JPS558168A - Signal identification circuit - Google Patents

Signal identification circuit

Info

Publication number
JPS558168A
JPS558168A JP8153978A JP8153978A JPS558168A JP S558168 A JPS558168 A JP S558168A JP 8153978 A JP8153978 A JP 8153978A JP 8153978 A JP8153978 A JP 8153978A JP S558168 A JPS558168 A JP S558168A
Authority
JP
Japan
Prior art keywords
frequency
signal
featuring
value
carrier wave
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
JP8153978A
Other languages
Japanese (ja)
Inventor
Toyotaka Machida
Kenji Kaneko
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP8153978A priority Critical patent/JPS558168A/en
Publication of JPS558168A publication Critical patent/JPS558168A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE: To facilitate an easy selection of the frequency by giving N-multiplication to the frequency value of the signal obtained by demodulating the modulated wave received and then drawing out the difference to the frequency of the carrier wave.
CONSTITUTION: Carrier wave sO featuring specific frequency value fO is amplitude- modulated and then transmitted with one signal selected among signals si of plural value featuring different frequencies used as the modulated wave. Then the frequency value fi is N-multiplied via frequency multiplying circuit 4 for signal si obtained by receiving the modulated wave and then demodulating it through demodulator 3. At the same time, the signal featuring the difference between frequency N.fi and frequency fO of carrier wave sO is obtained through signal process circuit 6. This signal can be selected easily via frequency selection circuits 7a∼7n. As a result, the signals can be identified satisfactorily even through the frequency selection circuit featuring a comparatively wide pass band.
COPYRIGHT: (C)1980,JPO&Japio
JP8153978A 1978-07-05 1978-07-05 Signal identification circuit Pending JPS558168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8153978A JPS558168A (en) 1978-07-05 1978-07-05 Signal identification circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8153978A JPS558168A (en) 1978-07-05 1978-07-05 Signal identification circuit

Publications (1)

Publication Number Publication Date
JPS558168A true JPS558168A (en) 1980-01-21

Family

ID=13749095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8153978A Pending JPS558168A (en) 1978-07-05 1978-07-05 Signal identification circuit

Country Status (1)

Country Link
JP (1) JPS558168A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49130660A (en) * 1973-04-14 1974-12-14
JPS526563A (en) * 1975-07-04 1977-01-19 Toshiba Corp Electronic clock with luminous bodies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49130660A (en) * 1973-04-14 1974-12-14
JPS526563A (en) * 1975-07-04 1977-01-19 Toshiba Corp Electronic clock with luminous bodies

Similar Documents

Publication Publication Date Title
JPS5222866A (en) Demodulation system for angle modulated signal wave
JPS5233460A (en) Fm demodulator
JPS524105A (en) Frequency synthesizer-method transmitter-receiver
JPS5328361A (en) Quadratur e phase detection circuit
JPS5215226A (en) Color demodulation circuit
JPS51116609A (en) Initial connection system and apparatus for time division multiple acc ess communication system
JPS558168A (en) Signal identification circuit
JPS54101651A (en) Fm demodulator circuit
JPS52102626A (en) Tv receiver
JPS5318912A (en) Signal reception circuit of television receiver
JPS5438717A (en) Fm receiver
JPS5216130A (en) Color tv receiver circuit
JPS55117314A (en) Fm demodulator
JPS5541038A (en) Demodulation system for single side-band signal
JPS52131767A (en) Frequency detector
JPS52150927A (en) Draw-out circuit of code signal
Gavrilin Indeterminacy relations for a radio channel with random parameters
JPS5669958A (en) Demodulator
JPS5242056A (en) Fm demodulation distortion measuring unit
JPS52141129A (en) Color demodulator for color tv picture receiver
ES455836A1 (en) Method and circuit arrangement for the interference-free reception of the baseband of a baseband vocoder
JPS5348451A (en) Frequency-modulated wave demodulator circuit
JPS545318A (en) Rejection system of interferring distortion caused in demodulation signal due to interference between fm signals
JPS5294709A (en) Fm/am receiver
JPS56111358A (en) Signal control circuit