Method and apparatus for transmission and reception of...

H - Electricity – 04 – H

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H04H 1/00 (2006.01)

Patent

CA 2383408

A method for transmission of compressed data for a digital audio broadcasting system comprises the steps of producing digital information representative of an audio signal; estimating the number of bits to be allocated to the digital information in a modem frame; encoding the digital information within the estimated number of bits to produce encoded data; removing selected bits from the encoded data; adding bits corresponding to digital messages to the encoded information to form a composite modem frame; formatting the composite modem frame bits to produce formatted composite modem frame bits; and transmitting the formatted composite modem frame bits. The invention also encompasses transmitters that perform the method.

Cette invention se rapporte à un procédé de transmission de données comprimées pour un système d'audiodiffusion numérique, qui consiste à produire des informations numériques représentant un signal audio; à estimer le nombre de bits à attribuer à ces informations numériques dans une trame modem; à coder ces informations numériques dans le nombre estimé de bits, en vue de produire des données codées; à retirer les bits ainsi sélectionnées des données codées; à ajouter des bits correspondants à des messages numériques aux informations codées, afin de former une trame modem composite; à formater les bits de la trame modem composite, en vue de produire des bits de trame modem composite formatés; et à transmettre ces bits formatés de la trame modem composite. Cette invention concerne également des émetteurs permettant de réaliser ce procédé.

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