Decoding method and encoding method

Details Decoding method and encoding method Decoding method and encoding method

2007-04-24

2007-04-24

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C341S065000

Reexamination Certificate

active

11293154

ABSTRACT:
A decoding method according to the present invention is a method of decoding a variable length code to a Run symbol and a Level symbol. The Run symbol indicates the number of consecutive coefficients each having a value of zero. The Level symbol indicates a value of a non-zero coefficient following the Run symbol. The decoding method includes: decoding a variable length code to a code number; determining whether the code number obtained in the decoding belongs to a first range or a predetermined range; decoding the code number to a Run symbol and a Level symbol by referring to the table, when it is determined that the code number belongs to the first range; and decoding the code number to a Level symbol and then decoding a variable length code following the decoded variable length code to a Run symbol, without referring to the table, when it is determined that the code number belongs to the predetermined range.

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U.S. Appl. No. 11/230,516, to Bi et al., which was filed Sep. 21, 2005.

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