FR2490899A1 - Appareil de decodage pour des codes representes par un arbre de code - Google Patents

Appareil de decodage pour des codes representes par un arbre de code Download PDF

Info

Publication number
FR2490899A1
FR2490899A1 FR8117756A FR8117756A FR2490899A1 FR 2490899 A1 FR2490899 A1 FR 2490899A1 FR 8117756 A FR8117756 A FR 8117756A FR 8117756 A FR8117756 A FR 8117756A FR 2490899 A1 FR2490899 A1 FR 2490899A1
Authority
FR
France
Prior art keywords
data
decoding
bits
code
memory
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.)
Granted
Application number
FR8117756A
Other languages
English (en)
French (fr)
Other versions
FR2490899B1 (enrdf_load_stackoverflow
Inventor
Hideaki Kanayama
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 FR2490899A1 publication Critical patent/FR2490899A1/fr
Application granted granted Critical
Publication of FR2490899B1 publication Critical patent/FR2490899B1/fr
Granted 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)
FR8117756A 1980-09-22 1981-09-21 Appareil de decodage pour des codes representes par un arbre de code Granted FR2490899A1 (fr)

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
FR2490899A1 true FR2490899A1 (fr) 1982-03-26
FR2490899B1 FR2490899B1 (enrdf_load_stackoverflow) 1984-12-28

Family

ID=15067855

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8117756A Granted FR2490899A1 (fr) 1980-09-22 1981-09-21 Appareil de decodage pour des codes representes par un arbre de code

Country Status (5)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937773A (ja) * 1982-08-26 1984-03-01 Canon Inc ランレングス符号復号装置
JPS59225676A (ja) * 1983-06-06 1984-12-18 Usac Electronics Ind Co Ltd ビツト長可変符号発生回路
JPS6041883A (ja) * 1983-08-17 1985-03-05 Fujitsu Ltd 符号化デ−タの復号方式
JPS6098768A (ja) * 1983-11-04 1985-06-01 Sony Corp ランレングス符号のデコ−ド方法
JPS61139069U (enrdf_load_stackoverflow) * 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 (ja) * 1986-07-03 1994-07-27 キヤノン株式会社 情報デ−タ復元装置
JP3227292B2 (ja) * 1993-12-20 2001-11-12 キヤノン株式会社 符号化装置、符号化方法、復号化装置、復号化方法、符号化復号化装置及び符号化復号化方法
US6408102B1 (en) 1993-12-20 2002-06-18 Canon Kabushiki Kaisha Encoding/decoding device
KR0152038B1 (ko) * 1994-10-17 1998-10-15 김광호 상대 주소를 이용한 가변장 복호화 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2208664A1 (de) * 1971-02-26 1972-08-31 Ibm Verfahren zur Decodierung eines vorsatzfreien Verdichtungscodes veränderlicher Länge
US3701111A (en) * 1971-02-08 1972-10-24 Ibm Method of and apparatus for decoding variable-length codes having length-indicating prefixes
FR2206630A1 (enrdf_load_stackoverflow) * 1972-11-10 1974-06-07 Ibm
US3918047A (en) * 1974-03-28 1975-11-04 Bell Telephone Labor Inc Decoding circuit for variable length codes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883847A (en) * 1974-03-28 1975-05-13 Bell Telephone Labor Inc Uniform decoding of minimum-redundancy codes

Patent Citations (4)

* 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
DE2208664A1 (de) * 1971-02-26 1972-08-31 Ibm Verfahren zur Decodierung eines vorsatzfreien Verdichtungscodes veränderlicher Länge
FR2206630A1 (enrdf_load_stackoverflow) * 1972-11-10 1974-06-07 Ibm
US3918047A (en) * 1974-03-28 1975-11-04 Bell Telephone Labor Inc Decoding circuit for variable length codes

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 15, no. 4, septembre 1972, pages 1109-1110, New York, US *
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 16, no. 11, avril 1974, pages 3678-3681, New York, US *
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 19, no. 5, octobre 1976, pages 1892-1895, New York, US *
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 3, août 1980, pages 1211-1216, New York, US *

Also Published As

Publication number Publication date
DE3137704A1 (de) 1982-04-15
JPS6338153B2 (enrdf_load_stackoverflow) 1988-07-28
DE3137704C2 (de) 1986-01-09
NL190094C (nl) 1993-10-18
NL190094B (nl) 1993-05-17
FR2490899B1 (enrdf_load_stackoverflow) 1984-12-28
GB2084366A (en) 1982-04-07
NL8104352A (nl) 1982-04-16
JPS5755668A (en) 1982-04-02
GB2084366B (en) 1985-07-03

Similar Documents

Publication Publication Date Title
FR2645666A1 (fr) Procede pour transferer des donnees par salves dans un microprocesseur
FR2490899A1 (fr) Appareil de decodage pour des codes representes par un arbre de code
FR2533091A1 (fr) Systeme de detection et de correction d'erreurs de transmission d'un message binaire utilisant un code cyclique detecteur et correcteur d'erreurs de type reed-solomon entrelace
FR2725330A1 (fr) Procede et appareil de codage et de decodage de donnees
BE897586A (fr) Circuit parallele de controle de redondance cyclique
FR2554995A1 (fr) Procede de compression d'une succession d'informations numeriques et dispositif mettant en oeuvre ce procede
EP0298546B1 (fr) Système de transmission de séries d'échantillons numériques codés par des mots binaires à longueurs variables
FR2486290A1 (fr) Dispositif de transmission rapide de donnees comportant un circuit de commande a acces direct a la memoire
EP0682828B1 (fr) Procede d'entrelacement et de desentrelacement en bloc et dispositif de mise en oeuvre
WO2002007324A1 (fr) Dispositif d'emission/reception de donnees numeriques capable de traiter des debits differents, en particulier dans un environnement vdsl
FR2553954A1 (fr) Systeme de reception d'informations asynchrones transmises en mode synchrone
FR2541836A1 (fr) Appareil de decodage de donnees et dispositif de traitement de donnees comprimees
FR2720528A1 (fr) Décodeur de correction d'erreur.
CA2045882C (fr) Circuit de decodage de codes convolutionnels pour l'execution de l'etape de stockage et d'exploration inverse des chemins survivants d'un algorithme de viterbi
EP0772361B1 (fr) Procédé permettant la mise en cascade de modules d'accès conditionnel détachables, circuit d'insertion d'une séquence prédéfinie et circuit de détection de ladite séquence pour la mise en oeuvre du procédé
FR2630277A1 (fr) Procede de codage et de decodage d'informations, par blocs, et dispositifs de codage et de decodage, pour la mise en oeuvre de ce procede
FR2611100A1 (fr) Appareil de decodage de code numerique
EP0083998B1 (fr) Générateur d'octets chiffrants ou déchiffrants
FR2524740A1 (fr) Procede de compression d'une image numerisee
EP0376384A1 (fr) Dispositif de transmission d'informations utilisant un codage statistique, partie émission et partie réception convenant pour un tel dispositif
FR2575882A1 (fr) Procede de diffusion sure de messages dans un reseau en anneau et dispositif permettant la mise en oeuvre du procede
EP0438340B1 (fr) Procédé et appareil de compression de données
EP0165147B1 (fr) Codeur-décodeur de codes de blocs, paramètrable
EP0668557B1 (fr) Circuit et procédé de réorganisation de données
FR2612025A1 (fr) Dispositif de decodage de signaux codes en duobinaire

Legal Events

Date Code Title Description
TP Transmission of property
CA Change of address