公开(公告)号：EP1723576B1

公开(公告)日：2011-09-21

申请号：EP05723764.6

申请日：2005-02-28

Applicant: Symbol Technologies, Inc.

Inventor： HE, Duanfeng ,  JOSEPH, Eugene, B.

IPC: G06K7/00 ,  G02F1/00 ,  G02B6/00

CPC classification number: G06K7/10732

Abstract: An optical code reading system and method is provided for reading optical codes imprinted on reflective surfaces. The system includes a plurality of light sources, an image sensor, a processor and a decoder. The plurality of light sources includes extended light sources and direct point light sources directed to illuminate the optical code, such as a direct mark optical code. The image sensor detects the reflected light from the optical code and generates an image. The processor analyzes the image and determines the code-type of the image. The data is then decoded by a decoder.

公开(公告)号：EP1894141B1

公开(公告)日：2010-02-17

申请号：EP06760451.2

申请日：2006-05-25

Applicant: Symbol Technologies, Inc.

Inventor： HE, Duanfeng

IPC: G06K7/14

CPC classification number: G06K7/1443 ,  G06K7/14 ,  G06K7/1465

公开(公告)号：EP1836646A1

公开(公告)日：2007-09-26

申请号：EP05852991.8

申请日：2005-12-02

Applicant: Symbol Technologies, Inc.

Inventor： EUGENE, Joseph ,  HE, Duanfeng

IPC: G06K7/10

CPC classification number: G06K7/14 ,  G06K7/1417 ,  G06K7/1443 ,  G06K7/1456 ,  G06K2207/1011

Abstract: A two dimensional symbol is decoded by forming a binary image that includes the symbol. The binary image may be constructed by first forming a contrast image of the symbol and binarizing the contrast image. The binary is used to generate symbol margins for use in digitization. By using the binary image to determine the symbol margins, margins can be located efficiently and in the presence of symbol contrast variation caused by irregularities in the marked surface or light source angles. Digitization proceeds based on the determined margins.

公开(公告)号：EP1021784A1

公开(公告)日：2000-07-26

申请号：EP99928606.5

申请日：1999-06-11

Applicant: SYMBOL TECHNOLOGIES, INC.

Inventor： CORREA, Mark ,  GELLES, Rubin ,  HE, Duanfeng ,  JOSEPH, Eugene ,  LI, Yajun ,  PATEL, Mehul ,  STANKELIS, Thomas, A.

IPC: G06K7/10

CPC classification number: G06K7/10811 ,  G06K7/10722 ,  G06K2207/1011

Abstract: An imaging engine (10) and signal processing devices (72) and methods are disclosed for reading various kinds of optical codes. The compact structure (54') may include a two-dimensional image sensor, apparatus for focusing images at different focal disclosures, an aiming system, a hi-low beam illumination system and related signal processing circuits.

公开(公告)号：EP2633473A1

公开(公告)日：2013-09-04

申请号：EP11770285.2

申请日：2011-09-30

Applicant: Symbol Technologies, Inc.

Inventor： HE, Duanfeng ,  SHETH, Maulin S.

IPC: G06K7/14

Abstract: A method of decoding the barcode in a form with a barcode reading arrangement. The barcode reading arrangement comprises a solid-state imager. The method includes capturing an image of a form having a barcode with a barcode reading arrangement, storing the image of the form captured by the solid-state imager to a memory, and finding a reference box in the image of the form by traversing one of connected lines and connected edges in the image of the form. The method also includes processing the image of the form to improve the image of the form by transforming the reference box to a rectangle, and processing an image of the barcode in the rectangle for decoding the barcode.

公开(公告)号：EP2218036A1

公开(公告)日：2010-08-18

申请号：EP08853851.7

申请日：2008-11-10

Applicant: Symbol Technologies, Inc.

Inventor： YU, Ming ,  LIU, Rong ,  HE, Duanfeng

IPC: G06K9/00

CPC classification number: G06K7/10732 ,  G02B3/0062 ,  G02B27/0966 ,  G06K7/10742 ,  G06K2207/1011

Abstract: An illumination apparatus for an imaging-based bar code reader having a field of view defined by an imaging system of the bar code reader directed toward a target bar code. The illumination apparatus includes: a collector cup comprising a compound parabolic concentrator and defining a longitudinal axis; an illumination source positioned to direct illumination toward a first end of the collector cup, the collector cup directing illumination from the illumination source toward a second end of the collector cup; a first lens array positioned at the second end of the collector cup orthogonal to the collector cup longitudinal axis to receive and focus illumination from the collector cup and a second lens array orthogonal to the collector cup longitudinal axis receiving focused illumination from the first lens array. The lens arrays combining to focus illumination from the collector cup into an illumination pattern.

公开(公告)号：EP1831816A2

公开(公告)日：2007-09-12

申请号：EP05853210.2

申请日：2005-12-06

Applicant: Symbol Technologies, Inc.

Inventor： HE, Duanfeng ,  JOSEPH, Eugene

IPC: G06K7/10

CPC classification number: G06K7/10732 ,  G06K19/06009 ,  G06K19/063

Abstract: Methods and apparatus for illuminating objects comprising asymmetrically illuminating an object using an illumination medium on one side of an optical module of an information capturing module, capturing an electronic representation of the object and decoding the electronic representation of said object. In alternate embodiments, the scanner successively illuminates the object from a plurality of different angles until the object and/or dataform is decoded. The illumination medium can be external to the information capturing module.

公开(公告)号：EP1573647A1

公开(公告)日：2005-09-14

申请号：EP03814091.9

申请日：2003-12-17

Applicant: SYMBOL TECHNOLOGIES, INC.

Inventor： HE, Duanfeng

IPC: G06K7/00 ,  G06K19/08

CPC classification number: G06K7/10851 ,  G06K7/0004 ,  G06K7/0008 ,  G06K7/10386 ,  G06K7/10722 ,  G06K9/228 ,  G06K9/726 ,  G06K19/14 ,  G06K2209/01

Abstract: A system and method are provided for sensing an image of an object and an optical code associated with the object and generating respective object image data and optical code image data. A database stores a plurality of digital codes and an object image data entry associated with each respective digital code of the plurality of digital codes. A processing unit generates at least one digital code; accesses at least one object image data entry associated with at least one respective stored digital code that substantially matches the respective at least one generated digital code; and compares the object image data with the at least one accessed object image data entry and determines if the comparison results are within a predetermined image recognition certainty threshold. An RFID reader and imaging system is also provided having a device for imaging an object associated with a tag whose RFID code is read by an RFID reader. The imaging device generates image data associated with the imaged object. The system further includes a database storing RFID codes associated with a plurality of objects and complete or extracted image data associated with each stored RFID code. Verification software executable on at least one processor of the system is provided for verifying whether the RFID code presented to be read and processed by the RFID reader and imaging system corresponds to the imaged object. The process of verification is performed by comparing the acquired image data or other data associated with the imaged object with the stored image data or other stored data corresponding with the RFID code read. If the acquired image data or other data substantially matches the stored image data or other stored data, then the system verifies that the appropriate RFID code was read. If the acquired image data or other data does not substantially match the stored image data or other stored data, then the system verifies that the appropriate RFID code was not read, or that the system contains an error.

公开(公告)号：EP2795532A1

公开(公告)日：2014-10-29

申请号：EP12809947.0

申请日：2012-12-14

Applicant: Symbol Technologies, Inc.

Inventor： HE, Duanfeng ,  GUREVICH, Vladimir ,  GOREN, David P. ,  FAN, Nong-Qiang

IPC: G06K7/10

CPC classification number: G06K7/14 ,  G06K7/10722 ,  G06K7/10811

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.

公开(公告)号：EP1086439B1

公开(公告)日：2009-10-21

申请号：EP00923162.2

申请日：2000-04-07

Applicant: Symbol Technologies, Inc.

Inventor： JOSEPH, Eugene ,  HE, Duanfeng

IPC: G06K7/10 ,  G06K7/14 ,  B07C3/18

CPC classification number: G06K7/1443 ,  G06K7/14

Abstract: A method and apparatus for identifying and reading a postal code (12) with ascender bars (4), descender bars (5), full bars (6), and clock bars (7), includes a hand held code reader (10). An image of the postal code is reprocessed by determining the orientation and position within an image and then is read and decoded. The system is capable of discriminating between different formats of code patterns.