ES2129034T3 - Metodo de decodificacion de una marca de simbolo de codigo bidimensional. - Google Patents

Metodo de decodificacion de una marca de simbolo de codigo bidimensional.

Info

Publication number
ES2129034T3
ES2129034T3 ES92120077T ES92120077T ES2129034T3 ES 2129034 T3 ES2129034 T3 ES 2129034T3 ES 92120077 T ES92120077 T ES 92120077T ES 92120077 T ES92120077 T ES 92120077T ES 2129034 T3 ES2129034 T3 ES 2129034T3
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ES
Spain
Prior art keywords
indication line
code symbol
axis side
axis
division
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES92120077T
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English (en)
Inventor
Hirokazu Yoshida
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of ES2129034T3 publication Critical patent/ES2129034T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404Methods for optical code recognition
    • G06K7/1408Methods for optical code recognition the method being specifically adapted for the type of code
    • G06K7/14172D bar codes
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G06K19/06037Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K2019/06215Aspects not covered by other subgroups
    • G06K2019/06262Aspects not covered by other subgroups with target- or other orientation-indicating feature

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Character Input (AREA)
  • Error Detection And Correction (AREA)

Abstract

LA INVENCION ESTA DESTINADA A DECODIFICAR Y PROCESAR A ALTA VELOCIDAD LEYENDO MARCAS DE SIMBOLOS DE CODIGOS BIDIMENSIONALES POR UN LECTOR DE CODIGOS EN UNA PEQUEÑA CAPACIDAD DE MEMORIA. LA LINEA DE INDICACION LATERAL DE EJE X (4) Y/O LA LINEA DE INDICACION LATERAL DE EJE Y (4) EN UN AREA DE INFORMACION (8) QUE GRABA LA MARCA DE SIMBOLO DE CODIGO (2) SON LEIDAS POR EL LECTOR DE CODIGOS (3), Y SE DETECTAN LAS MARCAS DE DIVISION (7) GRABADAS EN LA LINEA DE INDICACION LATERAL DEL EJE X (4) Y/O LA LINEA DE INDICACION LATERAL DEL EJE Y (5). EN TODOS LOS INTERVALOS DE DIVISION DE LAS MARCAS DE DIVISION (7) EN LA DIRECCION DEL EJE Y Y/O EN LA DIRECCION DEL EJE X POR UN VALOR ENTERO ESPECIFICO, EL CODIGO DE MARCA (9) DE LA SEÑAL BINARIA GRABADA EN EL AREA DE INFORMACION (8) ES LEIDA SECUENCIALMENTE POR EL LECTOR DE CODIGOS (3) HASTA LA PARTE EXTREMA DE LA LINEA DE INDICACION LATERAL DEL EJE Y (5) Y/O DEL EJE X, LA REGION FORMADA EN CADA CUADRADO CON UN LADO ES EL INTERVALO DE LA MARCA DE DIVISION (7) LEIDA POR EL LECTOR DE CODIGOS (3) O LA LONGITUD ENTRE LOS CODIGOS DE DIVISION DIVIDIDOS POR UN VALOR ENTERO ES PROCESADA, DECODIFICANDO ASI LA MARCA DE SIMBOLO DE CODIGO (2).
ES92120077T 1992-04-06 1992-11-25 Metodo de decodificacion de una marca de simbolo de codigo bidimensional. Expired - Lifetime ES2129034T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4114023A JPH05290197A (ja) 1992-04-06 1992-04-06 二次元コ−ドシンボルマ−クの解読方法

Publications (1)

Publication Number Publication Date
ES2129034T3 true ES2129034T3 (es) 1999-06-01

Family

ID=14627110

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92120077T Expired - Lifetime ES2129034T3 (es) 1992-04-06 1992-11-25 Metodo de decodificacion de una marca de simbolo de codigo bidimensional.

Country Status (10)

Country Link
US (1) US5343031A (es)
EP (1) EP0564708B1 (es)
JP (1) JPH05290197A (es)
KR (1) KR100263734B1 (es)
CN (1) CN1031772C (es)
AT (1) ATE177858T1 (es)
AU (1) AU667059B2 (es)
DE (1) DE69228678T2 (es)
ES (1) ES2129034T3 (es)
TW (1) TW232736B (es)

Families Citing this family (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4939354A (en) * 1988-05-05 1990-07-03 Datacode International, Inc. Dynamically variable machine readable binary code and method for reading and producing thereof
KR100225112B1 (ko) * 1992-09-28 1999-10-15 기시모토 마사도시 도트 코드 및 정보를 기록/재생하기 위한 도트 코드 및 정보의 기록/재생 시스템(dot code and information recording/reproducing system for recording/reproducing the same)
JP2835274B2 (ja) * 1994-02-24 1998-12-14 株式会社テック 画像認識装置
JP2938338B2 (ja) * 1994-03-14 1999-08-23 株式会社デンソー 二次元コード
US5726435A (en) * 1994-03-14 1998-03-10 Nippondenso Co., Ltd. Optically readable two-dimensional code and method and apparatus using the same
JP3499913B2 (ja) * 1994-03-16 2004-02-23 ペンタックス株式会社 データシンボル読み取り装置
JP2916373B2 (ja) * 1994-06-02 1999-07-05 オリンパス光学工業株式会社 情報記録媒体及び情報再生装置
JPH10503132A (ja) * 1994-07-26 1998-03-24 インターナショナル データ マトリックス インコーポレイテッド 修正不可能な自己確認物品
JP2867904B2 (ja) * 1994-12-26 1999-03-10 株式会社デンソー 2次元コード読取装置
JP3448120B2 (ja) * 1994-12-27 2003-09-16 シャープ株式会社 デジタル情報記録担体
JP3623003B2 (ja) * 1995-03-10 2005-02-23 シャープ株式会社 デジタル情報記録方法および解読方法
JP3668275B2 (ja) * 1995-03-15 2005-07-06 シャープ株式会社 デジタル情報記録方法、解読方法および解読装置
JP3676443B2 (ja) * 1995-09-01 2005-07-27 オリンパス株式会社 情報再生装置及び情報再生方法
US5691773A (en) * 1995-09-12 1997-11-25 Metanetics Corporation Anti-hand-jittering dataform readers and methods
US6098882A (en) * 1996-03-01 2000-08-08 Cobblestone Software, Inc. Variable formatting of digital data into a pattern
US6000614A (en) * 1996-12-20 1999-12-14 Denso Corporation Two-dimensional code reading apparatus
US6786420B1 (en) 1997-07-15 2004-09-07 Silverbrook Research Pty. Ltd. Data distribution mechanism in the form of ink dots on cards
JPH10326331A (ja) * 1997-03-24 1998-12-08 Olympus Optical Co Ltd ドットコードを有する記録媒体及びコード読取装置
US6618117B2 (en) 1997-07-12 2003-09-09 Silverbrook Research Pty Ltd Image sensing apparatus including a microcontroller
US7110024B1 (en) 1997-07-15 2006-09-19 Silverbrook Research Pty Ltd Digital camera system having motion deblurring means
US6690419B1 (en) 1997-07-15 2004-02-10 Silverbrook Research Pty Ltd Utilising eye detection methods for image processing in a digital image camera
US6948794B2 (en) 1997-07-15 2005-09-27 Silverbrook Reserach Pty Ltd Printhead re-capping assembly for a print and demand digital camera system
US6624848B1 (en) 1997-07-15 2003-09-23 Silverbrook Research Pty Ltd Cascading image modification using multiple digital cameras incorporating image processing
US6879341B1 (en) 1997-07-15 2005-04-12 Silverbrook Research Pty Ltd Digital camera system containing a VLIW vector processor
US6267296B1 (en) * 1998-05-12 2001-07-31 Denso Corporation Two-dimensional code and method of optically reading the same
TW434520B (en) 1998-06-30 2001-05-16 Sony Corp Two-dimensional code recognition processing method, device therefor and medium
US6256398B1 (en) 1998-08-22 2001-07-03 Kenneth H. P. Chang Encoding and decoding a message within an image
AUPP702098A0 (en) 1998-11-09 1998-12-03 Silverbrook Research Pty Ltd Image creation method and apparatus (ART73)
US6082619A (en) * 1998-12-16 2000-07-04 Matsushita Electric Industrial Co., Ltd. Method for locating and reading a two-dimensional barcode
US6565003B1 (en) 1998-12-16 2003-05-20 Matsushita Electric Industrial Co., Ltd. Method for locating and reading a two-dimensional barcode
US6371373B1 (en) 1999-05-25 2002-04-16 Matsushita Electric Industrial Co., Ltd. Method for reading a two-dimensional barcode
AUPQ056099A0 (en) 1999-05-25 1999-06-17 Silverbrook Research Pty Ltd A method and apparatus (pprint01)
DE19942789C2 (de) * 1999-09-08 2002-10-31 Omnitron Ag Fuer Optoelektroni Verfahren zur Erkennung von zweidimensionalen Matrixcodes
US6674919B1 (en) * 1999-09-21 2004-01-06 Matsushita Electric Industrial Co., Ltd. Method for determining the skew angle of a two-dimensional barcode
SE517445C2 (sv) 1999-10-01 2002-06-04 Anoto Ab Positionsbestämning på en yta försedd med ett positionskodningsmönster
US6244764B1 (en) 2000-01-21 2001-06-12 Robotic Vision Systems, Inc. Method for data matrix print quality verification
US6636837B1 (en) 2000-01-27 2003-10-21 Eastman Kodak Company Method and apparatus for ordering photofinishing goods and/or services
SE0000949L (sv) * 2000-03-21 2001-09-22 Anoto Ab Positionsinformation
US7072529B2 (en) * 2000-03-21 2006-07-04 Anoto Ab Systems and methods for information storage
US6941026B1 (en) * 2000-06-13 2005-09-06 Cognex Corporation Method and apparatus using intensity gradients for visual identification of 2D matrix symbols
CN100361145C (zh) * 2000-06-30 2008-01-09 西尔弗布鲁克研究有限公司 用于表示数据的装置
US6817539B2 (en) * 2000-06-30 2004-11-16 Silverbrook Research Pty Ltd Generating landscape and portrait oriented tags
US6622923B1 (en) 2000-06-30 2003-09-23 Silverbrook Research Pty Ltd Data package template with data embedding
US6533181B1 (en) * 2000-07-22 2003-03-18 Roboric Vision Systems, Inc. Direct marking of parts with encoded symbology method, apparatus and symbolody
KR100404306B1 (ko) * 2000-12-29 2003-11-01 주식회사 아이콘랩 코드화된 패턴 및 이의 코드 추출 방법
JP4846945B2 (ja) * 2001-08-30 2011-12-28 特定非営利活動法人日本視覚障がい情報普及支援協会 二次元コード
US6811085B2 (en) * 2001-10-26 2004-11-02 Symbol Technologies, Inc. Miniature imager
JP2003168071A (ja) * 2001-11-30 2003-06-13 Sanyo Electric Co Ltd 2次元バーコードの読み取り方法
ATE408202T1 (de) * 2002-02-04 2008-09-15 Baumer Optronic Gmbh Redundanter zweidimensionaler code und decodierverfahren
US7123742B2 (en) * 2002-04-06 2006-10-17 Chang Kenneth H P Print user interface system and its applications
US7133563B2 (en) 2002-10-31 2006-11-07 Microsoft Corporation Passive embedded interaction code
US7502507B2 (en) 2002-10-31 2009-03-10 Microsoft Corporation Active embedded interaction code
US7116840B2 (en) 2002-10-31 2006-10-03 Microsoft Corporation Decoding and error correction in 2-D arrays
US7430497B2 (en) 2002-10-31 2008-09-30 Microsoft Corporation Statistical model for global localization
SE0401647D0 (sv) * 2004-06-28 2004-06-28 Anoto Ab Coding and decoding of data
US7191529B2 (en) * 2005-02-15 2007-03-20 Columbia Marking Tools Apparatus and method for controlling a programmable marking scribe
US7826074B1 (en) 2005-02-25 2010-11-02 Microsoft Corporation Fast embedded interaction code printing with custom postscript commands
US7421439B2 (en) 2005-04-22 2008-09-02 Microsoft Corporation Global metadata embedding and decoding
US7412089B2 (en) * 2005-05-23 2008-08-12 Nextcode Corporation Efficient finder patterns and methods for application to 2D machine vision problems
US7400777B2 (en) 2005-05-25 2008-07-15 Microsoft Corporation Preprocessing for information pattern analysis
US7729539B2 (en) 2005-05-31 2010-06-01 Microsoft Corporation Fast error-correcting of embedded interaction codes
EP1913526A4 (en) * 2005-06-17 2014-05-07 Anoto Ab METHOD AND SYSTEM FOR COMBINING A POSITION AND INFORMATION CODE
US7817816B2 (en) 2005-08-17 2010-10-19 Microsoft Corporation Embedded interaction code enabled surface type identification
US7942340B2 (en) * 2005-11-24 2011-05-17 Canon Kabushiki Kaisha Two-dimensional code, and method and apparatus for detecting two-dimensional code
DE102006005202A1 (de) * 2006-02-02 2007-08-09 Hochschule Darmstadt University Of Applied Sciences Verfahren zur Decodierung von Informationen
EP1826705A1 (de) 2006-02-25 2007-08-29 F.Hoffmann-La Roche Ag Analytisches Verbrauchsmittel und Anordnung zum Auslesen von Informationen
US8789756B2 (en) * 2006-02-25 2014-07-29 Roche Diagnostics Operations, Inc. Test element coding apparatuses, systems and methods
GB0610301D0 (en) * 2006-05-17 2006-07-05 Hewage Rohan K A New machine to cancell and segregate the letters by using rays, chemical dye's and printed bar codes
JP2008124142A (ja) * 2006-11-09 2008-05-29 Dainippon Screen Mfg Co Ltd 位置検出方法、位置検出装置、パターン描画装置及び被検出物
SE532740C2 (sv) 2006-12-15 2010-03-30 Mobill Scandinavia Ab Metod och apparat för att skapa och skicka ett kodat rutnät till en portabel kommunikationsanordning
WO2009097137A1 (en) 2008-01-29 2009-08-06 Veritec, Inc. Two-dimensional symbol and method for reading same
GB2475273B (en) 2009-11-12 2011-09-28 Liberation Consulting Ltd Toy systems and position systems
WO2011076294A1 (en) * 2009-12-22 2011-06-30 Aktiebolaget Skf Method of marking a metal component surface with modifying sequences in which the segments of the markings are formed
JP5184672B2 (ja) * 2011-04-04 2013-04-17 株式会社 廣済堂 二次元コードの読取方法およびプログラム
SG11201503742XA (en) * 2012-11-13 2015-06-29 Kyodo Printing Co Ltd Two-dimensional code
EP2782060A1 (en) 2013-03-19 2014-09-24 Usual Q Smart S.L. Purchasing method and system for purchasing by means of two-dimensional graphic codes
DE102014002620A1 (de) 2014-02-25 2015-08-27 Ioss Intelligente Optische Sensoren & Systeme Gmbh Verfahren und Vorrichtung zum optischen Aufnehmen einer Reihe von Bildern eines auf der Zylindermantelfläche eines zylindrischen Objekts aufgebrachten flächigen Codes mit unterschiedlichen Beleuchtungsscenarien
US11660899B2 (en) * 2017-11-07 2023-05-30 Sumitomo Electric Sintered Alloy. Ltd. Iron-based sintered body, method for laser-marking the same, and method for manufacturing the same
CN112069851B (zh) * 2020-09-07 2023-12-22 凌云光技术股份有限公司 一种dm码区域的获取方法及装置
CN113326712B (zh) * 2021-07-01 2022-03-29 杭州捷配信息科技有限公司 孔阵码及其制作方法以及结合孔阵码的识别方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5295121A (en) * 1976-02-06 1977-08-10 Hitachi Ltd Code plate
JPS6412384A (en) * 1987-07-06 1989-01-17 Opto Electron Kk Optical information reader
ATE114376T1 (de) * 1987-07-11 1994-12-15 Hirokazu Yoshida Verfahren zum lesen von blättern mit identifikationscode.
JPS6486289A (en) * 1987-07-11 1989-03-30 Teiryo Sangyo Kk Identifying code paper
JPH0821054B2 (ja) * 1987-09-17 1996-03-04 帝菱産業株式会社 識別コード読取装置
US4924078A (en) * 1987-11-25 1990-05-08 Sant Anselmo Carl Identification symbol, system and method
US5053609A (en) * 1988-05-05 1991-10-01 International Data Matrix, Inc. Dynamically variable machine readable binary code and method for reading and producing thereof
US4939354A (en) * 1988-05-05 1990-07-03 Datacode International, Inc. Dynamically variable machine readable binary code and method for reading and producing thereof
US5304786A (en) * 1990-01-05 1994-04-19 Symbol Technologies, Inc. High density two-dimensional bar code symbol
JP2734639B2 (ja) * 1989-06-09 1998-04-02 カシオ計算機株式会社 データ読取方法及び装置
JP2742555B2 (ja) * 1989-08-02 1998-04-22 帝菱産業株式会社 デジタルデータ記録紙のデジタルデータ読取装置
US5073963A (en) * 1990-05-25 1991-12-17 Arizona Technology Development Corp. Computerized method of matching two-dimensional (2-d) patterns
US5168147A (en) * 1990-07-31 1992-12-01 Xerox Corporation Binary image processing for decoding self-clocking glyph shape codes
US5091966A (en) * 1990-07-31 1992-02-25 Xerox Corporation Adaptive scaling for decoding spatially periodic self-clocking glyph shape codes
US5223701A (en) * 1990-10-30 1993-06-29 Ommiplanar Inc. System method and apparatus using multiple resolution machine readable symbols
US5170044A (en) * 1990-11-09 1992-12-08 Pitney Bowes Inc. Error tolerant 3x3 bit-map coding of binary data and method of decoding
US5202552A (en) * 1991-04-22 1993-04-13 Macmillan Bloedel Limited Data with perimeter identification tag
US5245165A (en) * 1991-12-27 1993-09-14 Xerox Corporation Self-clocking glyph code for encoding dual bit digital values robustly

Also Published As

Publication number Publication date
DE69228678D1 (de) 1999-04-22
KR930022238A (ko) 1993-11-23
ATE177858T1 (de) 1999-04-15
AU2819592A (en) 1993-10-07
CN1077299A (zh) 1993-10-13
KR100263734B1 (ko) 2000-08-01
US5343031A (en) 1994-08-30
DE69228678T2 (de) 1999-07-29
TW232736B (es) 1994-10-21
AU667059B2 (en) 1996-03-07
EP0564708A3 (es) 1994-04-06
EP0564708A2 (en) 1993-10-13
CN1031772C (zh) 1996-05-08
JPH05290197A (ja) 1993-11-05
EP0564708B1 (en) 1999-03-17

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