JPS62155590U - - Google Patents
Info
- Publication number
- JPS62155590U JPS62155590U JP2248886U JP2248886U JPS62155590U JP S62155590 U JPS62155590 U JP S62155590U JP 2248886 U JP2248886 U JP 2248886U JP 2248886 U JP2248886 U JP 2248886U JP S62155590 U JPS62155590 U JP S62155590U
- Authority
- JP
- Japan
- Prior art keywords
- correlation
- magnitude
- configuration
- predetermined value
- changed
- 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
- 238000000926 separation method Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
Description
第１図は本考案の一実施例のＹ／Ｃ分離装置の
構成を示すブロツク図、第２図は第１図のＹ／Ｃ
分離装置に供給されるデイジタル映像信号の二次
元格子データ配列を説明するための概念図、第３
図は上記実施例の作用を説明するための概念図、
第４図は第１図の水平相関検出・制御回路２０の
構成の一例を示すブロツク図、第５図は第１図の
垂直相関検出・制御回路３０の構成の一例を示す
ブロツク図、第６図乃至第８図は従来のＹ／Ｃ分
離装置の構成を示すブロツク図である。
１……分離対象の映像信号が供給される入力端
子、２……分離された色信号の出力端子、３……
分離された輝度信号の出力端子、１０……相関分
離用くし形フイルター、１１……色副搬送波周波
数に等しい中心周波数を有する帯域通過濾波回路
、１２……分離された色信号と映像信号から輝度
信号を作成する減算回路、２０……水平相関検出
・制御回路、３０……垂直相関検出・制御回路、
１３，１４……水平、垂直相関検出回路２０，３
０によつて制御され装置の構成を変更するスイツ
チ。
Fig. 1 is a block diagram showing the configuration of a Y/C separation device according to an embodiment of the present invention, and Fig. 2 shows a Y/C separation device of Fig. 1.
Conceptual diagram for explaining the two-dimensional lattice data array of the digital video signal supplied to the separation device, Part 3
The figure is a conceptual diagram for explaining the operation of the above embodiment,
4 is a block diagram showing an example of the configuration of the horizontal correlation detection/control circuit 20 in FIG. 1, FIG. 5 is a block diagram showing an example of the configuration of the vertical correlation detection/control circuit 30 in FIG. 1, and FIG. 8 are block diagrams showing the configuration of a conventional Y/C separation device. 1... Input terminal to which the video signal to be separated is supplied, 2... Output terminal for the separated color signal, 3...
Output terminal for the separated luminance signal, 10... Comb filter for correlation separation, 11... Bandpass filter circuit having a center frequency equal to the color subcarrier frequency, 12... Luminance from the separated color signal and video signal. Subtraction circuit for creating a signal, 20...Horizontal correlation detection/control circuit, 30...Vertical correlation detection/control circuit,
13, 14...Horizontal and vertical correlation detection circuits 20, 3
A switch controlled by 0 to change the configuration of the device.
Claims (1)
るくし形フイルターと、色副搬送波周波数に等し
い中心周波数を有する帯域通過濾波回路と、分離
対象の映像信号の水平方向と垂直方向の相関の大
きさのそれぞれを検出してその大きさに応じた前
記各回路間の接続変更により装置の構成を変更す
る水平相関検出・制御回路及び垂直相関検出・制
御回路と、これら相関検出・制御回路によつて制
御され装置の構成を変更するスイツチとを備え、 () 水平方向の相関の大きさが所定値以上の場
合には、垂直方向の相関の大きさのいかんにかか
わらず、帯域通過濾波回路を用いる周波数分離方
式となるように装置の構成を変更し、 () 水平方向の相関の大きさが所定値未満の場
合において、 垂直方向の相関の大きさも所定値未満のと
きには、くし形フイルタと帯域通過濾波回路が縦
列的に接続される縦列分離方式となるように装置
の構成を変更し、 垂直方向の相関の大きさが所定値以上のと
きには、くし形フイルターのみによる相関分離方
式となるように装置の構成を変更することを特徴
とするＹ／Ｃ分離装置。[Claims for Utility Model Registration] A comb filter having two 1-line delay circuits connected in series, a bandpass filter circuit having a center frequency equal to the color subcarrier frequency, and a horizontal direction of the video signal to be separated. a horizontal correlation detection/control circuit and a vertical correlation detection/control circuit for detecting the magnitude of the correlation in the vertical direction and changing the configuration of the device by changing the connection between the circuits according to the magnitude; () When the magnitude of the correlation in the horizontal direction is greater than a predetermined value, regardless of the magnitude of the correlation in the vertical direction, First, the configuration of the device is changed to a frequency separation method using a bandpass filter circuit, and () when the magnitude of the correlation in the horizontal direction is less than a predetermined value, the magnitude of the correlation in the vertical direction is also less than the predetermined value. Sometimes, the configuration of the device is changed to use a cascade separation method in which a comb filter and a bandpass filter circuit are connected in cascade, and when the magnitude of the vertical correlation is greater than a predetermined value, only the comb filter is used. A Y/C separation device characterized in that the configuration of the device is changed to adopt a correlation separation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2248886U JPH0346634Y2 (en) | 1986-02-19 | 1986-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2248886U JPH0346634Y2 (en) | 1986-02-19 | 1986-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62155590U true JPS62155590U (en) | 1987-10-02 |
| JPH0346634Y2 JPH0346634Y2 (en) | 1991-10-02 |
Family
ID=30819920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2248886U Expired JPH0346634Y2 (en) | 1986-02-19 | 1986-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0346634Y2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01162493A (en) * | 1987-12-18 | 1989-06-26 | Victor Co Of Japan Ltd | Adaptable luminance signal and color signal separation device |
| JPH01176188A (en) * | 1987-12-29 | 1989-07-12 | Victor Co Of Japan Ltd | Moving adaptive type luminance signal chrominance signal separator |
| JP2006157550A (en) * | 2004-11-30 | 2006-06-15 | Pioneer Electronic Corp | Y/c separation circuit |
| JP2006197609A (en) * | 2005-01-13 | 2006-07-27 | Samsung Electronics Co Ltd | Digital image signal processor and method for adaptative y/c separation |
-
1986
- 1986-02-19 JP JP2248886U patent/JPH0346634Y2/ja not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01162493A (en) * | 1987-12-18 | 1989-06-26 | Victor Co Of Japan Ltd | Adaptable luminance signal and color signal separation device |
| JPH01176188A (en) * | 1987-12-29 | 1989-07-12 | Victor Co Of Japan Ltd | Moving adaptive type luminance signal chrominance signal separator |
| JP2006157550A (en) * | 2004-11-30 | 2006-06-15 | Pioneer Electronic Corp | Y/c separation circuit |
| JP4681288B2 (en) * | 2004-11-30 | 2011-05-11 | パイオニア株式会社 | Y / C separation circuit |
| JP2006197609A (en) * | 2005-01-13 | 2006-07-27 | Samsung Electronics Co Ltd | Digital image signal processor and method for adaptative y/c separation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346634Y2 (en) | 1991-10-02 |
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