[go: up one dir, main page]

JPS57170635A - Radio telephone set - Google Patents

Radio telephone set

Info

Publication number
JPS57170635A
JPS57170635A JP56055440A JP5544081A JPS57170635A JP S57170635 A JPS57170635 A JP S57170635A JP 56055440 A JP56055440 A JP 56055440A JP 5544081 A JP5544081 A JP 5544081A JP S57170635 A JPS57170635 A JP S57170635A
Authority
JP
Japan
Prior art keywords
signal
circuit
dial
frequency
outputs
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.)
Pending
Application number
JP56055440A
Other languages
Japanese (ja)
Inventor
Yasuhiko Fujita
Shigenori Okamoto
Koichi Ito
Toshitaka Fujii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Toshiba Corp
Nippon Telegraph and Telephone Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Nippon Telegraph and Telephone Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56055440A priority Critical patent/JPS57170635A/en
Publication of JPS57170635A publication Critical patent/JPS57170635A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W99/00—Subject matter not provided for in other groups of this subclass

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To eliminate the need for a signal generating circuit by outputting a dial signal and a control signal by a programmable frequency dividing circuit in common, and outputting the frequency of a control signal which corresponds to the channel of a telephone set by varying the frequency division ratio of a frequency dividing circuit. CONSTITUTION:The control part 33-2 of a master device receives an applied dial number and a signal generated by the hook on, etc., of an outgoing and an incoming call to outputs a switch selection signal to signal selection switches 44 and 45, and also to outputs a signal for a high group which corresponds to the dial number to a code converting circuit for a tone signal and a code converting circuit 41 for the dial signal. Then, a programmable frequency dividing circuit 43 outputs a reference signal from a reference clock generating circuit 33 by varying its frequency division ratio corresponding to the code-converted signals. A frequency selecting circuit 46 removes higher harmonics and sends the remainder to signal selection switches 44 and 45. The signal selection switches 44 and 45 are turned on by the switch selection signal of the control part 33-2 to selectively output the dial signal and control signal during the period.
JP56055440A 1981-04-13 1981-04-13 Radio telephone set Pending JPS57170635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56055440A JPS57170635A (en) 1981-04-13 1981-04-13 Radio telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56055440A JPS57170635A (en) 1981-04-13 1981-04-13 Radio telephone set

Publications (1)

Publication Number Publication Date
JPS57170635A true JPS57170635A (en) 1982-10-20

Family

ID=12998648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56055440A Pending JPS57170635A (en) 1981-04-13 1981-04-13 Radio telephone set

Country Status (1)

Country Link
JP (1) JPS57170635A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6175651U (en) * 1984-10-24 1986-05-21
KR950035150A (en) * 1994-05-04 1995-12-30 프레데릭 얀 스미트 A programmable frequency divider circuit, a frequency synthesizer comprising a divider circuit and a wireless telephone comprising a frequency synthesizer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5499503A (en) * 1978-01-23 1979-08-06 Toshiba Corp Key telephone set

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5499503A (en) * 1978-01-23 1979-08-06 Toshiba Corp Key telephone set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6175651U (en) * 1984-10-24 1986-05-21
KR950035150A (en) * 1994-05-04 1995-12-30 프레데릭 얀 스미트 A programmable frequency divider circuit, a frequency synthesizer comprising a divider circuit and a wireless telephone comprising a frequency synthesizer

Similar Documents

Publication Publication Date Title
JPS647726A (en) Radiotelephone system
US4282410A (en) Ringing signal generator
JPS57170635A (en) Radio telephone set
ES380787A1 (en) System for party line signalling using re-encoded ringing signals
JPS5762650A (en) Dial device for telephone
JPS56115066A (en) Transmission system of call signal
US3686445A (en) Timing signal generators
JPS56131245A (en) Signal detecting circuit
JPS5430707A (en) Six-wire switching system
JPS5634270A (en) Connection system between main units in key telephone set
JPS53117922A (en) Absence reception voice answer skip system
SE7501942L (en)
JPS57104354A (en) Button telephone set
JPS56149892A (en) Line concentration system of subscriber switchboard
JPS574688A (en) Call signal control system for multiparty telephone set
JPS566590A (en) Multifrequency call signal control system
JPS5435604A (en) Ringing system of push-button telephone set
JPS5642486A (en) Trunk device
SU1109961A1 (en) Voice-frequency receiver
KR940001391Y1 (en) Pcm tone origination apparatus for electronic exchange
FR2406357A1 (en) Circuit connecting subscriber line to telephone exchange - has balanced amplifier whose input is connected to one or other of two supply points (BE 17.4.79)
JPS57112172A (en) Origination signal generating device for telephone
JPS56165453A (en) Camp-on system
JPS57143992A (en) Transmitting and receiving circuit for digital signal
JPS5630355A (en) Call selection system of terminal equipment