CA1072683A - Code discriminator - Google Patents

Code discriminator

Info

Publication number
CA1072683A
CA1072683A CA260,331A CA260331A CA1072683A CA 1072683 A CA1072683 A CA 1072683A CA 260331 A CA260331 A CA 260331A CA 1072683 A CA1072683 A CA 1072683A
Authority
CA
Canada
Prior art keywords
character
output
code
discriminator
counter
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.)
Expired
Application number
CA260,331A
Other languages
English (en)
French (fr)
Inventor
Tetsuo Yamaguchi
Shuzi Harada
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of CA1072683A publication Critical patent/CA1072683A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/146—Methods for optical code recognition the method including quality enhancement steps
    • G06K7/1486—Setting the threshold-width for bar codes to be decoded
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Character Input (AREA)
  • Communication Control (AREA)
CA260,331A 1975-09-02 1976-09-01 Code discriminator Expired CA1072683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50106740A JPS5230119A (en) 1975-09-02 1975-09-02 Bar code discrimination logical circuit

Publications (1)

Publication Number Publication Date
CA1072683A true CA1072683A (en) 1980-02-26

Family

ID=14441308

Family Applications (1)

Application Number Title Priority Date Filing Date
CA260,331A Expired CA1072683A (en) 1975-09-02 1976-09-01 Code discriminator

Country Status (4)

Country Link
US (1) US4095096A (enExample)
JP (1) JPS5230119A (enExample)
CA (1) CA1072683A (enExample)
GB (1) GB1519256A (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2910795C2 (de) * 1979-03-19 1984-01-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und Vorrichtung zur Erkennung von in Spuren angeordneten strichcodierten Informationen
US4272675A (en) * 1979-05-30 1981-06-09 Ncr Corporation Symbol processing system
US4253018A (en) * 1979-05-30 1981-02-24 Ncr Corporation Symbol decoding system
US4282426A (en) * 1979-05-30 1981-08-04 Ncr Corporation Slot scanning system
JPS5654574A (en) * 1979-10-09 1981-05-14 Nec Corp Bar code reader
US4323772A (en) * 1980-03-06 1982-04-06 R. J. Reynolds Tobacco Company Bar code reader system
US4414468A (en) * 1981-05-18 1983-11-08 International Business Machines Corporation Systematic error correction in bar code scanner
US4463250A (en) * 1981-07-11 1984-07-31 Mcneight David L Method and apparatus for use against counterfeiting
JPS5911363U (ja) * 1982-07-08 1984-01-24 カシオ計算機株式会社 バ−コ−ド読取装置
JPS59170973A (ja) * 1983-03-17 1984-09-27 Nec Home Electronics Ltd バ−コ−ド読取装置
JPH0782519B2 (ja) * 1988-05-18 1995-09-06 アルプス電気株式会社 符号読取装置
US5189289A (en) * 1989-05-17 1993-02-23 Fujitsu Limited Distinguishing bar code types by comparing bar block sizes
JPH05108858A (ja) * 1991-10-18 1993-04-30 Pfu Ltd バーコード読み取り制御方式
JP2836773B2 (ja) * 1993-12-20 1998-12-14 富士通株式会社 バーコードデータ検出方法及び装置
JP3623003B2 (ja) * 1995-03-10 2005-02-23 シャープ株式会社 デジタル情報記録方法および解読方法
US8682077B1 (en) 2000-11-28 2014-03-25 Hand Held Products, Inc. Method for omnidirectional processing of 2D images including recognizable characters
JP4202101B2 (ja) * 2002-10-10 2008-12-24 富士通株式会社 バーコード認識方法、および認識用デコード処理装置
US8135670B2 (en) * 2008-07-22 2012-03-13 International Business Machines Corporation Embedded change logging for data synchronization

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838251A (en) * 1971-06-29 1974-09-24 Monarch Marking Systems Inc Method of interpreting a coded record
BE791469A (fr) * 1971-11-16 1973-03-16 Monarch Marking Systems Inc Enregistrement code et procede et systeme d'interpretation de cet enregistrement
US3784792A (en) * 1972-03-29 1974-01-08 Monarch Marking Systems Inc Coded record and methods of and apparatus for encoding and decoding records
US3906202A (en) * 1974-03-01 1975-09-16 Monarch Marking Systems Inc Data retrieval and error detection method and apparatus designed for use in a width-modulated bar-code scanning apparatus
US3959625A (en) * 1973-12-26 1976-05-25 Casio Computer Co., Ltd. Coded information-reading device
US3916154A (en) * 1975-01-06 1975-10-28 Singer Co Method and circuitry for decoding a high density bar code

Also Published As

Publication number Publication date
GB1519256A (en) 1978-07-26
JPS546446B2 (enExample) 1979-03-28
JPS5230119A (en) 1977-03-07
US4095096A (en) 1978-06-13

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Legal Events

Date Code Title Description
MKEX Expiry