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    APPARATUS AND METHOD FOR READING INDICIA USING CHARGE COUPLED DEVICE AND SCANNING LASER BEAM TECHNOLOGY
    142.
    发明专利
    APPARATUS AND METHOD FOR READING INDICIA USING CHARGE COUPLED DEVICE AND SCANNING LASER BEAM TECHNOLOGY 未知

    公开(公告)号：CA2150730A1

    公开(公告)日：1995-12-31

    申请号：CA2150730

    申请日：1995-06-05

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： LI YAJUN ,  KATZ JOSEPH ,  SWARTZ JEROME ,  MCGLYNN DANIEL R ,  BARKAN EDWARD

    IPC: G06K7/015 ,  G06K7/10

    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.

    Method of operating a bar code scanner
    145.
    发明专利
    Method of operating a bar code scanner 未知

    公开(公告)号：GB2246653B

    公开(公告)日：1995-02-15

    申请号：GB9112224

    申请日：1991-06-06

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： METLITSKY BORIS ,  SWARTZ JEROME ,  BARKAN EDWARD ,  SHEPARD HOWARD ,  GOREN DAVID ,  BIUSO TONY

    IPC: G02B26/10 ,  G06K7/10 ,  G06K7/14

    Abstract: A portable scanning head emits and receives light from a light-emitting diode (10) to read symbols, such as bar-code symbols. The optics (12,18) within the scanner are operative for focusing a light beam (11) and the view of a light sensor (17) in different planes (13,22) exteriorly of a scanner housing. Imaging means are provided in the unit for imaging a viewing window. The viewing window has an area smaller than that of the scan spot. The system can employ an LED (10) as a light source and tolerate the relatively large-sized (on the order of millimeters) scan spot without sacrificing reading performance since the photodiode (17) "sees" only that portion of the scan spot visible through the viewing window.

    LASER DIODE SCANNER WITH MINIMIZED POWER CONSUMPTION, MINIMIZED DEAD ZONE, AND INCREASED SAFETY
    147.
    发明专利
    LASER DIODE SCANNER WITH MINIMIZED POWER CONSUMPTION, MINIMIZED DEAD ZONE, AND INCREASED SAFETY 未知

    公开(公告)号：CA1331808C

    公开(公告)日：1994-08-30

    申请号：CA614733

    申请日：1989-09-29

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BARKAN EDWARD

    IPC: G06K7/10

    Abstract: A laser diode in a scanner is deactuated during part of each scan to conserve power and to increase the working lifetime of the diode and of a battery for powering the scanner. The dead zone in which specular reflection may prevent a successful reading of the symbol is minimized. The scanner includes a head which cannot be disassembled unless an electrical cable connecting the head to the remainder of the scanner is first removed.

    150.
    发明专利
    未知

    公开(公告)号：DE4125899A1

    公开(公告)日：1992-02-06

    申请号：DE4125899

    申请日：1991-08-05

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： METLITSKY BORIS ,  SWARTZ JEROME ,  BARKAN EDWARD ,  SHEPARD HOWARD M ,  GOREN DAVID ,  BIUSO TONY

    IPC: G02B26/10 ,  G06K7/10

    Abstract: A portable scanning head emits and receives light from a light-emitting diode (10) to read symbols, such as bar-code symbols. The optics (12,18) within the scanner are operative for focusing a light beam (11) and the view of a light sensor (17) in different planes (13,22) exteriorly of a scanner housing. Imaging means are provided in the unit for imaging a viewing window. The viewing window has an area smaller than that of the scan spot. The system can employ an LED (10) as a light source and tolerate the relatively large-sized (on the order of millimeters) scan spot without sacrificing reading performance since the photodiode (17) "sees" only that portion of the scan spot visible through the viewing window.

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