GB2240448B - High quality color image compression system - Google Patents

High quality color image compression system

Info

Publication number
GB2240448B
GB2240448B GB9026381A GB9026381A GB2240448B GB 2240448 B GB2240448 B GB 2240448B GB 9026381 A GB9026381 A GB 9026381A GB 9026381 A GB9026381 A GB 9026381A GB 2240448 B GB2240448 B GB 2240448B
Authority
GB
United Kingdom
Prior art keywords
color image
high quality
image compression
compression system
quality color
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
GB9026381A
Other languages
English (en)
Other versions
GB9026381D0 (en
GB2240448A (en
Inventor
Steven Michael Blonstein
James Dow Allen
Kevin Patrick Corcoran
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.)
Ricoh Co Ltd
Ricoh Americas Corp
Original Assignee
Ricoh Co Ltd
Ricoh Americas Corp
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 Ricoh Co Ltd, Ricoh Americas Corp filed Critical Ricoh Co Ltd
Publication of GB9026381D0 publication Critical patent/GB9026381D0/en
Publication of GB2240448A publication Critical patent/GB2240448A/en
Application granted granted Critical
Publication of GB2240448B publication Critical patent/GB2240448B/en
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
    • H04N1/46—Colour picture communication systems
    • H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
    • H04N1/646—Transmitting or storing colour television type signals, e.g. PAL, Lab; Their conversion into additive or subtractive colour signals or vice versa therefor
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
GB9026381A 1989-12-04 1990-12-04 High quality color image compression system Expired - Fee Related GB2240448B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44538789A 1989-12-04 1989-12-04

Publications (3)

Publication Number Publication Date
GB9026381D0 GB9026381D0 (en) 1991-01-23
GB2240448A GB2240448A (en) 1991-07-31
GB2240448B true GB2240448B (en) 1994-06-22

Family

ID=23768704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9026381A Expired - Fee Related GB2240448B (en) 1989-12-04 1990-12-04 High quality color image compression system

Country Status (4)

Country Link
JP (1) JPH03267880A (fr)
DE (1) DE4038518C2 (fr)
FR (1) FR2655505B1 (fr)
GB (1) GB2240448B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582341B1 (fr) * 1992-08-03 1998-11-04 Koninklijke Philips Electronics N.V. Dispositif de lecture d'information

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716453A (en) * 1985-06-20 1987-12-29 At&T Bell Laboratories Digital video transmission system
EP0274861A2 (fr) * 1986-12-08 1988-07-20 Nortel Networks Corporation Codage de signaux numériques dans deux canaux de codage
GB2211691A (en) * 1987-10-28 1989-07-05 Hitachi Ltd Picture coding and interpolation apparatus
EP0361761A2 (fr) * 1988-09-30 1990-04-04 AT&T Corp. Codeur vidéo numérique
GB2230673A (en) * 1989-04-14 1990-10-24 Philips Electronic Associated Generating a series of dpcm code words for storing colour image data

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4661862A (en) * 1984-04-27 1987-04-28 Rca Corporation Differential PCM video transmission system employing horizontally offset five pixel groups and delta signals having plural non-linear encoding functions
US4797729A (en) * 1988-02-05 1989-01-10 Eastman Kodak Company System incorporating an error tolerant picture compression algorithm

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716453A (en) * 1985-06-20 1987-12-29 At&T Bell Laboratories Digital video transmission system
EP0274861A2 (fr) * 1986-12-08 1988-07-20 Nortel Networks Corporation Codage de signaux numériques dans deux canaux de codage
GB2211691A (en) * 1987-10-28 1989-07-05 Hitachi Ltd Picture coding and interpolation apparatus
EP0361761A2 (fr) * 1988-09-30 1990-04-04 AT&T Corp. Codeur vidéo numérique
GB2230673A (en) * 1989-04-14 1990-10-24 Philips Electronic Associated Generating a series of dpcm code words for storing colour image data

Also Published As

Publication number Publication date
GB9026381D0 (en) 1991-01-23
FR2655505B1 (fr) 1997-08-08
DE4038518C2 (de) 1994-01-27
JPH03267880A (ja) 1991-11-28
GB2240448A (en) 1991-07-31
FR2655505A1 (fr) 1991-06-07
DE4038518A1 (de) 1991-06-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20061204