JPS5521683A - Television relay and broadcasting unit - Google Patents
Television relay and broadcasting unitInfo
- Publication number
- JPS5521683A JPS5521683A JP9531678A JP9531678A JPS5521683A JP S5521683 A JPS5521683 A JP S5521683A JP 9531678 A JP9531678 A JP 9531678A JP 9531678 A JP9531678 A JP 9531678A JP S5521683 A JPS5521683 A JP S5521683A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- carrier
- output
- fed
- video
- 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
Links
Abstract
PURPOSE: To make unnecessary the adjustment of frequency characteristics and the usage of filters and to prevent the deficiency of video quality, by holding the output of the relay unit for video as well as audio at constant level, when the level of the audio carrier is fluctuated due to fading or the like.
CONSTITUTION: The signal fed to the input terminal A is outputted to the output terminal B via the gain adjusting circuit 1, tilt adjusting circuit 2 and branch circuit 3. Further, a part of the output is picked up from the circuit 3 and it is fed to the detection circuits 4 and 5 to pick up separately only the carrier and audio carrier and they are fed to the comparison control circuit 8 via the detection circuits 6 and 7. Further, the tilt adjusting circuit 2 is controlled so that the output difference between the video carrier and audio carrier can be specified value with the control circuit 8. On the other hand, the video carrier signal picked up with the detection circuit 4 is detected with the detection circuit 6 and is fed to the gain control circuit 9. The gain adjusting circuit 1 is controlled with the output of the circuit 9 to make unnecessary the adjustment of the frequency characteristics and the usage of filter.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9531678A JPS5521683A (en) | 1978-08-03 | 1978-08-03 | Television relay and broadcasting unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9531678A JPS5521683A (en) | 1978-08-03 | 1978-08-03 | Television relay and broadcasting unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5521683A true JPS5521683A (en) | 1980-02-15 |
Family
ID=14134339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9531678A Pending JPS5521683A (en) | 1978-08-03 | 1978-08-03 | Television relay and broadcasting unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5521683A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58114578A (en) * | 1981-12-07 | 1983-07-07 | ソシエテ・アノニム・エル・ジエイ・テ・ラボラトワ−ル・ジエネラル・デ・テレコミユニカシイオン | Television signal retransmitter in common channel with automatic control function of video/voice ratio |
-
1978
- 1978-08-03 JP JP9531678A patent/JPS5521683A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58114578A (en) * | 1981-12-07 | 1983-07-07 | ソシエテ・アノニム・エル・ジエイ・テ・ラボラトワ−ル・ジエネラル・デ・テレコミユニカシイオン | Television signal retransmitter in common channel with automatic control function of video/voice ratio |
JPH0370434B2 (en) * | 1981-12-07 | 1991-11-07 | Eru Jei Te Lab Jeneraru De Terekomyunikashiion Sa |
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