GB2084366B - Decoding apparatus for a variable length code - Google Patents

Decoding apparatus for a variable length code

Info

Publication number
GB2084366B
GB2084366B GB8127757A GB8127757A GB2084366B GB 2084366 B GB2084366 B GB 2084366B GB 8127757 A GB8127757 A GB 8127757A GB 8127757 A GB8127757 A GB 8127757A GB 2084366 B GB2084366 B GB 2084366B
Authority
GB
United Kingdom
Prior art keywords
decoding apparatus
variable length
length code
code
decoding
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
GB8127757A
Other versions
GB2084366A (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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of GB2084366A publication Critical patent/GB2084366A/en
Application granted granted Critical
Publication of GB2084366B publication Critical patent/GB2084366B/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
    • 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
    • H03M7/4025—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code constant length to or from Morse code conversion

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
GB8127757A 1980-09-22 1981-09-15 Decoding apparatus for a variable length code Expired GB2084366B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13186280A JPS5755668A (en) 1980-09-22 1980-09-22 Decoding method for run-length code

Publications (2)

Publication Number Publication Date
GB2084366A GB2084366A (en) 1982-04-07
GB2084366B true GB2084366B (en) 1985-07-03

Family

ID=15067855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8127757A Expired GB2084366B (en) 1980-09-22 1981-09-15 Decoding apparatus for a variable length code

Country Status (5)

Country Link
JP (1) JPS5755668A (en)
DE (1) DE3137704C2 (en)
FR (1) FR2490899A1 (en)
GB (1) GB2084366B (en)
NL (1) NL190094C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937773A (en) * 1982-08-26 1984-03-01 Canon Inc Run-length coding and decoding device
JPS59225676A (en) * 1983-06-06 1984-12-18 Usac Electronics Ind Co Ltd Generating circuit of bit length variable code
JPS6041883A (en) * 1983-08-17 1985-03-05 Fujitsu Ltd Decoding system of coded data
JPS6098768A (en) * 1983-11-04 1985-06-01 Sony Corp Decoding method of run length code
JPS61139069U (en) * 1985-02-18 1986-08-28
GB2178577B (en) * 1985-07-27 1989-01-11 Plessey Co Plc A signal converter
US4800441A (en) * 1986-02-28 1989-01-24 Kabushiki Kaisha Toshiba Binary data compression and expansion processing apparatus
JPH0656958B2 (en) * 1986-07-03 1994-07-27 キヤノン株式会社 Information data restoration device
US6408102B1 (en) 1993-12-20 2002-06-18 Canon Kabushiki Kaisha Encoding/decoding device
JP3227292B2 (en) * 1993-12-20 2001-11-12 キヤノン株式会社 Encoding device, encoding method, decoding device, decoding method, encoding / decoding device, and encoding / decoding method
KR0152038B1 (en) * 1994-10-17 1998-10-15 김광호 Variable length decode apparatus using partner address

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701111A (en) * 1971-02-08 1972-10-24 Ibm Method of and apparatus for decoding variable-length codes having length-indicating prefixes
GB1332631A (en) * 1971-02-26 1973-10-03 Ibm Data processing system
US3835467A (en) * 1972-11-10 1974-09-10 Ibm Minimal redundancy decoding method and means
US3883847A (en) * 1974-03-28 1975-05-13 Bell Telephone Labor Inc Uniform decoding of minimum-redundancy codes
US3918047A (en) * 1974-03-28 1975-11-04 Bell Telephone Labor Inc Decoding circuit for variable length codes

Also Published As

Publication number Publication date
NL190094B (en) 1993-05-17
JPS6338153B2 (en) 1988-07-28
DE3137704A1 (en) 1982-04-15
FR2490899A1 (en) 1982-03-26
DE3137704C2 (en) 1986-01-09
GB2084366A (en) 1982-04-07
NL8104352A (en) 1982-04-16
JPS5755668A (en) 1982-04-02
FR2490899B1 (en) 1984-12-28
NL190094C (en) 1993-10-18

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20010914