JPS5813094A - Chrominance signal controlling circuit - Google Patents
Chrominance signal controlling circuitInfo
- Publication number
- JPS5813094A JPS5813094A JP56110852A JP11085281A JPS5813094A JP S5813094 A JPS5813094 A JP S5813094A JP 56110852 A JP56110852 A JP 56110852A JP 11085281 A JP11085281 A JP 11085281A JP S5813094 A JPS5813094 A JP S5813094A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- color
- circuit
- controlling circuit
- control circuit
- 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
- 239000002131 composite material Substances 0.000 abstract description 6
- 241000282414 Homo sapiens Species 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、垂直帰線期間に肌色制御回路の動作を停止さ
せるようにした事を特徴とする色信号制御回路に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color signal control circuit characterized in that the operation of the skin color control circuit is stopped during a vertical retrace period.
従来の肌色制御回路は、−直帰線期間にも動作を継続す
るように構成されている。この為に１垂直帰線期間に挿
入されている種々のパイロットａ号も肌色制御回路Ｏ制
御作用を受ける。The conventional skin color control circuit is configured to continue operating even during the negative retrace period. For this reason, the various pilots a inserted in one vertical retrace period are also subjected to the control action of the skin color control circuit O.
このような条件下で上記肌色制御回路と並行して、働直
帰線期１１に挿入されているパイロット信号を制御信号
として用いる自動色信号制御回路（以下ＶＩＲＩ回路と
略す）を付−すると、ｖＩＲ回路が前記肌色制御回路の
影響を受ける。これを防止するために、従来ａ ＶＩＢ
回路回路時は、前記肌色制御回路の動作を強制的に停止
させるようにしていた。Under such conditions, if an automatic color signal control circuit (hereinafter abbreviated as VIRI circuit) is installed in parallel with the skin color control circuit, which uses the pilot signal inserted in the direct retrace line period 11 as a control signal, The vIR circuit is influenced by the skin color control circuit. To prevent this, conventional a VIB
When the circuit is on, the operation of the skin color control circuit is forcibly stopped.
このようにすると、受信機で再生されるｉｉ＊はＶＩＲ
Ｉ回路による色制御作用をうけ、送信局から受信機間の
色相及び色飽和度の歪み社補正されるが、送信局におけ
る°カメラの相違及び調整工程に訃ける歪みは補正され
ない。したがって、この歪みによシ、肌色が番組間及び
チャンネル間で異なる恐れが生ずるという欠点があった
。In this way, the ii* played on the receiver is VIR
Under the color control effect of the I circuit, distortions in hue and color saturation between the transmitting station and the receiver are corrected, but distortions due to camera differences and adjustment processes at the transmitting station are not corrected. Therefore, this distortion has the disadvantage that skin tones may vary between programs and between channels.
本発明の目的社、上記した従来技術の欠点をなくシ、ｖ
ＩＲｎ路動作中動作中ＩＲａ路の動作に影響を与える事
なく、カメラ及びチャンネル間の肌色の色相及び色飽和
度を補正する肌色制御回路を動作させることのできる色
信号制御回路を提供するにある。The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art.
To provide a color signal control circuit capable of operating a skin color control circuit that corrects the hue and color saturation of skin color between cameras and channels without affecting the operation of the IRa path during operation of the IRn path. .
本発明の特徴は、前記従来技術の欠点を解決するために
、肌色制御回路の動作を垂直帰線期間中は停止するよう
ｋして垂直帰線期間に挿入されているパイロット信号が
同肌色制御回路の影響を受け々いようにした事である。A feature of the present invention is that, in order to solve the drawbacks of the prior art, the operation of the skin color control circuit is stopped during the vertical retrace period, and the pilot signal inserted in the vertical retrace period is used to control the same skin color. This is to avoid being influenced by the circuit.
以下、実施例を用いて本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail using Examples.
第１図は本発明による一実施例のブロック図を示す。ま
た、第２図は第１図の主要部の波形図並びにその動作の
説明図であシ、第２図−）は複合映像信号の波形図、同
図（ｂ） 、 （ｅ）はそれぞれ肌色制御回路、スイッ
チング回路の動作の説明図、同図（６）はブランキング
信号の波形図を示す。な訃、同図仏）において、期間’
１＋ａｌはそれぞれ第１フイールド、第２フィールド期
間、期ｆ１５ｂは垂直帰線４期間ならびに肌色制御回路
の動作停止期間を示す。FIG. 1 shows a block diagram of one embodiment according to the invention. In addition, Fig. 2 is a waveform diagram of the main part of Fig. 1 and an explanatory diagram of its operation. An explanatory diagram of the operation of the control circuit and the switching circuit, and (6) in the same figure shows a waveform diagram of the blanking signal. In the period'
1+al indicates the first field period and the second field period, respectively, and period f15b indicates the vertical retrace 4 period and the operation stop period of the skin color control circuit.
第１図において、複合色信号５＃′ｉ、図示されていな
い映像中間周波増１１回路を経て検波された複合映像信
号（第２図＆）から、帯域フィルタにより、抽出される
。抽出された複合色信号５は色信号制御回路１に入力さ
れ、この色信号処理回路１内で、増幅復調されてＲ−Ｙ
、 Ｇ−Ｙ 、 Ｂ−Ｙの各色差信号となって出力さ
れる。この出力され九Ｒ−Ｙ 。In FIG. 1, a composite color signal 5#'i is extracted by a bandpass filter from a composite video signal (FIG. 2 &) detected through a video intermediate frequency intensifier 11 circuit (not shown). The extracted composite color signal 5 is input to the color signal control circuit 1, and within this color signal processing circuit 1, it is amplified and demodulated into R-Y
, G-Y, and B-Y color difference signals are output. This output is nine R-Y.
Ｂ−Ｙの色差信号の、垂直帰一期間６１ｅＨ目に挿入さ
れている色基準信号（以下ＶＩＲ信号と略す）部分が、
ｖＩＲ自動色信号制御回路２０制御信号として用いられ
る。ＶＩＲ自動色信号制御［１ｍ１２からは色飽和度制
御信号７と色相制御信号８が出力され、諌出力信号によ
り、色信号処理回路１内で、色信号の色飽和度及び色相
が制御される。The color reference signal (hereinafter abbreviated as VIR signal) part of the B-Y color difference signal inserted in the vertical return period 61eH is as follows:
vIR is used as an automatic color signal control circuit 20 control signal. VIR automatic color signal control [1m12 outputs a color saturation control signal 7 and a hue control signal 8, and the color saturation and hue of the color signal are controlled in the color signal processing circuit 1 by the output signal.
さらに上記Ｒ−Ｙ 、 Ｂ−Ｙ色差信号は肌色制御回路
３に入力され、肌色制御回路３からＯ色飽和度制御信４
＃９−と色相制御信号１０によｐ１同様に色信号処理回
路１内で色信号の色飽和度及び色相が制御
御される。肌色制御回路３はスイッチング回路４によ〉
、その動作期間を制御される。すなわち、スイッチング
回路４に偏向回路から送られてきたブランキング信号６
が入力すると、スイッチング回路４はブランキング信号
が入力している期間Ｃの間のみ動作する。肌色制御回路
は、スイッチング回路４からのスイッチング信号１１に
よシ、スイッチング回路４が動作している期間、すなわ
ち垂直帰線期間すの間のみその動作を停止する。なお、
極性中インピーダンス関係等が温良されれｄ１スイッチ
ング回路を介さずにブランキング信号６で肌色制御回路
３の動作を直接停止させるようにしてもよい。Further, the R-Y and B-Y color difference signals are input to the skin color control circuit 3, and the O color saturation control signal 4 is inputted from the skin color control circuit 3.
Similar to p1, the color saturation and hue of the color signal are controlled within the color signal processing circuit 1 by #9- and the hue control signal 10. The skin color control circuit 3 is controlled by the switching circuit 4.
, its operating period is controlled. That is, the blanking signal 6 sent from the deflection circuit to the switching circuit 4
When the blanking signal is input, the switching circuit 4 operates only during the period C during which the blanking signal is input. In response to the switching signal 11 from the switching circuit 4, the skin color control circuit stops its operation only during the period in which the switching circuit 4 is operating, that is, during the vertical retrace period. In addition,
It is also possible to directly stop the operation of the skin color control circuit 3 by using the blanking signal 6 without going through the d1 switching circuit when the impedance relationship during polarity is maintained.
本実施例においては、肌色制御回路は、第２図に示すよ
うに、垂直帰線期間のみ動作が停止するので、ＶＩＲ自
動色信号制御回路の動作に影響を与えることがない。し
たがって、肌色制御回路とＶＩＲ回路の両方を動作させ
ることによ、９、ＶＩＲ制御回路で補正されない肌色の
色飽和度及び色相歪みを同時に補正することが可能でお
る。In this embodiment, as shown in FIG. 2, the skin color control circuit stops operating only during the vertical retrace period, so that it does not affect the operation of the VIR automatic color signal control circuit. Therefore, by operating both the skin color control circuit and the VIR circuit, it is possible to simultaneously correct the color saturation and hue distortion of the skin color that are not corrected by the 9. VIR control circuit.
以上のように、本発明によれば、ｖＩＢ自動自動６芳信
御閂路の動作中にもＶＩＲ回路の動作に影響を与える事
なく、肌色制御回路を動作させることができる。したが
りて、ＶＩＲ制御回路で補正されない送信局側で生じる
肌色の色飽和度及び色相の歪みをＶＩＲ制御回路の動作
中にも補正する事が可能となシ、常に安定した再生画像
を再現すること′ができる。As described above, according to the present invention, the skin color control circuit can be operated without affecting the operation of the VIR circuit even during the operation of the vIB automatic 6-direction control circuit. Therefore, it is possible to correct the color saturation of skin color and hue distortion that occur on the transmitting station side, which are not corrected by the VIR control circuit, even while the VIR control circuit is operating, and always reproduce a stable reproduced image. be able to.
第１図は、本発明の一実施例のブロック図、纂２図社第
１図中の肌色制御回路の動作説明図である。
ｌ・・・色信号制御回路、２・・・ＶＩＲ自動色信号制
御回路、３・・・肌色制御回路、４・・・スイッチング
回路、５・・・複合色信号、６・・・ブランキング信号
、７．９−・・色飽和度制御信号、６．ｉｏ・・・色相
制御信号、１１・・・スイッチング信号。
代鳳人弁理士 平 木 道 人FIG. 1 is a block diagram of an embodiment of the present invention, and is an explanatory diagram of the operation of the skin color control circuit in FIG. l... Color signal control circuit, 2... VIR automatic color signal control circuit, 3... Flesh color control circuit, 4... Switching circuit, 5... Composite color signal, 6... Blanking signal , 7.9--color saturation control signal, 6. io... Hue control signal, 11... Switching signal. Daihoto Patent Attorney Michihito Hiragi
Claims (1)
る色基準信号を用いて、受信機の色飽和度及び色相を自
動的に制御するカラー；レビ受信機の自動色信号制御回
路において、該自動色（１４＃制御回路と並列に、別回
路よ）なる肌色の色飽和度及び色相歪みを補正する肌色
制御回路を設け、諌肌色制御回路の動作な垂直帰線期間
のみ停止させるようにしたことを特徴とする色信号制御
回路。0) Color that automatically controls the color saturation and hue of the receiver using the color reference signal inserted at the 19th H of the vertical retrace period of the transmitted signal; in the automatic color signal control circuit of the TV receiver. , a skin color control circuit for correcting the color saturation and hue distortion of the skin color of the automatic color (in parallel with the 14# control circuit, a separate circuit) is provided, and the skin color control circuit is stopped only during the vertical retrace period during which it is in operation. A color signal control circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56110852A JPS5813094A (en) | 1981-07-17 | 1981-07-17 | Chrominance signal controlling circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56110852A JPS5813094A (en) | 1981-07-17 | 1981-07-17 | Chrominance signal controlling circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5813094A true JPS5813094A (en) | 1983-01-25 |
Family
ID=14546289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56110852A Pending JPS5813094A (en) | 1981-07-17 | 1981-07-17 | Chrominance signal controlling circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813094A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62136994A (en) * | 1985-12-11 | 1987-06-19 | Hitachi Ltd | Encoder circuit |
| US4792343A (en) * | 1985-08-12 | 1988-12-20 | Allied Colloids Limited | Dispersing agents |
| US5488429A (en) * | 1992-01-13 | 1996-01-30 | Mitsubishi Denki Kabushiki Kaisha | Video signal processor for detecting flesh tones in am image |
| US5638136A (en) * | 1992-01-13 | 1997-06-10 | Mitsubishi Denki Kabushiki Kaisha | Method and apparatus for detecting flesh tones in an image |
-
1981
- 1981-07-17 JP JP56110852A patent/JPS5813094A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792343A (en) * | 1985-08-12 | 1988-12-20 | Allied Colloids Limited | Dispersing agents |
| JPS62136994A (en) * | 1985-12-11 | 1987-06-19 | Hitachi Ltd | Encoder circuit |
| US5488429A (en) * | 1992-01-13 | 1996-01-30 | Mitsubishi Denki Kabushiki Kaisha | Video signal processor for detecting flesh tones in am image |
| US5561474A (en) * | 1992-01-13 | 1996-10-01 | Mitsubishi Denki Kabushiki Kaisha | Superimposing circuit performing superimposing based on a color saturation level determined from color difference signals |
| US5638136A (en) * | 1992-01-13 | 1997-06-10 | Mitsubishi Denki Kabushiki Kaisha | Method and apparatus for detecting flesh tones in an image |
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