JPH0213362U - - Google Patents
Info
- Publication number
- JPH0213362U JPH0213362U JP9067388U JP9067388U JPH0213362U JP H0213362 U JPH0213362 U JP H0213362U JP 9067388 U JP9067388 U JP 9067388U JP 9067388 U JP9067388 U JP 9067388U JP H0213362 U JPH0213362 U JP H0213362U
- Authority
- JP
- Japan
- Prior art keywords
- differential output
- magnitude
- luminance
- image
- emphasizes
- 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
- Details Of Television Scanning (AREA)
Description
第１図は本考案を実施した画質補正回路の回路
図であり、第２図はその各部の信号波形等を示す
図である。
２……微分回路、３……増幅・波形整形回路、
４……平均ビーム電流検出回路、６……速度変調
コイル。
FIG. 1 is a circuit diagram of an image quality correction circuit embodying the present invention, and FIG. 2 is a diagram showing signal waveforms of each part thereof. 2...Differential circuit, 3...Amplification/waveform shaping circuit,
4... Average beam current detection circuit, 6... Velocity modulation coil.
Claims (1)
微分出力をブラウン管に装着した速度変調コイル
に印加することにより電子ビームの水平走査速度
を変調して画像の輪郭を強調するようにしたテレ
ビジヨン受像機の画質補正回路において、前記微
分出力の大きさを平均映像輝度に応じて該輝度が
高いとき大きくなすように可変制御する手段を設
けたことを特徴とする画質補正回路。 A television receiver that emphasizes the contours of an image by modulating the horizontal scanning speed of the electron beam by applying the differential output obtained by differentiating the brightness change portion of the video signal to a speed modulation coil attached to a cathode ray tube. 2. The image quality correction circuit according to claim 1, further comprising means for variably controlling the magnitude of the differential output so as to increase the magnitude of the differential output according to the average image luminance when the luminance is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9067388U JPH0213362U (en) | 1988-07-08 | 1988-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9067388U JPH0213362U (en) | 1988-07-08 | 1988-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0213362U true JPH0213362U (en) | 1990-01-26 |
Family
ID=31315187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9067388U Pending JPH0213362U (en) | 1988-07-08 | 1988-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0213362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000010324A1 (en) * | 1998-08-14 | 2000-02-24 | Sony Corporation | Scanning speed modulating circuit for picture display |
-
1988
- 1988-07-08 JP JP9067388U patent/JPH0213362U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000010324A1 (en) * | 1998-08-14 | 2000-02-24 | Sony Corporation | Scanning speed modulating circuit for picture display |
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