Methods and systems for compressing and decompressing data

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United States of America Patent

PATENT NO 8698657
APP PUB NO 20140070966A1
SERIAL NO

13608415

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Abstract

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The present invention relates to data compression using compression dictionary. A compression method according to the invention comprises obtaining an initial compression dictionary and a separate secondary dictionary SD; determining at least one subpart of the secondary dictionary that correlates with a block of data DB to compress; updating the initial compression dictionary by inserting the determined at least one subpart therein, to obtain an updated compression dictionary used for compressing the block of data; and compressing the block of data using one or more references to entries of the obtained updated compression dictionary.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bellessort, Romain Rennes, FR 39 464
Fablet, Youenn La Dominelais, FR 49 620
Ruellan, Hervé Rennes, FR 52 237

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