JPH0370477U - - Google Patents
Info
- Publication number
- JPH0370477U JPH0370477U JP13030789U JP13030789U JPH0370477U JP H0370477 U JPH0370477 U JP H0370477U JP 13030789 U JP13030789 U JP 13030789U JP 13030789 U JP13030789 U JP 13030789U JP H0370477 U JPH0370477 U JP H0370477U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- color signal
- color
- circuit
- luminance
- 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
- 238000000926 separation method Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000010363 phase shift Effects 0.000 description 1
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の映像信号処理回路の一実施例
を示すブロツク図、第２図は本考案の映像信号処
理回路に使用されるトラツプ回路の一実施例を示
す回路図、第３図は従来のトラツプ回路を示す回
路図である。
１……映像信号入力端子、２……輝度信号色信
号分離回路（Ｙ／Ｃ分離回路）、３，４……帯域
通過フイルタ（ＢＰＦ）、５，６……移相回路、
７……位相検波回路、８……絶対値回路、９……
トラツプ回路（減衰器）、１０……輝度信号出力
端子。
Fig. 1 is a block diagram showing an embodiment of the video signal processing circuit of the present invention, Fig. 2 is a circuit diagram showing an embodiment of the trap circuit used in the video signal processing circuit of the invention, and Fig. 3 is a block diagram showing an embodiment of the video signal processing circuit of the invention. 1 is a circuit diagram showing a conventional trap circuit. FIG. 1... Video signal input terminal, 2... Luminance signal color signal separation circuit (Y/C separation circuit), 3, 4... Band pass filter (BPF), 5, 6... Phase shift circuit,
7... Phase detection circuit, 8... Absolute value circuit, 9...
Trap circuit (attenuator), 10... Luminance signal output terminal.
Claims (1)
する輝度信号色信号分離回路と、 この輝度信号色信号分離回路より出力される輝
度信号が供給され、この輝度信号に含まれる色信
号成分を減衰させる減衰器とを有する映像信号処
理回路において、 前記輝度信号色信号分離回路より出力される輝
度信号が供給され、この輝度信号に含まれる色信
号成分を取出す第１の帯域通過フイルタと、 前記輝度信号色信号分離回路より出力される色
信号が供給され、不要周波数成分を除去して色信
号成分のみを出力する第２の帯域通過フイルタと
、 前記第１の帯域通過フイルタより出力される色
信号とこの第２の帯域通過フイルタより出力され
る色信号とが供給され、位相検波を行なう位相検
波回路とを有し、 この位相検波回路の出力信号により前記減衰器
の色信号成分減衰量を制御することを特徴とする
映像信号処理回路。[Claims for Utility Model Registration] A luminance signal/chrominance signal separation circuit that separates and outputs a video signal into a luminance signal and a color signal; In a video signal processing circuit having an attenuator for attenuating a color signal component included in the signal, the luminance signal output from the luminance signal/chrominance signal separation circuit is supplied, and a step for extracting the color signal component included in the luminance signal is provided. a second band-pass filter that is supplied with the color signal output from the luminance signal/color signal separation circuit, removes unnecessary frequency components, and outputs only the color signal component; It has a phase detection circuit which is supplied with the color signal output from the band-pass filter and the color signal output from the second band-pass filter and performs phase detection, and the output signal of the phase detection circuit is used to detect the attenuation. A video signal processing circuit characterized in that it controls the amount of attenuation of a color signal component of a device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13030789U JPH0370477U (en) | 1989-11-08 | 1989-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13030789U JPH0370477U (en) | 1989-11-08 | 1989-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0370477U true JPH0370477U (en) | 1991-07-15 |
Family
ID=31677892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13030789U Pending JPH0370477U (en) | 1989-11-08 | 1989-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0370477U (en) |
-
1989
- 1989-11-08 JP JP13030789U patent/JPH0370477U/ja active Pending
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