CA2150730A1 - Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology - Google Patents

Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology

Info

Publication number
CA2150730A1
CA2150730A1 CA002150730A CA2150730A CA2150730A1 CA 2150730 A1 CA2150730 A1 CA 2150730A1 CA 002150730 A CA002150730 A CA 002150730A CA 2150730 A CA2150730 A CA 2150730A CA 2150730 A1 CA2150730 A1 CA 2150730A1
Authority
CA
Canada
Prior art keywords
indicia
light
sensor
portions
scanning device
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.)
Granted
Application number
CA002150730A
Other languages
French (fr)
Other versions
CA2150730C (en
Inventor
Yajun Li
Joseph Katz
Jerome Swartz
Daniel R. Mcglynn
Edward Barkan
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.)
Symbol Technologies LLC
Original Assignee
Yajun Li
Joseph Katz
Jerome Swartz
Daniel R. Mcglynn
Edward Barkan
Symbol Technologies, 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 Yajun Li, Joseph Katz, Jerome Swartz, Daniel R. Mcglynn, Edward Barkan, Symbol Technologies, Inc. filed Critical Yajun Li
Publication of CA2150730A1 publication Critical patent/CA2150730A1/en
Application granted granted Critical
Publication of CA2150730C publication Critical patent/CA2150730C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544Methods 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
    • G06K7/10821Methods 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
    • G06K7/1092Methods 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544Methods 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
    • G06K7/10792Special measures in relation to the object to be scanned
    • G06K7/10801Multidistance reading
    • G06K7/10811Focalisation
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2207/00Other aspects
    • G06K2207/1011Aiming
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2207/00Other aspects
    • G06K2207/1018Source control

Abstract

A scanning device for reading indicia of differing light reflectivity, including bar code or matrix array symbols, has a single light emitter, such as a laser or light emitting diode, for generating a scanning light beam to visually illuminate sequential portions of the indicia. A sensor, such as a charge coupled or other solid state imaging device, simultaneously detects light reflected from portions of the indicia and generates an electrical signal representative of the spacial intensity variations the portions of the indicia. The scanning device may also include an ambient light sensor, range finder, a second light emitter for use only in aiming or orienting the scanning device. A photodetector may also be provided to separately detect one symbol virtually simultaneous with the detection of another symbol by the sensor or to provide dual modalities. A method for reading indicia is also provided.
CA002150730A 1994-06-30 1995-06-05 Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology Expired - Fee Related CA2150730C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/269,170 US5672858A (en) 1994-06-30 1994-06-30 Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology
US269,170 1994-06-30

Publications (2)

Publication Number Publication Date
CA2150730A1 true CA2150730A1 (en) 1995-12-31
CA2150730C CA2150730C (en) 2006-01-10

Family

ID=23026105

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002150730A Expired - Fee Related CA2150730C (en) 1994-06-30 1995-06-05 Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology

Country Status (5)

Country Link
US (3) US5672858A (en)
EP (1) EP0690401B1 (en)
JP (1) JP3792753B2 (en)
CA (1) CA2150730C (en)
DE (1) DE69528929T2 (en)

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JP3792753B2 (en) 2006-07-05
EP0690401A2 (en) 1996-01-03
DE69528929T2 (en) 2003-08-14
EP0690401B1 (en) 2002-11-27
CA2150730C (en) 2006-01-10
US5672858A (en) 1997-09-30
DE69528929D1 (en) 2003-01-09
EP0690401A3 (en) 1996-08-21
US6123264A (en) 2000-09-26
JPH0816699A (en) 1996-01-19
US6398112B1 (en) 2002-06-04

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