JPS55100780A - Television relay broadcasting system - Google Patents

Television relay broadcasting system

Info

Publication number
JPS55100780A
JPS55100780A JP702979A JP702979A JPS55100780A JP S55100780 A JPS55100780 A JP S55100780A JP 702979 A JP702979 A JP 702979A JP 702979 A JP702979 A JP 702979A JP S55100780 A JPS55100780 A JP S55100780A
Authority
JP
Japan
Prior art keywords
signal
video
video signal
carrier
relay broadcasting
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.)
Granted
Application number
JP702979A
Other languages
Japanese (ja)
Other versions
JPS5932945B2 (en
Inventor
Kenji Koro
Motomi Sugano
Yoshinobu Kasai
Tadao Nagatsuma
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.)
Oki Electric Industry Co Ltd
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Oki Electric Industry Co Ltd
Japan Broadcasting Corp
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 Nippon Hoso Kyokai NHK, Oki Electric Industry Co Ltd, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP54007029A priority Critical patent/JPS5932945B2/en
Publication of JPS55100780A publication Critical patent/JPS55100780A/en
Publication of JPS5932945B2 publication Critical patent/JPS5932945B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Radio Relay Systems (AREA)
  • Details Of Television Systems (AREA)

Abstract

PURPOSE: To prevent a sound signal and video signal from shifting frequency during relay broadcasting by extracting a video carrier from a synchronous detection type demodulator and then by re-modulating the video signal by it.
CONSTITUTION: Input signal Fin is converted into an IF signal by reception part RX and local oscillation part LO and the IF signal is further separated by separator EQ into video signal Fv and sound signal Fa. Video signal Fv is applied to re- modulating modulator by way of synchronous detection type demodulator DEM and picture-quality improving equipment V.P. Carrier regenerating device CARR regenerates a video carrier from demodulator DEM and then applies it to modulator MOD.
COPYRIGHT: (C)1980,JPO&Japio
JP54007029A 1979-01-26 1979-01-26 TV relay broadcast system Expired JPS5932945B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54007029A JPS5932945B2 (en) 1979-01-26 1979-01-26 TV relay broadcast system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54007029A JPS5932945B2 (en) 1979-01-26 1979-01-26 TV relay broadcast system

Publications (2)

Publication Number Publication Date
JPS55100780A true JPS55100780A (en) 1980-07-31
JPS5932945B2 JPS5932945B2 (en) 1984-08-11

Family

ID=11654604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54007029A Expired JPS5932945B2 (en) 1979-01-26 1979-01-26 TV relay broadcast system

Country Status (1)

Country Link
JP (1) JPS5932945B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61187428A (en) * 1985-02-15 1986-08-21 Nippon Telegr & Teleph Corp <Ntt> Frequency retransmitting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61187428A (en) * 1985-02-15 1986-08-21 Nippon Telegr & Teleph Corp <Ntt> Frequency retransmitting system
JPH0411141B2 (en) * 1985-02-15 1992-02-27

Also Published As

Publication number Publication date
JPS5932945B2 (en) 1984-08-11

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