JPH0361786U - - Google Patents
Info
- Publication number
- JPH0361786U JPH0361786U JP12221789U JP12221789U JPH0361786U JP H0361786 U JPH0361786 U JP H0361786U JP 12221789 U JP12221789 U JP 12221789U JP 12221789 U JP12221789 U JP 12221789U JP H0361786 U JPH0361786 U JP H0361786U
- Authority
- JP
- Japan
- Prior art keywords
- ccd
- video signal
- phase difference
- signal
- detection means
- 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
Landscapes
- Filters That Use Time-Delay Elements (AREA)
- Processing Of Color Television Signals (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図は従来のクシ形
フイルタのブロツク図、第３図は第２図のクシ形
フイルタの各部の信号波形図である。
１……入力ＬＰＦ、２……ＣＣＰ、３……出力
ＬＰＦ、４……水平同期信号位相比較回路、５…
…バースト位相比較回路、６……バースト位置検
出回路、７……サンプルホールド回路、８，１０
……増幅器、１１……ＶＣＯ、１２……加算器、
１３……減算器。
FIG. 1 is a block diagram showing one embodiment of the comb filter according to this invention, FIG. 2 is a block diagram of a conventional comb filter, and FIG. 3 is a signal waveform diagram of each part of the comb filter shown in FIG. It is. 1...Input LPF, 2...CCP, 3...Output LPF, 4...Horizontal synchronization signal phase comparison circuit, 5...
...Burst phase comparison circuit, 6...Burst position detection circuit, 7...Sample hold circuit, 8, 10
...Amplifier, 11...VCO, 12...Adder,
13...Subtractor.
Claims (1)
ることにより所定時間遅延させるＣＣＤと、前記
ＣＣＤの前記クロツク周波数を制御する周波数制
御手段とを有するクシ形フイルタにおいて、 前記入力映像信号の水平同期信号と前記ＣＣＤ
により遅延された映像信号の水平同期信号との位
相差を出力する水平同期信号位相差検出手段と、 前記入力映像信号と前記ＣＣＤにより遅延され
た映像信号のバースト信号の位相差を出力するバ
ースト信号位相差検出手段と、 前記水平同期信号位相差検出手段の出力と前記
バースト信号位相差検出手段の出力とを加算する
加算手段とを備え、 前記加算手段の出力により前記周波数制御手段
を制御して前記入力映像信号と前記ＣＣＤにより
遅延された映像信号の水平同期信号を同相に、バ
ースト信号を逆相にすることを特徴とするクシ形
フイルタ。[Claims for Utility Model Registration] A comb-shaped filter comprising a CCD that delays an input video signal for a predetermined period of time by controlling a drive clock frequency, and a frequency control means that controls the clock frequency of the CCD, comprising: Horizontal synchronization signal of video signal and the CCD
horizontal synchronizing signal phase difference detection means for outputting a phase difference between a video signal delayed by the CCD and a horizontal synchronizing signal; and a burst signal for outputting a phase difference between the input video signal and a burst signal of the video signal delayed by the CCD. comprising: a phase difference detection means; and an addition means for adding the output of the horizontal synchronization signal phase difference detection means and the output of the burst signal phase difference detection means, and controlling the frequency control means by the output of the addition means. A comb-shaped filter characterized in that horizontal synchronizing signals of the input video signal and the video signal delayed by the CCD are made to be in phase, and burst signals are made to be in opposite phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12221789U JPH0361786U (en) | 1989-10-20 | 1989-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12221789U JPH0361786U (en) | 1989-10-20 | 1989-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0361786U true JPH0361786U (en) | 1991-06-17 |
Family
ID=31670229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12221789U Pending JPH0361786U (en) | 1989-10-20 | 1989-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0361786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008200370A (en) * | 2007-02-22 | 2008-09-04 | Daio Paper Corp | Sanitary tampon |
-
1989
- 1989-10-20 JP JP12221789U patent/JPH0361786U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008200370A (en) * | 2007-02-22 | 2008-09-04 | Daio Paper Corp | Sanitary tampon |
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