which couples via connectors 270 and 272 to cellular
`pad 140, and handset 160 likewise may be any commer
`telephone 220. When cordless telephone transceiver 210
`cially available cellular transceiver, such as, for exam
`is plugged into microcomputer 230 of cellular telephone
`ple, the transceiver shown and described in Motorola
`220, it operates in accordance with FIGS. 4-8. Cellular
`instruction manual number 68P81049E55, entitled
`“DYNATAC Cellular Mobile Telephone", published
`telephone 220 includes cellular transmitter 222, cellular
`receiver 224, microcomputer 230, keypad 240, display
`by and available from Motorola C & E Parts, 1313 East
`Algonquin Road, Schaumburg, IL 60196.
`280, audio circuitry 226, audio switch 250 and handset
`260 including speaker 262 and microphone 264. Cord
`Referring to FIG. 9, audio switch 150 may be imple
`mented with two-to-one multiplexing analog switches
`less telephone transceiver 210 may be any conventional
`cordless telephone transceiver, such as, for example the
`151-155 which select between audio signals of audio
`circuitry 116 in cordless transceiver 110 and audio cir
`transceiver shown and described in the aforementioned
`cuitry 126 in cellular transceiver 120 under control of
`Panasonic operating instructions, entitled “Cordless
`phone Model No. KX-T3000 EASA-PHONE". Cellu
`select signals SELECT1, SELECT2 and LINK from
`lar telephone 220 likewise may be any commercially
`microcomputer 130. Select signal SELECT2 enables
`switches 151 and 152 when it has a binary one state,
`available cellular transceiver, such as, for example, the
`select signal SELECT1 enables switches 153 and 154
`transceiver shown and described in the aforementioned
`when it has a binary one state, and select signal LINK
`Motorola instruction manual number 68P81049E55,
`enables switches 152, 154 and 155 when it has a binary
`entitled "DYNATAC Cellular Mobile Telephone'.
`Microcomputer 230 of cellular telephone 220 is cou
`one state. Depending on which is enabled, analog
`switches 151 and 153 couple speaker 162 to receive
`pled to the cordless telephone transceiver 210 via the
`audio from audio circuitry 116 and audio circuitry 126,
`same control signals used in FIG. 2. These control sig
`respectively. Similarly, depending on which is enabled,
`nals are TX/RX enable signals, signal quality signal,
`analog switches 152 and 154 couple microphone 164 to
`ring signal and TX/RX security code signals.
`transmit audio of audio circuitry 116 and audio circuitry
`Audio circuitry 226 of cellular telephone 220 is cou
`25
`126, respectively. If three-way linking is selected, ana
`pled to audio switch 250 which can be implemented
`log switches 152 and 154 couple microphone 164 to
`with two-to-one multiplexing analog switches (see FIG.
`transmit audio of both audio circuitry 116 and audio
`9) which select between audio signals from the cellular
`circuitry 126, and analog switch 155 couples speaker
`receiver 224 and transmitter 222 and cordless telephone
`162 to receive audio of both audio circuitry 116 and
`receiver 214 and transmitter 212.
`audio circuitry 126 by way of summing amplifier 159.
`Referring now to FIG. 4, there is illustrated a flow
`Referring to CCT 100 in FIG. 2, microcomputer 130
`chart for the process used by the CCTs 100 and 200 in
`is programmed in accordance with FIGS. 4-8 for oper
`FIGS. 2 and 3, respectively, for placing and receiving
`ating as a cellular telephone, a cordless telephone, or a
`cellular and cordless telephone calls. Entering at block
`cellular cordless telephone. That is, according to the
`302, the user activates the CCT. The microcomputer
`35
`present invention, CCT 100 may simultaneously oper
`130 and 230 monitors both the cellular and cordless
`systems for availability thereof and for incoming and
`ate as a cellular telephone and a cordless telephone.
`When operating as a cellular telephone, control signals
`outgoing calls. If the cellular system and/or cordiess
`system are available, a corresponding availability indi
`131 TX ENABLE and 132 RX ENABLE of mi
`crocomputer 130 enable cellular transmitter 124 and
`cator is enabled in display 180 and 280. In cellular sys
`40
`tems, the microcomputer scans pre-selected signalling
`cellular receiver 122, respectively. In addition to con
`trol signals 131 and 132 to cellular transceiver 120,
`channels to determine if cellular service is available.
`microcomputer 130 also monitors control signals 133
`Next, at decision block 304, a check is made to deter
`RSSI, 134 RX DATA and 135 TX DATA for detecting
`mine if a call has been received. If not, NO branch is
`signal strength, for detecting receive data and for send
`taken to decision block 316 to determine if a call has
`45
`ing transmit data, respectively, used in operation of
`been initiated by the user of the CCT. If not, NO branch
`cellular transceiver 120. When operating as a cordless
`is taken back to block 304 to continue monitoring both
`telephone, control signals 141 and 146 of microcom
`the cellular and cordless systems for telephone calls.
`Returning to decision block 304, if an incoming call
`puter 130 enable cordless receiver 112 and cordless
`transmitter 114, respectively. In addition to control
`has been received, YES branch is taken to decision
`50
`signals 141 and 146 to cordless transceiver 110, mi
`block 306 where a check is made to determine if the
`crocomputer 130 also monitors control signals 142 SIG
`incoming call is a cellular call. If so, YES branch is
`NAL QUALITY, 143 RING, 144 RX SECURITY
`taken to block 308 where a cellular call indicator is
`CODE and 145 TX SECURITY CODE for detecting
`activated or entered in display 180 and 280, and the
`signal strength, ringing, and the receive security code,
`incoming call is connected as a cellular call (e.g., in
`and for sending the transmit security code and dialed
`FIG. 2, cellular transceiver 120 is enabled by mi
`digits, respectively, used in operation of cordless trans
`crocomputer 130). If the incoming call is not a cellular
`ceiver 110. Dialed digits may also be encoded by key
`call, NO branch is taken from block 306 to block 320
`pad 140 as conventional multi-frequency, tones which
`where a cordless call indicator is activated or entered in
`are coupled to transmit audio of cordless transceiver
`display 180 and 280, and the incoming call is connected
`110 by audio switch 150 during cordless operation.
`as a cordless call (e.g., in FIG. 2, cordless transceiver
`110 is enabled by microcomputer 130).
`Referring next to FIG. 3, there is illustrated a block
`diagram of another embodiment of a cellular cordless
`Returning to decision block 316, if a call has been
`telephone (CCT) 200 according to the present inven
`initiated by the user of the CCT, YES branch is taken to
`tion. CCT 200 includes a cordless telephone transceiver
`decision block 318 where a check is made to determine
`65
`210 in a separate housing with antenna 218 and connec
`if the initiated call is a cellular call. If so, YES branch is
`tor 270, and a cellular telephone 220 in a separate hous
`taken to block 308 where the initiated call is connected
`ing with antenna 228 and connector 272. Cordless tele
`as a cellular call. If the initiated call is not a cellular cali,
`
`30
`
`15
`
`55
`
`Ex.1033 / IPR2022-01223 / Page 10 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`10
`
`15
`
`4,989,230
`6
`5
`number of CCT 10 to the landline telephone number of
`NO branch is taken from decision block 318 to block
`cordless base station 180) and can be determined by
`320 where the initiated call is connected as a cordless
`polling stored information in the memory associated
`call.
`with the CCT microcomputer. If not, NO branch is
`Referring now to FIG. 5, there is illustrated a flow
`taken to block 512 where the incoming call is connected
`chart for the process used by the CCTs 100 and 200 in
`FIGS. 2 and 3, respectively, for originating a telephone
`as a cellular call. If the cellular system will forward the
`unanswered incoming call, YES branch is taken from
`call as a cellular telephone call or a cordless telephone
`call according to user selectable preference.
`decision block 516 to block 518 where the cellular page
`from the cellular base station is ignored and thereafter
`Entering at block 400, the user activates the CCT.
`to decision block 502 to wait for the incoming call to be
`Next, at block 402, a check is made to determine if a call
`has been originated by the CCT. If not, NO branch is
`received as a cordless call.
`Returning to decision block 506, if the preference is
`taken to wait for a call to be originated. If a call has been
`for a cellular call, NO branch is taken to decision block
`originated, YES branch is taken from decision block
`520 to determine if the CCT is within range of the cellu
`402 to decision block 404, where a check is made to
`lar base stations (does it have cellular service). This is
`determine if the user's preference is for cordless phone
`typically determined by scanning and selecting the
`operation. If not, NO branch is taken to block 406 to
`strongest signalling channel from the surrounding cellu
`determine if a call can be placed on the cellular system.
`lar base stations. If not, NO branch is taken to block 510,
`If so, YES branch is taken to block 416 where the call
`where the incoming call is connected as a cordless call.
`origination is connected as a cellular call. If not, NO
`If the CCT is within range of the cellular base stations,
`branch is taken to decision block 408 to determine if a
`20
`call can be successfully placed on the cordless system.
`YES branch is taken from decision block 520 to decision
`Referring back to decision block 404, if preference is for
`block 522 to determine if the landline system will for
`ward the unanswered incoming call to the cellular sys
`cordless, YES branch is also taken to decision block
`tem. This type of service is generally referred to as "call
`408. If a cordless call can be successfully placed, YES
`forwarding" and can be determined by polling stored
`branch is taken from decision block 408 to decision
`25
`information in the memory associated with the CCT
`block 414 where the call is connected as a cordless call.
`microcomputer. If not, NO branch is taken to block 510
`If not, NO branch is taken to decision block 410 to
`where the incoming call is connected as a cordless call.
`determine if a call had been tried unsuccessfully on the
`If the landline telephone system will forward the unan
`cellular system. If so, YES branch is taken to block 402
`swered incoming call, YES branch is taken from deci
`to wait for a call origination. If not, NO branch is taken
`30
`sion block 522 to block 524 where the cordless page
`to decision block 406 to determine if the call can be
`from the cordless base station is ignored and thereafter
`placed on the cellular system.
`back to decision block 502 to wait for the incoming call
`Referring now to FIG. 6, there is illustrated a flow
`chart for the process used by the CCTs 100 and 200 in
`to be received as a cellular call.
`FIGS. 2 and 3, respectively, for receiving a telephone
`Referring now to FIG. 7, there is illustrated a flow
`35
`chart for the process used by the CCTs 100 and 200 in
`call as a cellular telephone call or a cordless telephone
`FIGS. 2 and 3, respectively, for simultaneously process.
`call according to user selectable preference.
`ing both a cellular telephone call and a cordless tele
`Entering at block 500, the user activates the CCT.
`phone call and, if desired, three-way linking both calls.
`Next, at decision block 502, a check is made to deter
`Entering at block 600, the user activates the CCT.
`mine if a call is being received by the CCT. If not, NO
`Next, at block 602, one call is assumed to be in process
`branch is taken back to decision block 502. If a call has
`on either the cellular system or cordless system. Pro
`been received, YES branch is taken from decision block
`ceeding from block 602 to decision block 604, a check is
`502 to decision block 504 to determine if the user's
`system preference matches the system of the incoming
`made to determine if a call has been received on the
`opposite system from the call in process. If so, YES
`call. If so, YES branch is taken to decision block 508 to
`45
`branch is taken to decision block 608 to determine if the
`determine if the call is on the cordless system. If so, the
`user has selected the dual-mode feature (e.g., by enter
`YES branch is taken to block 510 where the incoming
`ing a predetermined code from the keypad). If not, NO.
`call is connected as a cordless call. If not, the NO
`branch is taken back to decision block 604 and the cur
`branch is taken to block 512 where the incoming call is
`rent call remains in process. If the user has selected the
`connected as a cellular call.
`50
`Returning to decision block 504, if the user's system
`dual-mode feature, YES branch is taken from decision
`preference does not match the system of the incoming
`block 608 to block 610 which alerts the user of an in
`coming call on the alternate system. This type of service
`call, NO branch is taken to decision block 506 to deter
`is generally referred to as "call waiting". Next, at deci
`mine if the preference is for the cordless system. If so,
`sion block 612, a check is made to see if the user ac
`the YES branch is taken to decision block 514 to deter
`knowledges the second call. If not, NO branch is taken
`mine if the CCT is within range of the cordless base
`station (e.g., by sending the transmit security code and
`back to decision block 604 and the current call remains
`in process. If the user acknowledges the second call
`waiting for the receive security code from the cordless
`(e.g., by flashing the hookswitch), YES branch is taken
`base station). If not, the NO branch is taken to block 512
`from decision block 612 to decision block 614 to deter
`where the incoming call is connected as a cellular call.
`mine if the user has selected three-way linking (e.g., by
`If the cellular cordless telephone is within range of the
`entering a predetermined code from the keypad). If so,
`cordless base station, YES branch is taken from decision
`YES branch is taken to block 616 which enables three
`block 514 to decision block 516 to determine if the
`cellular system will forward the unanswered incoming
`way linking of the user and the two calls, each of which
`is on a different system. Three-way linking may be
`call to the landline of the cordless base station when the
`65
`accomplished by switchably coupling the combined
`cellular phone cannot be reached. This type of service is
`receive audio signals from summing amplifier 159 via
`generally referred to as "call forwarding' (a process
`analog gate 155 to the speaker, and enabling both trans
`which redirects a call from the dialed cellular telephone
`
`55
`
`Ex.1033 / IPR2022-01223 / Page 11 of 14
`Apple Inc. v. Smart Mobile Technologies LLC
`
`

`

`10
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`15
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`4,989,230
`7
`8
`are preferably originated on the cordless system, or if
`mit audio switches 152 and 154 in FIG. 9. If the user has
`not selected three-way linking, NO branch is taken from
`currently in process, are transferred to the cordless
`telephone system.
`decision block 614 to block 618 to process both calls
`simultaneously, one over each system, but selection
`We claim:
`-
`between them is made by the user so that only one party
`1. A cellular cordless telephone for making and re
`is in conversation with the user at a time. Selection
`ceiving cellular telephone calls on cellular radio chan
`between the calls may be made pressing a pre-selected
`nels of a cellular telephone system and cordless tele
`key or set of keys on the keypad.
`phone calls on at least one cordless radio channel of a
`Returning to decision block 604, if a call has not been
`base station coupled to a telephone landline having a
`received on the opposite system, NO branch is taken to
`landline telephone number, said cellular cordless tele
`decision block 606 to determine if a call has been origi
`phone comprising in combination as a single unit:
`nated on the opposite system. If not, NO branch is taken
`a cellular telephone including a first antenna, cellular
`back to decision block 604. If a call has been originated
`transceiver means having a cellular telephone num
`on the opposite system, YES branch is taken from deci
`ber and being coupled to said first antenna for
`sion block 606 to decision block 614 to determine if the
`communicating cellular telephone calls on cellular
`user wants three-way linking, as described hereinabove.
`radio channels, and control means coupled to said
`Referring now to FIG. 8, there is illustrated a flow
`cellular transceiver means for making and receiv
`chart for the process used by the CCTs 100 and 200 in
`ing cellular telephone calls; and
`FIGS. 2 and 3, respectively, for automatically transfer
`cordless transceiver means including a second an
`ing between a cellular telephone call and a cordless
`tenna for communicating cordless telephone calls
`telephone call.
`on the cordless radio channel, and said control
`Entering at block 700, the user activates the CCT.
`means further being coupled to said cordless trans
`Next at block 702, a call is assumed to be in process on
`ceiver means for making and receiving cordless
`one of the two systems. Proceeding from block 702 to
`telephone calls.
`decision block 704, a check is made to determine if the
`25
`2. The cellular cordless telephone according to claim
`call in process is on the cordless system. If so, YES
`1, further including first housing means for enclosing
`branch is taken to decision block 708 to determine if the
`said cellular telephone and second housing means for
`CCT is still within range of the cordless base stations
`enclosing said cordless transceiver means, said first
`(e.g., signal quality is good). If so, YES branch is taken
`housing means including first connector means coupled
`back to decision block 704. If the cellular cordless tele
`30
`to said control means, and said second housing includ
`phone is out of range of the cordless base stations, NO
`ing second connector means coupled to said cordless
`branch is taken from decision block 708 to decision
`transceiver means and adapted to be coupled to said
`block 710 to determine if the user has selected transfer
`first connector means.
`of the cordless call to the cellular system (e.g., by enter
`3. The cellular cordless telephone according to claim
`ing a predetermined code from the keypad). If so, YES
`35
`1, further including display means for providing a first
`branch is taken to block 714 where an attempt is made
`visual indication of a cellular telephone call and a sec
`to transfer the cordless call to the cellular system. As
`ond visual indication of a cordless telephone call.
`suming the called party has "call waiting', the transfer
`4. The cellular cordless telephone according to claim
`is attempted by placing another call on the cellular
`1, further including display means for providing a first
`system and waiting for the called party to answer.
`visual indication of the availability of one of the cellular
`Thereafter, the path returns to decision block 704. If the
`radio channels and a second visual indication of the
`user has not selected call transfer, NO branch is taken
`availability of the cordless radio channel.
`from decision block 710 to block 712 where the cordless
`5. A cellular cordless telephone for making and re
`call is maintained as long as possible.
`ceiving cellular telephone calls on cellular radio chan
`Returning to decision block 704, if the call is not on
`45
`nels of a cellular telephone system and cordless tele
`the cordless system, NO branch is taken to decision
`phone calls on at least one cordless radio channel of a
`bl