JPS5550758A - Multiplex signal demodulator - Google Patents

Multiplex signal demodulator

Info

Publication number
JPS5550758A
JPS5550758A JP12435778A JP12435778A JPS5550758A JP S5550758 A JPS5550758 A JP S5550758A JP 12435778 A JP12435778 A JP 12435778A JP 12435778 A JP12435778 A JP 12435778A JP S5550758 A JPS5550758 A JP S5550758A
Authority
JP
Japan
Prior art keywords
signal
voice
multiplex
multiplexed
circuit
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
JP12435778A
Other languages
Japanese (ja)
Inventor
Akito Umemoto
Takekatsu Ooyama
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12435778A priority Critical patent/JPS5550758A/en
Publication of JPS5550758A publication Critical patent/JPS5550758A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE: To obtain the multiplex signal demodulator for taking out other signal by a simple circuit construction by taking out one of the multiplexed signals through LPF and inverting a part of the signals in phase and synthesizing it with the multiplexed signal.
CONSTITUTION: The voice multiplex signals 11 of TV and the like are distributed into two systems through the buffer amplifier 12. In one of the systems, the high frequency component is removed through LPF 13 to take out the vice signal 1. In the other system, a part of the signal 1 is synthesized with the signal 11 in the synthesizing circuit 22 via the phase inversion circuit 21. The signal 3 the frequency of which is modulated by the voice signal 2 is taken out and further, only the original voice signal 2 is demodulated by the frequency demodulating circuit 15. Thus, the voice signal 1 is multiplexed with the signal 3 obtained by modulating the voice signal in frequency and in case the signal 1 approaches to the signal 3 and the multiplex signal is demodulated, the demodulation device less in crosstalk and distorsion can be obtained by a simple construction.
COPYRIGHT: (C)1980,JPO&Japio
JP12435778A 1978-10-09 1978-10-09 Multiplex signal demodulator Pending JPS5550758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12435778A JPS5550758A (en) 1978-10-09 1978-10-09 Multiplex signal demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12435778A JPS5550758A (en) 1978-10-09 1978-10-09 Multiplex signal demodulator

Publications (1)

Publication Number Publication Date
JPS5550758A true JPS5550758A (en) 1980-04-12

Family

ID=14883383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12435778A Pending JPS5550758A (en) 1978-10-09 1978-10-09 Multiplex signal demodulator

Country Status (1)

Country Link
JP (1) JPS5550758A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56165469U (en) * 1980-05-08 1981-12-08

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56165469U (en) * 1980-05-08 1981-12-08
JPS6246387Y2 (en) * 1980-05-08 1987-12-14

Similar Documents

Publication Publication Date Title
JPS5242324A (en) Chroma signal processing system
JPS5521681A (en) Dropout compensation unit
EP0166806A3 (en) A cosine signal corrector
JPS5550758A (en) Multiplex signal demodulator
JPS5215226A (en) Color demodulation circuit
JPS5210113A (en) Amplitude limiter
JPS5272120A (en) Color television set
JPS5217716A (en) Image receiver of television telephone
JPS5242308A (en) Multiplex frequency signal receiver
JPS5247361A (en) Demodulation system of multiple channel code
JPS5312257A (en) Demodulation system of angle modulated wave signal reproduced from multi-channel disc record
JPS5260518A (en) Television system for voice communication
JPS5269226A (en) Color difference signal demodulator of pal system television image rec eiver
JPS527603A (en) Narrow-band transmission system and storing system of audio signal
JPS5220752A (en) Amplitude phase modulation signal receiver
JPS5321513A (en) Digital circuit for vestigial side-band amplitude modulation and demodulation of facsimile signal
JPS53120306A (en) Sound demodulation system
JPS53109610A (en) Noise remover
JPS5286722A (en) Color television signal decoding unit
JPS5264860A (en) Amplitude phase modulation signal demodulation system
JPS5545290A (en) Beat removal system of video player
JPS5282175A (en) Demodulation circuit system of differential phase modulation signal
JPS53116128A (en) Modulated wave reproducing system
JPS53125721A (en) Video receiver
JPS52155009A (en) Picture processing system