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    51.
    发明专利
    未知

    公开(公告)号：DE69522863T2

    公开(公告)日：2002-05-29

    申请号：DE69522863

    申请日：1995-06-30

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： LI YAJUN ,  DORAN ROBERT ,  BARILE JOHN

    IPC: G06K7/015 ,  G06K7/10 ,  H01J3/16 ,  G02B26/10

    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.

    52.
    发明专利
    未知

    公开(公告)号：DE69330330D1

    公开(公告)日：2001-07-19

    申请号：DE69330330

    申请日：1993-09-30

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BARD SIMON ,  KATZ JOSEPH ,  STERN MIKLOS ,  LI YAJUN

    IPC: G06K7/10 ,  G09C5/00

    Abstract: The laser diode (133) of an optical scanning system (100) is located in a separate unit (130) and light therefrom carried to a remote scan head (110) via an optical fiber (150). This reduces the size and weight of the scan head (110) and reduces the temperature sensitivity of the scan head (110). The scan head (110) may include an optical sensor (117) for detecting light reflected from scanned symbols.

    53.
    发明专利
    未知

    公开(公告)号：DE69329312T2

    公开(公告)日：2001-04-12

    申请号：DE69329312

    申请日：1993-06-11

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BARD SIMON ,  LI YAJUN ,  SWARTZ JEROME ,  METLITSKY BORIS ,  KATZ JOSEPH ,  STRATIENCO ASKLOD ,  CHARYCH HAL

    IPC: G02B26/10 ,  G06F1/16 ,  G06F3/033 ,  G06K7/10 ,  G07F7/02 ,  G07G1/00

    Abstract: To reduce the size and weight of an optical scanner, the present invention provides a mirrorless beam scanning unit. In some embodiments, the light emitter itself moves back and forth, and in other embodiments the objective lens reciprocates laterally in front of the light emitter. For example, a flexible support structure, such as one or more strips of mylar, movably mounts the objective lens in front of the light emitter. The objective lens is laterally reciprocated in response to a motive force, for example as might be applied by a combination of a permanent magnet coupled to the objective lens and a fixedly mounted electromagnet driven by an alternating current signal. Reciprocation of the objective lens during emission of light by the light emitter causes the light to scan a surface, such as a surface bearing a bar code label.

    55.
    发明专利
    未知

    公开(公告)号：AT196025T

    公开(公告)日：2000-09-15

    申请号：AT93109378

    申请日：1993-06-11

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BARD SIMON ,  LI YAJUN ,  SWARTZ JEROME ,  METLITSKY BORIS ,  KATZ JOSEPH ,  STRATIENCO ASKLOD ,  CHARYCH HAL

    IPC: G02B26/10 ,  G06F1/16 ,  G06F3/033 ,  G06K7/10 ,  G07F7/02 ,  G07G1/00

    Abstract: To reduce the size and weight of an optical scanner, the present invention provides a mirrorless beam scanning unit. In some embodiments, the light emitter itself moves back and forth, and in other embodiments the objective lens reciprocates laterally in front of the light emitter. For example, a flexible support structure, such as one or more strips of mylar, movably mounts the objective lens in front of the light emitter. The objective lens is laterally reciprocated in response to a motive force, for example as might be applied by a combination of a permanent magnet coupled to the objective lens and a fixedly mounted electromagnet driven by an alternating current signal. Reciprocation of the objective lens during emission of light by the light emitter causes the light to scan a surface, such as a surface bearing a bar code label.

    METHOD AND APPARATUS FOR READING TWO-DIMENSIONAL BAR CODE SYMBOLS WITH AN ELONGATED LASER LINE
    57.
    发明专利
    METHOD AND APPARATUS FOR READING TWO-DIMENSIONAL BAR CODE SYMBOLS WITH AN ELONGATED LASER LINE 未知

    公开(公告)号：CA2134699A1

    公开(公告)日：1995-05-18

    申请号：CA2134699

    申请日：1994-10-31

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： SWARTZ JEROME ,  LI YAJUN ,  DVORKIS PAUL ,  SPITZ GLENN

    IPC: G06K7/10 ,  G06K7/14 ,  G06K9/18

    Abstract: METHOD AND APPARATUS FOR READING TWO-DIMENSIONAL BAR CODE SYMBOLS WITH AN ELONGATED LASER LINE A plurality of the areas of different light reflectivity of a bar code symbol, or the like, are simultaneously illuminated, using, e.g., a beam of laser light that has an elongated cross-section. The laser light beam is swept over the symbol in a direction transverse to the elongated dimension of the illuminated region so that a two-dimensional area of the symbol is illuminated over time, until the symbol is read. The light that reflects from the illuminated region of the symbol is imaged on a linear sensor array, which is then scanned or read out to produce signals representative of spatial intensity variations of the imaged light along a linear path in the field of view.

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