JPS6251858U - - Google Patents
Info
- Publication number
- JPS6251858U JPS6251858U JP14284985U JP14284985U JPS6251858U JP S6251858 U JPS6251858 U JP S6251858U JP 14284985 U JP14284985 U JP 14284985U JP 14284985 U JP14284985 U JP 14284985U JP S6251858 U JPS6251858 U JP S6251858U
- Authority
- JP
- Japan
- Prior art keywords
- document
- image data
- conveyance speed
- input device
- image
- 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
- 239000000872 buffer Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の第１実施例のブロツク図、第
２図はエンコーダパルスのタイムチヤート、第３
図は第１実施例の変形例におけるマイコンの動作
フローチヤート、第４図は本考案の第２実施例の
ブロツク図、第５図は第４図の主要部の信号のタ
イムチヤートを示す。
１…イメージセンサ、３…Ａ／Ｄ変換器、５…
マイコン、７…パルスエンコーダ、９…ＲＯＭ、
１１…タイミングクロツク回路、１３…副走査系
駆動モータ、１５…マルチプレクサ、１７…デー
タセレクタ。
Figure 1 is a block diagram of the first embodiment of the present invention, Figure 2 is a time chart of encoder pulses, and Figure 3 is a time chart of encoder pulses.
4 is a block diagram of a second embodiment of the present invention, and FIG. 5 is a time chart of signals of the main parts of FIG. 4. 1... Image sensor, 3... A/D converter, 5...
Microcomputer, 7...Pulse encoder, 9...ROM,
11...Timing clock circuit, 13...Sub-scanning system drive motor, 15...Multiplexer, 17...Data selector.
Claims (1)
メージセンサと、原稿を副走査方向に搬送する手
段と、該原稿が一定の距離搬送される毎にエンコ
ーダパルスを出力する手段と、イメージセンサか
ら出力された画像データをデイジタル信号に変換
する手段を含む画像入力装置において、前記原稿
の搬送速度とは無関係に、有効な画像データを得
るようにした手段を設けたことを特徴とする画像
入力装置。 (2) 前記原稿の搬送速度とは無関係に、有効な
画像データを得るようにした手段が、該原稿の搬
送速度に応じて定められた補正係数を記憶する手
段と、前記画像データと前記補正係数とを乗ずる
演算処理手段とよりなることを特徴とする前記実
用新案登録請求の範囲第１項記載の画像入力装置
。 (3) 前記原稿の搬送速度とは無関係に、有効な
画像データを得るようにした手段が、一定周期で
イメージセンサから出力された画像データを交互
に記憶する第１および第２のラインバツフアと、
前記エンコーダパルス１個につき１回だけ書き込
み状態にない方のラインバツフアから、既に記憶
されている画像データを読み出す手段とよりなる
ことを特徴とする前記実用新案登録請求の範囲第
１項記載の画像入力装置。[Claims for Utility Model Registration] (1) An image sensor that reads a document and outputs image data, a means for conveying the document in the sub-scanning direction, and an encoder pulse that outputs an encoder pulse every time the document is conveyed a certain distance. In an image input device including means for converting image data output from an image sensor into a digital signal, the image input device includes means for obtaining valid image data regardless of the conveyance speed of the document. An image input device characterized by: (2) The means for obtaining valid image data regardless of the conveyance speed of the document includes means for storing a correction coefficient determined according to the conveyance speed of the document, and means for storing the correction coefficient determined according to the conveyance speed of the document, and the means for obtaining the valid image data regardless of the conveyance speed of the document. The image input device according to claim 1, further comprising arithmetic processing means for multiplying by a coefficient. (3) means for obtaining effective image data regardless of the conveyance speed of the document, first and second line buffers that alternately store image data output from the image sensor at a constant cycle;
The image input device according to claim 1, further comprising means for reading already stored image data from the line buffer that is not in the writing state only once per encoder pulse. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14284985U JPS6251858U (en) | 1985-09-20 | 1985-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14284985U JPS6251858U (en) | 1985-09-20 | 1985-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6251858U true JPS6251858U (en) | 1987-03-31 |
Family
ID=31051971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14284985U Pending JPS6251858U (en) | 1985-09-20 | 1985-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6251858U (en) |
-
1985
- 1985-09-20 JP JP14284985U patent/JPS6251858U/ja active Pending
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