Variable-length code decoder

Details Variable-length code decoder Variable-length code decoder

1996-09-23

1998-10-20

Gaffin, Jeffrey A.

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

341 65, H03M 740

Patent

active

058253149

ABSTRACT:
The present invention provides a variable-length code decoder for inputting a code data bit string having a predetermined number of code data bits in every decoding cycle and decoding it, which comprises storing means for storing a decoded symbol and a node in a code tree in the next decoding cycle corresponding to each combination of a value of the code data bit string and a node in the code tree, reading means for reading the decoded symbol and the node in the code tree in the next decoding cycle from the storing means in accordance with the code data bit string inputted in a current decoding cycle and the node in the code tree in the current decoding cycle, outputting means for outputting the decoded symbol read by the reading means, and providing means for providing the node in the code tree in the next decoding cycle read by the reading means to the reading means.

REFERENCES:
patent: 5126738 (1992-06-01), Sasaki
patent: 5220325 (1993-06-01), Ackland et al.
patent: 5428356 (1995-06-01), Ozaki
patent: 5621405 (1997-04-01), Park et al.

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