JPS58164362U

JPS58164362U - Image information reading device

Info

Publication number: JPS58164362U
Application number: JP2607283U
Authority: JP
Inventors: 長野　文一
Original assignee: シャープ株式会社
Priority date: 1983-02-23
Filing date: 1983-02-23
Publication date: 1983-11-01
Also published as: JPS5929421Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はファクシミリ等の画像読取装置の概略図、第２
図は、画像情報のアナログ信号のパターン例、第３図は
、コンパレータの出力波形図、第４図は、本考案実施例
のブロック線図、第５図はＲＯＭの内容の一例、６・・・光電変換センサー、７・・・増幅回路、８・・
・ピーク保持回路、９・・・深いスライスレベルを持つ
コンパレータ、１０・・・浅いスライスレベルを持つコ
ンパレータ、１１・・・９ビツトシフトレジスタ、１２
・・・５ビツトシフトレジスタ、１３・・・ＲＯＭ。１４・・・ナンド回路、１５・・・インバータ回路、１
６・・・ナンド回路、１７・・・ナンド回路、１８・・
・０２４７７９７１７０７１回路。Figure 1 is a schematic diagram of an image reading device such as a facsimile;
The figure shows an example of a pattern of an analog signal of image information, FIG. 3 is a comparator output waveform diagram, FIG. 4 is a block diagram of an embodiment of the present invention, and FIG. 5 is an example of the contents of a ROM. 6.・Photoelectric conversion sensor, 7... Amplification circuit, 8...
・Peak holding circuit, 9... Comparator with deep slice level, 10... Comparator with shallow slice level, 11... 9-bit shift register, 12
...5-bit shift register, 13...ROM. 14... NAND circuit, 15... Inverter circuit, 1
6... NAND circuit, 17... NAND circuit, 18...
・024779717071 circuit.

Claims

[Claims for Utility Model Registration] An optical image reading means, a first tamperer and a second comparator that slice the output signals of the reading means at different levels and convert them into digital signals; a first memory and a second memory that sequentially store the signals converted by the second comparator; a gate circuit connected to each corresponding storage location of the first memory and the second memory; and a gate circuit that is connected to each corresponding storage location of the first memory and the second memory; A ROM that inputs the stored contents before and after the storage position connected to the gate circuit of the ROM and outputs a 1''. An image information reading device comprising means for controlling conduction of the gate circuit by a signal.