JPS5647873A - Quantitizing circuit - Google Patents

Quantitizing circuit

Info

Publication number
JPS5647873A
JPS5647873A JP12370979A JP12370979A JPS5647873A JP S5647873 A JPS5647873 A JP S5647873A JP 12370979 A JP12370979 A JP 12370979A JP 12370979 A JP12370979 A JP 12370979A JP S5647873 A JPS5647873 A JP S5647873A
Authority
JP
Japan
Prior art keywords
photoelectric conversion
scanning
frame
pattern
character
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
Application number
JP12370979A
Other languages
Japanese (ja)
Inventor
Kiyoyoshi Nara
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12370979A priority Critical patent/JPS5647873A/en
Publication of JPS5647873A publication Critical patent/JPS5647873A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain different quantitizing information and easily discriminate a character, by changing the threshold which is used in case a photoelectric conversion signal obtained by scanning a character is quantitized, whenever 1 frame of character is scanned.
CONSTITUTION: The surface array 2 consisting of photoelectric conversion elements of mxn pieces in the photoelectric conversion part 1 is driven for scanning in order in the line direction and also in the row direction, and a photoelectric conversion signal is sent from the out-put register 4 in order by a line each to the comparator 12 for quantitization under the control of the shift register 3. The shift register 3 sends a frame end pulse to the J-K flip flop 8 whenever scanning of 1 frame consisting of mxn bit is finished. The J-K flip flop 8 changes the threshold supplied to the comparator 12 to large and small in order whenever scanning of 1 frame is finished. As a result of the foregoing, both the somewhat thick pattern and the somewhat thin pattern are obtained, and proper discrimination can be performed by selecting one pattern depending on the pattern status.
COPYRIGHT: (C)1981,JPO&Japio
JP12370979A 1979-09-26 1979-09-26 Quantitizing circuit Pending JPS5647873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12370979A JPS5647873A (en) 1979-09-26 1979-09-26 Quantitizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12370979A JPS5647873A (en) 1979-09-26 1979-09-26 Quantitizing circuit

Publications (1)

Publication Number Publication Date
JPS5647873A true JPS5647873A (en) 1981-04-30

Family

ID=14867402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12370979A Pending JPS5647873A (en) 1979-09-26 1979-09-26 Quantitizing circuit

Country Status (1)

Country Link
JP (1) JPS5647873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179888A (en) * 1984-02-27 1985-09-13 Sumitomo Electric Ind Ltd Optical reader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179888A (en) * 1984-02-27 1985-09-13 Sumitomo Electric Ind Ltd Optical reader

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