JPH0417942U - - Google Patents
Info
- Publication number
- JPH0417942U JPH0417942U JP5870790U JP5870790U JPH0417942U JP H0417942 U JPH0417942 U JP H0417942U JP 5870790 U JP5870790 U JP 5870790U JP 5870790 U JP5870790 U JP 5870790U JP H0417942 U JPH0417942 U JP H0417942U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- outputs
- image signal
- correction
- counter circuit
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例のブロツク図、第２
図は本実施例の画信号修正回路のブロツク図、第
３図は本実施例の動作を説明するためのタイミン
グ図である。
１……画信号修正回路、２……論理積回路、３
，４，５……カウンタ回路、６……除算回路、７
……乗算回路、８……補正係数ＲＯＭ、９……バ
ツフア回路、１０，１１，１２，１３……モノマ
ルチ回路、１４，１５，１６，１７……論理和回
路、１８……セレクタ回路。
Figure 1 is a block diagram of one embodiment of the present invention;
The figure is a block diagram of the image signal correction circuit of this embodiment, and FIG. 3 is a timing diagram for explaining the operation of this embodiment. 1... Image signal correction circuit, 2... AND circuit, 3
, 4, 5... Counter circuit, 6... Division circuit, 7
... Multiplication circuit, 8 ... Correction coefficient ROM, 9 ... Buffer circuit, 10, 11, 12, 13 ... Monomulti circuit, 14, 15, 16, 17 ... OR circuit, 18 ... Selector circuit.
Claims (1)
信号データにパルス幅補正を行つて出力する画信
号修正回路と、画素クロツクと黒の前記画信号デ
ータとの論理積を出力する論理積回路と、設定さ
れた主走査方向と副走査方向との領域内の画素数
を前記画素クロツクで計数し出力する第１のカウ
ンタ回路と、前記領域内の黒画素数を計数し出力
する第２のカウンタ回路と、前記指定領域内に含
まれる白画素と黒画素の変化点の数を計数し出力
する第３のカウンタ回路と、前記第２のカウンタ
回路の計数出力を前記第１のカウンタ回路の計数
出力で除算する除算回路と、前記指定信号および
前記第３のカウンタ回路の計数出力に従つてあら
かじめ設定された補正計数と前記除算回路からの
出力とを乗算する乗算回路とを有することを特徴
とする画素比率測定装置。 ２ 前記画信号修正回路において前記画信号デー
タのパルス幅を補正する異なる複数の補正回路を
前記指定信号によつて選択することを特徴とする
請求項１記載の画素比率測定装置。[Claims for Utility Model Registration] 1. An image signal correction circuit that performs pulse width correction on input image signal data according to a pulse width correction amount designation signal and outputs the result, and a pixel clock and the black image signal data. an AND circuit that outputs an AND; a first counter circuit that counts and outputs the number of pixels in a set area in the main scanning direction and sub-scanning direction using the pixel clock; a second counter circuit that counts and outputs the number of change points between white pixels and black pixels included in the specified area, and a third counter circuit that counts and outputs the number of changing points between white pixels and black pixels included in the designated area; and a count output of the second counter circuit. a division circuit that divides by the count output of the first counter circuit, and the output from the division circuit is multiplied by a correction count set in advance according to the specified signal and the count output of the third counter circuit. A pixel ratio measuring device comprising: a multiplication circuit. 2. The pixel ratio measuring device according to claim 1, wherein a plurality of different correction circuits for correcting the pulse width of the image signal data in the image signal correction circuit are selected by the designation signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5870790U JP2530947Y2 (en) | 1990-06-01 | 1990-06-01 | Pixel ratio measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5870790U JP2530947Y2 (en) | 1990-06-01 | 1990-06-01 | Pixel ratio measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0417942U true JPH0417942U (en) | 1992-02-14 |
| JP2530947Y2 JP2530947Y2 (en) | 1997-04-02 |
Family
ID=31584564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5870790U Expired - Lifetime JP2530947Y2 (en) | 1990-06-01 | 1990-06-01 | Pixel ratio measurement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2530947Y2 (en) |
-
1990
- 1990-06-01 JP JP5870790U patent/JP2530947Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2530947Y2 (en) | 1997-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2632876B2 (en) | Image processing device | |
| CA2063472A1 (en) | Method of resolution conversion | |
| SU1304762A3 (en) | Device for monitoring and correcting colour picture signal on colour picture monitor | |
| GB2310336A (en) | Scanner | |
| US6882365B1 (en) | Direction-sensitive correction method and system for data including abrupt intensity gradients | |
| JPH10313464A (en) | Color filter array and its hue interpolating device | |
| US20030234879A1 (en) | Method and apparatus for color non-uniformity correction in a digital camera | |
| EP0185487B1 (en) | Electronic image scanner with colour matrix image enhancement | |
| JPH0417942U (en) | ||
| JPH02109208U (en) | ||
| JPS63313967A (en) | Dot density converter | |
| JPH073727Y2 (en) | Picture signal correction device | |
| JPH0649012Y2 (en) | Picture signal correction device | |
| SU594600A1 (en) | Digital aperture corrector | |
| JPS63146895U (en) | ||
| JPS63105572A (en) | Resolution conversion device | |
| JP2602355B2 (en) | Drive circuit for solid-state image sensor | |
| JPS5654164A (en) | Generator for video signal | |
| JP2505170B2 (en) | Image reading device | |
| JPS6043712B2 (en) | Video signal synthesis method using two-dimensional charge transfer device | |
| JPS6031385A (en) | Single board color camera | |
| JPH0398564U (en) | ||
| JPH0251459U (en) | ||
| JPS62241467A (en) | Color image sensor | |
| JPH0454069A (en) | Shading correction circuit |