Variable-length code decoding apparatus and method

Details Variable-length code decoding apparatus and method Variable-length code decoding apparatus and method

2007-01-09

2007-01-09

Williams, Howard L. (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C382S246000, C375S240230

Reexamination Certificate

active

11284010

ABSTRACT:
There are provided a variable-length code decoding apparatus and method which can perform high-speed decoding processing without decreasing an image size and frame rate. A variable-length code decoding apparatus of this invention decodes a variable-length code containing a prefix and a suffix. This apparatus includes a prefix decoding unit which decodes the prefix of an input variable-length code and outputs a symbol and prefix length corresponding to the prefix, a suffix shifter unit which supplies the suffix on the basis of the prefix length output from the prefix decoding unit, and a symbol decoding unit which decodes a symbol corresponding to a variable-length code on the basis of the symbol corresponding to the prefix which is output from the prefix decoding unit, the suffix supplied by the suffix shifter unit, and a suffix length acquired in advance.

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patent: 2004-134896 (2004-04-01), None

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