JPS5416919A - Automaic gain control circuit - Google Patents
Automaic gain control circuitInfo
- Publication number
- JPS5416919A JPS5416919A JP8099177A JP8099177A JPS5416919A JP S5416919 A JPS5416919 A JP S5416919A JP 8099177 A JP8099177 A JP 8099177A JP 8099177 A JP8099177 A JP 8099177A JP S5416919 A JPS5416919 A JP S5416919A
- Authority
- JP
- Japan
- Prior art keywords
- gain control
- automaic
- control circuit
- composite video
- level
- 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
Abstract
PURPOSE: To secure a constant level for the maxmum composite video signal through a gain control by adding to the composite video signal the synchronous signal of the ratio between the luminance signal level and the synchronous signal level in opposite polarity during the back-porch period.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8099177A JPS5416919A (en) | 1977-07-08 | 1977-07-08 | Automaic gain control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8099177A JPS5416919A (en) | 1977-07-08 | 1977-07-08 | Automaic gain control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5416919A true JPS5416919A (en) | 1979-02-07 |
JPS628990B2 JPS628990B2 (en) | 1987-02-25 |
Family
ID=13733959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8099177A Granted JPS5416919A (en) | 1977-07-08 | 1977-07-08 | Automaic gain control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5416919A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5848581A (en) * | 1981-09-17 | 1983-03-22 | Matsushita Electric Ind Co Ltd | Ghost eliminating device |
JPS619962U (en) * | 1984-06-22 | 1986-01-21 | 日本電気ホームエレクトロニクス株式会社 | AGC circuit |
JPS6316773U (en) * | 1986-07-17 | 1988-02-03 | ||
US4970594A (en) * | 1986-12-26 | 1990-11-13 | Matsushita Electric Industrial Co., Ltd. | Television video signal control system |
JPH04236581A (en) * | 1991-01-18 | 1992-08-25 | Fuji Photo Film Co Ltd | Black level correcting circuit for video signal |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5062725A (en) * | 1973-10-05 | 1975-05-28 |
-
1977
- 1977-07-08 JP JP8099177A patent/JPS5416919A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5062725A (en) * | 1973-10-05 | 1975-05-28 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5848581A (en) * | 1981-09-17 | 1983-03-22 | Matsushita Electric Ind Co Ltd | Ghost eliminating device |
JPS619962U (en) * | 1984-06-22 | 1986-01-21 | 日本電気ホームエレクトロニクス株式会社 | AGC circuit |
JPH024542Y2 (en) * | 1984-06-22 | 1990-02-02 | ||
JPS6316773U (en) * | 1986-07-17 | 1988-02-03 | ||
US4970594A (en) * | 1986-12-26 | 1990-11-13 | Matsushita Electric Industrial Co., Ltd. | Television video signal control system |
JPH04236581A (en) * | 1991-01-18 | 1992-08-25 | Fuji Photo Film Co Ltd | Black level correcting circuit for video signal |
Also Published As
Publication number | Publication date |
---|---|
JPS628990B2 (en) | 1987-02-25 |
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