JPS5717277A - Raster blanking circuit - Google Patents
Raster blanking circuitInfo
- Publication number
- JPS5717277A JPS5717277A JP9248780A JP9248780A JPS5717277A JP S5717277 A JPS5717277 A JP S5717277A JP 9248780 A JP9248780 A JP 9248780A JP 9248780 A JP9248780 A JP 9248780A JP S5717277 A JPS5717277 A JP S5717277A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- turns
- synchronizing
- clamp
- clamp signal
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
Abstract
PURPOSE:To prevent the distortion of picture accompanied with a tuning voltage leading characteristic, by producing a clamp signal, interrupting the video and synchronizing signals at first, transmitting the synchronizing signal only for approach run, producing the picture after the absence of a clamp signal. CONSTITUTION:A voltage on one terminal (-) of a differential amplifier 10 is rapidly discharged with an input of a CH switching signal at t1 to produce a clamp signal. This clamp signal turns on a transistor (TR)16 of a muting circuit 5 and also turns on a TR17 of a synchronizing separation circuit 6. Since no video signal component is inputted until a TR18 turns off at an addition circuit through the conductive TR16 of the muting circuit 5, no output is appeared at an output terminal 8. Next, when no clamp signal is present, the TRs 16, 17 are nonconductive, and when the TR18 turns on, the video signal including the synchronizing signal is accucrately synchronized via the TRs 9, 18 to be appeared on the output terminal 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9248780A JPS5717277A (en) | 1980-07-07 | 1980-07-07 | Raster blanking circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9248780A JPS5717277A (en) | 1980-07-07 | 1980-07-07 | Raster blanking circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5717277A true JPS5717277A (en) | 1982-01-28 |
Family
ID=14055653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9248780A Pending JPS5717277A (en) | 1980-07-07 | 1980-07-07 | Raster blanking circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5717277A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120656U (en) * | 1982-02-09 | 1983-08-17 | 沖電気工業株式会社 | semiconductor equipment |
| JPS59195880U (en) * | 1983-06-10 | 1984-12-26 | 三洋電機株式会社 | Beam index type color television receiver |
| JPS61264973A (en) * | 1985-05-20 | 1986-11-22 | Matsushita Electric Ind Co Ltd | Video defeat circuit |
| JPS6430971U (en) * | 1987-08-18 | 1989-02-27 | ||
| JPH06149181A (en) * | 1992-11-02 | 1994-05-27 | Nippondenso Co Ltd | Video displaying device |
-
1980
- 1980-07-07 JP JP9248780A patent/JPS5717277A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120656U (en) * | 1982-02-09 | 1983-08-17 | 沖電気工業株式会社 | semiconductor equipment |
| JPS59195880U (en) * | 1983-06-10 | 1984-12-26 | 三洋電機株式会社 | Beam index type color television receiver |
| JPH039426Y2 (en) * | 1983-06-10 | 1991-03-08 | ||
| JPS61264973A (en) * | 1985-05-20 | 1986-11-22 | Matsushita Electric Ind Co Ltd | Video defeat circuit |
| JPH0513430B2 (en) * | 1985-05-20 | 1993-02-22 | Matsushita Electric Ind Co Ltd | |
| JPS6430971U (en) * | 1987-08-18 | 1989-02-27 | ||
| JPH06149181A (en) * | 1992-11-02 | 1994-05-27 | Nippondenso Co Ltd | Video displaying device |
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