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    MULTIPLE LASER INDICIA READER OPTIONALLY UTILIZING A CHARGE COUPLED DEVICE (CCD) DETECTOR AND OPERATING METHOD THEREFOR
    41.
    发明专利
    MULTIPLE LASER INDICIA READER OPTIONALLY UTILIZING A CHARGE COUPLED DEVICE (CCD) DETECTOR AND OPERATING METHOD THEREFOR 未知

    公开(公告)号：CA2150747A1

    公开(公告)日：1995-12-31

    申请号：CA2150747

    申请日：1995-06-05

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： LI YAJUN ,  DORAN ROBERT ,  BARILE JOHN

    IPC: G06K7/015 ,  G06K7/10 ,  G06K9/20

    Abstract: An electro-optical scanning device reads indicia having parts of different light reflectivity, including bar codes and matrix arrays such as UPSCODES. The scanning device includes laser or light emitting diodes for emitting at least two light beams of the same or different wavelengths. The light beams may be visible to the human eye, and the beams are optically directed to form one or two scan lines to scan portions of a symbol. Dual photosensor(s) or a charge coupled device detects light reflected from the different portions of the symbol. The charge coupled device can be used to detect either reflected ambient light or the reflected visible light from the beams emitted by the diodes. The photosensors generate signals corresponding to the detected light which can be processed simultaneously. The device is particularly useful in reading two dimensional or more complex symbols. Methods for reading indicia are also described.

    42.
    发明专利
    未知

    公开(公告)号：DE60132057D1

    公开(公告)日：2008-02-07

    申请号：DE60132057

    申请日：2001-08-31

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： DVORKIS PAUL ,  LI YAJUN

    IPC: G02B26/10 ,  G06K7/10 ,  G02B26/00

    Abstract: A first module (10), including a laser for emitting a laser beam and a photodiode for detecting light reflected from a bar code symbol, is independently mounted on a support (14a) in a spaced relation to a second module (12) which includes a movable reflector and a drive for moving the reflector. The reflector is advantageously mounted for oscillation on a pair of taut elements constituting an endless band.

    46.
    发明专利
    未知

    公开(公告)号：DE69433196T2

    公开(公告)日：2004-07-29

    申请号：DE69433196

    申请日：1994-11-11

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BRIDGELALL RAJ ,  KATZ JOSEPH ,  GOREN DAVID P ,  DVORKIS PAUL ,  LI YAJUN

    IPC: G06K7/10

    Abstract: Optical scanning of barcode symbols is carried out first in an aim mode wherein the symbol is scanned using a first scan pattern that is relatively small and dense so as to be visible to the user, and thereafter using a second, larger, more robust scan pattern for decoding. The preferred scanner module has a scanner mirror which is mounted to a bracket by way of a leaf spring, allowing the mirror to oscillate in one direction. This is hung from a stationary chassis by means of two strips of mylar film, which are themselves protected against mechanical shock by pins which pass through holes in the bracket. The pins provide accurate alignment of the bracket with respect to the chassis.

    47.
    发明专利
    未知

    公开(公告)号：DE69433196D1

    公开(公告)日：2003-11-06

    申请号：DE69433196

    申请日：1994-11-11

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BRIDGELALL RAJ ,  KATZ JOSEPH ,  GOREN DAVID P ,  DVORKIS PAUL ,  LI YAJUN

    IPC: G06K7/10

    Abstract: Optical scanning of barcode symbols is carried out first in an aim mode wherein the symbol is scanned using a first scan pattern that is relatively small and dense so as to be visible to the user, and thereafter using a second, larger, more robust scan pattern for decoding. The preferred scanner module has a scanner mirror which is mounted to a bracket by way of a leaf spring, allowing the mirror to oscillate in one direction. This is hung from a stationary chassis by means of two strips of mylar film, which are themselves protected against mechanical shock by pins which pass through holes in the bracket. The pins provide accurate alignment of the bracket with respect to the chassis.

    48.
    发明专利
    未知

    公开(公告)号：DE69528929T2

    公开(公告)日：2003-08-14

    申请号：DE69528929

    申请日：1995-06-30

    Applicant: SYMBOL TECHNOLOGIES INC

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

    IPC: G06K7/015 ,  G06K7/10 ,  G06K7/00

    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.

    49.
    发明专利
    未知

    公开(公告)号：DE69528929D1

    公开(公告)日：2003-01-09

    申请号：DE69528929

    申请日：1995-06-30

    Applicant: SYMBOL TECHNOLOGIES INC

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

    IPC: G06K7/015 ,  G06K7/10 ,  G06K7/00

    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.

    50.
    发明专利
    未知

    公开(公告)号：DE69523376T2

    公开(公告)日：2002-07-11

    申请号：DE69523376

    申请日：1995-06-30

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： JOSEPH EUGENE ,  LI YAJUN ,  HE DUANFENG ,  KATZ JOSEPH ,  SWARTZ JEROME

    IPC: G06K7/10

    Abstract: A plurality of the areas of differing light reflectivity of a bar code symbol (34) or the like are simultaneously illuminated using, for example, a beam of laser light (22) that has an elongate cross-section. The light beam (22) is swept over the symbol to be read in a direction transverse to the elongated dimension of the illuminated region (78) so that a two-dimensional area (42) of the symbol is illuminated over time. The reflected light is sensed by a 1D CCD array (50). A microprocessor (52) within the scanner provides visual feedback to aid a user in aligning the device, and also provides for a selectable aspect ratio for the image, a selectable image resolution and size, a selectable aspect ratio of the illumination, and a selectable pixel size. All of these options may be programmed within the microprocessor (52), enabling the device to read a large variety of two-dimensional symbols.

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