ES2165370T3 - Metodo para obtener una matriz decodificadora multicanal. - Google Patents

Metodo para obtener una matriz decodificadora multicanal.

Info

Publication number
ES2165370T3
ES2165370T3 ES94109238T ES94109238T ES2165370T3 ES 2165370 T3 ES2165370 T3 ES 2165370T3 ES 94109238 T ES94109238 T ES 94109238T ES 94109238 T ES94109238 T ES 94109238T ES 2165370 T3 ES2165370 T3 ES 2165370T3
Authority
ES
Spain
Prior art keywords
decoding
decoder
matrix
coding matrix
decoding matrix
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
ES94109238T
Other languages
English (en)
Inventor
Jens Spille
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Application granted granted Critical
Publication of ES2165370T3 publication Critical patent/ES2165370T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
    • H04N5/605—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals according to the NICAM system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other

Abstract

EN EL AUDIO MULTICANAL MPEG EL DECODIFICADOR REQUIERE UNA MATRIZ DECODIFICADORA RESPECTIVA PARA CALCULAR DESDE LOS DATOS DE AUDIO CODIFICADOS LOS DIFERENTES CANALES DE SALIDA. ALGUNA INFORMACION ES TRANSMITIDA QUE INDICA LOS PARAMETROS BASICOS DEL SISTEMA MULTICANAL. ESTA INFORMACION PUEDE SER USADA PARA DIRIGIR LA MATRIZ DECODIFICADORA REQUERIDA CORRIENTEMENTE QUE ES ALMACENADA PREVIAMENTE EN UNA MEMORIA DECODIFICADORA. PORQUE EL ALMACENAJE DE MAS QUE 1000 DE TALES MATRICES ES REQUERIDO PERMITIR AL DECODIFICADOR DESCODIFICAR TODAS LAS CONFIGURACIONES DE CANALES POSIBLES TAL COMO UN DECODIFICADOR SERA MUY COSTOSO. EN VEZ DE DIRIGIR LA MATRIZ DECODIFICADORA REQUERIDA ALMACENADA EN UNA MEMORIA DECODIFICADORA, AL PRINCIPIO LA MATRIZ CODIFICADORA CORRIENTE PUEDE SER RECONSTRUIDO EN EL DECODIFICADOR USANDO LA INFORMACION TRANSMITIDA RELACIONADA. ENTONCES, LA MATRIZ CODIFICADORA REQUERIDA ES COMPUTADA DESDE LA MATRIZ CODIFICADORA RECONSTRUIDA. ESTO ES POSIBLE DEBIDO AL HECHO QUE EL TIEMPO DE COMPUTACION NECESARIO ES SIGNIFICANTE INFERIOR QUE EL TIEMPO DE COMPUTACION REQUERIDO PARA UN FILTRO DE SEÑAL DE AUDIO DECODIFICADOR.
ES94109238T 1993-06-22 1994-06-16 Metodo para obtener una matriz decodificadora multicanal. Expired - Lifetime ES2165370T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93401609 1993-06-22

Publications (1)

Publication Number Publication Date
ES2165370T3 true ES2165370T3 (es) 2002-03-16

Family

ID=8214729

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94109238T Expired - Lifetime ES2165370T3 (es) 1993-06-22 1994-06-16 Metodo para obtener una matriz decodificadora multicanal.

Country Status (5)

Country Link
US (1) US5524054A (es)
JP (1) JP3563109B2 (es)
DE (1) DE69428939T2 (es)
ES (1) ES2165370T3 (es)
SG (1) SG43996A1 (es)

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Also Published As

Publication number Publication date
JPH07143596A (ja) 1995-06-02
DE69428939D1 (de) 2001-12-13
US5524054A (en) 1996-06-04
JP3563109B2 (ja) 2004-09-08
DE69428939T2 (de) 2002-04-04
SG43996A1 (en) 1997-11-14

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