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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：DE602005002268T2
公开(公告)日：2008-05-29
申请号：DE602005002268
申请日：2005-05-26
Applicant: SYMBOL TECHNOLOGIES INC , GOREN DAVID P
Inventor： ZENG GUANG , GOREN DAVID P
Abstract: A method for estimating a location of a wireless device in a wireless local network is provided. The method includes forming a first set comprised of the signal strength received from access points that the wireless device received a signal from and an indicator of no signal strength measured for access points that the wireless device did not receive a signal from. Next, a scan subset can be formed comprised of access points in the first set that has associated signal strength. Next, a cluster comprised of the calibration points can be formed based on the scan subset. A distance between the first set and each of the calibration point in the cluster can be calculated. Then, the smallest distance can be selected as the location estimate.
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公开(公告)号：DE69131573D1
公开(公告)日：1999-10-07
申请号：DE69131573
申请日：1991-12-30
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： DVORKIS PAUL , GOREN DAVID P , SPITZ GLENN S , MCGLYNN DANIEL R
IPC: G06K7/10
Abstract: A system for reading bar code symbols or the like, having a scanner for generating a laser beam directed toward a target and producing a narrow first raster scanning pattern that enables the user to manually aim and direct the beam to the location desired by the user and a relatively wider second raster scanning pattern that sweeps an entire symbol to be read, and a detector for receiving reflected light from such symbol to produce electrical signals corresponding to data represented by such symbol.
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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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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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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：CA2859783A1
公开(公告)日：2013-06-27
申请号：CA2859783
申请日：2012-12-14
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： HE DUANFENG , GUREVICH VLADIMIR , GOREN DAVID P , FAN NONG-QIANG
IPC: G06K7/10
Abstract: A method of imaging a target object with an imaging reader. The method includes the following: (1) detecting light from the target object through a lens arrangement with an image sensor to generate light-field data; (2) generating a stream of image data including image data representing an expected in focus image of the target object, and (3) processing the expected in focus image of the target object to decode a barcode on the target object. The image sensor includes an array of photosensitive elements and an array of microlenses that overlays the array of photosensitive elements located at a focus plane of the microlens.
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公开(公告)号：CA2568038A1
公开(公告)日：2005-12-15
申请号：CA2568038
申请日：2005-05-26
Applicant: SYMBOL TECHNOLOGIES INC
Inventor： ZENG GUANG , GOREN DAVID P , VU HOAI XUAN
Abstract: A method for estimating a location of a wireless device in a wireless local network is provided. The method includes forming a first set comprised of the signal strength received from access points that the wireless device received a signal from and an indicator of no signal strength measured for access points that the wireless device did not receive a signal from. Next, a scan subset can be formed comprised of access points in the first set that has associated signal strength. Next, a cluster comprised of the calibration points can be formed based on the scan subset. A distance between the first set and each of the calibration point in the cluster can be calculated. Then, the smallest distance can be selected as the location estimate.
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公开(公告)号：AU2005250881A1
公开(公告)日：2005-12-15
申请号：AU2005250881
申请日：2005-05-26
Applicant: GOREN DAVID P , SYMBOL TECHNOLOGIES INC
Inventor： GOREN DAVID P , ZENG GUANG
Abstract: A method for estimating a location of a wireless device in a wireless local network is provided. The method includes forming a first set comprised of the signal strength received from access points that the wireless device received a signal from and an indicator of no signal strength measured for access points that the wireless device did not receive a signal from. Next, a scan subset can be formed comprised of access points in the first set that has associated signal strength. Next, a cluster comprised of the calibration points can be formed based on the scan subset. A distance between the first set and each of the calibration point in the cluster can be calculated. Then, the smallest distance can be selected as the location estimate.
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