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21.发明专利
公开(公告)号：CA2150730C
公开(公告)日：2006-01-10
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
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.
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公开(公告)号：DE69433783D1
公开(公告)日：2004-06-17
申请号：DE69433783
申请日：1994-09-09
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： KATZ JOSEPH , SWARTZ JEROME , LI YAJUN
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公开(公告)号：AU5793701A
公开(公告)日：2002-03-07
申请号：AU5793701
申请日：2001-08-09
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： DVORKIS PAUL , LI YAJUN , BARKAN EDWARD
Abstract: A compact assembly for electro-optically scanning indicia includes an oscillatable component operative for focusing, and for sweeping, a light beam across the indicia and, optionally, for correcting for scan aberration. A laser diode for emitting the beam is inserted into a central opening surrounded by an electromagnetic coil to conserve space. A magnet on the component interacts with the coil to effect oscillation. A floating flexure returns the component to an equilibrium position.
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公开(公告)号：DE69329312D1
公开(公告)日：2000-10-05
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
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.
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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
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.
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Patent Agency Ranking26.发明专利
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
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.
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公开(公告)号：CA2136046A1
公开(公告)日：1995-05-18
申请号：CA2136046
申请日：1994-11-17
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： BRIDGELALL RAJ , KATZ JOSEPH , GOREN DAVID P , DVORKIS PAUL , LI YAJUN
Abstract: LASER SCANNING SYSTEM COMPACT BAR CODE SCANNING MODULE WITH SHOCK PROTECTION 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.
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公开(公告)号：AU7294994A
公开(公告)日：1995-03-30
申请号：AU7294994
申请日：1994-09-13
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： KATZ JOSEPH , SWARTZ JEROME , LI YAJUN
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公开(公告)号：WO2005018860A3
公开(公告)日：2005-10-27
申请号：PCT/US2004022419
申请日：2004-07-12
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： LI YAJUN
CPC classification number: G06K7/10831 , G06K7/10732 , G06K7/12
Abstract: A green laser beam is generated and is focused and shaped with an asymmetrical beam cross-section in an electro-optical reader for reading indicia. The green laser beam is also used to illuminate an aiming spot or pattern on the indicia prior to reading
Abstract translation: 生成绿色激光束并且在用于读取标记的电光学读取器中用不对称的光束横截面聚焦和成形。 绿色激光束也用于在阅读前照亮标记上的瞄准点或图案
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30.发明申请MONITORING LIGHT BEAM POSITION IN ELECTRO-OPTICAL READERS AND IMAGE PROJECTORS 审中-公开在光电读取器和图像投影仪中监控光束位置
公开(公告)号：WO2006039472A2
公开(公告)日：2006-04-13
申请号：PCT/US2005035163
申请日：2005-09-28
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： LI YAJUN , DVORKIS PAUL , YAVID DMITRIY , WOOD FREDERICK F , STERN MIKLOS , BARKAN EDWARD , NAMBUDRI NARAYAN
IPC: G06K7/10
CPC classification number: G06K7/10702 , G06K7/10683
Abstract: An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.
Abstract translation: 用于确定电光读取器，图像投影仪等装置中的光束位置的装置包括用于以扫描线跨扫描频率移动扫描光束的驱动器，以及电光反馈组件，其可操作地连接到 驱动器，用于在光束移动期间光学检测扫描线位置，并且用于在扫描频率处产生反馈信号，反馈信号指示扫描线位置。 消除驱动器中的反馈线圈，以避免驱动器中多个线圈之间的电磁耦合。
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