JPH0361785U - - Google Patents
Info
- Publication number
- JPH0361785U JPH0361785U JP12221689U JP12221689U JPH0361785U JP H0361785 U JPH0361785 U JP H0361785U JP 12221689 U JP12221689 U JP 12221689U JP 12221689 U JP12221689 U JP 12221689U JP H0361785 U JPH0361785 U JP H0361785U
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- signal
- input video
- phase
- burst position
- 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 2
- 230000003111 delayed effect Effects 0.000 claims 2
- 238000005070 sampling Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 1
Landscapes
- Processing Of Color Television Signals (AREA)
- Filters That Use Time-Delay Elements (AREA)
Description
第１図は、この考案によるクシ形フイルタの一
実施例を示すブロツク図、第２図は第１図の実施
例における各部の信号波形図、第３図は、この考
案の他の実施例を示すブロツク図、第４図は従来
のクシ形フイルタのブロツク図である。
１……遅延線、２……移相回路、３……バース
ト位置検出回路、４，８……位相比較回路、５…
…サンプルホールド回路、６……加算器、７……
減算器。
Fig. 1 is a block diagram showing one embodiment of the comb-shaped filter according to this invention, Fig. 2 is a signal waveform diagram of each part in the embodiment of Fig. 1, and Fig. 3 shows another embodiment of this invention. FIG. 4 is a block diagram of a conventional comb filter. DESCRIPTION OF SYMBOLS 1... Delay line, 2... Phase shift circuit, 3... Burst position detection circuit, 4, 8... Phase comparison circuit, 5...
...sample hold circuit, 6...adder, 7...
Subtractor.
Claims (1)
遅延する遅延手段と、前記入力映像信号と前記遅
延手段により遅延された信号との加算信号および
減算信号をそれぞれ出力する加算手段および減算
手段とを有するクシ形フイルタにおいて、 前記入力映像信号と前記遅延手段により遅延さ
れた信号との位相差を検出する位相比較手段と、
前記入力映像信号のバースト位置を検出するバー
スト位置検出手段と、前記位相比較手段の出力信
号を前記バースト位置のタイミングでサンプリン
グしてホールドするサンプルホールド手段と、前
記サンプルホールド手段の出力信号に応じて前記
入力映像信号に対応する映像信号を移相する移相
手段とを備えて成ることを特徴とするクシ形フイ
ルタ。[Claims for Utility Model Registration] Delay means for delaying an input video signal by a time corresponding to one horizontal period, and outputting an addition signal and a subtraction signal of the input video signal and the signal delayed by the delay means, respectively. A comb-shaped filter having addition means and subtraction means, comprising: phase comparison means for detecting a phase difference between the input video signal and the signal delayed by the delay means;
burst position detection means for detecting the burst position of the input video signal; sample hold means for sampling and holding the output signal of the phase comparison means at the timing of the burst position; A comb-shaped filter comprising: phase shifting means for shifting the phase of a video signal corresponding to the input video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12221689U JPH0361785U (en) | 1989-10-20 | 1989-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12221689U JPH0361785U (en) | 1989-10-20 | 1989-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0361785U true JPH0361785U (en) | 1991-06-17 |
Family
ID=31670228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12221689U Pending JPH0361785U (en) | 1989-10-20 | 1989-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0361785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006067879A1 (en) * | 2004-12-21 | 2006-06-29 | Mitsubishi Denki Kabushiki Kaisha | Video signal processing apparatus |
-
1989
- 1989-10-20 JP JP12221689U patent/JPH0361785U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006067879A1 (en) * | 2004-12-21 | 2006-06-29 | Mitsubishi Denki Kabushiki Kaisha | Video signal processing apparatus |
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