JPS61168763U - - Google Patents
Info
- Publication number
- JPS61168763U JPS61168763U JP5073385U JP5073385U JPS61168763U JP S61168763 U JPS61168763 U JP S61168763U JP 5073385 U JP5073385 U JP 5073385U JP 5073385 U JP5073385 U JP 5073385U JP S61168763 U JPS61168763 U JP S61168763U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- vertical
- correction
- horizontal
- correction wave
- 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
- 238000003705 background correction Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図は本考案の一実施例のシエーデイング補
正回路の構成を示すブロツク図、第２図は第１図
の垂直補正波発生回路１１ａの構成の一例を示す
ブロツク図、第３図は第２図の回路の動作の一例
を説明するための波形図、第４図は第１図の垂直
補正波発生回路１１ａの他の構成例を示すブロツ
ク図、第５図は従来のシエーデイング補正回路の
構成を示すブロツク図である。
１１ａ…垂直補正波発生回路、１１ｂ…垂直補
正量調整回路、１２ａ…水平補正波発生回路、１
２ｂ…水平補正量調整回路、１３…係数回路、１
４…保持回路、１５…合成回路、１６…係数回路
、２０…鋸波発生回路、２１…波形変換回路、２
２…アドレスカウンタ、２３…補正波発生ＲＯＭ
。
FIG. 1 is a block diagram showing the configuration of a shading correction circuit according to an embodiment of the present invention, FIG. 2 is a block diagram showing an example of the configuration of the vertical correction wave generating circuit 11a of FIG. 1, and FIG. 4 is a block diagram showing another configuration example of the vertical correction wave generation circuit 11a of FIG. 1, and FIG. 5 is a configuration of a conventional shading correction circuit. FIG. 11a...Vertical correction wave generation circuit, 11b...Vertical correction amount adjustment circuit, 12a...Horizontal correction wave generation circuit, 1
2b...Horizontal correction amount adjustment circuit, 13...Coefficient circuit, 1
4...Holding circuit, 15...Composition circuit, 16...Coefficient circuit, 20...Sawtooth wave generation circuit, 21...Waveform conversion circuit, 2
2...Address counter, 23...Correction wave generation ROM
.
Claims (1)
れる画像信号に対し、垂直方向及び水平方向のシ
エーデイング補正を行うシエーデイング補正回路
において、 垂直方向及び水平方向のシエーデイング補正波
のそれぞれを発生する垂直補正波発生回路及び水
平補正波発生回路と、 水平ブランキング期間内に垂直補正波に所定の
係数を乗算すると共に、水平走査期間内には水平
補正波に所定の係数を乗算する係数回路と、 この係数回路から出力された垂直補正波を１水
平走査期間にわたつて保持する保持回路とを備え
たことを特徴とするシエーデイング補正回路。[Claim for Utility Model Registration] In a shading correction circuit that performs shading correction in the vertical and horizontal directions on an image signal supplied to a display device that performs vertical and horizontal scanning, a shading correction wave in the vertical and horizontal directions is provided. A vertical correction wave generating circuit and a horizontal correction wave generating circuit each generate a vertical correction wave and a horizontal correction wave generating circuit. A shading correction circuit comprising: a coefficient circuit for multiplication; and a holding circuit for holding a vertical correction wave output from the coefficient circuit for one horizontal scanning period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5073385U JPS61168763U (en) | 1985-04-05 | 1985-04-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5073385U JPS61168763U (en) | 1985-04-05 | 1985-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61168763U true JPS61168763U (en) | 1986-10-20 |
Family
ID=30569144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5073385U Pending JPS61168763U (en) | 1985-04-05 | 1985-04-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61168763U (en) |
-
1985
- 1985-04-05 JP JP5073385U patent/JPS61168763U/ja active Pending