FR2381426B1 - Systeme de compression de donnees pour la telecopie - Google Patents

Systeme de compression de donnees pour la telecopie

Info

Publication number
FR2381426B1
FR2381426B1 FR7804677A FR7804677A FR2381426B1 FR 2381426 B1 FR2381426 B1 FR 2381426B1 FR 7804677 A FR7804677 A FR 7804677A FR 7804677 A FR7804677 A FR 7804677A FR 2381426 B1 FR2381426 B1 FR 2381426B1
Authority
FR
France
Prior art keywords
faxing
data compression
compression system
data
compression
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
Application number
FR7804677A
Other languages
English (en)
Other versions
FR2381426A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2381426A1 publication Critical patent/FR2381426A1/fr
Application granted granted Critical
Publication of FR2381426B1 publication Critical patent/FR2381426B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/4115—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures involving the recognition of specific patterns, e.g. by symbol matching
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Image Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR7804677A 1977-02-18 1978-02-20 Systeme de compression de donnees pour la telecopie Expired FR2381426B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/770,021 US4091424A (en) 1977-02-18 1977-02-18 Facsimile compression system

Publications (2)

Publication Number Publication Date
FR2381426A1 FR2381426A1 (fr) 1978-09-15
FR2381426B1 true FR2381426B1 (fr) 1985-08-02

Family

ID=25087226

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7804677A Expired FR2381426B1 (fr) 1977-02-18 1978-02-20 Systeme de compression de donnees pour la telecopie

Country Status (5)

Country Link
US (1) US4091424A (fr)
JP (1) JPS53121512A (fr)
CA (1) CA1131344A (fr)
FR (1) FR2381426B1 (fr)
GB (1) GB1567726A (fr)

Families Citing this family (57)

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DE2825912A1 (de) * 1978-06-13 1980-01-03 Siemens Ag Verfahren zur uebertragung von aufzeichnungen mit gemischtem darstellungsinhalt auf einen sichtanzeigeschirm, insbesondere in fernsprechanlagen
US4264808A (en) * 1978-10-06 1981-04-28 Ncr Corporation Method and apparatus for electronic image processing of documents for accounting purposes
JPS5610774A (en) * 1979-07-09 1981-02-03 Ricoh Co Ltd Facsimile device
US4410916A (en) * 1979-08-24 1983-10-18 Compression Labs, Inc. Dual mode facsimile coding system and method
GB2059728B (en) * 1979-09-27 1983-03-30 Ibm Digital data display system
US4403340A (en) * 1981-01-06 1983-09-06 Caere Corporation OCR Matrix extractor
DE3101543A1 (de) * 1981-01-20 1982-08-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt "buerokommunikationssystem"
JPS57191784A (en) * 1981-05-20 1982-11-25 Toshiba Corp Picture data processing system
US4463386A (en) * 1982-05-03 1984-07-31 International Business Machines Corporation Facsimile data reduction
JPS57197681A (en) * 1982-05-24 1982-12-03 Hitachi Ltd Drawing recognizing device
US4494150A (en) * 1982-07-13 1985-01-15 International Business Machines Corporation Word autocorrelation redundancy match facsimile compression for text processing systems
FR2532773B1 (fr) * 1982-09-07 1987-06-19 Jeumont Schneider Procede de lecture et de transmission de caracteres
US4590606A (en) * 1982-12-13 1986-05-20 International Business Machines Corporation Multi-function image processing system
US4499499A (en) * 1982-12-29 1985-02-12 International Business Machines Corporation Method for identification and compression of facsimile symbols in text processing systems
US4606069A (en) * 1983-06-10 1986-08-12 At&T Bell Laboratories Apparatus and method for compression of facsimile information by pattern matching
US4706264A (en) * 1983-06-22 1987-11-10 Chung Telecommunications Digital data compression method and means
JPS60169275A (ja) * 1984-02-13 1985-09-02 Toshiba Corp ２次元圧縮装置
EP0215975A1 (fr) * 1985-09-25 1987-04-01 Maurer Electronics Gmbh Procédé et dispositif de stockage et de reproduction de modèles graphiques, en particulier de signatures
US4816914A (en) * 1987-01-07 1989-03-28 Pictel Corporation Method and apparatus for efficiently encoding and decoding image sequences
US4774587A (en) * 1987-06-02 1988-09-27 Eastman Kodak Company Still video transceiver processor
US4849810A (en) * 1987-06-02 1989-07-18 Picturetel Corporation Hierarchial encoding method and apparatus for efficiently communicating image sequences
US4772956A (en) * 1987-06-02 1988-09-20 Eastman Kodak Company Dual block still video compander processor
US4764805A (en) * 1987-06-02 1988-08-16 Eastman Kodak Company Image transmission system with line averaging preview mode using two-pass block-edge interpolation
FR2618623A1 (fr) * 1987-07-24 1989-01-27 Thomson Csf Dispositif de codage-decodage d'images de documents utilisant la reconnaissance de formes et son utilisation dans un systeme de telecopie
IT1218950B (it) * 1988-01-12 1990-04-24 Sarin Societa Servizi Ausiliar Procedimento e sistema per l'erogazione integrata particolarmente a fini pubblicitari di servizi telematici e di informazione grafica su terminali d'utente
US4897717A (en) * 1988-03-30 1990-01-30 Starsignal, Inc. Computer-based video compression system
US4918722A (en) * 1988-05-11 1990-04-17 Brooktrout Technology, Inc. Control of electronic information delivery
US7365884B2 (en) * 1988-09-22 2008-04-29 Catch Curve, Inc. Facsimile telecommunications system and method
US6785021B1 (en) 1988-09-22 2004-08-31 Audiofax, Ip, Llc Facsimile telecommunications system and method
US4994926C1 (en) * 1988-09-22 2001-07-03 Audiofax Ip L L C Facsimile telecommunications system and method
US5459584A (en) 1988-09-22 1995-10-17 Audiofax, Inc. Facsimile telecommunications system and method
US4965677A (en) * 1989-02-01 1990-10-23 International Business Machines Corporation Compression of binary halftones
US5305398A (en) * 1989-10-10 1994-04-19 Unisys Corporation Method and apparatus for scaling image data
US5287416A (en) * 1989-10-10 1994-02-15 Unisys Corporation Parallel pipelined image processor
US5055919A (en) * 1989-10-10 1991-10-08 Unisys Corporation Apparatus for image data transposition and compression/decompression
US5093871A (en) * 1989-10-10 1992-03-03 Unisys Corporation Method and apparatus for effecting background suppression of image data
US5140444A (en) * 1989-10-10 1992-08-18 Unisys Corporation Image data processor
US5095374A (en) * 1989-10-10 1992-03-10 Unisys Corporation Method and apparatus for lossless compression and decompression of image data
US5029226A (en) * 1989-10-10 1991-07-02 Unisys Corporation Method and apparatus for effecting spot/void filtering of image data
US5020124A (en) * 1989-10-10 1991-05-28 Unisys Corporation Method and apparatus for detecting document size in an imaging system
US5048104A (en) * 1989-10-10 1991-09-10 Unisys Corporation Method and apparatus for transposing image data
US5270833A (en) * 1990-05-30 1993-12-14 Makoto Kubokawa Facsimile communication method and system for transmitting received and memorized data in a memory of one facsimile unit to another facsimile unit and a facsimile apparatus provided thereof
US5157740A (en) * 1991-02-07 1992-10-20 Unisys Corporation Method for background suppression in an image data processing system
US7525691B2 (en) * 1991-02-12 2009-04-28 Catch Curve, Inc. Facsimile telecommunications system and method
US5303313A (en) * 1991-12-16 1994-04-12 Cartesian Products, Inc. Method and apparatus for compression of images
US5331431A (en) * 1992-08-31 1994-07-19 Motorola, Inc. Method and apparatus for transmitting and receiving encoded data
US5625711A (en) * 1994-08-31 1997-04-29 Adobe Systems Incorporated Method and apparatus for producing a hybrid data structure for displaying a raster image
US5729637A (en) * 1994-08-31 1998-03-17 Adobe Systems, Inc. Method and apparatus for producing a hybrid data structure for displaying a raster image
KR0140964B1 (ko) * 1994-10-28 1998-06-15 구자홍 텔레비젼(tv) 수상기의 통신 제어 장치와 통신 제어방법
WO1996036164A2 (fr) * 1995-05-09 1996-11-14 Apple Computer, Inc. Procede et appareil de compression de donnees d'image
US6081300A (en) * 1995-05-24 2000-06-27 Thomson Consumer Electronics, Inc. Apparatus and method for generating on-screen-display messages using stored bitstreams
GB9510484D0 (en) * 1995-05-24 1995-07-19 Thomson Consumer Electronics Creating an on screen display
US5881142A (en) * 1995-07-18 1999-03-09 Jetstream Communications, Inc. Integrated communications control device for a small office configured for coupling within a scalable network
US6301391B1 (en) 1997-10-15 2001-10-09 Ricoh Company, Ltd. Coding apparatus
JP2003069649A (ja) * 2001-08-22 2003-03-07 Murata Mach Ltd ファクシミリサーバ
US7310769B1 (en) 2003-03-12 2007-12-18 Adobe Systems Incorporated Text encoding using dummy font
US7822278B1 (en) * 2005-09-20 2010-10-26 Teradici Corporation Methods and apparatus for encoding a digital video signal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086738B (de) * 1958-12-27 1960-08-11 Hell Rudolf Dr Ing Fa Verfahren und elektronische Vorrichtung zur Aussendung von Schriftzeichen im Hell-Code oder einem aehnlichen Code fuer Blattschreiberempfang (Faksimileverfahren)
CA1005916A (en) * 1972-08-16 1977-02-22 International Business Machines Corporation Video compaction for printed text
DE2423817A1 (de) * 1973-07-16 1975-02-06 Ibm Verfahren und schaltungsanordnungen zur codierung zweidimensionaler bildinformationen
US3980809A (en) * 1973-07-16 1976-09-14 International Business Machines Corporation Encoding logic for reduced bandwidth pictorial data transmission system
US3911420A (en) * 1973-11-23 1975-10-07 Xerox Corp Display system including a high resolution character generator

Also Published As

Publication number Publication date
CA1131344A (fr) 1982-09-07
FR2381426A1 (fr) 1978-09-15
JPS53121512A (en) 1978-10-24
GB1567726A (en) 1980-05-21
US4091424A (en) 1978-05-23

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Legal Events

Date Code Title Description
ST Notification of lapse