WO1996013799A3 - Dataform readers and methods - Google Patents

Dataform readers and methods Download PDF

Info

Publication number
WO1996013799A3
WO1996013799A3 PCT/US1995/014219 US9514219W WO9613799A3 WO 1996013799 A3 WO1996013799 A3 WO 1996013799A3 US 9514219 W US9514219 W US 9514219W WO 9613799 A3 WO9613799 A3 WO 9613799A3
Authority
WO
WIPO (PCT)
Prior art keywords
lines
sensor elements
exposure
line
successive
Prior art date
Application number
PCT/US1995/014219
Other languages
French (fr)
Other versions
WO1996013799A2 (en
Inventor
Ynjiun P Wang
Paul P Ju
Original Assignee
Metanetics 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23298920&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1996013799(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Metanetics Corp filed Critical Metanetics Corp
Priority to AU39728/95A priority Critical patent/AU702396B2/en
Priority to DE69524569T priority patent/DE69524569T2/en
Priority to JP8514851A priority patent/JPH11514461A/en
Priority to CA002179154A priority patent/CA2179154C/en
Priority to EP95937700A priority patent/EP0737341B1/en
Publication of WO1996013799A2 publication Critical patent/WO1996013799A2/en
Publication of WO1996013799A3 publication Critical patent/WO1996013799A3/en
Priority to MXPA/A/1996/002547A priority patent/MXPA96002547A/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K7/1092—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 by means of TV-scanning
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K7/10554—Moving beam scanning
    • G06K7/10564—Light sources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K7/10712—Fixed beam scanning
    • G06K7/10722—Photodetector array or CCD scanning
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K7/10712—Fixed beam scanning
    • G06K7/10722—Photodetector array or CCD scanning
    • G06K7/10752—Exposure time control
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Artificial Intelligence (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Facsimile Heads (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Image Input (AREA)

Abstract

Dataform readers and methods provide operation with a sequence of overlapping exposure periods for successive lines of sensor elements of an array. Also, the exposure periods for successive lines of sensor elements, or successive subsets of lines, can be independently determined. In operation of a dataform reader illumination of a target area (210) is turned on before exposure of the first line of sensor elements (222A), each line of sensor elements is exposed by reflected illumination in an exposure period which overlaps with the exposure period of one or more other lines, and illumination is then turned off (228). Using a CMOS construction, for example, the level of image signals read from one line of sensor elements is referred to a look-up table to determine an appropriate exposure period for a subsequent line or lines of elements of an array. This process is repeated to achieve exposure periods adjusted for localized exposure conditions for each successive line or subset of lines of sensor elements.
PCT/US1995/014219 1994-10-31 1995-10-31 Dataform readers and methods WO1996013799A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU39728/95A AU702396B2 (en) 1994-10-31 1995-10-31 Dataform readers and methods
DE69524569T DE69524569T2 (en) 1994-10-31 1995-10-31 DATA FORM READER AND PROCEDURE
JP8514851A JPH11514461A (en) 1994-10-31 1995-10-31 Data form reader and method
CA002179154A CA2179154C (en) 1994-10-31 1995-10-31 Dataform readers and methods
EP95937700A EP0737341B1 (en) 1994-10-31 1995-10-31 Dataform readers and methods
MXPA/A/1996/002547A MXPA96002547A (en) 1994-10-31 1996-06-28 Readers and methods to read da formats

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/332,592 1994-10-31
US08/332,592 US5521366A (en) 1994-07-26 1994-10-31 Dataform readers having controlled and overlapped exposure integration periods

Publications (2)

Publication Number Publication Date
WO1996013799A2 WO1996013799A2 (en) 1996-05-09
WO1996013799A3 true WO1996013799A3 (en) 1996-06-27

Family

ID=23298920

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/014219 WO1996013799A2 (en) 1994-10-31 1995-10-31 Dataform readers and methods

Country Status (6)

Country Link
US (2) US5521366A (en)
EP (1) EP0737341B1 (en)
JP (1) JPH11514461A (en)
AU (1) AU702396B2 (en)
DE (1) DE69524569T2 (en)
WO (1) WO1996013799A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN105637526A (en) * 2013-08-26 2016-06-01 讯宝科技公司 Method of controlling exposure on barcode imaging scanner with rolling shutter sensor

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MX9602547A (en) 1997-07-31
DE69524569T2 (en) 2002-08-01
JPH11514461A (en) 1999-12-07
AU3972895A (en) 1996-05-23
US5521366A (en) 1996-05-28
WO1996013799A2 (en) 1996-05-09
DE69524569D1 (en) 2002-01-24
US5646390A (en) 1997-07-08
EP0737341A1 (en) 1996-10-16
AU702396B2 (en) 1999-02-18

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