中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

280 records (took 0.056 seconds)

    94.
    发明专利
    未知

    公开(公告)号：DE69131062D1

    公开(公告)日：1999-05-06

    申请号：DE69131062

    申请日：1991-06-28

    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.

    95.
    发明专利
    未知

    公开(公告)号：DE69130949D1

    公开(公告)日：1999-04-08

    申请号：DE69130949

    申请日：1991-12-30

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BARKAN EDWARD ,  GOREN DAVID P ,  KATZ JOSEPH ,  LI YAJUN ,  SWARTZ JEROME ,  MAZZ THOMAS

    IPC: G06K7/015 ,  G06K7/10 ,  G06K7/14

    Abstract: The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result.

    APPARATUS AND METHOD FOR READING INDICIA USING CHARGE COUPLED DEVICE AND SCANNING LASER BEAM TECHNOLOGY
    98.
    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.

Patent Agency Ranking