HK1015595A1 - A data hiding and extracting method and a system for transmitting data to and receiving data from a network - Google Patents

A data hiding and extracting method and a system for transmitting data to and receiving data from a network

Info

Publication number
HK1015595A1
HK1015595A1 HK99100592A HK99100592A HK1015595A1 HK 1015595 A1 HK1015595 A1 HK 1015595A1 HK 99100592 A HK99100592 A HK 99100592A HK 99100592 A HK99100592 A HK 99100592A HK 1015595 A1 HK1015595 A1 HK 1015595A1
Authority
HK
Hong Kong
Prior art keywords
data
network
extracting method
hiding
transmitting
Prior art date
Application number
HK99100592A
Other languages
English (en)
Inventor
Masayuki Numao
Shuichi Shimizu
Norishige Morimoto
Mei Kobayashi
Original Assignee
Ibm
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ibm filed Critical Ibm
Publication of HK1015595A1 publication Critical patent/HK1015595A1/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32203Spatial or amplitude domain methods
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/387Composing, repositioning or otherwise geometrically modifying originals
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00General purpose image data processing
    • G06T1/0021Image watermarking
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09CCIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C5/00Ciphering apparatus or methods not provided for in the preceding groups, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32203Spatial or amplitude domain methods
    • H04N1/32208Spatial or amplitude domain methods involving changing the magnitude of selected pixels, e.g. overlay of information or super-imposition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32203Spatial or amplitude domain methods
    • H04N1/32251Spatial or amplitude domain methods in multilevel data, e.g. greyscale or continuous tone data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32309Methods relating to embedding, encoding, decoding, detection or retrieval operations in colour image data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2389Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23892Multiplex stream processing, e.g. multiplex stream encrypting involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835Generation of protective data, e.g. certificates
    • H04N21/8358Generation of protective data, e.g. certificates involving watermark
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00General purpose image data processing
    • G06T2201/005Image watermarking
    • G06T2201/0051Embedding of the watermark in the spatial domain
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00General purpose image data processing
    • G06T2201/005Image watermarking
    • G06T2201/0061Embedding of the watermark in each block of the image, e.g. segmented watermarking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3233Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of authentication information, e.g. digital signature, watermark
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3269Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs
    • H04N2201/327Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs which are undetectable to the naked eye, e.g. embedded codes
HK99100592A 1996-06-20 1999-02-12 A data hiding and extracting method and a system for transmitting data to and receiving data from a network HK1015595A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15933096 1996-06-20
PCT/JP1997/000395 WO1997049235A1 (fr) 1996-06-20 1997-02-13 Procede permettant de cacher des donnees et procede permettant d'extraire des donnees

Publications (1)

Publication Number Publication Date
HK1015595A1 true HK1015595A1 (en) 1999-10-15

Family

ID=15691471

Family Applications (1)

Application Number Title Priority Date Filing Date
HK99100592A HK1015595A1 (en) 1996-06-20 1999-02-12 A data hiding and extracting method and a system for transmitting data to and receiving data from a network

Country Status (11)

Country Link
US (2) US6055321A (fr)
EP (1) EP0852441B1 (fr)
JP (1) JP3251594B2 (fr)
KR (1) KR100295007B1 (fr)
CN (2) CN1207894C (fr)
CA (1) CA2230071A1 (fr)
DE (1) DE69739969D1 (fr)
HK (1) HK1015595A1 (fr)
MY (1) MY125067A (fr)
TW (1) TW347506B (fr)
WO (1) WO1997049235A1 (fr)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10361802B1 (en) 1999-02-01 2019-07-23 Blanding Hovenweep, Llc Adaptive pattern recognition based control system and method
US6614914B1 (en) * 1995-05-08 2003-09-02 Digimarc Corporation Watermark embedder and reader
US6993152B2 (en) * 1994-03-17 2006-01-31 Digimarc Corporation Hiding geo-location data through arrangement of objects
US6411725B1 (en) * 1995-07-27 2002-06-25 Digimarc Corporation Watermark enabled video objects
US7006661B2 (en) 1995-07-27 2006-02-28 Digimarc Corp Digital watermarking systems and methods
JP3172475B2 (ja) * 1996-12-26 2001-06-04 日本アイ・ビー・エム株式会社 統計検定を用いたデータ・ハイディング方法及びデータ抽出方法
GB9700854D0 (en) 1997-01-16 1997-03-05 Scient Generics Ltd Sub-audible acoustic data transmission mechanism
JP3560441B2 (ja) 1997-04-07 2004-09-02 日本アイ・ビー・エム株式会社 複数フレーム・データ・ハイディング方法及び検出方法
JP4313873B2 (ja) * 1998-01-30 2009-08-12 キヤノン株式会社 電子機器及びデータ処理方法
JP4182603B2 (ja) * 1998-10-07 2008-11-19 ソニー株式会社 符号化装置および符号化方法、復号装置および復号方法、記録媒体、並びにデータ処理装置
US6965697B1 (en) * 1998-07-15 2005-11-15 Sony Corporation Coding apparatus and method, decoding apparatus and method, data processing system, storage medium, and signal
JP4822304B2 (ja) * 1998-08-06 2011-11-24 ソニー株式会社 画像処理装置および画像処理方法、並びに記録媒体
US6456393B1 (en) * 1998-08-18 2002-09-24 Seiko Epson Corporation Information embedding in document copies
JP2000155798A (ja) * 1998-11-18 2000-06-06 Toshiba Corp 機器制御方法および機器制御システム
GB2345602A (en) * 1999-01-07 2000-07-12 Hewlett Packard Co Applying digital watermarks to selected sections of data files
EP1157499A4 (fr) * 1999-03-10 2003-07-09 Digimarc Corp Procedes et dispositifs de traitement du signal, et applications de gestion de droits numeriques
JP3098513B1 (ja) 1999-04-14 2000-10-16 インターナショナル・ビジネス・マシーンズ・コーポレ−ション 改変判定装置およびその方法
US7224995B2 (en) * 1999-11-03 2007-05-29 Digimarc Corporation Data entry method and system
JP3986226B2 (ja) * 1999-11-29 2007-10-03 株式会社日立製作所 データ埋め込み装置,データ抽出装置およびそれらの方法ならびに該方法を記録した記録媒体
JP4099951B2 (ja) * 2000-03-30 2008-06-11 コニカミノルタビジネステクノロジーズ株式会社 画像データに付加情報を埋め込むための画像処理装置、画像形成装置、情報埋込方法およびプログラム
WO2002013094A1 (fr) * 2000-08-03 2002-02-14 Digimarc Corporation Liaison entre des factures et des etats financiers sur papier et des ressources en ligne
US6978371B1 (en) * 2000-11-07 2005-12-20 Matsushita Electric Industrial Co., Ltd. Data hiding in digital multimedia
US6707928B2 (en) * 2000-11-29 2004-03-16 Intel Corporation Method for block-based digital image watermarking
DK1340320T3 (da) 2000-11-30 2009-02-23 Intrasonics Ltd Apparat og system til anvendelse af datasignaler indlejret i et akustisk signal
US7174030B2 (en) * 2001-02-06 2007-02-06 Victor Company Of Japan, Ltd. Method and apparatus for embedding and reproducing watermark into and from contents data
US7042470B2 (en) * 2001-03-05 2006-05-09 Digimarc Corporation Using embedded steganographic identifiers in segmented areas of geographic images and characteristics corresponding to imagery data derived from aerial platforms
US6950519B2 (en) * 2001-03-05 2005-09-27 Digimarc Corporation Geographically watermarked imagery and methods
US7061510B2 (en) * 2001-03-05 2006-06-13 Digimarc Corporation Geo-referencing of aerial imagery using embedded image identifiers and cross-referenced data sets
US7197160B2 (en) * 2001-03-05 2007-03-27 Digimarc Corporation Geographic information systems using digital watermarks
US7254249B2 (en) * 2001-03-05 2007-08-07 Digimarc Corporation Embedding location data in video
US7249257B2 (en) * 2001-03-05 2007-07-24 Digimarc Corporation Digitally watermarked maps and signs and related navigational tools
US9363409B2 (en) * 2001-03-05 2016-06-07 Digimarc Corporation Image management system and methods using digital watermarks
US7113612B2 (en) * 2001-03-22 2006-09-26 Victor Company Of Japan, Ltd. Apparatus for embedding and reproducing watermark into and from contents data
US7181017B1 (en) 2001-03-23 2007-02-20 David Felsher System and method for secure three-party communications
FR2823630B1 (fr) * 2001-04-12 2003-07-18 Canon Kk Association d'informations de segmentation a un signal numerique
US7340076B2 (en) * 2001-05-10 2008-03-04 Digimarc Corporation Digital watermarks for unmanned vehicle navigation
US20020169962A1 (en) * 2001-05-10 2002-11-14 Brundage Trent J. Digital watermarks used in automation equipment
JP2004536504A (ja) * 2001-06-25 2004-12-02 ジェイピー・モーガン・チェイス・バンク 電子商品引換券及び電子商品引換券を発行するためのシステム及びその方法
WO2003034227A2 (fr) * 2001-10-12 2003-04-24 Koninklijke Philips Electronics N.V. Appareil et procede de lecture ou d'ecriture de donnees utilisateur
US7006656B2 (en) * 2001-10-15 2006-02-28 The Research Foundation Of Suny Lossless embedding of data in digital objects
US8204929B2 (en) * 2001-10-25 2012-06-19 International Business Machines Corporation Hiding sensitive information
EP1464172B1 (fr) 2001-12-24 2013-04-24 Intrasonics S.A.R.L. Systeme de legendage
US6954541B2 (en) 2002-05-29 2005-10-11 Xerox Corporation Method of detecting changes occurring in image editing using watermarks
US20050271246A1 (en) * 2002-07-10 2005-12-08 Sharma Ravi K Watermark payload encryption methods and systems
JP3922369B2 (ja) * 2003-01-21 2007-05-30 日本ビクター株式会社 埋め込み情報の記録装置及び再生装置並びに記録用プログラム及び再生用プログラム
US9818136B1 (en) 2003-02-05 2017-11-14 Steven M. Hoffberg System and method for determining contingent relevance
US7194106B2 (en) 2003-04-03 2007-03-20 Digimarc Corporation Creating electronic forms through digital watermarking
WO2004107120A2 (fr) * 2003-05-22 2004-12-09 Sony Electronics Inc. Procedes et appareils de sequestration de contenu
US7116374B2 (en) * 2003-08-26 2006-10-03 Koplar Interactive Systems International, L.L.C. Method and system for enhanced modulation of video signals
KR20050078767A (ko) * 2004-02-02 2005-08-08 삼성전자주식회사 디지털 영상 워터마킹 장치 및 그 방법
WO2005076985A2 (fr) * 2004-02-04 2005-08-25 Digimarc Corporation Signaux d'images sur puce a filigranage numerique et journaux de voyages photographiques par filigranage numerique
US7664175B1 (en) 2004-06-16 2010-02-16 Koplar Interactive Systems International, L.L.C. Mark-based content modulation and detection
US20060282884A1 (en) * 2005-06-09 2006-12-14 Ori Pomerantz Method and apparatus for using a proxy to manage confidential information
US8874477B2 (en) 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method
US7860903B2 (en) * 2005-12-23 2010-12-28 Teradata Us, Inc. Techniques for generic data extraction
US8792826B2 (en) * 2006-04-03 2014-07-29 Eckey Corporation Methods for determining proximity between radio frequency devices and controlling switches
US8150097B2 (en) * 2007-01-24 2012-04-03 Sony Corporation Concealed metadata transmission system
US20080307233A1 (en) * 2007-06-09 2008-12-11 Bank Of America Corporation Encoded Data Security Mechanism
US8650402B2 (en) * 2007-08-17 2014-02-11 Wong Technologies L.L.C. General data hiding framework using parity for minimal switching
US8798133B2 (en) * 2007-11-29 2014-08-05 Koplar Interactive Systems International L.L.C. Dual channel encoding and detection
NZ564196A (en) * 2007-12-10 2010-08-27 Resonance Holdings Ltd Electronic lock for security system and key on a wireless device including methods of encoding data
KR100965604B1 (ko) * 2008-03-17 2010-06-23 경기대학교 산학협력단 이미지를 이용한 메시지 제공 방법 및 그 장치
CN101577619B (zh) * 2008-05-08 2013-05-01 吴志军 基于信息隐藏的实时语音保密通信系统
GB2460306B (en) 2008-05-29 2013-02-13 Intrasonics Sarl Data embedding system
US10943030B2 (en) * 2008-12-15 2021-03-09 Ibailbonding.Com Securable independent electronic document
WO2010090533A2 (fr) 2009-01-07 2010-08-12 Resonance Holdings Limited Système et procédé d'authentification bluetooth
WO2011111191A1 (fr) * 2010-03-10 2011-09-15 富士通株式会社 Dispositif de décodage d'image, procédé de décodage d'image, et programme informatique de décodage d'image
US9015494B2 (en) * 2011-07-11 2015-04-21 Salesforce.Com, Inc. Methods and apparatus for digital steganography
CN102663668B (zh) * 2012-04-06 2014-04-16 王涛 一种基于连续矢量图形的数字水印系统及实现方法
CN105160694B (zh) * 2015-10-15 2017-05-03 深圳大学 一种数据隐藏方法及隐藏系统
US10212306B1 (en) * 2016-03-23 2019-02-19 Amazon Technologies, Inc. Steganographic camera communication
CN110516775B (zh) * 2019-07-11 2023-07-25 西安邮电大学 基于qr码用户秘密信息隐藏方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2640939B2 (ja) * 1987-03-02 1997-08-13 東洋通信機株式会社 画像へのデータ合成方法
US4969041A (en) * 1988-09-23 1990-11-06 Dubner Computer Systems, Inc. Embedment of data in a video signal
US5319453A (en) * 1989-06-22 1994-06-07 Airtrax Method and apparatus for video signal encoding, decoding and monitoring
US5987127A (en) * 1992-06-30 1999-11-16 Minolta Co., Ltd. Image forming apparatus and copy management system
JP3598331B2 (ja) * 1992-06-30 2004-12-08 コニカミノルタビジネステクノロジーズ株式会社 画像処理装置
US5721788A (en) * 1992-07-31 1998-02-24 Corbis Corporation Method and system for digital image signatures
US5379345A (en) * 1993-01-29 1995-01-03 Radio Audit Systems, Inc. Method and apparatus for the processing of encoded data in conjunction with an audio broadcast
JP3599795B2 (ja) * 1993-09-03 2004-12-08 株式会社東芝 画像処理装置
US5652626A (en) * 1993-09-03 1997-07-29 Kabushiki Kaisha Toshiba Image processing apparatus using pattern generating circuits to process a color image
US5748783A (en) * 1995-05-08 1998-05-05 Digimarc Corporation Method and apparatus for robust information coding
US5659726A (en) * 1995-02-23 1997-08-19 Sandford, Ii; Maxwell T. Data embedding
DE19520232C1 (de) * 1995-06-01 1996-08-14 Siemens Ag Verfahren zur Verschlüsselung von Folgen, die aus zahlenkodierten Informationseinheiten bestehen
US5689587A (en) * 1996-02-09 1997-11-18 Massachusetts Institute Of Technology Method and apparatus for data hiding in images

Also Published As

Publication number Publication date
EP0852441A4 (fr) 2003-01-15
CA2230071A1 (fr) 1997-12-24
CN1207894C (zh) 2005-06-22
WO1997049235A1 (fr) 1997-12-24
US6512835B1 (en) 2003-01-28
CN1128535C (zh) 2003-11-19
EP0852441A1 (fr) 1998-07-08
KR19990044042A (ko) 1999-06-25
KR100295007B1 (ko) 2001-10-26
WO1997049235A8 (fr) 2001-07-26
US6055321A (en) 2000-04-25
CN1198284A (zh) 1998-11-04
JP3251594B2 (ja) 2002-01-28
DE69739969D1 (de) 2010-10-07
TW347506B (en) 1998-12-11
EP0852441B1 (fr) 2010-08-25
CN1474591A (zh) 2004-02-11
MY125067A (en) 2006-07-31

Similar Documents

Publication Publication Date Title
HK1015595A1 (en) A data hiding and extracting method and a system for transmitting data to and receiving data from a network
IL126574A0 (en) A method and system to transmit video/data signals from a device to a communications network connection card
IL134256A0 (en) System and method for transmitting and receiving data
HUP9902442A3 (en) System and method for transmitting data
IL129770A (en) System and method for data communication
GB2298339B (en) Method and system for data transmission
EP0993724A4 (fr) Procede et appareil de transmission de donnees dans un systeme de telecommunications a bande large
IL133862A0 (en) Method and apparatus for transmitting signals in a communication system
IL134645A0 (en) Apparatus and method for transmitting signals in a communication system
GB2301992B (en) Method and system for data communication
HK1003731A1 (en) Method and system for archiving information on a communication network
HUP0100650A3 (en) Data hiding method and data extracting method
IL117576A0 (en) A system and method for transmitting signals from a first location to a twisted pair line
AU6188299A (en) A method and a system for transmitting data between units
SG83083A1 (en) Data copyright management system
EP0895379A4 (fr) Procede de transmission de donnees
GB2319699B (en) System and method for packet data communication
AU6672298A (en) System and method for sending and receiving a video as a slide show over a computer network
EP0977398A4 (fr) Materiel, systeme et procede pour communiquer des donnees
AU1225400A (en) System and method for transmitting and receiving data in a network
EP1023802A4 (fr) Procede et systeme de transmission de donnees a une unite mobile de communication
GB9611403D0 (en) Network data analysis method
AU6888300A (en) System and method for capturing network data and identifying network events therefrom
IL131921A0 (en) System and method for spectrally shaping transmitted data signals
GB2322509B (en) Communication system and method for transmitting information

Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20080213