ES2088918T3 - Procedimiento digital de codificacion. - Google Patents

Procedimiento digital de codificacion.

Info

Publication number
ES2088918T3
ES2088918T3 ES90107082T ES90107082T ES2088918T3 ES 2088918 T3 ES2088918 T3 ES 2088918T3 ES 90107082 T ES90107082 T ES 90107082T ES 90107082 T ES90107082 T ES 90107082T ES 2088918 T3 ES2088918 T3 ES 2088918T3
Authority
ES
Spain
Prior art keywords
series
message
code
values
procedure
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 - Lifetime
Application number
ES90107082T
Other languages
English (en)
Other versions
ES2088918T5 (es
Inventor
Bernhard Grill
Bernd Kurten
Ernst Eberlein
Thomas Sporer
Karl-Heinz Brandenburg
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6378865&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2088918(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of ES2088918T3 publication Critical patent/ES2088918T3/es
Application granted granted Critical
Publication of ES2088918T5 publication Critical patent/ES2088918T5/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H03M7/3053—Block-companding PCM systems
    • 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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Steroid Compounds (AREA)
  • Hall/Mr Elements (AREA)
  • Optical Head (AREA)

Abstract

SE DESCRIBE UN PROCEDIMIENTO DIGITAL CODIFICADO PARA LA TRANSMISION Y/O RECEPCION DE SEÑALES ACUSTICAS Y ESPECIALMENTE PARA SEÑALES MUSICALES. EN ESTE PROCEDIMIENTO LOS VALORES DE SINTONIZACION DE LA SEÑAL ACUSTICA SON TRANSFORMADOS EN UNA SEGUNDA SERIE DE VALORES DE SINTONIZACION POR MEDIO DE UN TRANSFORMADOR O UN FILTRO. ESTA SEGUNDA SERIE DE VALORES REPRODUCE EL ESPECTRO DE LA SEÑAL ACUSTICA Y LO CUANTIFICA CON EXACTITUD VARIABLE. UN CODIFICADOR LE DA A ESTE ESPECTRO UNA CODIFICACION OPTIMA. EN ESTA REPRODUCCION TIENE LUGAR UNA DECODIFICACION O UNA TRANSFORMACION. EL PROCEDIMIENTO DIGITAL INVENTADO SE CARACTERIZA POR QUE SE UTILIZA UN CODIFICADOR YA CONOCIDO. CON ELLO SE CONSIGUE QUE HAYA UN CORRELATO ENTRE LAS POSIBILIDADES DE APARICION DEL COEFICIENTE ESPECTRAL Y LA LONGITUD DEL CODIGO. DE ESTA MANERA EL MENSAJE DEL CODIGO SERA TANTO MAS CORTO CUANTO MAS FRECUENTE SEA LA APARICION DEL COEFICIENTE ESPECTRAL. IGUALMENTE PARA LA REDUCCION DEL TAMAÑO DE LA TABLA DE CODIFICACION, A VARIOS ELEMENTOS DE LA SERIE O A TODO UN CONJUNTO DE VALORES LE CORRESPONDERA UN MENSAJE CODIFICADO O UN CODIGO ADICIONAL. ASI SE CONSIGUE QUE UNA SERIE DE CODIGOS DE LONGITUD VARIABLE PUEDAN SER LOCALIZADOS EN UN CUADRO Y QUE LA SERIE RESTANTE DE MENSAJES SE REPARTA POR LAS PARTES RESTANTES DEL CODIFICADOR. CON ELLO SE CONSIGUE QUE UN MENSAJE DEL CODIGO PUEDA SER FACILMENTE ENCONTRADO, AUNQUE NO HAYA UNA DECODIFICACION COMPLETA O ALLA UNA RECEPCION ERRONEA DEL PRINCIPIO DEL MENSAJE.
ES90107082T 1989-04-17 1990-04-12 Metodo de codificacion digital. Expired - Lifetime ES2088918T5 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3912605A DE3912605B4 (de) 1989-04-17 1989-04-17 Digitales Codierverfahren

Publications (2)

Publication Number Publication Date
ES2088918T3 true ES2088918T3 (es) 1996-10-01
ES2088918T5 ES2088918T5 (es) 2004-01-01

Family

ID=6378865

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90107082T Expired - Lifetime ES2088918T5 (es) 1989-04-17 1990-04-12 Metodo de codificacion digital.

Country Status (13)

Country Link
US (1) US5579430A (es)
EP (3) EP0612156B1 (es)
JP (1) JP2739377B2 (es)
KR (1) KR0136572B1 (es)
AT (3) ATE203359T1 (es)
DE (7) DE3943879B4 (es)
DK (1) DK0393526T4 (es)
ES (1) ES2088918T5 (es)
FI (1) FI105731B (es)
GR (1) GR3021283T3 (es)
NO (1) NO307767B1 (es)
RU (1) RU2141166C1 (es)
WO (1) WO1990013182A2 (es)

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RU2141166C1 (ru) 1999-11-10
EP0393526A2 (de) 1990-10-24
DK0393526T4 (da) 2003-12-22
ATE144090T1 (de) 1996-10-15
WO1990013182A3 (de) 1991-01-10
JPH04504936A (ja) 1992-08-27
EP0393526A3 (de) 1991-01-09
DE3912605A1 (de) 1990-10-25
ATE140571T1 (de) 1996-08-15
ATE203359T1 (de) 2001-08-15
NO913931D0 (no) 1991-10-07
DK0393526T3 (da) 1996-11-18
DE3943880B4 (de) 2008-07-17
KR920702098A (ko) 1992-08-12
NO307767B1 (no) 2000-05-22
EP0393526B1 (de) 1996-07-17
JP2739377B2 (ja) 1998-04-15
NO913931L (no) 1991-10-07
GR3021283T3 (en) 1997-01-31
DE59010538D1 (de) 1996-11-14
US5579430A (en) 1996-11-26
KR0136572B1 (en) 1998-05-15
EP0717503A2 (de) 1996-06-19
FI105731B (fi) 2000-09-29
EP0717503B1 (de) 2001-07-18
DE3943881B4 (de) 2008-07-17
DE59010923D1 (de) 2001-08-23
WO1990013182A2 (de) 1990-11-01
DE59010419D1 (de) 1996-08-22
EP0393526B2 (de) 2003-08-27
EP0612156B1 (de) 1996-10-09
FI914886A0 (fi) 1991-10-16
EP0717503A3 (es) 1996-07-17
DE3943879B4 (de) 2008-07-17
EP0612156A3 (de) 1994-09-07
EP0612156A2 (de) 1994-08-24
ES2088918T5 (es) 2004-01-01
DE3912605B4 (de) 2008-09-04

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