JPS6479892A - Optical character reader - Google Patents

Optical character reader

Info

Publication number
JPS6479892A
JPS6479892A JP62236077A JP23607787A JPS6479892A JP S6479892 A JPS6479892 A JP S6479892A JP 62236077 A JP62236077 A JP 62236077A JP 23607787 A JP23607787 A JP 23607787A JP S6479892 A JPS6479892 A JP S6479892A
Authority
JP
Japan
Prior art keywords
output
slip
head
image sensor
holding circuit
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
JP62236077A
Other languages
Japanese (ja)
Inventor
Yoshikazu Kobayashi
Michio Terai
Hideo Watanabe
Kiyoshi Takahashi
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP62236077A priority Critical patent/JPS6479892A/en
Publication of JPS6479892A publication Critical patent/JPS6479892A/en
Pending legal-status Critical Current

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  • Character Input (AREA)

Abstract

PURPOSE:To accurately detect the head of a slip by binarizing the output of an image sensor by an output from a white peak holding circuit, comparing the output of the white peak holding circuit with a fixed slice level and detecting the head of the slip. CONSTITUTION:A binarizing means (e.g. an A/D converter 8) binarizes the output of the image sensor 5 by the output (reference) of the white peak holding circuit 7. Even if the quantity of a light source 3 or external light for radiating the surface of the slip 1 is changed, the output can be accurately binarized. A comparator 10 compares the output of the circuit 7 with the fixed slice level determined from the output level of the image sensor 5 at the time of scanning a carrier surface to detect the head of the slip 1, so that even when the carrier surface (backing face) is not completely black and the quantity of light is varied, the head of the slip can be correctly detected.
JP62236077A 1987-09-22 1987-09-22 Optical character reader Pending JPS6479892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62236077A JPS6479892A (en) 1987-09-22 1987-09-22 Optical character reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62236077A JPS6479892A (en) 1987-09-22 1987-09-22 Optical character reader

Publications (1)

Publication Number Publication Date
JPS6479892A true JPS6479892A (en) 1989-03-24

Family

ID=16995379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62236077A Pending JPS6479892A (en) 1987-09-22 1987-09-22 Optical character reader

Country Status (1)

Country Link
JP (1) JPS6479892A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124786A (en) * 1990-09-17 1992-04-24 Oki Electric Ind Co Ltd Optical character reader
US6977629B2 (en) 2001-06-23 2005-12-20 Thomson Licensing Stereoscopic picture separation for phosphor lag reduction in PDP

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059483A (en) * 1983-09-13 1985-04-05 Fujitsu Ltd Form edge detecting system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059483A (en) * 1983-09-13 1985-04-05 Fujitsu Ltd Form edge detecting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124786A (en) * 1990-09-17 1992-04-24 Oki Electric Ind Co Ltd Optical character reader
US6977629B2 (en) 2001-06-23 2005-12-20 Thomson Licensing Stereoscopic picture separation for phosphor lag reduction in PDP

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