JPH0224689U - - Google Patents
Info
- Publication number
- JPH0224689U JPH0224689U JP10214588U JP10214588U JPH0224689U JP H0224689 U JPH0224689 U JP H0224689U JP 10214588 U JP10214588 U JP 10214588U JP 10214588 U JP10214588 U JP 10214588U JP H0224689 U JPH0224689 U JP H0224689U
- Authority
- JP
- Japan
- Prior art keywords
- luminance
- chromaticity
- component
- circuit
- color image
- 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 8
- 238000000926 separation method Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
- Closed-Circuit Television Systems (AREA)
- Color Television Systems (AREA)
Description
第１図は本考案の一実施例の回路ブロツク図で
ある。
２……バツフアアンプ、３……輝度・色度分離
回路、４……輝度成分、５……色度成分、６……
色度成分制御回路、７……輝度・色度合成回路、
８……出力アンプ、１０……断続状態制御回路、
１１……低彩度検出回路、１２……低輝度検出回
路、１３……高域検出回路、１５……オア回路。
FIG. 1 is a circuit block diagram of an embodiment of the present invention. 2... Buffer amplifier, 3... Luminance/chromaticity separation circuit, 4... Luminance component, 5... Chromaticity component, 6...
Chromaticity component control circuit, 7... Luminance/chromaticity synthesis circuit,
8...Output amplifier, 10...Intermittent state control circuit,
11...Low saturation detection circuit, 12...Low luminance detection circuit, 13...High frequency detection circuit, 15...OR circuit.
Claims (1)
る輝度・色度分離回路と、 前記輝度・色度分離回路により分離された前記
カラー画像信号の輝度成分と色度成分を合成する
輝度・色度合成回路と、 前記輝度・色度分離回路により分離された色度
成分の前記輝度・色度合成回路への入力を断続す
る色度成分制御回路と、 前記色度成分制御回路にその断続動作を制御す
る制御信号を供給する断続状態制御回路とを備え
、 前記断続状態制御回路は、 前記カラー画像信号の色度成分の彩度が所定の
彩度より小さいとき前記色度成分制御回路を遮断
状態にする制御信号を出力する低彩度検出回路、 前記カラー画像信号の輝度成分の輝度が所定の
輝度より小さいとき前記色度成分制御回路を遮断
状態とする制御信号を出力する低輝度検出回路、 前記カラー画像信号の輝度成分の高域成分が所
定のレベルより小さいとき前記色度成分制御回路
を遮断状態とする制御信号を出力する高域検出回
路、 の３個の検出回路のうち少なくとも１個の検出回
路を有することを特徴とするカラー画像信号処理
回路。[Claims for Utility Model Registration] A luminance/chromaticity separation circuit that separates the luminance component and chromaticity component of a color image signal, and a luminance component and chromaticity of the color image signal separated by the luminance/chromaticity separation circuit. a luminance/chromaticity synthesis circuit for synthesizing the luminance/chromaticity components; a chromaticity component control circuit for intermittent input of the chromaticity components separated by the luminance/chromaticity separation circuit to the luminance/chromaticity synthesis circuit; an intermittent state control circuit that supplies a control signal for controlling the intermittent operation of the component control circuit; a low saturation detection circuit that outputs a control signal that puts the chromaticity component control circuit in a cutoff state; a control signal that puts the chromaticity component control circuit in a cutoff state when the luminance of the luminance component of the color image signal is lower than a predetermined luminance; a low-luminance detection circuit that outputs a high-frequency component of the luminance component of the color image signal, and a high-frequency detection circuit that outputs a control signal that shuts off the chromaticity component control circuit when the high-frequency component of the luminance component of the color image signal is smaller than a predetermined level. A color image signal processing circuit comprising at least one detection circuit among the detection circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10214588U JPH0224689U (en) | 1988-08-01 | 1988-08-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10214588U JPH0224689U (en) | 1988-08-01 | 1988-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0224689U true JPH0224689U (en) | 1990-02-19 |
Family
ID=31331780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10214588U Pending JPH0224689U (en) | 1988-08-01 | 1988-08-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0224689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0469270U (en) * | 1990-10-23 | 1992-06-18 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61103386A (en) * | 1984-10-26 | 1986-05-21 | Canon Inc | Imaging device |
| JPS61296885A (en) * | 1985-06-26 | 1986-12-27 | Hitachi Ltd | Color video camera signal processing circuit |
| JPS6235792A (en) * | 1985-08-09 | 1987-02-16 | Hitachi Ltd | White balance adjustment system |
-
1988
- 1988-08-01 JP JP10214588U patent/JPH0224689U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61103386A (en) * | 1984-10-26 | 1986-05-21 | Canon Inc | Imaging device |
| JPS61296885A (en) * | 1985-06-26 | 1986-12-27 | Hitachi Ltd | Color video camera signal processing circuit |
| JPS6235792A (en) * | 1985-08-09 | 1987-02-16 | Hitachi Ltd | White balance adjustment system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0469270U (en) * | 1990-10-23 | 1992-06-18 |
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