GB1401118A - Data processing systems - Google Patents

Data processing systems

Info

Publication number
GB1401118A
GB1401118A GB4240373A GB4240373A GB1401118A GB 1401118 A GB1401118 A GB 1401118A GB 4240373 A GB4240373 A GB 4240373A GB 4240373 A GB4240373 A GB 4240373A GB 1401118 A GB1401118 A GB 1401118A
Authority
GB
United Kingdom
Prior art keywords
sink
tree
vertices
pvb
vertex
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
GB4240373A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1401118A publication Critical patent/GB1401118A/en
Expired 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
    • H03M7/40—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
    • H03M7/425—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 for the decoding process only

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB4240373A 1972-11-10 1973-09-10 Data processing systems Expired GB1401118A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00305631A US3835467A (en) 1972-11-10 1972-11-10 Minimal redundancy decoding method and means

Publications (1)

Publication Number Publication Date
GB1401118A true GB1401118A (en) 1975-07-16

Family

ID=23181627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4240373A Expired GB1401118A (en) 1972-11-10 1973-09-10 Data processing systems

Country Status (5)

Country Link
US (1) US3835467A (enExample)
JP (1) JPS4979648A (enExample)
DE (1) DE2355786A1 (enExample)
FR (1) FR2206630B1 (enExample)
GB (1) GB1401118A (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918047A (en) * 1974-03-28 1975-11-04 Bell Telephone Labor Inc Decoding circuit for variable length codes
US4075622A (en) * 1975-01-31 1978-02-21 The United States Of America As Represented By The Secretary Of The Navy Variable-to-block-with-prefix source coding technique
US4044347A (en) * 1975-05-19 1977-08-23 International Business Machines Corporation Variable-length to fixed-length conversion of minimum-redundancy codes
US4177456A (en) * 1977-02-10 1979-12-04 Hitachi, Ltd. Decoder for variable-length codes
JPS5755668A (en) * 1980-09-22 1982-04-02 Nippon Telegr & Teleph Corp <Ntt> Decoding method for run-length code
US4612532A (en) * 1984-06-19 1986-09-16 Telebyte Corportion Data compression apparatus and method
FR2600223B1 (fr) * 1986-01-13 1988-08-19 Thomson Cgr Procede de formattage et de deformattage de donnees resultant du codage d'informations numeriques a l'aide d'un code a longueur variable, et dispositif de mise en oeuvre
US4853696A (en) * 1987-04-13 1989-08-01 University Of Central Florida Code converter for data compression/decompression
US5216423A (en) * 1991-04-09 1993-06-01 University Of Central Florida Method and apparatus for multiple bit encoding and decoding of data through use of tree-based codes
JP3278297B2 (ja) * 1994-07-20 2002-04-30 富士通株式会社 データ圧縮方法及びデータ復元方法並びにデータ圧縮装置及びデータ復元装置
JP2766875B2 (ja) * 1995-04-10 1998-06-18 日本ピラー工業株式会社 軸封システム装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3560639A (en) * 1966-10-03 1971-02-02 Xerox Corp Cascade run length encoding technique
US3675211A (en) * 1970-09-08 1972-07-04 Ibm Data compaction using modified variable-length coding
US3694813A (en) * 1970-10-30 1972-09-26 Ibm Method of achieving data compaction utilizing variable-length dependent coding techniques
US3701108A (en) * 1970-10-30 1972-10-24 Ibm Code processor for variable-length dependent codes
US3716851A (en) * 1971-02-09 1973-02-13 Bell Telephone Labor Inc Self-synchronizing sequential encoding systems
US3717851A (en) * 1971-03-03 1973-02-20 Ibm Processing of compacted data
US3689899A (en) * 1971-06-07 1972-09-05 Ibm Run-length-limited variable-length coding with error propagation limitation
US3726993A (en) * 1971-12-10 1973-04-10 Xerox Corp Data compression methods and apparatus

Also Published As

Publication number Publication date
FR2206630A1 (enExample) 1974-06-07
FR2206630B1 (enExample) 1976-06-18
JPS4979648A (enExample) 1974-08-01
US3835467A (en) 1974-09-10
DE2355786A1 (de) 1974-05-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee