ES8406019A1 - Una disposicion de conversion de datos para usarse en un sistema de facsimil. - Google Patents

Una disposicion de conversion de datos para usarse en un sistema de facsimil.

Info

Publication number
ES8406019A1
ES8406019A1 ES518614A ES518614A ES8406019A1 ES 8406019 A1 ES8406019 A1 ES 8406019A1 ES 518614 A ES518614 A ES 518614A ES 518614 A ES518614 A ES 518614A ES 8406019 A1 ES8406019 A1 ES 8406019A1
Authority
ES
Spain
Prior art keywords
data
facsimile data
compression circuit
data converting
converting system
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
ES518614A
Other languages
English (en)
Other versions
ES518614A0 (es
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of ES8406019A1 publication Critical patent/ES8406019A1/es
Publication of ES518614A0 publication Critical patent/ES518614A0/es
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/417—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding
    • H04N1/4175—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding involving the encoding of tone transitions with respect to tone transitions in a reference line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

SISTEMA DE CONVERSION DE DATOS PARA SU UTILIZACION EN UN SISTEMA DE FACSIMIL, EN PARTICULAR, SISTEMA PARA CODIFICAR ELEMENTOS DE IMAGEN Y DESCODIFICAR DATOS COMPRIMIDOS EN EL SISTEMA DE FACSIMIL.CONSTA DE UN CIRCUITO (50) DE COMPRESION DE DATOS QUE GENERA UN BLOQUE DE LONGITUD DIFERENCIAL; DE UNA TABLA (21) DE MEMORIA ROM PARA CODIFICAR UN BLOQUE DIFERENCIAL EN DATOS COMPRIMIDOS; Y DE UN COMPARADOR (51) QUE COMPARA LOS DATOS COMPRIMIDOS DADOS CON UNA SECUENCIA DE DATOS DESDE EL CIRCUITO DE COMPRESION DE DATOS. CUANDO SE PRODUCE CONCORDANCIA ENTRE LOS DATOSCOMPRIMIDOS DADOS, SE OBTIENEN EN EL CIRCUITO DE COMPRESION DE DATOS, DATOS REPRODUCIDOS O DATOS DE LONGITUD DIFERENCIAL.
ES518614A 1981-12-29 1982-12-28 Una disposicion de conversion de datos para usarse en un sistema de facsimil. Granted ES518614A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56213573A JPS58129876A (ja) 1981-12-29 1981-12-29 フアクシミリ装置

Publications (2)

Publication Number Publication Date
ES8406019A1 true ES8406019A1 (es) 1984-06-16
ES518614A0 ES518614A0 (es) 1984-06-16

Family

ID=16641433

Family Applications (1)

Application Number Title Priority Date Filing Date
ES518614A Granted ES518614A0 (es) 1981-12-29 1982-12-28 Una disposicion de conversion de datos para usarse en un sistema de facsimil.

Country Status (7)

Country Link
US (1) US4543612A (es)
EP (1) EP0083247B1 (es)
JP (1) JPS58129876A (es)
AU (1) AU536110B2 (es)
CA (1) CA1203887A (es)
DE (1) DE3267850D1 (es)
ES (1) ES518614A0 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987569A (ja) * 1982-11-11 1984-05-21 Toshiba Corp デ−タ自動連続処理回路
JPS59161974A (ja) * 1983-03-07 1984-09-12 Nec Corp フアクシミリ装置
US4682215A (en) * 1984-05-28 1987-07-21 Ricoh Company, Ltd. Coding system for image processing apparatus
JPS62501115A (ja) * 1984-11-16 1987-04-30 ベリ−ゼ，コンスタンチン デ−タ圧縮コンピュ−タシステム及びそのための方法
US4631521A (en) * 1984-12-31 1986-12-23 Wang Laboratories, Inc. Method and apparatus for differential run-length coding
US4799110A (en) * 1985-08-02 1989-01-17 Canon Kabushiki Kaisha Image signal coding apparatus
JPH0799856B2 (ja) * 1985-12-23 1995-10-25 キヤノン株式会社 画像信号の復号化装置
JPH0799857B2 (ja) * 1985-12-23 1995-10-25 キヤノン株式会社 画像信号の復号化装置
WO1988007306A1 (en) * 1987-03-17 1988-09-22 Digital Equipment Corporation System for producing dithered images from continuous-tone image data
AU605298B2 (en) * 1987-05-29 1991-01-10 Digital Equipment Corporation System for producing dithered images on asymmetric grids
US5146221A (en) * 1989-01-13 1992-09-08 Stac, Inc. Data compression apparatus and method
US5532694A (en) * 1989-01-13 1996-07-02 Stac Electronics, Inc. Data compression apparatus and method using matching string searching and Huffman encoding
US6215560B1 (en) 1990-07-13 2001-04-10 Canon Kabushiki Kaisha Image processing apparatus for producing high resolution image data based on a memory area capacity
US5689255A (en) * 1995-08-22 1997-11-18 Hewlett-Packard Company Method and apparatus for compressing and decompressing image data
JPH11284844A (ja) * 1998-03-27 1999-10-15 Oki Data Corp ２値画像データの解析及び変換処理方法
JP2002036636A (ja) * 2000-07-19 2002-02-06 Mitsubishi Electric Corp 画像データ変換装置および画像データ変換方法
US6895119B2 (en) * 2002-03-14 2005-05-17 Winbond Electronics Corp. Method and apparatus for decoding compressed image data and capable of preventing error propagation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474442A (en) * 1966-10-03 1969-10-21 Xerox Corp Format generator circuit
AU503988B2 (en) * 1975-11-25 1979-09-27 Rudolf Hell Gmbh Digital programme length coding with redundancy reduction forthe transmission of binary coded image information
FR2441297A1 (fr) * 1978-11-09 1980-06-06 Cit Alcatel Dispositif de conversion binaire et applications aux emetteurs et recepteurs d'informations d'image a reduction de redondance
JPS55102968A (en) * 1979-01-31 1980-08-06 Sharp Corp Run-length decoding system for mh code
US4334246A (en) * 1980-05-16 1982-06-08 Xerox Corporation Data decompressor circuit
US4386373A (en) * 1980-07-18 1983-05-31 Ricoh Company, Ltd. Facsimile apparatus

Also Published As

Publication number Publication date
EP0083247A3 (en) 1983-10-05
EP0083247B1 (en) 1985-12-04
AU536110B2 (en) 1984-04-19
DE3267850D1 (en) 1986-01-16
JPS6338913B2 (es) 1988-08-02
JPS58129876A (ja) 1983-08-03
AU9179882A (en) 1983-08-18
US4543612A (en) 1985-09-24
CA1203887A (en) 1986-04-29
ES518614A0 (es) 1984-06-16
EP0083247A2 (en) 1983-07-06

Similar Documents

Publication Publication Date Title
ES8406019A1 (es) Una disposicion de conversion de datos para usarse en un sistema de facsimil.
AU582807B2 (en) Highly efficient coding apparatus for a digital video signal
HK45091A (en) Method for the adaptive transform coding and decoding of a picture sequence,and device for carrying out such a method
HUT63529A (en) Digital signal processing system, coding circuit and decoding circuit
TW337565B (en) A data transfer system with the pre-compression data in proper maintenance
EP0122805A3 (en) Block coded modulation system
GB2342244A (en) An efficient table-lookup based visually-lossless image compression scheme
EP0155980A3 (en) Digital data compression method and means
KR930017344A (ko) 디지탈 정보 신호 전달 장치 및 방법
AU1857683A (en) Dpcm coder
JPS5588464A (en) Remote-side confirmation system for facsimile equipment
DE3278850D1 (en) Data translation apparatus translating between raw and compression encoded data forms
EP0340041A3 (en) Start, step, stop unary coding for data compression
JPS57112184A (en) System for processing of picture data
JPS5597780A (en) Signal processing system
JPS57140069A (en) Coder for video signal
JPS5310914A (en) Band compression encoding system
EP0158409A3 (en) Improved threshold detector
JPS51142906A (en) Facsimile transmission system
GB2106348B (en) Video signal coding
JPS5718160A (en) Information transmission equipment
JPS56107673A (en) Adaptive variable length encoding device
JPS53129516A (en) Compression system for facsimile information
JPS64879A (en) Picture data compressing method by vector quantization
IL111325A (en) Apparatus and method for compressing binarized images

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990201