JPS5494827A - Adjusting circuit for video quality - Google Patents
Adjusting circuit for video qualityInfo
- Publication number
- JPS5494827A JPS5494827A JP211678A JP211678A JPS5494827A JP S5494827 A JPS5494827 A JP S5494827A JP 211678 A JP211678 A JP 211678A JP 211678 A JP211678 A JP 211678A JP S5494827 A JPS5494827 A JP S5494827A
- Authority
- JP
- Japan
- Prior art keywords
- transistors
- turned
- electric field
- video signal
- input electric
- 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
Landscapes
- Picture Signal Circuits (AREA)
Abstract
PURPOSE: To automatically control the video quality according to input electric field, with the control means of the video signal by AGC voltage.
CONSTITUTION: When the input electric field is weak, the reverse AGC voltage is increased and the transistor 3 is turned on. Thus, the transistors 7, 8 are turned off and the transistors 6, 9 are turned on and also the transistors 13, 14 are turned on. Thus, the video signal fed to the terminal 18 is outputted through the transistors 13, 14, 19 and the high band component is grounded with the capacitor 17. As a result, soft picture in which the high band components are dull is obtained and no noise is eminent. With the input electric field stronger, the operation is converse and the video signal is outputted through the transistors 3, 17 and normal picture not affected with the capacitor 17 can be obtained in this case.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP211678A JPS5494827A (en) | 1978-01-11 | 1978-01-11 | Adjusting circuit for video quality |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP211678A JPS5494827A (en) | 1978-01-11 | 1978-01-11 | Adjusting circuit for video quality |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5494827A true JPS5494827A (en) | 1979-07-26 |
Family
ID=11520371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP211678A Pending JPS5494827A (en) | 1978-01-11 | 1978-01-11 | Adjusting circuit for video quality |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5494827A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS577263U (en) * | 1980-06-12 | 1982-01-14 | ||
JPS5760777A (en) * | 1980-09-26 | 1982-04-12 | Mitsubishi Electric Corp | X-ray television device |
JPS6030277A (en) * | 1983-07-29 | 1985-02-15 | Hitachi Ltd | Signal processing circuit of video camera |
JPH0272083U (en) * | 1988-11-18 | 1990-06-01 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5371521A (en) * | 1976-12-08 | 1978-06-26 | Hitachi Ltd | Video signal detection system |
-
1978
- 1978-01-11 JP JP211678A patent/JPS5494827A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5371521A (en) * | 1976-12-08 | 1978-06-26 | Hitachi Ltd | Video signal detection system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS577263U (en) * | 1980-06-12 | 1982-01-14 | ||
JPS6327496Y2 (en) * | 1980-06-12 | 1988-07-25 | ||
JPS5760777A (en) * | 1980-09-26 | 1982-04-12 | Mitsubishi Electric Corp | X-ray television device |
JPS6030277A (en) * | 1983-07-29 | 1985-02-15 | Hitachi Ltd | Signal processing circuit of video camera |
JPH0272083U (en) * | 1988-11-18 | 1990-06-01 |
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