CA1248230A - Optical scanner for reading bar codes detected within a large depth of field - Google Patents

Optical scanner for reading bar codes detected within a large depth of field

Info

Publication number
CA1248230A
CA1248230A CA000536699A CA536699A CA1248230A CA 1248230 A CA1248230 A CA 1248230A CA 000536699 A CA000536699 A CA 000536699A CA 536699 A CA536699 A CA 536699A CA 1248230 A CA1248230 A CA 1248230A
Authority
CA
Canada
Prior art keywords
scan lines
focal
label
scanner
scan
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
CA000536699A
Other languages
English (en)
French (fr)
Inventor
Leroy D. Dickson
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
Application granted granted Critical
Publication of CA1248230A publication Critical patent/CA1248230A/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
    • G06K7/10861—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 sensing of data fields affixed to objects or articles, e.g. coded labels
    • G06K7/10871—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 sensing of data fields affixed to objects or articles, e.g. coded labels randomly oriented data-fields, code-marks therefore, e.g. concentric circles-code
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/106—Scanning systems having diffraction gratings as scanning elements, e.g. holographic scanners
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2207/00—Other aspects
    • G06K2207/1013—Multi-focal

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)
CA000536699A 1986-06-13 1987-05-08 Optical scanner for reading bar codes detected within a large depth of field Expired CA1248230A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US873,934 1986-06-13
US06/873,934 US4748316A (en) 1986-06-13 1986-06-13 Optical scanner for reading bar codes detected within a large depth of field

Publications (1)

Publication Number Publication Date
CA1248230A true CA1248230A (en) 1989-01-03

Family

ID=25362636

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000536699A Expired CA1248230A (en) 1986-06-13 1987-05-08 Optical scanner for reading bar codes detected within a large depth of field

Country Status (5)

Country Link
US (1) US4748316A (en, 2012)
EP (1) EP0249713B1 (en, 2012)
JP (1) JPS62293489A (en, 2012)
CA (1) CA1248230A (en, 2012)
DE (1) DE3787570T2 (en, 2012)

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US5756981A (en) * 1992-02-27 1998-05-26 Symbol Technologies, Inc. Optical scanner for reading and decoding one- and-two-dimensional symbologies at variable depths of field including memory efficient high speed image processing means and high accuracy image analysis means
US5347121A (en) * 1992-12-18 1994-09-13 Spectra-Physics Scanning Systems, Inc. Variable focus optical system for data reading
US5479011A (en) * 1992-12-18 1995-12-26 Spectra-Physics Scanning Systems, Inc. Variable focus optical system for data reading
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US6758402B1 (en) 1994-08-17 2004-07-06 Metrologic Instruments, Inc. Bioptical holographic laser scanning system
US7051922B2 (en) * 1994-08-17 2006-05-30 Metrologic Instruments, Inc. Compact bioptical laser scanning system
US6547144B1 (en) 1994-08-17 2003-04-15 Metrologic Instruments, Inc. Holographic laser scanning system for carrying out light collection operations with improved light collection efficiency
US6006993A (en) * 1994-08-17 1999-12-28 Metrologic Instruments, Inc. Holographic laser scanning system for carrying out laser beam scanning operations with improved scan angle multiplication efficiency and carrying out light collection operations with improved light collection efficiency
US6073846A (en) 1994-08-17 2000-06-13 Metrologic Instruments, Inc. Holographic laser scanning system and process and apparatus and method
US6199759B1 (en) 1994-08-17 2001-03-13 Metrologic Instruments, Inc. Bar code symbol scanning system having a holographic laser scanning disc utilizing maximum light collection surface area thereof and having scanning facets with optimized light collection efficiency
US6085978A (en) * 1994-08-17 2000-07-11 Metrologic Instruments, Inc. Holographic laser scanners of modular construction and method and apparatus for designing and manufacturing the same
US6003772A (en) * 1994-08-17 1999-12-21 Metrologic Instruments, Inc. Holographic laser scanning system employing holographic scanning disc having dual-fringe contrast regions for optimized laser beam scanning and light collection operations
US6158659A (en) * 1994-08-17 2000-12-12 Metrologic Instruments, Inc. Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes
US6029893A (en) * 1995-05-22 2000-02-29 Symbol Technologies, Inc. Optical scanner having a reflected light collector including holographic optical elements
US5699182A (en) * 1995-05-25 1997-12-16 Xytronyx, Inc. Light fatigue resistant photochromic formulations
US6629640B2 (en) * 1995-12-18 2003-10-07 Metrologic Instruments, Inc. Holographic laser scanning method and system employing visible scanning-zone indicators identifying a three-dimensional omni-directional laser scanning volume for package transport navigation
US6619550B1 (en) 1995-12-18 2003-09-16 Metrologic Instruments, Inc. Automated tunnel-type laser scanning system employing corner-projected orthogonal laser scanning patterns for enhanced reading of ladder and picket fence oriented bar codes on packages moving therethrough
US5920407A (en) * 1997-01-09 1999-07-06 Hewlett-Packard Company Method and apparatus for applying tonal correction to image data
US6134039A (en) * 1998-01-27 2000-10-17 Psc Scanning, Inc. Wavelength dependent thermally compensated optical system
US6531262B1 (en) * 1998-06-25 2003-03-11 Spectradisc Corporation Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant
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US6344893B1 (en) 2000-06-19 2002-02-05 Ramot University Authority For Applied Research And Industrial Development Ltd. Super-resolving imaging system
US6982109B2 (en) * 2000-12-11 2006-01-03 Flexplay Technologies, Inc. Method for rendering surface layer of limited play disk lightfast
WO2002099470A2 (en) * 2001-06-05 2002-12-12 Flexplay Technologies, Inc. Limited play optical devices with interstitial reactive layer and methods of making same
US8171567B1 (en) 2002-09-04 2012-05-01 Tracer Detection Technology Corp. Authentication method and system
MXPA06010401A (es) 2004-03-12 2007-01-19 Ingenia Technology Ltd Metodos y aparatos para crear articulos impresos autentificables y para verificarlos posteriormente.
EP2131309A3 (en) 2004-03-12 2011-02-09 Ingenia Technology Limited Authenticity signatures
GB2417592B (en) * 2004-08-13 2006-07-26 Ingenia Technology Ltd Authenticity verification of articles
US20060294583A1 (en) * 2005-05-11 2006-12-28 Ingenia Holdings (U.K.) Limited Authenticity Verification
WO2007012815A1 (en) * 2005-07-27 2007-02-01 Ingenia Technology Limited Authenticity verification
WO2007012821A1 (en) * 2005-07-27 2007-02-01 Ingenia Technology Limited Verification of the signature of an article created from signals obtained from scatter of coherent optical radiation from the surface of the article
JP5123181B2 (ja) * 2005-07-27 2013-01-16 インジェニア・テクノロジー・（ユーケイ）・リミテッド 真正性の検証
GB2429950B (en) * 2005-09-08 2007-08-22 Ingenia Holdings Copying
WO2007072044A1 (en) 2005-12-23 2007-06-28 Ingenia Holdings (Uk) Limited Optical authentication
GB2434442A (en) * 2006-01-16 2007-07-25 Ingenia Holdings Verification of performance attributes of packaged integrated circuits
GB2450131B (en) * 2007-06-13 2009-05-06 Ingenia Holdings Fuzzy Keys
GB2460625B (en) * 2008-05-14 2010-05-26 Ingenia Holdings Two tier authentication
GB2461253B (en) * 2008-05-23 2012-11-21 Ingenia Holdings Ltd Linearisation of scanned data
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GB1170234A (en) * 1965-11-12 1969-11-12 Nat Res Dev Improvements in or relating to Electronic Systems and Apparatus for Recognising Printed Characters.
NL149309B (nl) * 1969-05-10 1976-04-15 Philips Nv Karakteraftastinrichting voorzien van een schakeling voor het bepalen van de katakterhartlijn.
JPS5285419A (en) * 1976-01-09 1977-07-15 Tsubakimoto Chain Co Read depth controller for optical reader
US4160237A (en) * 1978-02-02 1979-07-03 Sperry Rand Corporation Optical reader for multiline image processing
US4224509A (en) * 1978-10-19 1980-09-23 Ncr Corporation Holographic scanning system
DE2925734C3 (de) * 1979-06-26 1982-06-24 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Optisches Fehlersuchgerät für Materialbahnen
US4560862A (en) * 1983-04-26 1985-12-24 Skan-A-Matic Corp. System for optical scanning over a large depth of field
US4591242A (en) * 1984-02-13 1986-05-27 International Business Machines Corp. Optical scanner having multiple, simultaneous scan lines with different focal lengths

Also Published As

Publication number Publication date
DE3787570T2 (de) 1994-05-11
EP0249713A2 (en) 1987-12-23
EP0249713B1 (en) 1993-09-29
DE3787570D1 (de) 1993-11-04
EP0249713A3 (en) 1989-10-18
US4748316A (en) 1988-05-31
JPH0566637B2 (en, 2012) 1993-09-22
JPS62293489A (ja) 1987-12-21

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