Encoding/decoding device

Details Encoding/decoding device Encoding/decoding device

1998-03-18

2000-12-05

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

H03M 740

Patent

active

061573272

ABSTRACT:
To order to provide an encoding/decoding device capable of reducing the memory area required and speeding up encoding processing, an encoding/decoding device according to the invention includes a data encoder for reading a size representing a code length of each code word stored in memory, and an offset representing the numerical difference between a base, representing a minimum or maximum value in code words having the code length represented by this size, and the code word, using an address designated by a run length and a group number, outputting a minimum or maximum value in a code word having a code length designated by the size with a multiplexer, adding the base and the offset, and outputting a code of a code word corresponding to the run length and group number.

REFERENCES:
patent: 5714949 (1998-02-01), Watabe
patent: 5801650 (1998-09-01), Nakayama
patent: 5841381 (1998-11-01), Nakayama
patent: 5912742 (1999-06-01), Matoba et al.

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