JPH0316770U - - Google Patents
Info
- Publication number
- JPH0316770U JPH0316770U JP7679189U JP7679189U JPH0316770U JP H0316770 U JPH0316770 U JP H0316770U JP 7679189 U JP7679189 U JP 7679189U JP 7679189 U JP7679189 U JP 7679189U JP H0316770 U JPH0316770 U JP H0316770U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- video signal
- frequency
- correction device
- aperture correction
- 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
- 230000001934 delay Effects 0.000 claims 1
- 230000003111 delayed effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図ないし第４図は本考案の一実施例に係り
、第１図のＡはアパーチユア補正装置のブロツク
図、第１図のＢはアパーチユア補正装置における
可変遅延回路部のブロツク図、第２図は波形図、
第３図のＡは水平解像数とＶＣＯ駆動電圧との関
係を示す特性図、第３図のＢはＶＣＯの出力周波
数とＣＣＤの遅延時間との関係を示す特性図、第
４図は水平解像数の変化に伴う輪郭補正信号の波
形の変化を示す図である。また、第５図および第
６図は従来例に係り、第５図はアパーチユア補正
装置のブロツク図、第６図は輪郭補正信号生成の
説明図である。
１Ａ，１Ｂ……可変遅延回路部、３……マルチ
ミキサー、４……アパーチユアレベルコントロー
ラ、５……加算器、１１……時間固定遅延素子、
１２……ＣＣＤ（可変遅延素子）、１３……微分
回路、１４……デジタルカウンタ、１５……Ｄ／
Ａ変換回路、１６……ＶＣＯ、１７……水平同期
分離回路。
1 to 4 relate to one embodiment of the present invention, in which A in FIG. 1 is a block diagram of an aperture correction device, B in FIG. 1 is a block diagram of a variable delay circuit section in the aperture correction device, and FIG. The figure is a waveform diagram,
A in Figure 3 is a characteristic diagram showing the relationship between horizontal resolution and VCO drive voltage, B in Figure 3 is a characteristic diagram showing the relationship between VCO output frequency and CCD delay time, and Figure 4 is horizontal FIG. 6 is a diagram showing a change in the waveform of a contour correction signal as the number of resolutions changes. Further, FIGS. 5 and 6 relate to a conventional example, where FIG. 5 is a block diagram of an aperture correction device, and FIG. 6 is an explanatory diagram of contour correction signal generation. 1A, 1B... variable delay circuit section, 3... multi mixer, 4... aperture level controller, 5... adder, 11... time fixed delay element,
12...CCD (variable delay element), 13...differentiation circuit, 14...digital counter, 15...D/
A conversion circuit, 16...VCO, 17...horizontal synchronization separation circuit.
Claims (1)
に基づいて輪郭補正信号を生成するアパーチユア
補正装置において、 前記映像信号を遅延させる遅延回路部が、 映像信号の水平解像数をカウントする手段と、 そのカウント数に応じた周波数信号を発生する
手段と、 前記周波数信号の周波数の増・減変化に応じて
遅延時間を減・増する可変遅延素子、 とから構成されていることを特徴とするアパー
チユア補正装置。[Claims for Utility Model Registration] In an aperture correction device that generates a contour correction signal based on addition and subtraction between a video signal and a delayed signal of the video signal, a delay circuit unit that delays the video signal is configured to perform a horizontal solution of the video signal. It consists of means for counting the number of images, means for generating a frequency signal according to the counted number, and a variable delay element that reduces or increases the delay time in accordance with the increase or decrease in the frequency of the frequency signal. An aperture correction device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7679189U JPH0316770U (en) | 1989-06-29 | 1989-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7679189U JPH0316770U (en) | 1989-06-29 | 1989-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0316770U true JPH0316770U (en) | 1991-02-19 |
Family
ID=31618578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7679189U Pending JPH0316770U (en) | 1989-06-29 | 1989-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0316770U (en) |
-
1989
- 1989-06-29 JP JP7679189U patent/JPH0316770U/ja active Pending
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