JPS5636772A - Binary coding circuit - Google Patents

Binary coding circuit

Info

Publication number
JPS5636772A
JPS5636772A JP11260279A JP11260279A JPS5636772A JP S5636772 A JPS5636772 A JP S5636772A JP 11260279 A JP11260279 A JP 11260279A JP 11260279 A JP11260279 A JP 11260279A JP S5636772 A JPS5636772 A JP S5636772A
Authority
JP
Japan
Prior art keywords
signals
circuit
comparators
level
directional
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.)
Granted
Application number
JP11260279A
Other languages
Japanese (ja)
Other versions
JPS617674B2 (en
Inventor
Koji Sato
Akihiro Ooka
Fukuma Sakamoto
Masatoshi Tanaka
Norio Isshiki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP11260279A priority Critical patent/JPS5636772A/en
Priority to GB8214333A priority patent/GB2098774B/en
Priority to GB8023385A priority patent/GB2054927B/en
Priority to FR8015967A priority patent/FR2462063B1/en
Priority to AU60625/80A priority patent/AU531865B2/en
Priority to US06/170,238 priority patent/US4402087A/en
Priority to DE3027299A priority patent/DE3027299C2/en
Priority to DE3050784A priority patent/DE3050784C2/en
Priority to IT8049282A priority patent/IT1145660B/en
Publication of JPS5636772A publication Critical patent/JPS5636772A/en
Priority to AU16764/83A priority patent/AU542575B2/en
Publication of JPS617674B2 publication Critical patent/JPS617674B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain binary signals that correspond to a character area and background area with accuracy, by providing an adjusting circuit that corrects fluctuations of column-directional or row-directional levels of analog electric signals.
CONSTITUTION: Analog electric signals I1WIn transmitted from photoelectric converter 1 are supplied to intercolumn level adjusting circuits 31W3n to obtain analog electric signals J1WJn having column-directional gradients corrected. Those signals J1WJn are supplied to comparators 41W4n and whitest-level detecting circuit 5. Circuit 5 detects whitest level Wmax of signals J1WJn and reference voltage generating circuit 6 generates reference voltage Vref1 by the level Wmax and supplies it to comparators 41W4n. Comparators 41W4n compare this voltage Vref1 to signals J1WJn to send binary signals B1WBn, which correspond to signals J1WJn, to discriminating circuit 7. At this time, signals B1WBn become those corresponding to the character area and background area securely by correcting the inclination of unit 1 in the row and column directions.
COPYRIGHT: (C)1981,JPO&Japio
JP11260279A 1979-07-20 1979-09-03 Binary coding circuit Granted JPS5636772A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP11260279A JPS5636772A (en) 1979-09-03 1979-09-03 Binary coding circuit
GB8214333A GB2098774B (en) 1979-07-20 1980-07-17 Binary coding circuit
GB8023385A GB2054927B (en) 1979-07-20 1980-07-17 Binary coding circuit
US06/170,238 US4402087A (en) 1979-07-20 1980-07-18 Binary coding circuit
AU60625/80A AU531865B2 (en) 1979-07-20 1980-07-18 Coding circuit for card reader
FR8015967A FR2462063B1 (en) 1979-07-20 1980-07-18 BINARY CODING CIRCUIT
DE3027299A DE3027299C2 (en) 1979-07-20 1980-07-18 Binary coding circuit
DE3050784A DE3050784C2 (en) 1979-07-20 1980-07-18 Binary coding circuit
IT8049282A IT1145660B (en) 1979-07-20 1980-07-21 Binary coding of photodetector signals for character recognition appts
AU16764/83A AU542575B2 (en) 1979-07-20 1983-07-12 Binary coding circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11260279A JPS5636772A (en) 1979-09-03 1979-09-03 Binary coding circuit

Publications (2)

Publication Number Publication Date
JPS5636772A true JPS5636772A (en) 1981-04-10
JPS617674B2 JPS617674B2 (en) 1986-03-07

Family

ID=14590832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11260279A Granted JPS5636772A (en) 1979-07-20 1979-09-03 Binary coding circuit

Country Status (1)

Country Link
JP (1) JPS5636772A (en)

Also Published As

Publication number Publication date
JPS617674B2 (en) 1986-03-07

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