GB2360915B - Data compression - Google Patents

Data compression

Info

Publication number
GB2360915B
GB2360915B GB0018255A GB0018255A GB2360915B GB 2360915 B GB2360915 B GB 2360915B GB 0018255 A GB0018255 A GB 0018255A GB 0018255 A GB0018255 A GB 0018255A GB 2360915 B GB2360915 B GB 2360915B
Authority
GB
United Kingdom
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
GB0018255A
Other versions
GB2360915A (en
GB0018255D0 (en
Inventor
Jason Charles Pelly
Stephen Mark Keating
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.)
Sony Europe Ltd
Original Assignee
Sony United Kingdom 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 Sony United Kingdom Ltd filed Critical Sony United Kingdom Ltd
Publication of GB0018255D0 publication Critical patent/GB0018255D0/en
Publication of GB2360915A publication Critical patent/GB2360915A/en
Application granted granted Critical
Publication of GB2360915B publication Critical patent/GB2360915B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3084—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • H03M7/48—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind alternating with other codes during the code conversion process, e.g. run-length coding being performed only as long as sufficientlylong runs of digits of the same kind are present

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB0018255A 2000-03-30 2000-07-25 Data compression Expired - Fee Related GB2360915B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0007781A GB0007781D0 (en) 2000-03-30 2000-03-30 Data compression

Publications (3)

Publication Number Publication Date
GB0018255D0 GB0018255D0 (en) 2000-09-13
GB2360915A GB2360915A (en) 2001-10-03
GB2360915B true GB2360915B (en) 2004-01-28

Family

ID=9888799

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0007781A Ceased GB0007781D0 (en) 2000-03-30 2000-03-30 Data compression
GB0018255A Expired - Fee Related GB2360915B (en) 2000-03-30 2000-07-25 Data compression

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0007781A Ceased GB0007781D0 (en) 2000-03-30 2000-03-30 Data compression

Country Status (1)

Country Link
GB (2) GB0007781D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8787455B2 (en) * 2008-09-05 2014-07-22 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method for entropically transcoding a first data stream into a second compressed binary data stream, and corresponding computer program and image recording device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0817977D0 (en) 2008-10-01 2008-11-05 Craven Peter G Improved lossy coding of signals
FR2982447A1 (en) 2011-11-07 2013-05-10 France Telecom METHOD FOR ENCODING AND DECODING IMAGES, CORRESPONDING ENCODING AND DECODING DEVICE AND COMPUTER PROGRAMS
FR2982446A1 (en) * 2011-11-07 2013-05-10 France Telecom METHOD FOR ENCODING AND DECODING IMAGES, CORRESPONDING ENCODING AND DECODING DEVICE AND COMPUTER PROGRAMS
GB2513111A (en) 2013-04-08 2014-10-22 Sony Corp Data encoding and decoding
GB2516422A (en) * 2013-07-09 2015-01-28 Sony Corp Data encoding and decoding

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293379A (en) * 1991-04-22 1994-03-08 Gandalf Technologies, Inc. Packet-based data compression method
WO1994027374A1 (en) * 1993-05-13 1994-11-24 Apple Computer, Inc. Method and apparatus for efficient compression of data having redundant characteristics
EP0702457A2 (en) * 1994-08-16 1996-03-20 International Business Machines Corporation Method and apparatus for compressing and decompressing data
US5778255A (en) * 1995-10-10 1998-07-07 International Business Machines Corporation Method and system in a data processing system for decompressing multiple compressed bytes in a single machine cycle
WO1999067784A1 (en) * 1998-06-24 1999-12-29 Seagate Technology Llc Efficient run length limited code with short interleaved constraint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293379A (en) * 1991-04-22 1994-03-08 Gandalf Technologies, Inc. Packet-based data compression method
WO1994027374A1 (en) * 1993-05-13 1994-11-24 Apple Computer, Inc. Method and apparatus for efficient compression of data having redundant characteristics
EP0702457A2 (en) * 1994-08-16 1996-03-20 International Business Machines Corporation Method and apparatus for compressing and decompressing data
US5778255A (en) * 1995-10-10 1998-07-07 International Business Machines Corporation Method and system in a data processing system for decompressing multiple compressed bytes in a single machine cycle
WO1999067784A1 (en) * 1998-06-24 1999-12-29 Seagate Technology Llc Efficient run length limited code with short interleaved constraint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8787455B2 (en) * 2008-09-05 2014-07-22 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method for entropically transcoding a first data stream into a second compressed binary data stream, and corresponding computer program and image recording device

Also Published As

Publication number Publication date
GB0007781D0 (en) 2000-05-17
GB2360915A (en) 2001-10-03
GB0018255D0 (en) 2000-09-13

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Legal Events

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

Effective date: 20100725