Vocabulary memory allocation for adaptive data compression...

H - Electricity – 04 – J

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H04J 3/16 (2006.01) H03M 7/42 (2006.01)

Patent

CA 2108460

A method of and apparatus for allocating memory for storage of vocabularies used in adaptive data compression of a frame-multiplexed data stream of a data communications network. More specifically, a memory (fig. 1, Va; fig.3, 40) of a data compression encoder of the network is partitioned into a plurality of sections for the temporary storage of a corresponding plurality of data compression vocabularies. A memory section of the plurality is assigned to a current frame of the frame-multiplexed data stream based on information of the current frame for storage of a vocabulary created adaptively from the current frame.

L'invention est constituée par une méthode et un appareil d'affectation d'espaces de stockage des vocabulaires utilisés dans la compression adaptative des chaînes de données multiplexées en blocs dans un réseau de transmission de données. Plus exactement, la mémoire (fig. 1, Va; fig.3, 40) d'un codeur de compression de données du réseau est segmentée en une pluralité de sections pour le stockage temporaire d'une pluralité correspondante de vocabulaires de compression de données. L'un des segments de la pluralité de segments de la mémoire est affecté à l'un des blocs du moment dans la chaîne de données multiplexée par blocs d'après l'information contenue dans ce bloc pour stocker un vocabulaire créé adaptativement à partir de lui.

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