WO1998039727A3 - Symbology scanning system for efficiently locating coded symbologies - Google Patents

Symbology scanning system for efficiently locating coded symbologies Download PDF

Info

Publication number
WO1998039727A3
WO1998039727A3 PCT/US1998/004292 US9804292W WO9839727A3 WO 1998039727 A3 WO1998039727 A3 WO 1998039727A3 US 9804292 W US9804292 W US 9804292W WO 9839727 A3 WO9839727 A3 WO 9839727A3
Authority
WO
WIPO (PCT)
Prior art keywords
symbology
information
coded
signal
input seed
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.)
Ceased
Application number
PCT/US1998/004292
Other languages
French (fr)
Other versions
WO1998039727A9 (en
WO1998039727A2 (en
WO1998039727B1 (en
Inventor
Kurt Hecht
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.)
Accu Sort Systems Inc
Original Assignee
Accu Sort Systems Inc
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 Accu Sort Systems Inc filed Critical Accu Sort Systems Inc
Priority to CA002282392A priority Critical patent/CA2282392A1/en
Priority to AU61879/98A priority patent/AU6187998A/en
Priority to JP53879198A priority patent/JP2001513932A/en
Priority to AT98906733T priority patent/ATE255255T1/en
Priority to DE69820035T priority patent/DE69820035T2/en
Priority to EP98906733A priority patent/EP0965097B1/en
Publication of WO1998039727A2 publication Critical patent/WO1998039727A2/en
Publication of WO1998039727A3 publication Critical patent/WO1998039727A3/en
Publication of WO1998039727B1 publication Critical patent/WO1998039727B1/en
Publication of WO1998039727A9 publication Critical patent/WO1998039727A9/en
Anticipated expiration legal-status Critical
Ceased 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
    • G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
    • 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
    • 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
    • G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
    • G06K7/1443—Methods for optical code recognition including a method step for retrieval of the optical code locating of the code in an image

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Toxicology (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Error Detection And Correction (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Drilling And Boring (AREA)
  • Image Analysis (AREA)
  • Numerical Control (AREA)

Abstract

A scanner for optically scanning coded symbologies including a signal processing unit for pre-processing the scanned symbology information and a hardware symbology locating unit. An analog signal related to the reflectivity of the different portions of the coded symbology is obtained and is converted to digital gray-scale. The portion of the analog signal which corresponds to the substrate reflectance (absolute contrast) is removed, and the available dynamic range of the analog to digital converter is used only for the information-bearing portion of the signal (relative contrast). Since all of the decodable information is ultimately encoded in binary form, the information-bearing portion of the signal is retained. The hardware symbology locating unit includes a plurality of shift registers, each of which derives a value from an input seed which is based upon the width of a detected coded symbology element. The value of a subsequent input seed is compared to the values generated from a prior input seed. Based upon this comparison, the unit determines whether the size of a subsequent symbology element is a ratio match of a prior symbology element. The presence of a potential coded symbology candidate is likely when a plurality of ratio matches are detected.
PCT/US1998/004292 1997-03-07 1998-03-05 Symbology scanning system for efficiently locating coded symbologies Ceased WO1998039727A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA002282392A CA2282392A1 (en) 1997-03-07 1998-03-05 Symbology scanning system for efficiently locating coded symbologies
AU61879/98A AU6187998A (en) 1997-03-07 1998-03-05 Symbology scanning system for efficiently locating coded symbologies
JP53879198A JP2001513932A (en) 1997-03-07 1998-03-05 Scanning system for coded symbology to locate effectively
AT98906733T ATE255255T1 (en) 1997-03-07 1998-03-05 SYMBOL SCANNER FOR LOCALIZING CODED SYMBOLS
DE69820035T DE69820035T2 (en) 1997-03-07 1998-03-05 SYMBOL SAMPLE FOR LOCALIZING CODED SYMBOLS
EP98906733A EP0965097B1 (en) 1997-03-07 1998-03-05 Symbology scanning system for efficiently locating coded symbologies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81391797A 1997-03-07 1997-03-07
US08/813,917 1997-03-07

Publications (4)

Publication Number Publication Date
WO1998039727A2 WO1998039727A2 (en) 1998-09-11
WO1998039727A3 true WO1998039727A3 (en) 1998-11-26
WO1998039727B1 WO1998039727B1 (en) 1999-01-14
WO1998039727A9 WO1998039727A9 (en) 1999-02-25

Family

ID=25213753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/004292 Ceased WO1998039727A2 (en) 1997-03-07 1998-03-05 Symbology scanning system for efficiently locating coded symbologies

Country Status (8)

Country Link
US (1) US6508404B2 (en)
EP (1) EP0965097B1 (en)
JP (1) JP2001513932A (en)
AT (1) ATE255255T1 (en)
AU (1) AU6187998A (en)
CA (1) CA2282392A1 (en)
DE (1) DE69820035T2 (en)
WO (1) WO1998039727A2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7387253B1 (en) * 1996-09-03 2008-06-17 Hand Held Products, Inc. Optical reader system comprising local host processor and optical reader
US7304670B1 (en) * 1997-03-28 2007-12-04 Hand Held Products, Inc. Method and apparatus for compensating for fixed pattern noise in an imaging system
US7203361B1 (en) 2001-03-16 2007-04-10 Hand Held Products, Inc. Adaptive digitizer for optical reader
US7331523B2 (en) 2001-07-13 2008-02-19 Hand Held Products, Inc. Adaptive optical image reader
US20040134988A1 (en) * 2003-01-09 2004-07-15 Hand Held Products, Inc. Analog-to-digital converter with automatic range and sensitivity adjustment
US7726572B2 (en) 2004-12-03 2010-06-01 Symbol Technologies, Inc. Bar code scanning decoding
US7337970B2 (en) 2004-12-03 2008-03-04 Symbol Technologies, Inc. Barcode scanner decoding
US7273177B2 (en) * 2005-03-10 2007-09-25 Microsoft Corporation Camera-based barcode recognition
US7172124B2 (en) * 2005-03-10 2007-02-06 Microsoft Corporation Camera-based barcode recognition
US8047440B2 (en) * 2005-05-26 2011-11-01 Symbol Technologies, Inc. Method and system for decoding a barcode
US20080156619A1 (en) * 2006-12-01 2008-07-03 Mehul Patel Range finder
US7852519B2 (en) 2007-02-05 2010-12-14 Hand Held Products, Inc. Dual-tasking decoder for improved symbol reading
US8628015B2 (en) 2008-10-31 2014-01-14 Hand Held Products, Inc. Indicia reading terminal including frame quality evaluation processing
US8587595B2 (en) 2009-10-01 2013-11-19 Hand Held Products, Inc. Low power multi-core decoder system and method
CN103196837B (en) * 2013-03-06 2015-04-01 中国人民银行印制科学技术研究所 Image-type device and method for quantitative determination of infrared reflectivity and transmissivity
EP3459007B1 (en) 2016-08-31 2024-05-08 Abbott Laboratories Systems, apparatus, and related methods for evaluating biological sample integrity
CN111145465B (en) * 2018-11-05 2022-02-08 厦门拾数科技有限公司 Electronic printer system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036950A1 (en) * 1980-03-06 1981-10-07 R.J. Reynolds Tobacco Company Dynamic threshold detector
EP0667592A1 (en) * 1994-01-28 1995-08-16 Canon Inc. Method of coding information in the form of bar codes, a method of reading the latter and devices implementing these methods
US5451761A (en) * 1992-07-14 1995-09-19 Fujitsu Limited Bar code demodulating method
US5457309A (en) * 1994-03-18 1995-10-10 Hand Held Products Predictive bar code decoding system and method

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979577A (en) * 1973-12-05 1976-09-07 Data General Corporation Code recognition record medium and technique
JPS53128230A (en) * 1977-04-14 1978-11-09 Shinko Electric Co Ltd Method of reading bar code information in label reader
US4812918A (en) 1982-07-30 1989-03-14 Carbone Anthony K Method and apparatus for scanning and digitizing optical images
US4822986A (en) 1987-04-17 1989-04-18 Recognition Equipment Incorporated Method of detecting and reading postal bar codes
US4859840A (en) * 1987-10-30 1989-08-22 Alps Electric Co., Ltd. Code reading apparatus
US4939354A (en) 1988-05-05 1990-07-03 Datacode International, Inc. Dynamically variable machine readable binary code and method for reading and producing thereof
JPH0782519B2 (en) * 1988-05-18 1995-09-06 アルプス電気株式会社 Code reader
US4983817A (en) 1989-03-01 1991-01-08 Battelle Memorial Institute Background compensating bar code readers
JP2886545B2 (en) * 1989-03-03 1999-04-26 富士通株式会社 Margin recognition method and bar code reader
US5278400A (en) 1991-08-19 1994-01-11 Xerox Corp Multiple threshold encoding of machine readable code
JP2727037B2 (en) 1992-04-20 1998-03-11 富士通株式会社 Bar code reader
US5343028A (en) 1992-08-10 1994-08-30 United Parcel Service Of America, Inc. Method and apparatus for detecting and decoding bar code symbols using two-dimensional digital pixel images
US5412197A (en) 1993-01-29 1995-05-02 United Parcel Service Of America, Inc. Method and apparatus for decoding bar code symbols using gradient signals
JP3083464B2 (en) * 1995-08-10 2000-09-04 富士通株式会社 Barcode detection device and detection method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036950A1 (en) * 1980-03-06 1981-10-07 R.J. Reynolds Tobacco Company Dynamic threshold detector
US5451761A (en) * 1992-07-14 1995-09-19 Fujitsu Limited Bar code demodulating method
EP0667592A1 (en) * 1994-01-28 1995-08-16 Canon Inc. Method of coding information in the form of bar codes, a method of reading the latter and devices implementing these methods
US5457309A (en) * 1994-03-18 1995-10-10 Hand Held Products Predictive bar code decoding system and method

Also Published As

Publication number Publication date
US20020139851A1 (en) 2002-10-03
AU6187998A (en) 1998-09-22
EP0965097A2 (en) 1999-12-22
DE69820035D1 (en) 2004-01-08
CA2282392A1 (en) 1998-09-11
ATE255255T1 (en) 2003-12-15
EP0965097B1 (en) 2003-11-26
DE69820035T2 (en) 2004-08-26
US6508404B2 (en) 2003-01-21
JP2001513932A (en) 2001-09-04
WO1998039727A2 (en) 1998-09-11

Similar Documents

Publication Publication Date Title
WO1998039727A3 (en) Symbology scanning system for efficiently locating coded symbologies
US6152371A (en) Method and apparatus for decoding bar code symbols
US5536929A (en) Bar code detecting circuitry
US6655595B1 (en) Bar code reader configured to read fine print bar code symbols
US6547142B1 (en) Method of scanning indicia using selective sampling
US5777310A (en) Problem reduction with low level information integration in bar code decoding
WO1998039727B1 (en) Symbology scanning system for efficiently locating coded symbologies
CA2288758A1 (en) Optical scanner and image reader for reading images and decoding optical information including one and two dimensional symbologies at variable depth of field
EP1086439A4 (en) Imaging engine and techniques for reading postal codes
EP0881596A3 (en) Image enhancement and thresholding of images
WO2002048965A1 (en) Image angle detector and scanning line interpolating apparatus
EP1445725A3 (en) Optical scanner
WO1998039727A9 (en) Symbology scanning system for efficiently locating coded symbologies
KR950000944B1 (en) Bar-code reading apparatus
US5050231A (en) Relief image scanner
US5637853A (en) Reading indicia by analysis of different light reflecting portions based on signal-to-noise ratios
EP0369793A2 (en) Bar code reader signal processing method and device
JPS62162181A (en) optical reader
EP0855671A3 (en) Image processing method and apparatus, and image forming apparatus
US5034825A (en) High quality image scanner
US6772948B2 (en) Manual bar code scanner with improved reliability
US4881188A (en) Binary coding circuit
US7354000B2 (en) Method and system for sensing a barcode
JPH0751635Y2 (en) Binary signal reader
JPS61193273A (en) Barcode reader

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
COP Corrected version of pamphlet

Free format text: PAGES 1/14-14/14, DRAWINGS, REPLACED BY NEW PAGES 1/4-14/14; DUE TO LATE TRANSMITTAL BY THE RECEIVING OFFICE

WWE Wipo information: entry into national phase

Ref document number: 1998906733

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2282392

Country of ref document: CA

Ref country code: CA

Ref document number: 2282392

Kind code of ref document: A

Format of ref document f/p: F

ENP Entry into the national phase

Ref country code: JP

Ref document number: 1998 538791

Kind code of ref document: A

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 1998906733

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWG Wipo information: grant in national office

Ref document number: 1998906733

Country of ref document: EP