JPS55100780A - Television relay broadcasting system - Google Patents
Television relay broadcasting systemInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61187428A (en) * | 1985-02-15 | 1986-08-21 | Nippon Telegr & Teleph Corp <Ntt> | Frequency retransmitting system |
-
1979
- 1979-01-26 JP JP54007029A patent/JPS5932945B2/en not_active Expired
Cited By (2)
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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