Digital image compression and decompression

The apparatus (300) comprises a DWT engine (308), a code block manager (310) and entropy encoder (314). The code block manager (310) comprises at least one controller (412, 414, and 416), which losslessly compress the transform coefficients and stores them in a code block store (418) for buffering....

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Bibliographic Details
Main Authors CHEN YU-LING (LINDA), ANDREW JAMES PHILIP
Format Patent
LanguageEnglish
Published 04.07.2002
Edition7
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:The apparatus (300) comprises a DWT engine (308), a code block manager (310) and entropy encoder (314). The code block manager (310) comprises at least one controller (412, 414, and 416), which losslessly compress the transform coefficients and stores them in a code block store (418) for buffering. The entropy coder (314) comprises at least one entropy encoder (422, 424, 426), each comprising a decoder (1206, 1204,) for decoding the losslessly compressed transformed coefficients prior to entropy encoding (1202).
Bibliography:Application Number: US20010003098