JPH0438166U - - Google Patents
Info
- Publication number
- JPH0438166U JPH0438166U JP8044590U JP8044590U JPH0438166U JP H0438166 U JPH0438166 U JP H0438166U JP 8044590 U JP8044590 U JP 8044590U JP 8044590 U JP8044590 U JP 8044590U JP H0438166 U JPH0438166 U JP H0438166U
- Authority
- JP
- Japan
- Prior art keywords
- charge storage
- storage element
- signal
- pixel
- average value
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第１図ないし第４図は本考案による画像読取装
置の一実施例を示す図であり、第１図は電荷蓄積
素子に対する検出シートの配置を示す正面図、第
２図はその側面図、第３図は検出シートの作動を
示すタイミングチヤート、第４図は信号処理回路
の回路図、第５図および第６図は従来の画像読取
装置の信号処理を示す波形図である。
１……ＣＣＤ（電荷蓄積素子）、４……検出シ
ート、７……モータ。
1 to 4 are diagrams showing an embodiment of an image reading device according to the present invention, in which FIG. 1 is a front view showing the arrangement of a detection sheet with respect to a charge storage element, and FIG. 2 is a side view thereof, and FIG. FIG. 3 is a timing chart showing the operation of the detection sheet, FIG. 4 is a circuit diagram of a signal processing circuit, and FIGS. 5 and 6 are waveform diagrams showing signal processing of a conventional image reading device. 1...CCD (charge storage device), 4...detection sheet, 7...motor.
Claims (1)
荷蓄積素子の各画素の感度差を電荷蓄積素子に検
出させるため電荷蓄積素子のライン方向に移動す
る検出シートと、前記電荷蓄積素子の光シールド
部から検出した電荷蓄積素子のライン方向の黒基
準信号の平均値を算出すると共に、この平均値を
前記各画素の感度差データに基づいて補正し、各
画素の黒補正信号を画信号から除去して出力する
信号処理手段とを備えていることを特徴とする画
像読取装置。 A charge storage element that outputs a video signal, a detection sheet that moves in the line direction of the charge storage element to allow the charge storage element to detect the sensitivity difference between each pixel of the charge storage element, and a light shield section of the charge storage element. The average value of the black reference signal in the line direction of the detected charge storage element is calculated, and this average value is corrected based on the sensitivity difference data of each pixel, and the black correction signal of each pixel is removed from the image signal. An image reading device comprising a signal processing means for outputting a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8044590U JPH0438166U (en) | 1990-07-27 | 1990-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8044590U JPH0438166U (en) | 1990-07-27 | 1990-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438166U true JPH0438166U (en) | 1992-03-31 |
Family
ID=31625512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8044590U Pending JPH0438166U (en) | 1990-07-27 | 1990-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438166U (en) |
-
1990
- 1990-07-27 JP JP8044590U patent/JPH0438166U/ja active Pending
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