JPS54113212A - Gate-type peak detector circuit - Google Patents
Gate-type peak detector circuitInfo
- Publication number
- JPS54113212A JPS54113212A JP1981178A JP1981178A JPS54113212A JP S54113212 A JPS54113212 A JP S54113212A JP 1981178 A JP1981178 A JP 1981178A JP 1981178 A JP1981178 A JP 1981178A JP S54113212 A JPS54113212 A JP S54113212A
- Authority
- JP
- Japan
- Prior art keywords
- trq
- circuit
- peak detector
- detector circuit
- color burst
- 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
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE: To improve a noise-proof property by adding a switching transistor to a peak detector circuit to give a gate function to the circuit and operating the circuit only during the color burst signal imput time.
CONSTITUTION: Composite chroma signals are applied to the base of transistor TrQ1 throgh coupling capacitor C1, and TrQ3 and this TrQ1 form a differential amplifier. Here, pulse signals synchronizing with color burst signals are inputted to TrQ2 connected to the emitter of TrQ3, and a smoothing circuit consistig of resistance R5 and capacitor C2 is provided in the collector of TrQ1. As a result, since switching TrQ2 is added to a peak detector circuit to give a gate function to this circuit, the circuit is operated only during the color burst signal input fixed time, so that the noise-proof property can be improved.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1981178A JPS54113212A (en) | 1978-02-24 | 1978-02-24 | Gate-type peak detector circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1981178A JPS54113212A (en) | 1978-02-24 | 1978-02-24 | Gate-type peak detector circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54113212A true JPS54113212A (en) | 1979-09-04 |
Family
ID=12009705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1981178A Pending JPS54113212A (en) | 1978-02-24 | 1978-02-24 | Gate-type peak detector circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54113212A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5715593A (en) * | 1980-07-02 | 1982-01-26 | Hitachi Ltd | Integrated circuit for peak detection |
-
1978
- 1978-02-24 JP JP1981178A patent/JPS54113212A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5715593A (en) * | 1980-07-02 | 1982-01-26 | Hitachi Ltd | Integrated circuit for peak detection |
JPH0154913B2 (en) * | 1980-07-02 | 1989-11-21 | Hitachi Ltd |
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