JPH0455665U

JPH0455665U -

Info

Publication number: JPH0455665U
Application number: JP9646590U
Authority: JP
Priority date: 1990-09-17
Filing date: 1990-09-17
Publication date: 1992-05-13

Description

[Brief explanation of the drawing]

第１図ａは本考案の一実施例を示す光学式文字
読取装置の構成図、第１図ｂは第１図ａにおける
マーク検出回路の構成例を示す図、第２図は本考
案の実施例におけるマーク帳票とマーク検出回路
の信号の関係を示す図、第３図は従来の光学式文
字読取装置の構成図、第４図はマーク帳票が搬送
された場合を示す図、第５図はマーク帳票の一般
的な構成例を示す図、第６図は第３図のマークセ
ンサの構成例及びマーク帳票との位置関係を示す
図、第７図はマークセンサの動作を示す図、第８
図はマークセンサの出力波形を示す図である。１００……マーク検出回路、１０１……アドレ
スカウンタ、１０２……デコーダ、１０３……タ
イミングマーク検出回路、１０４……記入マーク
黒点集計カウンタ、１１０……白／黒の２値デー
タ、１１１……タイミングマーク信号。 FIG. 1a is a block diagram of an optical character reading device showing an embodiment of the present invention, FIG. 1b is a diagram showing an example of the structure of the mark detection circuit in FIG. 1a, and FIG. FIG. 3 is a diagram showing the relationship between the marked form and the signals of the mark detection circuit in the example, FIG. 3 is a block diagram of a conventional optical character reading device, FIG. 4 is a diagram showing the case where a marked form is conveyed, and FIG. 6 is a diagram showing a general configuration example of a mark form. FIG. 6 is a diagram showing an example of the configuration of the mark sensor in FIG. 3 and its positional relationship with the mark form. FIG. 7 is a diagram showing the operation of the mark sensor.
The figure is a diagram showing an output waveform of a mark sensor. 100...Mark detection circuit, 101...Address counter, 102...Decoder, 103...Timing mark detection circuit, 104...Enter mark black point tally counter, 110...White/black binary data, 111...Timing mark signal.

Claims

[Scope of utility model registration request] OCR to read image data of mark form
In an optical character reading device that includes a sensor, a binarization circuit that performs analog-to-digital conversion of the output of the OCR sensor and then binarization processing, and an image memory connected to the binarization circuit, the above-mentioned image Mark detection means is provided in parallel with the memory and connected to the binarization circuit to detect timing marks and entry marks on the mark form, and the mark detection means determines the positions of the timing marks and entry marks on the mark form. an address counter; a counter that counts the number of pixels of timing marks and entry marks from the binary image data from the binarization circuit; a comparator that compares the counting result with a predetermined threshold; and an output of the comparator. 1. An optical character reading device comprising: an output circuit that outputs a character signal corresponding to a mark position written by the user.