GB1604365A - Method and apparatus for detecting bar code data - Google Patents

Method and apparatus for detecting bar code data Download PDF

Info

Publication number
GB1604365A
GB1604365A GB20850/78A GB2085078A GB1604365A GB 1604365 A GB1604365 A GB 1604365A GB 20850/78 A GB20850/78 A GB 20850/78A GB 2085078 A GB2085078 A GB 2085078A GB 1604365 A GB1604365 A GB 1604365A
Authority
GB
United Kingdom
Prior art keywords
signal
counting
pulses
frequency
gating
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
GB20850/78A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1604365A publication Critical patent/GB1604365A/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
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10881—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices constructional details of hand-held scanners
    • 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
    • G06K7/01—Details
    • G06K7/016—Synchronisation of sensing process
    • G06K7/0166—Synchronisation of sensing process by means of clock-signals derived from the code marks, e.g. self-clocking code

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Manipulation Of Pulses (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB20850/78A 1977-06-27 1978-05-19 Method and apparatus for detecting bar code data Expired GB1604365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/809,964 US4125765A (en) 1977-06-27 1977-06-27 Label find method and circuit

Publications (1)

Publication Number Publication Date
GB1604365A true GB1604365A (en) 1981-12-09

Family

ID=25202617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20850/78A Expired GB1604365A (en) 1977-06-27 1978-05-19 Method and apparatus for detecting bar code data

Country Status (7)

Country Link
US (1) US4125765A (enExample)
JP (1) JPS5410637A (enExample)
CA (1) CA1101556A (enExample)
DE (1) DE2822667C2 (enExample)
GB (1) GB1604365A (enExample)
IT (1) IT1111187B (enExample)
NL (1) NL7805536A (enExample)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125765A (en) * 1977-06-27 1978-11-14 International Business Machines Corporation Label find method and circuit
US4219152A (en) * 1979-02-21 1980-08-26 International Business Machines Corporation Dual threshold comparator circuit
DE2915732C2 (de) * 1979-04-19 1983-09-29 Scantron GmbH & Co Elektronische Lesegeräte KG, 6000 Frankfurt Verfahren zum Identifizieren von Gegenständen und Vorrichtung zum Durchführen dieses Verfahrens
US4272675A (en) * 1979-05-30 1981-06-09 Ncr Corporation Symbol processing system
US4282426A (en) * 1979-05-30 1981-08-04 Ncr Corporation Slot scanning system
US4253018A (en) * 1979-05-30 1981-02-24 Ncr Corporation Symbol decoding system
US4344152A (en) * 1979-11-29 1982-08-10 International Business Machines Corp. Buffer memory control circuit for label scanning system
US4308455A (en) * 1980-06-26 1981-12-29 E. I. Du Pont De Nemours And Company Method for decoding bar-coded labels
US4611335A (en) * 1981-09-30 1986-09-09 Hitachi, Ltd. Digital data synchronizing circuit
JPS6011973A (ja) * 1983-07-01 1985-01-22 Nec Corp バ−コ−ド読取装置
FR2576732B1 (fr) * 1985-01-30 1993-01-22 Bonnaval Lamothe Michel Procede et dispositif de transmission d'informations codees
JPS61152149U (enExample) * 1986-02-27 1986-09-20
JPS63165192U (enExample) * 1987-04-17 1988-10-27
US4879456A (en) * 1987-06-18 1989-11-07 Spectra-Physics, Inc. Method of decoding a binary scan signal
JPS6441289U (enExample) * 1987-09-05 1989-03-13
JPH0782519B2 (ja) * 1988-05-18 1995-09-06 アルプス電気株式会社 符号読取装置
US5486944A (en) * 1989-10-30 1996-01-23 Symbol Technologies, Inc. Scanner module for symbol scanning system
US5229591A (en) * 1988-10-21 1993-07-20 Symbol Technologies, Inc. Scanning system with adjustable light output and/or scanning angle
US4933538A (en) * 1988-10-21 1990-06-12 Symbol Technologies, Inc. Scanning system with adjustable light output and/or scanning angle
US5811785A (en) * 1988-10-21 1998-09-22 Symbol Technologies, Inc. Scanning system with adjustable light output and/or scanning angle
JP2886545B2 (ja) * 1989-03-03 1999-04-26 富士通株式会社 マージン認識方法及びバーコード読取り装置
JP2729088B2 (ja) * 1989-09-22 1998-03-18 富士通株式会社 バーコードリーダ処理装置
US4963719A (en) * 1989-11-01 1990-10-16 Spectra-Physics Bar code scanner and method of scanning
US4992650A (en) * 1990-03-29 1991-02-12 International Business Machines Corporation Method and apparatus for barcode recognition in a digital image
US5120940A (en) * 1990-08-10 1992-06-09 The Boeing Company Detection of barcodes in binary images with arbitrary orientation
DE19537368A1 (de) * 1995-10-06 1997-04-10 Sick Ag Verfahren und Vorrichtung zum Lesen eines Strichcodes
JP5424369B1 (ja) * 2012-12-12 2014-02-26 Ｎｅｃインフロンティア株式会社 バーコードリーダ、バーコード読取り方法及びバーコード読取り用プログラム

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723710A (en) * 1971-06-28 1973-03-27 Ibm Method and device for reading and decoding a high density self-clocking bar code
JPS4852212A (enExample) * 1971-10-30 1973-07-23
SE356146B (enExample) * 1972-01-27 1973-05-14 Svenska Dataregister Ab
US3784792A (en) * 1972-03-29 1974-01-08 Monarch Marking Systems Inc Coded record and methods of and apparatus for encoding and decoding records
JPS4898813A (enExample) * 1972-03-29 1973-12-14
US3979577A (en) * 1973-12-05 1976-09-07 Data General Corporation Code recognition record medium and technique
US3909787A (en) * 1974-07-01 1975-09-30 Ibm Candidate selection processor
JPS528727A (en) * 1975-07-10 1977-01-22 Mitsubishi Electric Corp Barcode read-out device
JPS5250632A (en) * 1975-10-21 1977-04-22 Matsushita Electric Ind Co Ltd Optical symbol reading device
US3978319A (en) * 1975-10-29 1976-08-31 International Business Machines Corporation Universal self-clocking code reading method and apparatus
US4125765A (en) * 1977-06-27 1978-11-14 International Business Machines Corporation Label find method and circuit

Also Published As

Publication number Publication date
DE2822667A1 (de) 1979-01-04
DE2822667C2 (de) 1984-03-22
CA1101556A (en) 1981-05-19
US4125765A (en) 1978-11-14
JPS5410637A (en) 1979-01-26
IT7824895A0 (it) 1978-06-23
NL7805536A (nl) 1978-12-29
JPS5759584B2 (enExample) 1982-12-15
IT1111187B (it) 1986-01-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee