Method and apparatus for decoding JPEG symbols

Details Method and apparatus for decoding JPEG symbols Method and apparatus for decoding JPEG symbols

1998-05-11

2000-09-19

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

341 65, H03M 740

Patent

active

061219053

ABSTRACT:
A method and apparatus for decoding JPEG Huffman symbols is described. A content addressable memory module stores bit patterns representing Huffman symbols that must be decoded in a single decoding cycle. A compare-add module stores bit patterns representing Huffman symbols that can be decoded in following cycles. The content addressable memory module and the compare-add module each compare a Huffman symbol with their stored bit patterns and generate a corresponding bit pattern when a match is found. The method takes advantage of the high speed possible with a content addressable memory and the small size of the compare-add module.

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Patent Cooperation Treaty, International Search Report, International Application No. PCT/US99/10170, mailed on Dec. 21, 1999, 6 pages.

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