JPH01177676U - - Google Patents
Info
- Publication number
- JPH01177676U JPH01177676U JP7175188U JP7175188U JPH01177676U JP H01177676 U JPH01177676 U JP H01177676U JP 7175188 U JP7175188 U JP 7175188U JP 7175188 U JP7175188 U JP 7175188U JP H01177676 U JPH01177676 U JP H01177676U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- chromaticity
- delayed
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案によるＹ―Ｃ分離回路の一実施
例を示すブロツク図、第２図は第１図中の要部の
具体的回路例を示す回路図、第３図はカラーデイ
スプレイの一般的な回路構成を示すブロツク図、
第４図は従来Ｙ―Ｃ分離回路として使用されたく
し型フイルタの回路構成を示す回路図である。
１ａ―１……遅延手段（１Ｈ遅延手段）、１１
……フイルタ手段（３．５８ＭＨｚＢＰＦ）、１
２……検波手段（ＡＭ検波回路）、１４……減衰
手段（ＡＴＴ）。
Fig. 1 is a block diagram showing one embodiment of the Y-C separation circuit according to the present invention, Fig. 2 is a circuit diagram showing a specific circuit example of the main parts in Fig. 1, and Fig. 3 is a general color display. A block diagram showing the circuit configuration,
FIG. 4 is a circuit diagram showing the circuit configuration of a comb filter conventionally used as a Y-C separation circuit. 1a-1...delay means (1H delay means), 11
...Filter means (3.58MHzBPF), 1
2...Detection means (AM detection circuit), 14...Attenuation means (ATT).
Claims (1)
号と前記遅延手段により遅延する前の映像信号と
を加算及び減算することにより輝度信号と色度信
号に分離するＹ―Ｃ分離回路において、 前記輝度信号に含まれている色度信号成分を抽
出するフイルタ手段と、 該フイルタ手段の出力を検波する検波手段と、 前記検波手段の出力により前記色度信号のレベ
ルを変化させる減衰手段とを備え、 該減衰手段の出力を色度信号として出力する、 ことを特徴とするＹ―Ｃ分離回路。[Claims for Utility Model Registration] Y-C which separates into a luminance signal and a chromaticity signal by adding and subtracting a video signal delayed by one horizontal scanning period by a delay means and a video signal before being delayed by the delay means. In the separation circuit, a filter means for extracting a chromaticity signal component included in the luminance signal, a detection means for detecting the output of the filter means, and a level of the chromaticity signal is changed by the output of the detection means. A Y-C separation circuit comprising: attenuation means, and outputting the output of the attenuation means as a chromaticity signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7175188U JPH01177676U (en) | 1988-06-01 | 1988-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7175188U JPH01177676U (en) | 1988-06-01 | 1988-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01177676U true JPH01177676U (en) | 1989-12-19 |
Family
ID=31296941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7175188U Pending JPH01177676U (en) | 1988-06-01 | 1988-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01177676U (en) |
-
1988
- 1988-06-01 JP JP7175188U patent/JPH01177676U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS644493U (en) | ||
| JPH01177676U (en) | ||
| CA2016444A1 (en) | Luminance signal/color signal separating circuit and noise reduction circuit using a comb filter | |
| EP0364967A3 (en) | Luminance/chrominance signal separation circuit for pal color television signal | |
| JPS57164687A (en) | Double scanning image receiver | |
| JPS61191686U (en) | ||
| JPS6372986U (en) | ||
| JPS6323884U (en) | ||
| JPS63165982U (en) | ||
| JPS6390386U (en) | ||
| JPS6390385U (en) | ||
| JPH0377571U (en) | ||
| KR900011272A (en) | Automatic compensation circuit for Y signal delay time of PAL / SECAM system | |
| JPS6448594A (en) | Color video signal converting method | |
| JPS6310689U (en) | ||
| JPS6135484U (en) | Single-panel color video camera | |
| JPS62159084U (en) | ||
| JPS611983U (en) | Color decoder for video printing | |
| JPS647480U (en) | ||
| JPS6437184U (en) | ||
| JPS6454481U (en) | ||
| JPH0226878U (en) | ||
| JPS6423188U (en) | ||
| JPS61140684U (en) | ||
| JPH0348984U (en) |