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    SYSTEM AND METHOD FOR AUTO FOCUSING AN OPTICAL CODE READER
    11.
    发明专利
    SYSTEM AND METHOD FOR AUTO FOCUSING AN OPTICAL CODE READER 未知

    公开(公告)号：CA2508035A1

    公开(公告)日：2004-07-15

    申请号：CA2508035

    申请日：2003-12-17

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： HATTON EDWARD ,  BREYTMAN ALEX ,  DVORKIS PAUL ,  KRICHEVER MARK ,  PATEL MEHUL ,  BIANCULLI THOMAS D ,  CARLSON BRADLEY S ,  YAVID DMITRIY

    IPC: G06K7/00 ,  G06K7/10 ,  G06K19/14

    Abstract: An optical code reader (12) is provided including imaging circuitry (10) having an array (106) of photo sensing devices (200) capable of sensing ligh t incident on the array and outputting a plurality of pixel signals (502) corresponding to the sensed light. The reader further includes control and logic circuitry for receiving a subset of the plurality of pixel signals, processing the received subset of the plurality of pixel signals for determining if the received pixel signals meet at least one predetermined condition, and outputting a selection control signal in accordance with the processing results. A focus analysis software module executable by the contr ol and logic circuitry determines the focus quality of the received pixel signals. A selector control software module executable by the control and logic circuitry generates a selection control signal in accordance with the determined focus quality of the received pixel signals. Selector circuitry selectively enables the imaging circuitry to output selected pixel signals o f the plurality of pixel signals in accordance with the selection control sign al.

    15.
    发明专利
    未知

    公开(公告)号：DE112006001085T5

    公开(公告)日：2008-03-20

    申请号：DE112006001085

    申请日：2006-04-20

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： YAVID DMITRIY ,  STERN MIKLOS

    IPC: G03B21/56

    Abstract: An image projection module within a housing is operative for causing selected pixels in a raster pattern to be illuminated to produce an image on a display screen of VGA quality. The screen is modified and/or the bandwidth of a laser is increased, to reduce speckle noise in the image.

    SYSTEM AND METHOD FOR AUTO FOCUSING AN OPTICAL CODE READER
    17.
    发明专利
    SYSTEM AND METHOD FOR AUTO FOCUSING AN OPTICAL CODE READER 未知

    公开(公告)号：CA2508035C

    公开(公告)日：2008-01-29

    申请号：CA2508035

    申请日：2003-12-17

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BREYTMAN ALEX ,  YAVID DMITRIY ,  KRICHEVER MARK ,  HATTON EDWARD ,  DVORKIS PAUL ,  PATEL MEHUL ,  CARLSON BRADLEY S ,  BIANCULLI THOMAS D

    IPC: G06K7/10 ,  G06K7/00 ,  G06K19/14

    Abstract: An optical code reader is provided including imaging circuitry having an arr ay of photo sensing devices capable of sensing light incident on the array and outputting a plurality of pixel signals corresponding to the sensed light. The reader further includes control and logic circuitry for receiving a subset of the plurality of pixel signals, processing the received subset of the plurality of pixel signals for determining if the received pix el signals meet at least one predetermined condition, and outputting a selection control signal in accordance with the processing results. A focus analysis software module executable by the control and logic circuitry determines the focus quality of the received pixel signals. A selector control software module executable by the control and logic circuitry generates a selection control signal in accordance with the determined focus quality of the received pixel signals. Selector circuitry selectively enables the imaging circuitry to output selected pixel signals of the plurality of pixel signals in accordance with the selection control signal.

    LARGE SIZE IMAGE PROJECTION
    18.
    发明专利
    LARGE SIZE IMAGE PROJECTION 未知

    公开(公告)号：CA2582399A1

    公开(公告)日：2006-05-11

    申请号：CA2582399

    申请日：2005-09-28

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： GOLDMAN RON ,  WOOD FREDERICK F ,  YAVID DMITRIY ,  TAN CHINH ,  DVORKIS PAUL

    IPC: G03B21/00

    Abstract: A plurality of image projection modules is operative for causing selected pixels in overlapping raster patterns to be illuminated to produce a large size image of high resolution of VGA quality in monochrome or color. The selected pixels in an overlap region of the patterns are illuminated at a lesser intensity to provide uniform brightness over the image. Multiple single mode lasers, or a multimode laser with an aperture stop, are employed to increase laser output power. Speckle noise is reduced by controlling the optical transmission characteristic of a projection screen. Three-dimensional images are generated by moving the screen. Cross-coupling between drive and feedback mechanisms in image projection is reduced for better image quality.

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