CA2032163C - Cellular telephone with standard telephone set - Google Patents
Cellular telephone with standard telephone setInfo
- Publication number
- CA2032163C CA2032163C CA002032163A CA2032163A CA2032163C CA 2032163 C CA2032163 C CA 2032163C CA 002032163 A CA002032163 A CA 002032163A CA 2032163 A CA2032163 A CA 2032163A CA 2032163 C CA2032163 C CA 2032163C
- Authority
- CA
- Canada
- Prior art keywords
- cellular
- telephone
- cellular telephone
- microcomputer
- coupled
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/021—Terminal devices adapted for Wireless Local Loop operation
-
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
- H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
- H04M1/2745—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips
- H04M1/27463—Predictive input, predictive dialling by comparing the dialled sequence with the content of a telephone directory
Abstract
A unique cellular telephone (100) connects to a standard telephone set (101) for providing cellular telephone services to subscribers in remote locations not served by a landline telephone system. Cellular telephone (100) includes a cellular telephone transceiver (109), microcomputer (108) and circuitry (102-106) for interfacing the cellular telephone transceiver (109) to the telephone set (101). The interface circuitry (102-107) provides the audio, voltage and dial signal interface to the telephone set (101). The microcomputer (108) controls the interface circuitry (102-106) and is responsive to the telephone set (101) for answering and placing cellular telephone calls.
Description
WO 90/14729 ;7 ~ . & r- PCI/US90/017~7 CEI I ULAR TELE.PHONE
WITH STANDARD TELEPHONE SET
thQ~ ln~D~tiQn The present invention is generally related to radiotelephones, and more particularly to a cellular telephone with a standard telephone set.
C:ellular telephones currently are operated with a' special purp,ose handset that is ooupled via audio and data buses to a cellular telephone transceiver. In order to avoid use of a cellular radio channel during dialing and minimize costs of cellular telephone calls, cellular telephone users are required to dial a telephone number and then press a "SEND" button (pre-origination dialing), in order to place a cellular telephone call. Pressing the ~SFND~ button causes the cellular telephone handse$ to generate a "SEND" signal and append it to the dialed digits transrnittad to the cellular tel0phone transceiver.
When a conventional pUI5e or tone dial telephone set or equivalent machine, such as a modem, is used in association with a callular telephene, there is a need for eith~r a "SEND" button or circuitry that simulates the ~SEND" function. A "SEND~ button can be added to a conventional telephone se~ by using a # or ~ button or hookswiteh flash, both requiring additional circuitry and/or software in an intarface dcvice.
A ~SEND~ button can also be simulated by d~tecting the end of dialing and automatically generating the "SEND"
signal in the sarne manner as is done by the cellular telephone h~ndset. 13etecting the end of dialing and automaticaily generate the ~SEND" signal is described in US
WO 90/14729 ~ ,' P~/US90/01797 Patent Nos. 4,658,096, 4,737,975 and 4,775,997. According to these pat~nts, an interfac~ davice det~cts the end of dialing and automatically appends a "SEND" signal to the dialed digits sent`to the cellular telephone transceiv~r.
5 However, in order to detect the end of dialing, such interface device requires additional circuitry to determine how many digits the dialed telephone has and then count the number of dialed digits actually recaived. Thus, adding a "SEND" button or circuitry that simulates the USEND"
10 function as in the prior art described above r~quires additional circuitry and increases the cost and complexity of the cellular telephone. For the foregoing reasons, there is a need for a cellular telephone which does not require generation of the "SEND" signal Accordingly, it is an object of the prssent invention to provide a unique cellular telephona for use with a 20 ~tandard tal~phone set or equivalent device, which automatically places and receives cellular telephon~ calls.
It is another obj~c~ of the present invention to provide a unique cellular telephone which processes digits of a telephone number dial~d in any pattern on a standard 25 telsphone set or squivalsnt devic~.
Figure 1 is a block diagram of a cellular telephone 30 100 embodying the present invention, into which a standard telephone instrument 101 may be plugged.
Figure 2 is a flow ohart for the process used by microcomput~r 108 in Figure 1 for processing dialed digits of a t~lephone numbor.
W~ 90/14729 ~ PC~/US90/017~7 Figure 3 is a flow chart for the proc0ss usad by microcornputer 108 in Figure 1 for processing incoming telephone calls.
Figure 4 is a flow chart for the process used by 5 microcomputer 129 in cellular talephone transc~iver 109 in Figure 1 for recaiving dialed digits of a telsphone number and placing a telephone call to the dialed telephone number.
Referring to Figure 1, thsre is illustrated a block diagram ef a cellular telephone 100 smbodying the present invention, into which a standard telephone set 101 may be plugged. Cellular telephone 100 may be advantageously 15 utilized in remote locations ~or providing cellular telephone services to subscribers who can not obtain convantional landline telephone service. Telephone set 101 may be a conventional telephone instrument or equivalent device having either a pulse or tone dial. For examplc, 20 tclephone set 101 may be a desk set. wall s~t, modem, or a separate dial, rin~er and handsst of the type found in a phona booth. Telephone se~ 101 requir~s approximately twenty milliamps of operating current provided by cellular telephone 100 via two wires 112 typically refarred to as 25 ~tip~ and ring" wires. Telephone set 101 also typically includes a modular RJ11C plug 113 which couple to eorresponding modular RJ11 C receptacl~ 114 in cellular telephone 1 00.
Ceilular telephone 100 includes a cellular telephone 30 transceiver 109 with a radio transceiver 119 and microcomputer 129 with memory therein for controlling the operation thereof. Cellular telaphon~ transceiver 1û9 may ba any conventional cellular telephona transceiver having a radio transmitter, radio reeaiv~r and logic unit, WO 90/14729 PCI'~US90/01797 such as, for axample, the transceiver shown and described in Motorola instruction manual number 68P81 066E40, entitled "DYNATAC Csllular Mobile T~l~phone 800 MHZ
Transceiver," published by and availabl~ from Motorola C &
5 E Parts, 1313 East Algonquin Read, Sehaumburg, Illinois 601 96.
Cellular telephone 100 also includes blocks 102-106 for interfacing cellular telephone transceiver 109 to telephone set 101. Blocks 102-107 provide the audio, 10 voltage and dial signal interface circuitry to telephone set 101 and may be conventional circuits of the type shown and described in Motorola instruction manual number 68P81071E30, entitled "THE CELLULAR CONNECTION Cellular Mobile Telephone intslligent RJ11C Intsrface,~ published by 15 and available from Motorola C & E Parts, 1313 East Algonquin Road, Schaumburg, Illinois 60196.
Voltage generator 107 gen0rates a 48V DC voltage which is coupled to wires 112 for supplying approximately twenty milliamps of current to operats telephone set 101.
20 P~ing voltage gensrator 108 produces a ringing sigrial having a high voltage at a rate comrnonly used in talephone systems and being coupled via volta~e generator 107 to telephone s~t 101. Ths rate of the ringing signal produced by ring voltage gensrator 106 is controlled by 25 microcomputer 108 via control signal 118.
Audio circuit 102 is an electronic bridge circuitry which converts the two-wire balanc~d audio from telephone set 101 to four-wire unbalanced audio iØ, transmit and receive audio needed in a duplex telephone system. The 30 four-wire unbalanced audio from audiu circuit 102 is coupied to the radio receiver and radio transmitter of radio transceiver 119. The transmit audio from audio circuit 102 is also coupied to DTMF detector 104.
WO90~14729 ~ 2 1 ~3 ~ PCr/USso/0~7s7 Hookswitch detector 103 detects the transition of telephone set 101 from "on hook~ to ~off hook~ or vice versa and produces a hookswitch signal 117 having a binary zero state when telephone set 101 is on hook and a binary one stat~ when t~l~phone s~t 101 is off hook. During pulse dialing, the hookswitch signal 1 17 from d~tector 103 transitions from tha binary on~ stats to the binary zero state for each dial pulse. Hookswitch signal 117 from detector 103 is coupled to microcomputer 108 and dial tone 10 generator 105. Microcomputer 108 monitors the hookswitch signal 117 from detector 103 to determins wh~n tslephone set 1û1 is eff or on hook and to detect the digits of a pulse dialed telephone number.
Dial tone ganerator 105 is responsive to control 15 signal 115 from microcomputsr 108 and the hookswitch signal 117 from detector 103 for generatin~ dial tone when telephone set 101 comes off hook. Dial tone is generated when the hookswitch signal 117 from detector 103 and control signal 115 from microcomputer 108 change to a 20 binary one state. Upon detection of dialing, control signal 115 from microcomputer 108 changes from a binary one state'to a binary zero state to shut off dial tono generator 105. In other embodim~nts, dial tone may ~be internally generated in micracomputer 108 and coupled to audio 25 circuit 102 for application ~o telephone set 101.
DTMF detector 104 is coupled to the transmit audio from audio circuit 102 for det~cting ton~ dialed digits of a dialed telephonc number. Detector 104 may be a oommerciaily available detector which translates dual-30 tona multi-frequency (DtMF) tones into a four-bit binary equivalent which is coupl~d to microcomputer 108 for ~
processing. To select behNeen tone or pulse dialed digits, an input signal to microcomput2r 108 may be coupled to a binary zero or binary one by a jumper wire or a user-WO 90/147:2g PCI`/US90/01797 programmable switch depending on the type of telephone set 101 coupled to cellular telephone 100.
Microcomputer 108 with mernory therein controls blocks 105 and 106 and is responsive to hookswitch signal 117 and digits dialed from telephone set 101 for answering and placing collular t~lephone calls. On r~c~ipt of an incoming call, microcomputer 108 enables ring vol~age generator 106 for ringiny telephon~ set 101. If a call is initiated by telephone set 101 coming off hook, 10 microcomputer 108 decodes the following pulse or tone dialed digits and, according to the present invention, forwards each digit on a real time basis to the microcomputer 129 of cellular telephone transcaiver 109.
Each dialed digit is stored by microcomputer 129. When 15 microcomputer 129 detects the absence of dialed digits for a predetermined tim~, a cellular telephone phone call is automatically placed. Thus, by utilizin~ the present invention, th~re is no need to det~ct a specific number of digits (e.g. ssven digits in local numbers and ten digits in 20 long distancs numbers) and no need to generata a "SEND~
signal as was done in the prior art. As a result, cellular telephone 100 accommodates any dialing pattern regardless of the number of digits of the telephone number.
In the preferred embodiment, microcomputer 108 is 25 coupled to microcomputer 129 of cellular telephone transceiver 109 by way of a thr~e-wire data bus 111, which is illustra~ed and described in US Patent No.
4,369,516. Microcomputer 108 is essentiaily continuously looking for dialed digits and forwarding aach digit on a real 30 time basis to microcomputer 129. Each digit detected by microcomputer 108 is coded into a message and transmitted via bus 111 to microcomputer 129.
Microcomputer 129 receives each dialed digit from bus 111 and stores the received digits in a pre-selected location of WO 90/1477:9 ~ ' PCI'/US90/01797 i; memory. If another di~it is not received in a predetermined time (fiv~ seconds in the preferred embodiment), the digits stored in the pre-selected memory location of microcomputer 129 ar~ transmitted via the cellular radio channels by the rablio transmitter of radio transceiver 119 for initiating a c~311ular telephone call.
Refarring next to Figure 2, there is illustrated a flow chart for the process used by microcomputer 108 in Figure 1 for processing dialed digits of a telephone number.
10 Entering at START block 202, the process proceeds to decision block 204, where a check of the hookswitch signal 117 is mad~ to datermine if telsphone set 101 is off hook.
If not, NO branch is taken to wait. If telephone set 101 is off hook, YES branch is taken from decision block 204 to 15 block 206, where microcomputer 108 generates a binary one state of control signal 115 to generate dial tone. ~lock 206 may also be reached via branch A if an invalid tclephone number has been dialed, as explained hereinbelow with respect to Figure 4. Next, at block 203, a chack is 20 made to determine if a digit has been dial~. If not, NO
branch is taken to wait. If a digit has beon dialed, YES
branch is taken from decision block 208 to block 210 where a binar zero state of control signal 115 is genorated and the dialed digit is coded into a messago and sent via bus 25 111 to microcomplJter 129. Next, at decision block 212, a check of the hookswitch signal 117 is made to determine if telephone set 101 is still off hook. If so, YES branch is taken back to decision block 208 to repeat the foregoing process. If telephohe set 101 is not off hook, NO branch is 30 taken from decisiorl block 212 to block 214 to return to other tasks.
Referring next to Figure 3, there is illustrated a flow chart for the process used by microcomputer 108 in Figure 1 for processing incoming telephone calls. Entering at WO 90/14729 PCr/US9OtO1797 ~ ~ ~3 ~ l 9~
START block 302, the process proce~ds to decision block 304, where a check is made to determin~ if an inccming call has been received. If not, NC) branch is taken to wait.
If an incoming call has been received, YES branch is taken 5 from decision block 304 to block 306, where microcomputer 1û8 gansratcs a binary one state of control signal 116 to generate the ringin~ signal. Next, at d~cision block 308, a check of the hookswitch signal 117 is made to determinc if telephone set 101 is off hook. If not, NO
10 branch is taken to wait. If telephone set 101 is off hook, YES branch is taken from decision block 308 to block 310 to generate a binary zero state of control signal 116, connect the call and thereafter return to other tasks at block 312.
Refsrring nsxt to Figure 4, there is illustrated a flow 15 chart for the process used by microcomput~r 129 in cellular telephone transceiver 109 in Figure 1 for receiving dialed digits of a telephone number and placing a cellular telephone call to the dialed telephone number. Entcring at START block 402, the process proceeds to decision block 20 404, where a check is made to determine if a dialed digit has been rsceived in a messags via bus 111 from microcomputcr 108. If not, NO branch is taken to wait. If a dialed digit has been received, YES branch is taken from decision block 404 to block 40~, where a five-second timer 2~ is reset and started. In the preferred embodiment, a five second timer implemented by interrupt based soft Nare is used to measure time elapsed since the last dialed digit was received. In other embodiments, such timer may be impl~mented by separate timing circuitry and may have a 3û vaiue which depends on operating charactsristics of telephone set 101. Next, at block 408, the received digit is stored in a pre-selected location of the memory of microcomput~r t29. Then, at d~cision bleck 410, a check is mad~ to de$armine if another dialed digit has been received.
W O 90/14729 ~! 3 ~ P~r/US90/01797 g If so, YES branch is taken from deoision block 410 back to biock 406 to repeat the foregoing process. If another dialF~d digit has not been received, NC) branch is taken from decision block 410 to decision block 412, where a check is 5 made to determine if the five-second timer has timsd out.
If not, NO branch is taken back to decision block 410 to check for receipt of ~he next dialeti digit, if any. If the five-second timer has timed out, YES braneh is takon from decision block 412 to decision block 418, wher~ the dialed 10 digits are checked to determine if a valid telephone number has been dialed. For example, the dialed digits are checked to determine if seven digits ar~ pr~sent for local numbers, ten digits ar~ present for long distance numbers preceded by a one or zerot thrae digits are present for 411 15 information, 611 telephone repair and 911 emergency, and other digit sequences depending on the country and telephone system in which cellular telephone is being used.
If the dialed digits are not valid, NO branch is taken from decision block 418 to branch A to rsturn to the flow chart 20 of Figure 2 and generato dial tone again. Thus, according to a feature cf the present invention, dial tone is returned to the user of eellular telephone if an invalid telephone number is dialed. If th~ dialed digits ar~ valid, YES branch is taken from decision block 418 to block 414 where a 25 cellular telephone call is plaoed to the number comprised of the digits stored in the pre-selected memory location of microcomputer 129, and thereafter return to other tasks at block 41 6.
In summary, a unique csllular telephone automatically 30 places and receives cellular talephone calls dialed in any pa~srn on a standard pulse or ton~ dial telephone set or equivalent d~vice. The dialed digits of a telephone number are processed by the unique c011ular telephone of the present invention on a real-time basis resulting in WO gO/14729 PCI/US90/01797 ~ ~ 3 ,~
- 1 o -automatic placement of a cellular telephone call without using a "SEND" button or circuitry that simulates the "SEND"
function as in the prior art.
WITH STANDARD TELEPHONE SET
thQ~ ln~D~tiQn The present invention is generally related to radiotelephones, and more particularly to a cellular telephone with a standard telephone set.
C:ellular telephones currently are operated with a' special purp,ose handset that is ooupled via audio and data buses to a cellular telephone transceiver. In order to avoid use of a cellular radio channel during dialing and minimize costs of cellular telephone calls, cellular telephone users are required to dial a telephone number and then press a "SEND" button (pre-origination dialing), in order to place a cellular telephone call. Pressing the ~SFND~ button causes the cellular telephone handse$ to generate a "SEND" signal and append it to the dialed digits transrnittad to the cellular tel0phone transceiver.
When a conventional pUI5e or tone dial telephone set or equivalent machine, such as a modem, is used in association with a callular telephene, there is a need for eith~r a "SEND" button or circuitry that simulates the ~SEND" function. A "SEND~ button can be added to a conventional telephone se~ by using a # or ~ button or hookswiteh flash, both requiring additional circuitry and/or software in an intarface dcvice.
A ~SEND~ button can also be simulated by d~tecting the end of dialing and automatically generating the "SEND"
signal in the sarne manner as is done by the cellular telephone h~ndset. 13etecting the end of dialing and automaticaily generate the ~SEND" signal is described in US
WO 90/14729 ~ ,' P~/US90/01797 Patent Nos. 4,658,096, 4,737,975 and 4,775,997. According to these pat~nts, an interfac~ davice det~cts the end of dialing and automatically appends a "SEND" signal to the dialed digits sent`to the cellular telephone transceiv~r.
5 However, in order to detect the end of dialing, such interface device requires additional circuitry to determine how many digits the dialed telephone has and then count the number of dialed digits actually recaived. Thus, adding a "SEND" button or circuitry that simulates the USEND"
10 function as in the prior art described above r~quires additional circuitry and increases the cost and complexity of the cellular telephone. For the foregoing reasons, there is a need for a cellular telephone which does not require generation of the "SEND" signal Accordingly, it is an object of the prssent invention to provide a unique cellular telephona for use with a 20 ~tandard tal~phone set or equivalent device, which automatically places and receives cellular telephon~ calls.
It is another obj~c~ of the present invention to provide a unique cellular telephone which processes digits of a telephone number dial~d in any pattern on a standard 25 telsphone set or squivalsnt devic~.
Figure 1 is a block diagram of a cellular telephone 30 100 embodying the present invention, into which a standard telephone instrument 101 may be plugged.
Figure 2 is a flow ohart for the process used by microcomput~r 108 in Figure 1 for processing dialed digits of a t~lephone numbor.
W~ 90/14729 ~ PC~/US90/017~7 Figure 3 is a flow chart for the proc0ss usad by microcornputer 108 in Figure 1 for processing incoming telephone calls.
Figure 4 is a flow chart for the process used by 5 microcomputer 129 in cellular talephone transc~iver 109 in Figure 1 for recaiving dialed digits of a telsphone number and placing a telephone call to the dialed telephone number.
Referring to Figure 1, thsre is illustrated a block diagram ef a cellular telephone 100 smbodying the present invention, into which a standard telephone set 101 may be plugged. Cellular telephone 100 may be advantageously 15 utilized in remote locations ~or providing cellular telephone services to subscribers who can not obtain convantional landline telephone service. Telephone set 101 may be a conventional telephone instrument or equivalent device having either a pulse or tone dial. For examplc, 20 tclephone set 101 may be a desk set. wall s~t, modem, or a separate dial, rin~er and handsst of the type found in a phona booth. Telephone se~ 101 requir~s approximately twenty milliamps of operating current provided by cellular telephone 100 via two wires 112 typically refarred to as 25 ~tip~ and ring" wires. Telephone set 101 also typically includes a modular RJ11C plug 113 which couple to eorresponding modular RJ11 C receptacl~ 114 in cellular telephone 1 00.
Ceilular telephone 100 includes a cellular telephone 30 transceiver 109 with a radio transceiver 119 and microcomputer 129 with memory therein for controlling the operation thereof. Cellular telaphon~ transceiver 1û9 may ba any conventional cellular telephona transceiver having a radio transmitter, radio reeaiv~r and logic unit, WO 90/14729 PCI'~US90/01797 such as, for axample, the transceiver shown and described in Motorola instruction manual number 68P81 066E40, entitled "DYNATAC Csllular Mobile T~l~phone 800 MHZ
Transceiver," published by and availabl~ from Motorola C &
5 E Parts, 1313 East Algonquin Read, Sehaumburg, Illinois 601 96.
Cellular telephone 100 also includes blocks 102-106 for interfacing cellular telephone transceiver 109 to telephone set 101. Blocks 102-107 provide the audio, 10 voltage and dial signal interface circuitry to telephone set 101 and may be conventional circuits of the type shown and described in Motorola instruction manual number 68P81071E30, entitled "THE CELLULAR CONNECTION Cellular Mobile Telephone intslligent RJ11C Intsrface,~ published by 15 and available from Motorola C & E Parts, 1313 East Algonquin Road, Schaumburg, Illinois 60196.
Voltage generator 107 gen0rates a 48V DC voltage which is coupled to wires 112 for supplying approximately twenty milliamps of current to operats telephone set 101.
20 P~ing voltage gensrator 108 produces a ringing sigrial having a high voltage at a rate comrnonly used in talephone systems and being coupled via volta~e generator 107 to telephone s~t 101. Ths rate of the ringing signal produced by ring voltage gensrator 106 is controlled by 25 microcomputer 108 via control signal 118.
Audio circuit 102 is an electronic bridge circuitry which converts the two-wire balanc~d audio from telephone set 101 to four-wire unbalanced audio iØ, transmit and receive audio needed in a duplex telephone system. The 30 four-wire unbalanced audio from audiu circuit 102 is coupied to the radio receiver and radio transmitter of radio transceiver 119. The transmit audio from audio circuit 102 is also coupied to DTMF detector 104.
WO90~14729 ~ 2 1 ~3 ~ PCr/USso/0~7s7 Hookswitch detector 103 detects the transition of telephone set 101 from "on hook~ to ~off hook~ or vice versa and produces a hookswitch signal 117 having a binary zero state when telephone set 101 is on hook and a binary one stat~ when t~l~phone s~t 101 is off hook. During pulse dialing, the hookswitch signal 1 17 from d~tector 103 transitions from tha binary on~ stats to the binary zero state for each dial pulse. Hookswitch signal 117 from detector 103 is coupled to microcomputer 108 and dial tone 10 generator 105. Microcomputer 108 monitors the hookswitch signal 117 from detector 103 to determins wh~n tslephone set 1û1 is eff or on hook and to detect the digits of a pulse dialed telephone number.
Dial tone ganerator 105 is responsive to control 15 signal 115 from microcomputsr 108 and the hookswitch signal 117 from detector 103 for generatin~ dial tone when telephone set 101 comes off hook. Dial tone is generated when the hookswitch signal 117 from detector 103 and control signal 115 from microcomputer 108 change to a 20 binary one state. Upon detection of dialing, control signal 115 from microcomputer 108 changes from a binary one state'to a binary zero state to shut off dial tono generator 105. In other embodim~nts, dial tone may ~be internally generated in micracomputer 108 and coupled to audio 25 circuit 102 for application ~o telephone set 101.
DTMF detector 104 is coupled to the transmit audio from audio circuit 102 for det~cting ton~ dialed digits of a dialed telephonc number. Detector 104 may be a oommerciaily available detector which translates dual-30 tona multi-frequency (DtMF) tones into a four-bit binary equivalent which is coupl~d to microcomputer 108 for ~
processing. To select behNeen tone or pulse dialed digits, an input signal to microcomput2r 108 may be coupled to a binary zero or binary one by a jumper wire or a user-WO 90/147:2g PCI`/US90/01797 programmable switch depending on the type of telephone set 101 coupled to cellular telephone 100.
Microcomputer 108 with mernory therein controls blocks 105 and 106 and is responsive to hookswitch signal 117 and digits dialed from telephone set 101 for answering and placing collular t~lephone calls. On r~c~ipt of an incoming call, microcomputer 108 enables ring vol~age generator 106 for ringiny telephon~ set 101. If a call is initiated by telephone set 101 coming off hook, 10 microcomputer 108 decodes the following pulse or tone dialed digits and, according to the present invention, forwards each digit on a real time basis to the microcomputer 129 of cellular telephone transcaiver 109.
Each dialed digit is stored by microcomputer 129. When 15 microcomputer 129 detects the absence of dialed digits for a predetermined tim~, a cellular telephone phone call is automatically placed. Thus, by utilizin~ the present invention, th~re is no need to det~ct a specific number of digits (e.g. ssven digits in local numbers and ten digits in 20 long distancs numbers) and no need to generata a "SEND~
signal as was done in the prior art. As a result, cellular telephone 100 accommodates any dialing pattern regardless of the number of digits of the telephone number.
In the preferred embodiment, microcomputer 108 is 25 coupled to microcomputer 129 of cellular telephone transceiver 109 by way of a thr~e-wire data bus 111, which is illustra~ed and described in US Patent No.
4,369,516. Microcomputer 108 is essentiaily continuously looking for dialed digits and forwarding aach digit on a real 30 time basis to microcomputer 129. Each digit detected by microcomputer 108 is coded into a message and transmitted via bus 111 to microcomputer 129.
Microcomputer 129 receives each dialed digit from bus 111 and stores the received digits in a pre-selected location of WO 90/1477:9 ~ ' PCI'/US90/01797 i; memory. If another di~it is not received in a predetermined time (fiv~ seconds in the preferred embodiment), the digits stored in the pre-selected memory location of microcomputer 129 ar~ transmitted via the cellular radio channels by the rablio transmitter of radio transceiver 119 for initiating a c~311ular telephone call.
Refarring next to Figure 2, there is illustrated a flow chart for the process used by microcomputer 108 in Figure 1 for processing dialed digits of a telephone number.
10 Entering at START block 202, the process proceeds to decision block 204, where a check of the hookswitch signal 117 is mad~ to datermine if telsphone set 101 is off hook.
If not, NO branch is taken to wait. If telephone set 101 is off hook, YES branch is taken from decision block 204 to 15 block 206, where microcomputer 108 generates a binary one state of control signal 115 to generate dial tone. ~lock 206 may also be reached via branch A if an invalid tclephone number has been dialed, as explained hereinbelow with respect to Figure 4. Next, at block 203, a chack is 20 made to determine if a digit has been dial~. If not, NO
branch is taken to wait. If a digit has beon dialed, YES
branch is taken from decision block 208 to block 210 where a binar zero state of control signal 115 is genorated and the dialed digit is coded into a messago and sent via bus 25 111 to microcomplJter 129. Next, at decision block 212, a check of the hookswitch signal 117 is made to determine if telephone set 101 is still off hook. If so, YES branch is taken back to decision block 208 to repeat the foregoing process. If telephohe set 101 is not off hook, NO branch is 30 taken from decisiorl block 212 to block 214 to return to other tasks.
Referring next to Figure 3, there is illustrated a flow chart for the process used by microcomputer 108 in Figure 1 for processing incoming telephone calls. Entering at WO 90/14729 PCr/US9OtO1797 ~ ~ ~3 ~ l 9~
START block 302, the process proce~ds to decision block 304, where a check is made to determin~ if an inccming call has been received. If not, NC) branch is taken to wait.
If an incoming call has been received, YES branch is taken 5 from decision block 304 to block 306, where microcomputer 1û8 gansratcs a binary one state of control signal 116 to generate the ringin~ signal. Next, at d~cision block 308, a check of the hookswitch signal 117 is made to determinc if telephone set 101 is off hook. If not, NO
10 branch is taken to wait. If telephone set 101 is off hook, YES branch is taken from decision block 308 to block 310 to generate a binary zero state of control signal 116, connect the call and thereafter return to other tasks at block 312.
Refsrring nsxt to Figure 4, there is illustrated a flow 15 chart for the process used by microcomput~r 129 in cellular telephone transceiver 109 in Figure 1 for receiving dialed digits of a telephone number and placing a cellular telephone call to the dialed telephone number. Entcring at START block 402, the process proceeds to decision block 20 404, where a check is made to determine if a dialed digit has been rsceived in a messags via bus 111 from microcomputcr 108. If not, NO branch is taken to wait. If a dialed digit has been received, YES branch is taken from decision block 404 to block 40~, where a five-second timer 2~ is reset and started. In the preferred embodiment, a five second timer implemented by interrupt based soft Nare is used to measure time elapsed since the last dialed digit was received. In other embodiments, such timer may be impl~mented by separate timing circuitry and may have a 3û vaiue which depends on operating charactsristics of telephone set 101. Next, at block 408, the received digit is stored in a pre-selected location of the memory of microcomput~r t29. Then, at d~cision bleck 410, a check is mad~ to de$armine if another dialed digit has been received.
W O 90/14729 ~! 3 ~ P~r/US90/01797 g If so, YES branch is taken from deoision block 410 back to biock 406 to repeat the foregoing process. If another dialF~d digit has not been received, NC) branch is taken from decision block 410 to decision block 412, where a check is 5 made to determine if the five-second timer has timsd out.
If not, NO branch is taken back to decision block 410 to check for receipt of ~he next dialeti digit, if any. If the five-second timer has timed out, YES braneh is takon from decision block 412 to decision block 418, wher~ the dialed 10 digits are checked to determine if a valid telephone number has been dialed. For example, the dialed digits are checked to determine if seven digits ar~ pr~sent for local numbers, ten digits ar~ present for long distance numbers preceded by a one or zerot thrae digits are present for 411 15 information, 611 telephone repair and 911 emergency, and other digit sequences depending on the country and telephone system in which cellular telephone is being used.
If the dialed digits are not valid, NO branch is taken from decision block 418 to branch A to rsturn to the flow chart 20 of Figure 2 and generato dial tone again. Thus, according to a feature cf the present invention, dial tone is returned to the user of eellular telephone if an invalid telephone number is dialed. If th~ dialed digits ar~ valid, YES branch is taken from decision block 418 to block 414 where a 25 cellular telephone call is plaoed to the number comprised of the digits stored in the pre-selected memory location of microcomputer 129, and thereafter return to other tasks at block 41 6.
In summary, a unique csllular telephone automatically 30 places and receives cellular talephone calls dialed in any pa~srn on a standard pulse or ton~ dial telephone set or equivalent d~vice. The dialed digits of a telephone number are processed by the unique c011ular telephone of the present invention on a real-time basis resulting in WO gO/14729 PCI/US90/01797 ~ ~ 3 ,~
- 1 o -automatic placement of a cellular telephone call without using a "SEND" button or circuitry that simulates the "SEND"
function as in the prior art.
Claims (10)
EXCLUSIVE PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED
AS FOLLOWS:
1. Cellular telephone apparatus, comprising:
a telephone device having dialing means for dialing digits of telephone numbers, producing a hookswitch signal indicating an off-hook condition and the dialed digits, and having first plug means coupled to the hookswitch signal; and a cellular telephone including:
second plug means for coupling to the first plug means of the telephone device;
cellular transceiver means including second microcomputer means and memory means, and being operable on cellular radio channels for communicating cellular telephone calls;
data bus means having first and second ports, the second port being coupled to said cellular transceiver means;
first microcomputer means coupled to the second plug means for detecting the off-hook condition of the hookswitch signal and thereafter receiving each dialed digit, and said first microcomputer means coupled to the first port of said data bus means for automatically transmitting each received digit immediately after receipt to the cellular transceiver means; and said second microcomputer means being coupled to the second port of said data bus means for storing each transmitted digit in said memory means, automatically validating all of the stored digits when the elasped time from receipt of the last stored digit exceeds a predetermined time interval, and automatically transmitting all of the stored digits on one of the cellular radio channels when the stored digits have been validated, whereby all dialed digits of each telephone number are automatically validated and transmitted when dialing is interrupted for at least the predetermined time interval.
a telephone device having dialing means for dialing digits of telephone numbers, producing a hookswitch signal indicating an off-hook condition and the dialed digits, and having first plug means coupled to the hookswitch signal; and a cellular telephone including:
second plug means for coupling to the first plug means of the telephone device;
cellular transceiver means including second microcomputer means and memory means, and being operable on cellular radio channels for communicating cellular telephone calls;
data bus means having first and second ports, the second port being coupled to said cellular transceiver means;
first microcomputer means coupled to the second plug means for detecting the off-hook condition of the hookswitch signal and thereafter receiving each dialed digit, and said first microcomputer means coupled to the first port of said data bus means for automatically transmitting each received digit immediately after receipt to the cellular transceiver means; and said second microcomputer means being coupled to the second port of said data bus means for storing each transmitted digit in said memory means, automatically validating all of the stored digits when the elasped time from receipt of the last stored digit exceeds a predetermined time interval, and automatically transmitting all of the stored digits on one of the cellular radio channels when the stored digits have been validated, whereby all dialed digits of each telephone number are automatically validated and transmitted when dialing is interrupted for at least the predetermined time interval.
2. The cellular telephone apparatus according to claim 1, wherein said cellular telephone further includes means coupled to the second plug means and first microcomputer means for generating a ringing signal for ringing the telephone device.
3. The cellular telephone apparatus according to claim 1, wherein said cellular telephone further includes means coupled to the second plug means and first microcomputer means for generating a dial tone signal.
4. The cellular telephone apparatus according to claim 1, wherein said cellular telephone means further includes means coupled to the second plug means for generating a DC voltage for powering the telephone device.
5. The cellular telephone apparatus according to claim 1, wherein said cellular telephone means further includes means coupled to the second plug means and cellular transceiver means for coupling audio signals therebetween.
6. Cellular telephone apparatus, comprising:
a telephone device having dialing means for dialing digits of telephone numbers, producing a hookswitch signal indicating an off-hook condition and the dialed digits, and having first plug means coupled to the hookswitch signal; and a cellular telephone including:
second plug means for coupling to the first plug means of the telephone device;
cellular transceiver means including second microcomputer means and memory means, and being operable on cellular radio channels for communicating cellular telephone calls;
data bus means having first and second ports, the second port being coupled to said cellular transceiver means;
first microcomputer means coupled to the second plug means for detecting the off-hook condition of the hookswitch signal and thereafter receiving each dialed digit, and said first microcomputer means coupled to the first port of said data bus means for automatically transmitting each received digit immediately after receipt of the cellular transceiver means; and said second microcomputer means being coupled to the second port of said data bus means for storing each transmitted digit in said memory means, and automatically transmitting all of the stored digits on one of the cellular radio channels when the elapsed time from receipt of the last stored digit exceeds a predetermined time intervals whereby all dialed digits of each telephone number are automatically transmitted when dialing is interrupted for at least the predetermined time interval.
a telephone device having dialing means for dialing digits of telephone numbers, producing a hookswitch signal indicating an off-hook condition and the dialed digits, and having first plug means coupled to the hookswitch signal; and a cellular telephone including:
second plug means for coupling to the first plug means of the telephone device;
cellular transceiver means including second microcomputer means and memory means, and being operable on cellular radio channels for communicating cellular telephone calls;
data bus means having first and second ports, the second port being coupled to said cellular transceiver means;
first microcomputer means coupled to the second plug means for detecting the off-hook condition of the hookswitch signal and thereafter receiving each dialed digit, and said first microcomputer means coupled to the first port of said data bus means for automatically transmitting each received digit immediately after receipt of the cellular transceiver means; and said second microcomputer means being coupled to the second port of said data bus means for storing each transmitted digit in said memory means, and automatically transmitting all of the stored digits on one of the cellular radio channels when the elapsed time from receipt of the last stored digit exceeds a predetermined time intervals whereby all dialed digits of each telephone number are automatically transmitted when dialing is interrupted for at least the predetermined time interval.
7. The cellular telephone apparatus according to claim 6, wherein said cellular telephone further includes means coupled to the second plug means and first microcomputer means for generating a ringing signal for ringing the telephone device.
8. The cellular telephone apparatus according to claim 6, wherein said cellular telephone further includes means coupled to the second plug means and first microcomputer means for generating a dial tone signal.
9. The cellular telephone apparatus according to claim 6, wherein said cellular telephone further includes means coupled to the second plug means for generating a DC voltage for powering the telephone device
10. The cellular telephone apparatus according to claim 6, wherein said cellular telephone further includes means coupled to the second plug means and cellular transceiver means for coupling audio signals therebetween.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34961989A | 1989-05-10 | 1989-05-10 | |
| US349,619 | 1989-05-10 | ||
| US36941989A | 1989-06-20 | 1989-06-20 | |
| US369,419 | 1989-06-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2032163A1 CA2032163A1 (en) | 1990-11-11 |
| CA2032163C true CA2032163C (en) | 1994-11-08 |
Family
ID=26996274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002032163A Expired - Fee Related CA2032163C (en) | 1989-05-10 | 1990-04-04 | Cellular telephone with standard telephone set |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0431096A4 (en) |
| JP (1) | JP3058684B2 (en) |
| KR (1) | KR940009476B1 (en) |
| CN (1) | CN1047181A (en) |
| AR (1) | AR242474A1 (en) |
| AU (1) | AU621752B2 (en) |
| BR (1) | BR9006758A (en) |
| CA (1) | CA2032163C (en) |
| FI (1) | FI910143A0 (en) |
| IL (1) | IL93889A0 (en) |
| MX (1) | MX173350B (en) |
| NZ (1) | NZ233606A (en) |
| WO (1) | WO1990014729A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2043550B1 (en) * | 1992-05-07 | 1994-07-01 | Amper Sa | EQUIPMENT FOR COUPLING A CELL RADIOTELEPHONY NETWORK OF ONE OR SEVERAL CONVENTIONAL TELEPHONE DEVICES. |
| DE4343836A1 (en) * | 1993-06-17 | 1995-07-13 | Deutsche Bundespost Telekom | Radio telephone with base and mobile handset units |
| US5444763A (en) * | 1993-06-17 | 1995-08-22 | Research In Motion Limited | Translation and connection device for radio frequency point of sale transaction systems |
| DE4329721A1 (en) * | 1993-09-03 | 1994-03-10 | Lothar Molzberger | Telephone subscriber appts. interface for radio appts. with send-receive changeover switch - compares multifrequency call tone sequence from radio appts. with programmed number to activate telephone subscriber appts. |
| FI96082C (en) * | 1994-04-13 | 1996-04-25 | Ne Products Oy | A method for interpreting selections of a selection sequence to be assigned to a radio transceiver by a selection means |
| DE19510264A1 (en) * | 1995-03-21 | 1997-04-30 | Herbert Kriechbaumer | Wireless data communication system especially for ISDN system |
| FI101028B (en) * | 1995-04-11 | 1998-03-31 | Nokia Telecommunications Oy | A method for connecting a fixed network subscriber device, such as a telephone set, to a WLL system, as well as a radio unit and a radio network implementing the method. |
| KR0185613B1 (en) * | 1995-05-27 | 1999-05-15 | 김광호 | Dialing method of mobile wireless telephone |
| DE19522324A1 (en) * | 1995-06-20 | 1997-01-02 | Gerhard Gleinser | Telephone interface esp. for connecting telephone, facsimile machine, modem, alarm bell etc. |
| FR2757005B1 (en) * | 1996-12-11 | 1999-07-16 | France Telecom | INTERFACE FOR CONNECTION BETWEEN RADIOTELEPHONE AND ANALOG CIRCUIT DEVICE |
| ATE197217T1 (en) | 1996-12-20 | 2000-11-15 | Plus Mobilfunk Gmbh E | TELEPHONE DEVICE |
| AU3464799A (en) * | 1998-04-14 | 1999-11-01 | Qualcomm Incorporated | Call origination in a wireless telephone using last dialed digit timeout |
| FR2784531B1 (en) | 1998-10-13 | 2000-12-29 | France Telecom | DEVICE FOR ACQUIRING AND TRANSFERRING INFORMATION RELATING TO MEANS OF PAYMENT TO A BANKING ORGANIZATION |
| GB2343587B (en) * | 1998-11-05 | 2001-06-06 | Ericsson Telefon Ab L M | Sending dialled number |
| US7792484B2 (en) | 2001-07-05 | 2010-09-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Arrangement and a method in a telephony system permitting communication using a stationary telephony terminal via a mobile radio telephone |
| US7263382B2 (en) * | 2004-06-25 | 2007-08-28 | Qualcomm Incorporated | System and method for background download of digital content to an intermittently connected peripheral device via a wireless device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4775997A (en) * | 1984-09-18 | 1988-10-04 | Metrofone, Inc. | System for interfacing a standard telephone set with a radio transceiver |
| US4658096A (en) * | 1984-09-18 | 1987-04-14 | Metrofone, Inc. | System for interfacing a standard telephone set with a radio transceiver |
| US4718080A (en) * | 1985-12-16 | 1988-01-05 | Serrano Arthur L | Microprocessor controlled interface for cellular system |
-
1990
- 1990-03-26 IL IL93889A patent/IL93889A0/en unknown
- 1990-04-04 JP JP2507232A patent/JP3058684B2/en not_active Expired - Fee Related
- 1990-04-04 BR BR909006758A patent/BR9006758A/en not_active IP Right Cessation
- 1990-04-04 CA CA002032163A patent/CA2032163C/en not_active Expired - Fee Related
- 1990-04-04 EP EP19900907896 patent/EP0431096A4/en not_active Ceased
- 1990-04-04 WO PCT/US1990/001797 patent/WO1990014729A1/en not_active Application Discontinuation
- 1990-04-04 AU AU55695/90A patent/AU621752B2/en not_active Ceased
- 1990-04-04 KR KR1019910700014A patent/KR940009476B1/en not_active IP Right Cessation
- 1990-05-04 MX MX020598A patent/MX173350B/en unknown
- 1990-05-07 AR AR90316798A patent/AR242474A1/en active
- 1990-05-08 CN CN90102628A patent/CN1047181A/en active Pending
- 1990-05-08 NZ NZ233606A patent/NZ233606A/en unknown
-
1991
- 1991-01-10 FI FI910143A patent/FI910143A0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR920702132A (en) | 1992-08-12 |
| CN1047181A (en) | 1990-11-21 |
| EP0431096A1 (en) | 1991-06-12 |
| EP0431096A4 (en) | 1992-07-01 |
| AU5569590A (en) | 1990-12-18 |
| AU621752B2 (en) | 1992-03-19 |
| FI910143A0 (en) | 1991-01-10 |
| JP3058684B2 (en) | 2000-07-04 |
| NZ233606A (en) | 1992-09-25 |
| IL93889A0 (en) | 1990-12-23 |
| CA2032163A1 (en) | 1990-11-11 |
| JPH03506109A (en) | 1991-12-26 |
| AR242474A1 (en) | 1993-03-31 |
| WO1990014729A1 (en) | 1990-11-29 |
| KR940009476B1 (en) | 1994-10-13 |
| MX173350B (en) | 1994-02-22 |
| BR9006758A (en) | 1991-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 20020404 |