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GB2311705B - Method and apparatus for compressing arbitrary data - Google Patents

Method and apparatus for compressing arbitrary data

Info

Publication number
GB2311705B
GB2311705B GB9711501A GB9711501A GB2311705B GB 2311705 B GB2311705 B GB 2311705B GB 9711501 A GB9711501 A GB 9711501A GB 9711501 A GB9711501 A GB 9711501A GB 2311705 B GB2311705 B GB 2311705B
Authority
GB
United Kingdom
Prior art keywords
arbitrary data
compressing
compressing arbitrary
data
arbitrary
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
GB9711501A
Other versions
GB2311705A (en
GB9711501D0 (en
Inventor
Michael Gormish
Edward L Schwartz
Ahmad Zandi
James D Allen
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
Original Assignee
Ricoh Co 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
Priority claimed from US08/521,750 external-priority patent/US5710562A/en
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of GB9711501D0 publication Critical patent/GB9711501D0/en
Publication of GB2311705A publication Critical patent/GB2311705A/en
Application granted granted Critical
Publication of GB2311705B publication Critical patent/GB2311705B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • 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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/4006—Conversion to or from arithmetic code
    • 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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB9711501A 1995-08-31 1996-08-30 Method and apparatus for compressing arbitrary data Expired - Fee Related GB2311705B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/521,750 US5710562A (en) 1995-08-31 1995-08-31 Method and apparatus for compressing arbitrary data
GB9618143A GB2305089B (en) 1995-08-31 1996-08-30 Method and apparatus for compressing arbitrary data

Publications (3)

Publication Number Publication Date
GB9711501D0 GB9711501D0 (en) 1997-07-30
GB2311705A GB2311705A (en) 1997-10-01
GB2311705B true GB2311705B (en) 1998-04-15

Family

ID=26309950

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9711501A Expired - Fee Related GB2311705B (en) 1995-08-31 1996-08-30 Method and apparatus for compressing arbitrary data
GB9711500A Expired - Fee Related GB2311704B (en) 1995-08-31 1996-08-30 Method and apparatus for compressing arbitrary data

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9711500A Expired - Fee Related GB2311704B (en) 1995-08-31 1996-08-30 Method and apparatus for compressing arbitrary data

Country Status (1)

Country Link
GB (2) GB2311705B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6141446A (en) 1994-09-21 2000-10-31 Ricoh Company, Ltd. Compression and decompression system with reversible wavelets and lossy reconstruction
EP3540946A1 (en) * 2002-04-26 2019-09-18 NTT DoCoMo, Inc. Signal decoding method
WO2012040857A1 (en) 2010-10-01 2012-04-05 Research In Motion Limited Methods and devices for parallel encoding and decoding using a bitstream structured for reduced delay
JP7074989B2 (en) * 2018-08-31 2022-05-25 国立大学法人 筑波大学 Data compressor, data compression method, data compression program, data decompression device, data decompression method, data decompression program and data compression decompression system
US11728826B2 (en) 2021-05-24 2023-08-15 Google Llc Compression and decompression in hardware for data processing
GB2628620A (en) * 2023-03-30 2024-10-02 Sony Group Corp Data encoding and decoding

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285374A (en) * 1993-12-23 1995-07-05 Ricoh Kk Parallel encoding and decoding of data
GB2293735A (en) * 1994-09-30 1996-04-03 Ricoh Kk Parallel encoding and decoding of data
EP0755155A2 (en) * 1995-07-18 1997-01-22 Hewlett-Packard Company System and method for lossless image compression

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023611A (en) * 1989-07-28 1991-06-11 At&T Bell Laboratories Entropy encoder/decoder including a context extractor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285374A (en) * 1993-12-23 1995-07-05 Ricoh Kk Parallel encoding and decoding of data
GB2293735A (en) * 1994-09-30 1996-04-03 Ricoh Kk Parallel encoding and decoding of data
EP0755155A2 (en) * 1995-07-18 1997-01-22 Hewlett-Packard Company System and method for lossless image compression

Also Published As

Publication number Publication date
GB2311705A (en) 1997-10-01
GB9711501D0 (en) 1997-07-30
GB2311704B (en) 1998-04-15
GB9711500D0 (en) 1997-07-30
GB2311704A (en) 1997-10-01

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Legal Events

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

Effective date: 20150830