JPH0444760U - - Google Patents
Info
- Publication number
- JPH0444760U JPH0444760U JP8676590U JP8676590U JPH0444760U JP H0444760 U JPH0444760 U JP H0444760U JP 8676590 U JP8676590 U JP 8676590U JP 8676590 U JP8676590 U JP 8676590U JP H0444760 U JPH0444760 U JP H0444760U
- Authority
- JP
- Japan
- Prior art keywords
- output signal
- signal
- image
- white reference
- scanner
- 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
- 238000010606 normalization Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第１図は本考案の実施例を示す画像読取装置の
ブロツク図、第２図は従来の画像読取装置の一部
切欠斜視図、第３図は本考案の画像読取装置のタ
イムチヤート、第４図は本考案の画像読取装置の
動作フローチヤートである。
１……スキヤナ、２０……ホームマーク、２１
……ホーム位置、３０……２値化処理部、３１…
…増幅器、３２……正規化回路、３３……白基準
メモリ、３４……２値化回路、３５……メモリ、
３６……タイミングジエネレータ、３７……信号
描出部、３８……アンドゲート、４０……制御回
路、５０……ホストコンピユータ。
FIG. 1 is a block diagram of an image reading device showing an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of a conventional image reading device, FIG. 3 is a time chart of the image reading device of the present invention, and FIG. The figure is an operation flowchart of the image reading device of the present invention. 1...Sukiyana, 20...Home mark, 21
... Home position, 30 ... Binarization processing section, 31 ...
...Amplifier, 32 ... Normalization circuit, 33 ... White reference memory, 34 ... Binarization circuit, 35 ... Memory,
36... Timing generator, 37... Signal drawing unit, 38... AND gate, 40... Control circuit, 50... Host computer.
Claims (1)
したスキヤナと、 (b) 該スキヤナを副走査方向に走行させるため
の駆動手段と、 (c) 上記スキヤナによる通常の読取範囲外に配
設され、スキヤナのホーム位置を示すホームマー
クと、 (d) 上記光電変換素子によつて画像を読み取り
、その画像信号を増幅する増幅器と、 (e) 白基準画像データを記憶する白基準メモリ
と、 (f) 上記増幅器からの出力信号を上記白基準メ
モリからの出力信号に基づいて正規化する正規化
回路と、 (g) 該正規化回路からの出力信号を２値化する
２値化回路と、 (h) 該２値化回路から出力される出力信号に基
づいてホームマークの信号を描出する信号描出部
を有することを特徴とする画像読取装置。[Scope of Claim for Utility Model Registration] (a) A scanner having a photoelectric conversion element and a light source arranged in the main scanning direction; (b) A driving means for driving the scanner in the sub-scanning direction; (c) The above-mentioned scanner (d) an amplifier that reads an image by the photoelectric conversion element and amplifies the image signal; (e) a white reference image; a white reference memory that stores data; (f) a normalization circuit that normalizes the output signal from the amplifier based on the output signal from the white reference memory; and (g) a normalization circuit that normalizes the output signal from the normalization circuit. An image reading device comprising: a binarization circuit that binarizes; and (h) a signal drawing section that draws a home mark signal based on an output signal output from the binarization circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8676590U JPH0444760U (en) | 1990-08-21 | 1990-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8676590U JPH0444760U (en) | 1990-08-21 | 1990-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444760U true JPH0444760U (en) | 1992-04-16 |
Family
ID=31818594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8676590U Pending JPH0444760U (en) | 1990-08-21 | 1990-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444760U (en) |
-
1990
- 1990-08-21 JP JP8676590U patent/JPH0444760U/ja active Pending
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