JPS619986U - Color erasing circuit of chromakey signal generator - Google Patents
Color erasing circuit of chromakey signal generatorInfo
- Publication number
- JPS619986U JPS619986U JP9361584U JP9361584U JPS619986U JP S619986 U JPS619986 U JP S619986U JP 9361584 U JP9361584 U JP 9361584U JP 9361584 U JP9361584 U JP 9361584U JP S619986 U JPS619986 U JP S619986U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- signal generator
- video signal
- color erasing
- 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.)
- Granted
Links
Landscapes
- Processing Of Color Television Signals (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例を示すブロック図、第２図は
第１図主要部の波形図である。
図で１・・・・・・映像信号入力端子、２・・・・・・
ハードクロマキー信号入力端子、３・・・・・・キャン
セル信号入力端子、４・・・・・・制御信号入力端子、
５・・・・・・出力端子、１１・・・・・・Ｙ／Ｃ分離
回路、１２・・・・・・ゲインコントロール回路、１３
・・・・・・切替回路、１４・・・・・・加算回路、１
０１・・・・・・映像信号、１０２・・・・・・Ｙ信号
、１０３・・・・・・ハードクロマキー信号、１０４・
・・・・・クロマゲート映像信号、１０５・・・・・・
キャンセル信号、１０６・・・・・・色消去映像信号。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a waveform diagram of the main part of FIG. 1. In the diagram, 1...Video signal input terminal, 2...
Hard chromakey signal input terminal, 3... Cancellation signal input terminal, 4... Control signal input terminal,
5... Output terminal, 11... Y/C separation circuit, 12... Gain control circuit, 13
...Switching circuit, 14... Addition circuit, 1
01...Video signal, 102...Y signal, 103...Hard chromakey signal, 104...
...Chromagate video signal, 105...
Cancellation signal, 106...Color cancellation video signal.
Claims (1)
分離回路からの輝度信号と入力映像信号とを受けハード
クロマキー信号に応じて各信号のゲインを制御するゲイ
ンコントロール回路と、前記ゲインコントロール回路の
出力と入力映像信号とを切替える切替回路と、前記切替
回路の出力と色消去信号とを加える加算回路とを具備し
、前記加算回路から色消去された映像信号を得るクロマ
キー信号発生装置の色消去回路。a separation circuit that separates a luminance signal from an input video signal; a gain control circuit that receives the luminance signal from the separation circuit and the input video signal and controls the gain of each signal according to a hard chroma key signal; Color erasure of a chroma key signal generating device, comprising a switching circuit that switches between an output and an input video signal, and an addition circuit that adds the output of the switching circuit and a color erasure signal, and obtains a color-erased video signal from the addition circuit. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9361584U JPS619986U (en) | 1984-06-22 | 1984-06-22 | Color erasing circuit of chromakey signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9361584U JPS619986U (en) | 1984-06-22 | 1984-06-22 | Color erasing circuit of chromakey signal generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS619986U true JPS619986U (en) | 1986-01-21 |
| JPH0332147Y2 JPH0332147Y2 (en) | 1991-07-08 |
Family
ID=30651451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9361584U Granted JPS619986U (en) | 1984-06-22 | 1984-06-22 | Color erasing circuit of chromakey signal generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS619986U (en) |
-
1984
- 1984-06-22 JP JP9361584U patent/JPS619986U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0332147Y2 (en) | 1991-07-08 |
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