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公开(公告)号：AU780839B2
公开(公告)日：2005-04-21
申请号：AU6362401
申请日：2001-08-23
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： DVORKIS PAUL , LI YAJUN
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.
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公开(公告)号：DE69523376D1
公开(公告)日：2001-11-29
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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公开(公告)号：AT202230T
公开(公告)日：2001-06-15
申请号：AT93115821
申请日：1993-09-30
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： BARD SIMON , KATZ JOSEPH , STERN MIKLOS , LI YAJUN
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.
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公开(公告)号：DE69424248D1
公开(公告)日：2000-06-08
申请号：DE69424248
申请日：1994-09-28
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： SWARTZ JEROME , STERN MIKLOS , KATZ JOSEPH , LI YAJUN
Abstract: An integrated scanner for scanning a barcode is formed on a common substrate. The scanner may include a micro-machined mirror, a laser diode, and a detector, mounted on a single substrate or several connected substrates. Lenses can be used to focus a laser beam from the laser diode as well as expand a laser beam deflected by the micro-machined mirror. The scanner may also scan a barcode without using a micro-machined mirror by rotating the laser diode.
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公开(公告)号：DE69230751D1
公开(公告)日：2000-04-13
申请号：DE69230751
申请日：1992-12-23
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： LI YAJUN , KATZ JOSEPH , DVORKIS PAUL , MARWIN GREGG
IPC: G06K7/10
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Patent Agency Ranking
公开(公告)号：DE69130949T2
公开(公告)日：1999-10-07
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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公开(公告)号：AT177226T
公开(公告)日：1999-03-15
申请号：AT91122399
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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公开(公告)号：AU7596194A
公开(公告)日：1995-05-11
申请号：AU7596194
申请日：1994-10-20
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： SWARTZ JEROME , STERN MIKLOS , KATZ JOSEPH , LI YAJUN
Abstract: An integrated scanner for scanning a barcode is formed on a common substrate. The scanner may include a micro-machined mirror, a laser diode, and a detector, mounted on a single substrate or several connected substrates. Lenses can be used to focus a laser beam from the laser diode as well as expand a laser beam deflected by the micro-machined mirror. The scanner may also scan a barcode without using a micro-machined mirror by rotating the laser diode.
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公开(公告)号：DE69435305D1
公开(公告)日：2010-09-02
申请号：DE69435305
申请日：1994-11-11
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： BRIDGELALL RAJ , KATZ JOSEPH , DVORKIS PAUL , LI YAJUN , GOREN DAVID P
IPC: G06K7/10
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公开(公告)号：DE60130950T2
公开(公告)日：2008-07-24
申请号：DE60130950
申请日：2001-08-31
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： DVORKIS PAUL , BARKAN EDWARD , LI YAJUN
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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