JPS63108285U - - Google Patents
Info
- Publication number
- JPS63108285U JPS63108285U JP19937086U JP19937086U JPS63108285U JP S63108285 U JPS63108285 U JP S63108285U JP 19937086 U JP19937086 U JP 19937086U JP 19937086 U JP19937086 U JP 19937086U JP S63108285 U JPS63108285 U JP S63108285U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- value
- color
- video signal
- separation 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
- 238000000926 separation method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の一実施例に係わるＹ／Ｃ分離
回路の構成を示すブロツク図、第２図は第１図の
Ｙ／Ｃ分離回路の動作を説明するための波形図、
第３図は本考案の他の実施例に係わるＹ／Ｃ分離
回路の構成を示すブロツク図、第４図は第１図と
第３図中の最大値検出回路３の構成の一例を示す
部分ブロツク図である。
１……ビデオ信号の入力端子、２ａ〜２ｄ……
遅延フリツプ・フロツプ、３……最大値検出回路
、３ａ……比較部、３ｂ……比較結果解読部、４
……最小値検出回路、５，６……セレクタ、７…
…平均値作成回路、８，８′……差分作成回路、
９……輝度信号の出力端子、１０……搬送色信号
の出力端子。
FIG. 1 is a block diagram showing the configuration of a Y/C separation circuit according to an embodiment of the present invention, and FIG. 2 is a waveform diagram for explaining the operation of the Y/C separation circuit shown in FIG. 1.
FIG. 3 is a block diagram showing the configuration of a Y/C separation circuit according to another embodiment of the present invention, and FIG. 4 is a portion showing an example of the configuration of the maximum value detection circuit 3 in FIGS. 1 and 3. It is a block diagram. 1...Video signal input terminal, 2a to 2d...
Delay flip-flop, 3... Maximum value detection circuit, 3a... Comparison section, 3b... Comparison result decoding section, 4
...Minimum value detection circuit, 5, 6...Selector, 7...
...Average value creation circuit, 8,8'...Difference creation circuit,
9... Output terminal for luminance signal, 10... Output terminal for carrier color signal.
Claims (1)
号を構成するカラーテレビジヨン方式のＹ／Ｃ分
離回路であつて、 前記ビデオ信号の所定期間内の最大値と最小値
を検出し、これら検出された最大値と最小値の平
均値を作成して輝度信号として出力し、 この輝度信号と前記ビデオ信号との差分又は前
記検出された最大値と最小値との差分を作成して
色信号として出力する手段を備えたことを特徴と
するカラーテレビジヨン信号のＹ／Ｃ分離回路。[Claims for Utility Model Registration] A Y/C separation circuit for a color television system that configures a video signal by multiplexing a luminance signal and a carrier chrominance signal, wherein the maximum and minimum values of the video signal within a predetermined period are detect the value, create an average value of these detected maximum values and minimum values and output it as a luminance signal, and calculate the difference between this luminance signal and the video signal or the difference between the detected maximum value and minimum value. 1. A Y/C separation circuit for a color television signal, comprising means for creating and outputting a color signal as a color signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19937086U JPS63108285U (en) | 1986-12-29 | 1986-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19937086U JPS63108285U (en) | 1986-12-29 | 1986-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63108285U true JPS63108285U (en) | 1988-07-12 |
Family
ID=31160928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19937086U Pending JPS63108285U (en) | 1986-12-29 | 1986-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63108285U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05244462A (en) * | 1992-02-28 | 1993-09-21 | Matsushita Electric Ind Co Ltd | Video signal processor |
| JPH05316392A (en) * | 1992-05-14 | 1993-11-26 | Matsushita Electric Ind Co Ltd | Contour correction device |
| KR100287894B1 (en) * | 1998-03-05 | 2001-05-02 | 김영환 | Differentiator of comb filter |
| KR100631512B1 (en) | 2004-08-10 | 2006-10-09 | 엘지전자 주식회사 | Apparatus and method for color transition improvement by using nonlinear laplacian |
-
1986
- 1986-12-29 JP JP19937086U patent/JPS63108285U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05244462A (en) * | 1992-02-28 | 1993-09-21 | Matsushita Electric Ind Co Ltd | Video signal processor |
| JPH05316392A (en) * | 1992-05-14 | 1993-11-26 | Matsushita Electric Ind Co Ltd | Contour correction device |
| KR100287894B1 (en) * | 1998-03-05 | 2001-05-02 | 김영환 | Differentiator of comb filter |
| KR100631512B1 (en) | 2004-08-10 | 2006-10-09 | 엘지전자 주식회사 | Apparatus and method for color transition improvement by using nonlinear laplacian |
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