Variable length decoding method and device

Details Variable length decoding method and device Variable length decoding method and device

2006-06-28

2008-10-07

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C375S240020

Reexamination Certificate

active

07432835

ABSTRACT:
A variable length decoding device comprises a CPU, a variable length decoding unit, an encoded data memory, a decoded data memory, and a mass memory. The variable length decoding unit comprises a decoding table memory operable to store decoding table, a standard information storage unit operable to store standard information of encoded data, and a frequency information storage unit operable to store information on frequency of usage of each table element of the decoding table. According to the structure, the decoding table is not necessary to transfer when decoding the encoded data based on the same standard of the previously-decoded encoded data. The decoding table to be stored in the decoding table memory can be composed by table elements of higher frequency of usage, thereby decreasing occurrence of cache error.

REFERENCES:
patent: 6144322 (2000-11-01), Sato
patent: 6633608 (2003-10-01), Miller
patent: 9-185548 (1997-07-01), None

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