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1. US20070114285 - 2D coding and decoding barcode and its method thereof

Office United States of America
Application Number 11652981
Application Date 12.01.2007
Publication Number 20070114285
Publication Date 24.05.2007
Grant Number 7497380
Grant Date 03.03.2009
Publication Kind B2
IPC
G06K 7/10
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
G06K 19/06
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
G06K 9/36
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
G06K 9/80
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
80Combination of image preprocessing and recognition functions
CPC
G06K 19/06037
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
06009with optically detectable marking
06037multi-dimensional coding
G06K 7/1417
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers, ; e.g. for reading patterns
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
14using light without selection of wavelength, e.g. sensing reflected white light
1404Methods for optical code recognition
1408the method being specifically adapted for the type of code
14172D bar codes
G06K 19/06056
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
06009with optically detectable marking
06046Constructional details
06056the marking comprising a further embedded marking, e.g. a 1D bar code with the black bars containing a smaller sized coding
Applicants Shenzhen SYSCAN Technology Co., Ltd.
Inventors Chang Zhiguo
Wang Peng
Lv Yingfeng
Zhang Fu
Ding Xiaoyun
Agents Chan Raymond Y.
David and Raymond Patent Firm
Title
(EN) 2D coding and decoding barcode and its method thereof
Abstract
(EN)

A two-dimensional barcode includes a plurality of macro modules arranged in a two-dimensional array in a spiral sequence, each of macro modules includes a predetermined number of data unit modules for storing data codewords of a predetermined binary stream of bits, a predetermined number of cluster unit modules for storing a predetermined cluster number representing a location of the macro module, and a predetermined number of rim unit modules which possess a predetermined color to form a rim of the macro module. The rim unit modules of two adjacent macro modules are contrasting with each other to enhance identification of the respective macro module.

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