JPS53133323A - Video keying amplifier circuit - Google Patents
Video keying amplifier circuitInfo
- Publication number
- JPS53133323A JPS53133323A JP4920477A JP4920477A JPS53133323A JP S53133323 A JPS53133323 A JP S53133323A JP 4920477 A JP4920477 A JP 4920477A JP 4920477 A JP4920477 A JP 4920477A JP S53133323 A JPS53133323 A JP S53133323A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier circuit
- potential
- video keying
- keying amplifier
- 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.)
- Granted
Links
Landscapes
- Studio Circuits (AREA)
Abstract
PURPOSE: To reduce the shift of the black balance caused by the fluctuation of the potential of the using transistor or the clamp potential, by keeping the clamp reference potential identical to the potential of the video signal input part.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4920477A JPS6034867B2 (en) | 1977-04-27 | 1977-04-27 | Video keying amplifier circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4920477A JPS6034867B2 (en) | 1977-04-27 | 1977-04-27 | Video keying amplifier circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53133323A true JPS53133323A (en) | 1978-11-21 |
JPS6034867B2 JPS6034867B2 (en) | 1985-08-10 |
Family
ID=12824452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4920477A Expired JPS6034867B2 (en) | 1977-04-27 | 1977-04-27 | Video keying amplifier circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6034867B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57122979U (en) * | 1981-01-27 | 1982-07-31 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62192757U (en) * | 1986-05-28 | 1987-12-08 |
-
1977
- 1977-04-27 JP JP4920477A patent/JPS6034867B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57122979U (en) * | 1981-01-27 | 1982-07-31 |
Also Published As
Publication number | Publication date |
---|---|
JPS6034867B2 (en) | 1985-08-10 |
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