JPS63133781U - - Google Patents
Info
- Publication number
- JPS63133781U JPS63133781U JP2608987U JP2608987U JPS63133781U JP S63133781 U JPS63133781 U JP S63133781U JP 2608987 U JP2608987 U JP 2608987U JP 2608987 U JP2608987 U JP 2608987U JP S63133781 U JPS63133781 U JP S63133781U
- Authority
- JP
- Japan
- Prior art keywords
- acc
- circuit
- predetermined value
- peak
- level
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は、本考案による色復調回路の一実施例
を示すブロツク図、第２図は、従来のＰＡＬ方式
色復調回路を示すブロツク図である。
２……クロマバンドパスフイルター、３……Ａ
ＣＣ回路、４……１Ｈ遅延回路、５……クロマ復
調回路、６……復調バースト信号レベル検出回路
、８……ピーククリツプ検出回路。
FIG. 1 is a block diagram showing an embodiment of a color demodulation circuit according to the present invention, and FIG. 2 is a block diagram showing a conventional PAL color demodulation circuit. 2...Chroma band pass filter, 3...A
CC circuit, 4... 1H delay circuit, 5... chroma demodulation circuit, 6... demodulated burst signal level detection circuit, 8... peak clip detection circuit.
Claims (1)
ｕｔｏ Ｃｏｌｏｕｒ Ｃｏｎｔｒｏｌ）回路と
、該ＡＣＣ回路の出力ピークレベルが所定値を越
えたか否かを検出するピーククリツプ検出回路と
を有し、前記ＡＣＣ回路のピークレベルが所定値
を越えた時には、前記ＡＣＣ回路のゲインを減少
させるようにしたことを特徴とする色復調回路。 ACC (A) is used to keep the color signal level at a constant value.
and a peak clip detection circuit for detecting whether the output peak level of the ACC circuit exceeds a predetermined value, and when the peak level of the ACC circuit exceeds the predetermined value, the ACC A color demodulation circuit characterized in that the gain of the circuit is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2608987U JPS63133781U (en) | 1987-02-23 | 1987-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2608987U JPS63133781U (en) | 1987-02-23 | 1987-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63133781U true JPS63133781U (en) | 1988-09-01 |
Family
ID=30826842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2608987U Pending JPS63133781U (en) | 1987-02-23 | 1987-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63133781U (en) |
-
1987
- 1987-02-23 JP JP2608987U patent/JPS63133781U/ja active Pending
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