JPS6318385B2 - - Google Patents
Info
- Publication number
- JPS6318385B2 JPS6318385B2 JP54083631A JP8363179A JPS6318385B2 JP S6318385 B2 JPS6318385 B2 JP S6318385B2 JP 54083631 A JP54083631 A JP 54083631A JP 8363179 A JP8363179 A JP 8363179A JP S6318385 B2 JPS6318385 B2 JP S6318385B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transistor
- video signal
- black level
- resistor
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8363179A JPS567574A (en) | 1979-07-02 | 1979-07-02 | Black level detection circuit for video signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8363179A JPS567574A (en) | 1979-07-02 | 1979-07-02 | Black level detection circuit for video signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS567574A JPS567574A (en) | 1981-01-26 |
JPS6318385B2 true JPS6318385B2 (fi) | 1988-04-18 |
Family
ID=13807805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8363179A Granted JPS567574A (en) | 1979-07-02 | 1979-07-02 | Black level detection circuit for video signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS567574A (fi) |
-
1979
- 1979-07-02 JP JP8363179A patent/JPS567574A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS567574A (en) | 1981-01-26 |
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