JP4495908B2 - 図形的二次元コードに基いて機械で符号化を実施する方法 - Google Patents
図形的二次元コードに基いて機械で符号化を実施する方法 Download PDFInfo
- Publication number
- JP4495908B2 JP4495908B2 JP2002547091A JP2002547091A JP4495908B2 JP 4495908 B2 JP4495908 B2 JP 4495908B2 JP 2002547091 A JP2002547091 A JP 2002547091A JP 2002547091 A JP2002547091 A JP 2002547091A JP 4495908 B2 JP4495908 B2 JP 4495908B2
- Authority
- JP
- Japan
- Prior art keywords
- image
- information
- marked
- encoded
- encoding
- 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 - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
- G06T1/0028—Adaptive watermarking, e.g. Human Visual System [HVS]-based watermarking
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
- G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
- G06K1/121—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by printing code marks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record 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
- G06K19/06009—Record 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
- G06K19/06018—Record 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 one-dimensional coding
- G06K19/06028—Record 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 one-dimensional coding using bar codes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record 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
- G06K19/06009—Record 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
- G06K19/06037—Record 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0065—Extraction of an embedded watermark; Reliable detection
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Editing Of Facsimile Originals (AREA)
- Image Processing (AREA)
- Collating Specific Patterns (AREA)
Description
この出願は、米国特許法第120条の下で、援用をもって開示内容がすべて本明細書内に包含されたものとする、2000年5月25日にDoron Shaked他によって提出され、「A Method and Apparatus for Generating and Decoding a Visually Significant Bar Code」と題された、同時係属中の米国特許出願第09/579,070号の利益を請求するものである。
暗号ハッシュは、情報12をハッシングルーチン等のような一方向暗号化プロセス(又はダイジェスト生成プロセス(ダイジェスティングプロセス;digesting process))に通すことによって生成することができる。ダイジェスト生成プロセスは、2つの異なる電子文書が同じ暗号ハッシュを生成する確率が非常に低いように構成されるのが好ましい。エンコーダ16は、暗号ハッシュを暗号化することによりデジタル署名を作成する(ステップ32)。非対称(公開鍵)暗号化の実施形態では、暗号ハッシュを送り側の秘密鍵を用いて暗号化する。エンコーダ16は、情報12とデジタル署名とを連結することにより、署名付きメッセージを生成する(ステップ34)。いくつかの実施形態においては、署名付きメッセージに公開鍵証明書を添付する(ステップ36)。この公開鍵証明書は、認証局によって発行されることができる。公開鍵証明書は、特定の公開鍵が特定のエンティティ(例えば、送り側)の公開鍵であるということ、及び、このエンティティが対応する秘密鍵の保持者であるということとの認証局による証明を含んでよい。さらに、公開鍵証明書は、特に、認証局の名前,証明書保持者の名前,証明書の満了日,証明書保持者の公開鍵,及び認証局によって生成されたデジタル署名を含み得る。本明細書で使用する用語「署名付きメッセージ」は、公開鍵証明書が添付されているか否かに関らず署名付きメッセージを言う。エンコーダ16は、結果としての署名付きメッセージを誤り訂正符号を用いて符号化する(ステップ38)。誤り訂正符号は、従来からの畳込み(ツリー)符号又は従来からのブロック符号であってよい。例えば、誤り訂正符号は、3つの誤りに対して訂正を行う標準16→31ビットBCH符号であってよい。
このように、図4の認証プロセスを使用して、情報12の真正又は情報12の送り側のアイデンティティ、若しくは両方を確認することができる。新たな暗号ハッシュが元の暗号ハッシュと一致しない場合(ステップ64)には、情報は危殆化している(ステップ68)。
Claims (10)
- 図形的二次元コードに基いて機械で符号化を実施する方法であって、
符号化すべき情報から署名付き確証メッセージを生成するステップと、
基礎画像を、前記署名付き確証メッセージの図形的符号化された情報を含むマーク付き画像に変換するステップであって、前記基礎画像を複数の画像領域に分割し、前記画像領域内のピクセル値に基づいて、前記画像領域の少なくともいくつかを複数のグループに分け、該分けられた画像領域の各グループを対応する前記図形的二次元コードのパターンのセットで符号化することにより、前記署名付き確証メッセージを図形的に符号化して前記マーク付き画像を生成することを含む、ステップと、
を含むことを特徴とする方法。 - 前記署名付き確証メッセージを生成するステップは、前記符号化すべき情報から暗号ハッシュを生成するステップを含むことを特徴とする請求項1に記載の方法。
- 前記署名付き確証メッセージを生成するステップは、前記暗号ハッシュを暗号化してデジタル署名を生成するステップを含むことを特徴とする請求項2に記載の方法。
- 前記暗号ハッシュは、秘密鍵を用いて暗号化されることを特徴とする請求項3に記載の方法。
- 前記署名付き確証メッセージを生成するステップは、前記符号化すべき情報と前記デジタル署名とを連結するステップを含むことを特徴とする請求項3に記載の方法。
- 前記基礎画像は、手書き署名の画像を含み、前記変換するステップは、前記手書き署名の画像を含む前記基礎画像を、前記基礎画像に類似しておりかつ前記署名付き確証メッセージの図形的符号化された情報を含む外観を有するマーク付き画像に変換するステップを含むことを特徴とする請求項1に記載の方法。
- 前記変換するステップは、手書き署名画像をベクトル形式画像に変換するステップを含むこと特徴とする請求項6に記載の方法。
- 前記ベクトル形式画像に対して1組の基礎制御点を取得するステップと、前記基礎制御点を変位させて、マーク付き画像が生成される制御点のマーク付きセットを取得することにより、前記符号化すべき情報を符号化するステップと、を更に含むことを特徴とする請求項7に記載の方法。
- 前記手書き署名画像の変換ステップは、一連のスプライン曲線を前記手書き署名に適合させるステップを含むことを特徴とする請求項7に記載の方法。
- 前記マーク付き画像は、前記基礎画像に類似した外観を有することを特徴とする請求項1に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/728,292 US7107453B2 (en) | 2000-05-25 | 2000-12-01 | Authenticatable graphical bar codes |
PCT/US2001/045072 WO2002045000A2 (en) | 2000-12-01 | 2001-11-28 | Authenticatable graphical bar codes |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004526225A JP2004526225A (ja) | 2004-08-26 |
JP4495908B2 true JP4495908B2 (ja) | 2010-07-07 |
Family
ID=24926240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002547091A Expired - Fee Related JP4495908B2 (ja) | 2000-12-01 | 2001-11-28 | 図形的二次元コードに基いて機械で符号化を実施する方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7107453B2 (ja) |
EP (1) | EP1340188B1 (ja) |
JP (1) | JP4495908B2 (ja) |
AU (1) | AU2002239401A1 (ja) |
DE (1) | DE60127165T2 (ja) |
WO (1) | WO2002045000A2 (ja) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7107453B2 (en) | 2000-05-25 | 2006-09-12 | Hewlett-Packard Development Company, L.P. | Authenticatable graphical bar codes |
US6751352B1 (en) | 2000-05-25 | 2004-06-15 | Hewlett-Packard Development Company, L.P. | Method and apparatus for generating and decoding a visually significant barcode |
US7069443B2 (en) | 2000-06-06 | 2006-06-27 | Ingeo Systems, Inc. | Creating and verifying electronic documents |
US6938017B2 (en) * | 2000-12-01 | 2005-08-30 | Hewlett-Packard Development Company, L.P. | Scalable, fraud resistant graphical payment indicia |
US7028009B2 (en) * | 2001-01-17 | 2006-04-11 | Contentguardiholdings, Inc. | Method and apparatus for distributing enforceable property rights |
US20020180997A1 (en) * | 2001-05-29 | 2002-12-05 | Imation Corp. | Embedding color profiles in raster image data using data hiding techniques |
US6715687B2 (en) * | 2002-02-01 | 2004-04-06 | William Berson | Pen and system for writing encoded lines |
US7028902B2 (en) * | 2002-10-03 | 2006-04-18 | Hewlett-Packard Development Company, L.P. | Barcode having enhanced visual quality and systems and methods thereof |
US7523315B2 (en) * | 2003-12-22 | 2009-04-21 | Ingeo Systems, Llc | Method and process for creating an electronically signed document |
US7823784B2 (en) * | 2004-06-14 | 2010-11-02 | Fujifilm Corporation | Barcode creation apparatus, barcode creation method and program |
WO2007040380A1 (es) * | 2005-10-04 | 2007-04-12 | Fernandez Orozco Sergio Antoni | Método para generar una firma impresa para asegurar el contenido de documentos de texto |
GB0601700D0 (en) * | 2006-01-27 | 2006-03-08 | Claricom Ltd | Printing Method |
WO2007127038A2 (en) * | 2006-04-28 | 2007-11-08 | Microsoft Corporation | Secure signatures |
AU2006252019B2 (en) * | 2006-12-13 | 2012-06-28 | Canon Kabushiki Kaisha | Method and Apparatus for Dynamic Connector Analysis |
US8430301B2 (en) * | 2009-11-23 | 2013-04-30 | Konica Minolta Laboratory U.S.A., Inc. | Document authentication using hierarchical barcode stamps to detect alterations of barcode |
US9367776B2 (en) | 2011-06-22 | 2016-06-14 | Hewlett-Packard Development Company, L.P. | Systems and methods for tracing the source of printed pages |
DK2820592T3 (en) | 2012-03-01 | 2018-04-23 | Sys Tech Solutions Inc | Unique identification information from labeled features |
FR3017333B1 (fr) * | 2014-02-07 | 2019-06-21 | Advanced Track & Trace | Procede et dispositif de securisation d'un objet, procede et dispositif de controle leur correspondant et objet securise |
US9940572B2 (en) | 2015-02-17 | 2018-04-10 | Sys-Tech Solutions, Inc. | Methods and a computing device for determining whether a mark is genuine |
US9519942B2 (en) * | 2015-02-17 | 2016-12-13 | Sys-Tech Solutions, Inc. | Methods and a computing device for determining whether a mark is genuine |
KR101889265B1 (ko) | 2015-06-16 | 2018-08-16 | 시스-테크 솔루션스 인코포레이티드 | 마크가 진짜인지를 결정하기 위한 방법들 및 컴퓨팅 디바이스 |
GB2546459B (en) | 2017-05-10 | 2018-02-28 | Tomlinson Martin | Data verification |
KR102017379B1 (ko) * | 2017-07-21 | 2019-09-02 | 건국대학교 산학협력단 | 이미지 벡터 처리를 이용한 해시 암호화 방법 및 장치 |
US11880479B2 (en) * | 2021-08-05 | 2024-01-23 | Bank Of America Corporation | Access control for updating documents in a digital document repository |
Family Cites Families (98)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US548686A (en) * | 1895-10-29 | Cigar-bunching machine | ||
US4637051A (en) * | 1983-07-18 | 1987-01-13 | Pitney Bowes Inc. | System having a character generator for printing encrypted messages |
JPS62111367A (ja) * | 1985-11-11 | 1987-05-22 | Hitachi Ltd | バ−コ−ド読取機 |
US4901073A (en) * | 1986-12-04 | 1990-02-13 | Regent Of The University Of California | Encoder for measuring the absolute position of moving elements |
US4822986A (en) * | 1987-04-17 | 1989-04-18 | Recognition Equipment Incorporated | Method of detecting and reading postal bar codes |
US4924078A (en) * | 1987-11-25 | 1990-05-08 | Sant Anselmo Carl | Identification symbol, system and method |
US5195123A (en) * | 1988-11-23 | 1993-03-16 | Clement Richard J | Radiograph identification method and device |
US5304786A (en) * | 1990-01-05 | 1994-04-19 | Symbol Technologies, Inc. | High density two-dimensional bar code symbol |
US5153928A (en) * | 1989-06-09 | 1992-10-06 | Casio Computer Co., Ltd. | Method and apparatus for recording/reproducing mesh pattern data |
US5075862A (en) * | 1989-12-26 | 1991-12-24 | Pitney Bowes Inc. | System for printing value indicia with diagrammatic data representation |
US5337361C1 (en) * | 1990-01-05 | 2001-05-15 | Symbol Technologies Inc | Record with encoded data |
CA2039652C (en) | 1990-05-30 | 1996-12-24 | Frank Zdybel, Jr. | Hardcopy lossless data storage and communications for electronic document processing systems |
US5060980A (en) * | 1990-05-30 | 1991-10-29 | Xerox Corporation | Form utilizing encoded indications for form field processing |
US5091966A (en) * | 1990-07-31 | 1992-02-25 | Xerox Corporation | Adaptive scaling for decoding spatially periodic self-clocking glyph shape codes |
US5120940A (en) * | 1990-08-10 | 1992-06-09 | The Boeing Company | Detection of barcodes in binary images with arbitrary orientation |
US6076733A (en) * | 1993-11-24 | 2000-06-20 | Metrologic Instruments, Inc. | Web-based system and method for enabling a viewer to access and display HTML-encoded documents located on the world wide web (WWW) by reading URL-encoded bar code symbols printed on a web-based information resource guide |
US5315098A (en) * | 1990-12-27 | 1994-05-24 | Xerox Corporation | Methods and means for embedding machine readable digital data in halftone images |
US5818970A (en) * | 1991-04-26 | 1998-10-06 | Canon Kabushiki Kaisha | Image encoding apparatus |
US5541396A (en) * | 1991-07-19 | 1996-07-30 | Rentsch; Frederic | Method of representing binary data |
US5339170A (en) * | 1991-12-31 | 1994-08-16 | Xerox Corporation | Image processing system and method employing hybrid filtering to provide improved reconstruction of continuous tone images from halftone screen-structured images |
US5329105A (en) * | 1992-08-10 | 1994-07-12 | United Parcel Service Of America, Inc. | Method and apparatus for determining the width of elements of bar code symbols |
US5535020A (en) * | 1992-10-15 | 1996-07-09 | Digital Equipment Corporation | Void and cluster apparatus and method for generating dither templates |
US5527407A (en) * | 1992-12-30 | 1996-06-18 | The Goodyear Tire & Rubber Company | Apparatus and method for marking a rubber article with a message readable by a light scanning device |
WO1994018641A1 (en) * | 1993-02-02 | 1994-08-18 | Label Vision Systems, Inc. | Method and apparatus for decoding bar code data from a video signal and applications thereof |
US5490217A (en) * | 1993-03-05 | 1996-02-06 | Metanetics Corporation | Automatic document handling system |
US6983051B1 (en) * | 1993-11-18 | 2006-01-03 | Digimarc Corporation | Methods for audio watermarking and decoding |
US6345104B1 (en) * | 1994-03-17 | 2002-02-05 | Digimarc Corporation | Digital watermarks and methods for security documents |
US5459307A (en) * | 1993-11-30 | 1995-10-17 | Xerox Corporation | System for storage and retrieval of digitally encoded information on a medium |
US5606507A (en) | 1994-01-03 | 1997-02-25 | E-Stamp Corporation | System and method for storing, retrieving and automatically printing postage on mail |
US6095418A (en) | 1994-01-27 | 2000-08-01 | Symbol Technologies, Inc. | Apparatus for processing symbol-encoded document information |
US5591956A (en) * | 1995-05-15 | 1997-01-07 | Welch Allyn, Inc. | Two dimensional data encoding structure and symbology for use with optical readers |
GB9409773D0 (en) | 1994-05-13 | 1994-07-06 | Atomic Energy Authority Uk | Identification system |
US5544255A (en) | 1994-08-31 | 1996-08-06 | Peripheral Vision Limited | Method and system for the capture, storage, transport and authentication of handwritten signatures |
US6091835A (en) | 1994-08-31 | 2000-07-18 | Penop Limited | Method and system for transcribing electronic affirmations |
US5523552A (en) * | 1994-10-19 | 1996-06-04 | Symbol Technologies, Inc. | Method and apparatus to scan randomly oriented two-dimensional bar code symbols |
US5513563A (en) * | 1994-11-14 | 1996-05-07 | Pitney Bowes Inc. | Indicia security via variable dot size |
JP2952170B2 (ja) * | 1994-12-16 | 1999-09-20 | オリンパス光学工業株式会社 | 情報再生システム |
JPH08185451A (ja) * | 1994-12-28 | 1996-07-16 | Toppan Moore Co Ltd | 手書き情報処理装置及び情報記憶媒体 |
US6032861A (en) * | 1995-01-03 | 2000-03-07 | Lemelson; Jerome H. | Method and apparatus for encoding and decoding bar codes with primary and secondary information and method of using such bar codes |
US5661284A (en) * | 1995-03-13 | 1997-08-26 | Albert J. Freeman | Commercial transaction system |
JPH0944592A (ja) * | 1995-05-23 | 1997-02-14 | Olympus Optical Co Ltd | 情報再生システム |
US5710636A (en) * | 1995-06-05 | 1998-01-20 | Xerox Corporation | Method and apparatus for generating halftone images having human readable patterns formed therein |
US5706099A (en) * | 1995-06-05 | 1998-01-06 | Xerox Corporation | Method and apparatus for generating serpentine halftone images |
US6311214B1 (en) * | 1995-07-27 | 2001-10-30 | Digimarc Corporation | Linking of computers based on optical sensing of digital data |
JPH0981711A (ja) * | 1995-09-20 | 1997-03-28 | Olympus Optical Co Ltd | 情報記録媒体、情報再生システム、及び情報記録システム |
US5801944A (en) * | 1995-10-11 | 1998-09-01 | E-Stamp Corporation | System and method for printing postage indicia directly on documents |
US5819240A (en) * | 1995-10-11 | 1998-10-06 | E-Stamp Corporation | System and method for generating personalized postage indica |
US6151590A (en) * | 1995-12-19 | 2000-11-21 | Pitney Bowes Inc. | Network open metering system |
US5828772A (en) * | 1995-12-27 | 1998-10-27 | Lucent Technologies Inc. | Method and apparatus for parametric signature verification using global features and stroke-direction codes |
US5838814A (en) * | 1996-01-02 | 1998-11-17 | Moore; Steven Jerome | Security check method and apparatus |
US5969325A (en) * | 1996-06-03 | 1999-10-19 | Accu-Sort Systems, Inc. | High speed image acquisition system and method of processing and decoding barcode symbol |
US5710814A (en) * | 1996-07-23 | 1998-01-20 | Cheyenne Property Trust | Cryptographic unit touch point logic |
US5799112A (en) * | 1996-08-30 | 1998-08-25 | Xerox Corporation | Method and apparatus for wavelet-based universal halftone image unscreening |
US5765176A (en) | 1996-09-06 | 1998-06-09 | Xerox Corporation | Performing document image management tasks using an iconic image having embedded encoded information |
US5982506A (en) * | 1996-09-10 | 1999-11-09 | E-Stamp Corporation | Method and system for electronic document certification |
GB9621274D0 (en) * | 1996-10-11 | 1996-11-27 | Certicom Corp | Signature protocol for mail delivery |
US5946415A (en) * | 1996-10-24 | 1999-08-31 | The United States Of America As Represented By The Secretary Of The Army | Method and apparatus to process drawing images |
US5974147A (en) | 1996-11-07 | 1999-10-26 | Pitney Bowes Inc. | Method of verifying unreadable indicia for an information-based indicia program |
US6064738A (en) * | 1996-12-10 | 2000-05-16 | The Research Foundation Of State University Of New York | Method for encrypting and decrypting data using chaotic maps |
US5982896A (en) * | 1996-12-23 | 1999-11-09 | Pitney Bowes Inc. | System and method of verifying cryptographic postage evidencing using a fixed key set |
US5871288A (en) * | 1996-12-24 | 1999-02-16 | Pitney Bowes Inc. | Method for customer selectable module size for an information based indicia |
US5790703A (en) * | 1997-01-21 | 1998-08-04 | Xerox Corporation | Digital watermarking using conjugate halftone screens |
US5953426A (en) * | 1997-02-11 | 1999-09-14 | Francotyp-Postalia Ag & Co. | Method and arrangement for generating and checking a security imprint |
US5974200A (en) | 1997-03-20 | 1999-10-26 | Matsushita Electric Industrial Company, Ltd. | Method of locating a machine readable two dimensional barcode within an image |
US5835615A (en) * | 1997-03-24 | 1998-11-10 | Synex | Bar code printability gauge |
US5880451A (en) * | 1997-04-24 | 1999-03-09 | United Parcel Service Of America, Inc. | System and method for OCR assisted bar code decoding |
JPH10320497A (ja) * | 1997-05-16 | 1998-12-04 | Olympus Optical Co Ltd | コード読取記録装置 |
KR100251048B1 (ko) * | 1997-06-19 | 2000-04-15 | 윤종용 | 단일 구조의 부호화가 가능한 주변 화소 성향 값을 이용한 격주사선 처리 부호화 방법 |
US5947200A (en) * | 1997-09-25 | 1999-09-07 | Atlantic Richfield Company | Method for fracturing different zones from a single wellbore |
US6000332A (en) | 1997-09-30 | 1999-12-14 | Cyrk, Inc. | Process for achieving a lenticular effect by screen printing |
US5996893A (en) * | 1997-10-28 | 1999-12-07 | Eastman Kodak Company | Method and apparatus for visually identifying an area on a photograph or image where digital data is stored |
US6601172B1 (en) * | 1997-12-31 | 2003-07-29 | Philips Electronics North America Corp. | Transmitting revisions with digital signatures |
TW355781B (en) * | 1998-01-09 | 1999-04-11 | Winbond Electronics Corp | Apparatus and method for 2-stage compression using half-tone method |
US6212504B1 (en) * | 1998-01-12 | 2001-04-03 | Unisys Corporation | Self-authentication of value documents using encoded indices |
US6064764A (en) * | 1998-03-30 | 2000-05-16 | Seiko Epson Corporation | Fragile watermarks for detecting tampering in images |
US6175827B1 (en) * | 1998-03-31 | 2001-01-16 | Pitney Bowes Inc. | Robus digital token generation and verification system accommodating token verification where addressee information cannot be recreated automated mail processing |
US6263086B1 (en) * | 1998-04-15 | 2001-07-17 | Xerox Corporation | Automatic detection and retrieval of embedded invisible digital watermarks from halftone images |
US5964414A (en) * | 1998-04-30 | 1999-10-12 | Stoneage, Inc | High pressure liquid rotary nozzle with viscous retarder |
US6252675B1 (en) * | 1998-05-08 | 2001-06-26 | Xerox Corporation | Apparatus and method for halftone hybrid screen generation |
US6201901B1 (en) * | 1998-06-01 | 2001-03-13 | Matsushita Electronic Industrial Co., Ltd. | Border-less clock free two-dimensional barcode and method for printing and reading the same |
US6501854B1 (en) * | 1998-07-31 | 2002-12-31 | Sony Corporation | Information processing apparatus, an information processing method and a medium |
US6256398B1 (en) | 1998-08-22 | 2001-07-03 | Kenneth H. P. Chang | Encoding and decoding a message within an image |
US5946414A (en) | 1998-08-28 | 1999-08-31 | Xerox Corporation | Encoding data in color images using patterned color modulated image regions |
JP2000099501A (ja) * | 1998-09-17 | 2000-04-07 | Internatl Business Mach Corp <Ibm> | 文書データへの情報の埋め込み方法およびシステム |
US6141441A (en) * | 1998-09-28 | 2000-10-31 | Xerox Corporation | Decoding data from patterned color modulated image regions in a color image |
US6470096B2 (en) * | 1998-11-13 | 2002-10-22 | Xerox Corporation | Method for locating user interface tags in a document processing system |
US6427021B1 (en) * | 1998-12-02 | 2002-07-30 | Pitney Bowes Inc. | Recording graphical and tracking information on the face of a mailpiece |
US6240196B1 (en) * | 1998-12-18 | 2001-05-29 | Pitney Bowes Inc. | Mail generation system with enhanced security by use of modified print graphic information |
US6307955B1 (en) * | 1998-12-18 | 2001-10-23 | Topaz Systems, Inc. | Electronic signature management system |
WO2000039953A1 (en) * | 1998-12-23 | 2000-07-06 | Kent Ridge Digital Labs | Method and apparatus for protecting the legitimacy of an article |
JP2000235617A (ja) * | 1999-02-17 | 2000-08-29 | Olympus Optical Co Ltd | データ読取装置 |
US6457651B2 (en) * | 1999-10-01 | 2002-10-01 | Xerox Corporation | Dual mode, dual information, document bar coding and reading system |
US6526155B1 (en) * | 1999-11-24 | 2003-02-25 | Xerox Corporation | Systems and methods for producing visible watermarks by halftoning |
US6398117B1 (en) * | 2000-01-14 | 2002-06-04 | Hewlett-Packard Co. | Method and system for combining bar codes of different encoding dimensions |
US6493110B1 (en) * | 2000-04-05 | 2002-12-10 | Gregory B. Roberts | System and method for bar code rendering and recognition |
US6373587B1 (en) * | 2000-05-19 | 2002-04-16 | Pitney Bowes Inc. | Method for printing electronic tickets |
US7107453B2 (en) | 2000-05-25 | 2006-09-12 | Hewlett-Packard Development Company, L.P. | Authenticatable graphical bar codes |
US6938017B2 (en) | 2000-12-01 | 2005-08-30 | Hewlett-Packard Development Company, L.P. | Scalable, fraud resistant graphical payment indicia |
-
2000
- 2000-12-01 US US09/728,292 patent/US7107453B2/en not_active Expired - Lifetime
-
2001
- 2001-11-28 WO PCT/US2001/045072 patent/WO2002045000A2/en active IP Right Grant
- 2001-11-28 JP JP2002547091A patent/JP4495908B2/ja not_active Expired - Fee Related
- 2001-11-28 EP EP01987160A patent/EP1340188B1/en not_active Expired - Lifetime
- 2001-11-28 DE DE60127165T patent/DE60127165T2/de not_active Expired - Lifetime
- 2001-11-28 AU AU2002239401A patent/AU2002239401A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1340188A2 (en) | 2003-09-03 |
EP1340188B1 (en) | 2007-03-07 |
US20010047476A1 (en) | 2001-11-29 |
WO2002045000A3 (en) | 2003-01-30 |
US7107453B2 (en) | 2006-09-12 |
WO2002045000A2 (en) | 2002-06-06 |
JP2004526225A (ja) | 2004-08-26 |
DE60127165D1 (de) | 2007-04-19 |
DE60127165T2 (de) | 2008-04-10 |
AU2002239401A1 (en) | 2002-06-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4495908B2 (ja) | 図形的二次元コードに基いて機械で符号化を実施する方法 | |
JP4762197B2 (ja) | スケーラブルな、不正に強い図形的な支払証印 | |
JP7093352B2 (ja) | 複合二次元バーコード、電子証書媒体、生成、読取装置および方法 | |
Tkachenko et al. | Two-level QR code for private message sharing and document authentication | |
JP4000316B2 (ja) | 埋め込み型図形符号化を用いたハーフトーン化による図形コードの生成 | |
EP1158456B1 (en) | Barcode system | |
US6871789B2 (en) | Document printed with graphical symbols which encode information | |
JP5453074B2 (ja) | 文書を印刷する方法及びプログラム | |
JP3964390B2 (ja) | グラフィカルバーコードの生成および復号化 | |
US20080260267A1 (en) | System And Method For Generating A Signed Hardcopy Document And Authentication Thereof | |
JP2004127297A (ja) | 拡張された視認品質を有するバーコード、および、そのシステムおよび方法 | |
JP2004530227A (ja) | グラフィカルバーコードの基準目印パターン | |
MXPA06001533A (es) | Datos leibles por maquina. | |
AU2002229923B2 (en) | Document printed with graphical symbols which encode information | |
AU2002229923A1 (en) | Document printed with graphical symbols which encode information |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20041125 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080704 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20081002 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20081009 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20081010 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20090616 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20091016 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20091022 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100319 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100412 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130416 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130416 Year of fee payment: 3 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130416 Year of fee payment: 3 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130416 Year of fee payment: 3 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130416 Year of fee payment: 3 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140416 Year of fee payment: 4 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |