Image decoding apparatus and method

Details Image decoding apparatus and method Image decoding apparatus and method

2008-09-16

2011-12-06

Dang, Duy M (Department: 2624)

Image analysis

Image compression or coding

Including details of decompression

C382S246000

Reexamination Certificate

active

08073270

ABSTRACT:
An image decoding apparatus is provided, including a parser and an AC decoder. The parser is provided for parsing a bit stream to acquire a first unit. The first unit includes a DC code and a plurality of AC codes respectively corresponding to a DC coefficient and AC coefficients for a first block of the image. The AC decoder generates a plurality of first AC coefficients for the first block by decoding the plurality of AC codes of the first unit, and determines whether the number of the plurality of first AC coefficients exceeds a predetermined parameter. If so, the AC decoder obtains a second unit of the bit stream corresponding to a second block following the first block by performing an AC bypassing process on the first unit. Each AC code comprises a Huffman code and a VLI code.

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patent: 7050656 (2006-05-01), Bhaskaran et al.
patent: RE39925 (2007-11-01), Mitchell et al.

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