DE69226919T2 - Verfahren und Vorrichtung zur Datenkompression - Google Patents

Verfahren und Vorrichtung zur Datenkompression

Info

Publication number
DE69226919T2
DE69226919T2 DE69226919T DE69226919T DE69226919T2 DE 69226919 T2 DE69226919 T2 DE 69226919T2 DE 69226919 T DE69226919 T DE 69226919T DE 69226919 T DE69226919 T DE 69226919T DE 69226919 T2 DE69226919 T2 DE 69226919T2
Authority
DE
Germany
Prior art keywords
data compression
compression
data
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
Application number
DE69226919T
Other languages
English (en)
Other versions
DE69226919D1 (de
Inventor
John O G Vieth
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.)
NCR International Inc
Original Assignee
NCR International Inc
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 NCR International Inc filed Critical NCR International Inc
Application granted granted Critical
Publication of DE69226919D1 publication Critical patent/DE69226919D1/de
Publication of DE69226919T2 publication Critical patent/DE69226919T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04N1/40—Picture signal circuits
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original
    • 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
DE69226919T 1991-10-03 1992-10-01 Verfahren und Vorrichtung zur Datenkompression Expired - Fee Related DE69226919T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77079491A 1991-10-03 1991-10-03

Publications (2)

Publication Number Publication Date
DE69226919D1 DE69226919D1 (de) 1998-10-15
DE69226919T2 true DE69226919T2 (de) 1999-05-27

Family

ID=25089690

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226919T Expired - Fee Related DE69226919T2 (de) 1991-10-03 1992-10-01 Verfahren und Vorrichtung zur Datenkompression

Country Status (5)

Country Link
US (1) US6205248B1 (de)
EP (1) EP0535948B1 (de)
JP (1) JPH05219390A (de)
CA (1) CA2063495C (de)
DE (1) DE69226919T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7012720B2 (en) * 2002-01-14 2006-03-14 Chen-Hsiang Shih Method of effacing zipper image

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1188126A (en) 1966-06-15 1970-04-15 Xerox Corp Selective Binary Encoding
US4410916A (en) 1979-08-24 1983-10-18 Compression Labs, Inc. Dual mode facsimile coding system and method
US4314281A (en) 1979-10-12 1982-02-02 Xerox Corporation Shading compensation for scanning apparatus
US4326258A (en) 1980-01-31 1982-04-20 Ncr Canada Ltd - Ncr Canada Ltee Method and apparatus for reducing the gray scale resolution of a digitized image
US4398221A (en) 1980-09-01 1983-08-09 Ricoh Company, Ltd. Facsimile apparatus
US4484349A (en) * 1982-03-11 1984-11-20 Environmental Research Institute Of Michigan Parallel pipeline image processor
US4575768A (en) 1982-03-18 1986-03-11 Ricoh Company, Ltd. Conversion to a two-valued video signal
IT1155650B (it) 1982-03-19 1987-01-28 Olivetti & Co Spa Metodo ed apparecchiatura di compressione e decompressione di informazioni digitali di immagini
US4433346A (en) 1982-03-31 1984-02-21 Xerox Corporation Raster input scanner
US4509194A (en) * 1982-09-09 1985-04-02 Minnesota Mining And Manufacturing Company Apparatus for producing a code word
JPS5980063A (ja) 1982-10-30 1984-05-09 Nec Corp フアクシミリの符号化回路
US4590606A (en) * 1982-12-13 1986-05-20 International Business Machines Corporation Multi-function image processing system
CA1228925A (en) 1983-02-25 1987-11-03 Yoshikazu Yokomizo Data decoding apparatus
US4688100A (en) 1984-10-08 1987-08-18 Canon Kabushiki Kaisha Video data encoding/decoding apparatus
JPS61102872A (ja) * 1984-10-24 1986-05-21 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション ２レベル・イメ−ジ・デ−タの処理方法
JPS61141264A (ja) * 1984-12-14 1986-06-28 Canon Inc 画像処理装置
US4719514A (en) 1985-03-01 1988-01-12 Canon Kabushiki Kaisha Method and apparatus for image transmission
JPS625779A (ja) 1985-03-04 1987-01-12 Kokusai Denshin Denwa Co Ltd <Kdd> 階調フアクシミリ画像信号の符号化方式
FR2579795B1 (fr) 1985-03-29 1987-05-07 Romeo Francoise Machine de saisie, de traitement et de compression de documents
US4597106A (en) 1985-04-15 1986-06-24 Sarkes Tarzian Licensing Laboratory AFT defeat arrangement
US4807043A (en) * 1987-03-24 1989-02-21 Advanced Micro Devices, Inc. Two-dimensional facsimile encoding apparatus with coding and reference line windowing means and color change detectors
US4888812A (en) 1987-12-18 1989-12-19 International Business Machines Corporation Document image processing system
US5060286A (en) * 1989-01-19 1991-10-22 Hewlett-Packard Company Raster row and byte group graphics images data compression method
US5055919A (en) * 1989-10-10 1991-10-08 Unisys Corporation Apparatus for image data transposition and compression/decompression
US5007100A (en) * 1989-10-10 1991-04-09 Unisys Corporation Diagnostic system for a parallel pipelined image processing system
US5048104A (en) * 1989-10-10 1991-09-10 Unisys Corporation Method and apparatus for transposing image data
US5212742A (en) * 1991-05-24 1993-05-18 Apple Computer, Inc. Method and apparatus for encoding/decoding image data
US5317652A (en) * 1991-06-05 1994-05-31 Phoenix Imaging Rotation and position invariant optical character recognition

Also Published As

Publication number Publication date
EP0535948A2 (de) 1993-04-07
CA2063495C (en) 1999-03-30
EP0535948B1 (de) 1998-09-09
US6205248B1 (en) 2001-03-20
DE69226919D1 (de) 1998-10-15
EP0535948A3 (en) 1993-09-29
JPH05219390A (ja) 1993-08-27
CA2063495A1 (en) 1993-04-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: V. BEZOLD & SOZIEN, 80799 MUENCHEN

8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee