JPS55143891A - Color video output drive adjusting circuit - Google Patents
Color video output drive adjusting circuitInfo
- Publication number
- JPS55143891A JPS55143891A JP5183979A JP5183979A JPS55143891A JP S55143891 A JPS55143891 A JP S55143891A JP 5183979 A JP5183979 A JP 5183979A JP 5183979 A JP5183979 A JP 5183979A JP S55143891 A JPS55143891 A JP S55143891A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- reference pulse
- adjusted
- terminal
- video output
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE:To make it possible to adjust drive well, by inserting a reference pulse signal into a part of the horizontal blanking period of the video signal and by comparing the reference pulse level and respective detection levels with each other to control the gain. CONSTITUTION:The red video signal, reference pulse signal Sa and luminance adjustment signal 9a are supplied to terminal 1, terminal 7, and terminal 9 respectively to obtain a signal, where luminance adjustment signal 9a and reference pulse signal Sa are superposed during the horizontal blanking period of the video signal, in the collector of transistor 2. This signal is supplied to Braun tube 15 through clamp circuit 11. Consequently, luminance can be adjusted by adjusting luminance adjustment signal 9a. Background can be adjusted by adjusting variable resistance 27. Further, the white level can be adjusted by adjusting variable resistor 38.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5183979A JPS55143891A (en) | 1979-04-26 | 1979-04-26 | Color video output drive adjusting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5183979A JPS55143891A (en) | 1979-04-26 | 1979-04-26 | Color video output drive adjusting circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55143891A true JPS55143891A (en) | 1980-11-10 |
JPS6136431B2 JPS6136431B2 (en) | 1986-08-18 |
Family
ID=12898020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5183979A Granted JPS55143891A (en) | 1979-04-26 | 1979-04-26 | Color video output drive adjusting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55143891A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5504538A (en) * | 1992-09-01 | 1996-04-02 | Matsushita Electric Industrial Co., Ltd. | Video signal processor for controlling the brightness and contrast of a display device |
-
1979
- 1979-04-26 JP JP5183979A patent/JPS55143891A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5504538A (en) * | 1992-09-01 | 1996-04-02 | Matsushita Electric Industrial Co., Ltd. | Video signal processor for controlling the brightness and contrast of a display device |
Also Published As
Publication number | Publication date |
---|---|
JPS6136431B2 (en) | 1986-08-18 |
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