JPH0377555U - - Google Patents
Info
- Publication number
- JPH0377555U JPH0377555U JP13874589U JP13874589U JPH0377555U JP H0377555 U JPH0377555 U JP H0377555U JP 13874589 U JP13874589 U JP 13874589U JP 13874589 U JP13874589 U JP 13874589U JP H0377555 U JPH0377555 U JP H0377555U
- Authority
- JP
- Japan
- Prior art keywords
- output
- photoelectric conversion
- pixel
- conversion
- image sensor
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Facsimile Image Signal Circuits (AREA)
- Facsimile Scanning Arrangements (AREA)
Description
第１図は本考案の一実施例による画像読取装置
の概略構成図、第２図は同装置に用いられている
データ変換メモリーの記憶内容の概要を示す図、
第３図は従来の画像読取装置の概略構成図、第４
図は同装置に用いられている補正データメモリー
の記憶内容の概要を示す図、第５図は光電変換素
子の特性バラツキ状態を示すための図である。
１……原稿、２……照明用光源、３……結像光
学系、４……ＣＣＤのごとき撮像素子、５……ア
ナログアンプ、６……ＡＤ変換器、７……制御部
（同期コントローラ）、１０……データ変換メモ
リー。
FIG. 1 is a schematic configuration diagram of an image reading device according to an embodiment of the present invention, and FIG. 2 is a diagram showing an overview of the stored contents of a data conversion memory used in the device.
Figure 3 is a schematic configuration diagram of a conventional image reading device;
The figure is a diagram showing an outline of the stored contents of the correction data memory used in the same device, and FIG. 5 is a diagram showing the state of variation in characteristics of the photoelectric conversion elements. 1... Original, 2... Light source for illumination, 3... Imaging optical system, 4... Imaging device such as CCD, 5... Analog amplifier, 6... AD converter, 7... Control unit (synchronous controller ), 10...Data conversion memory.
Claims (1)
元の画像を画素単位で読み取つて出力する撮像素
子と、この撮像素子から１画素分ずつ出力される
光電変換出力をデジタル化するＡＤ変換部と、こ
のＡＤ変換部からデジタル化されて出力される光
電変換出力に対応する画素アドレスを前記撮像素
子の出力動作に同期して発生する制御手段と、前
記撮像素子内の各光電変換素子における受光量と
光電変換出力値の間の変換特性をそれぞれ一定に
揃えるような出力値別の期待値データを各光電変
換素子ごとにあらかじめ記憶し、前記ＡＤ変換部
からデジタル化されて出力される光電変換出力値
と前記制御手段から発せられる画素アドレスによ
つて読出アドレスを指定させて、画素間の変換特
性差を見掛け上なくした画像データとを出力する
データ変換メモリーとを備えた画像読取装置。 An image sensor that reads and outputs a one-dimensional or two-dimensional image pixel by pixel using a large number of photoelectric conversion elements, and an AD converter that digitizes the photoelectric conversion output that is output for each pixel from the image sensor. a control means that generates a pixel address corresponding to the photoelectric conversion output digitized and output from the AD converter in synchronization with the output operation of the image sensor; Expected value data for each output value is stored in advance for each photoelectric conversion element so that the conversion characteristics between the photoelectric conversion output values are made constant, and the photoelectric conversion output value is digitized and output from the AD conversion section. and a data conversion memory for outputting image data in which a read address is designated by a pixel address issued from the control means, and a difference in conversion characteristics between pixels is apparently eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13874589U JPH0377555U (en) | 1989-11-30 | 1989-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13874589U JPH0377555U (en) | 1989-11-30 | 1989-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0377555U true JPH0377555U (en) | 1991-08-05 |
Family
ID=31685826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13874589U Pending JPH0377555U (en) | 1989-11-30 | 1989-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0377555U (en) |
-
1989
- 1989-11-30 JP JP13874589U patent/JPH0377555U/ja active Pending
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