Coded data generation or conversion – Digital code to digital code converters – To or from variable length codes
Patent
1993-10-12
1996-01-30
Williams, Howard L.
Coded data generation or conversion
Digital code to digital code converters
To or from variable length codes
H03M 740
Patent
active
054883660
ABSTRACT:
The present invention comprises an apparatus for decoding an ordered sequence of incoming binary bit-stream in serial containing a plurality of variable length codewords with a maximum codeword length of M. The decoding apparatus comprises a serial to parallel converting and shifting means for receiving the incoming bit stream, and for receiving a shift-count for shifting and converting the shift-count number of bits for adding to a parallel data record. The decoding apparatus further comprises a dictionary means including at least two dictionary tables for listing a plurality of standard codewords wherein each of the dictionary tables having a bit-length less than M. The decoding apparatus further comprises a decoding means for decoding the parallel data record by utilizing the dictionary means and to generate the shift-count as an input to the serial to parallel converting and shifting means.
REFERENCES:
patent: 5138316 (1992-08-01), Konishi
patent: 5229863 (1993-07-01), Kao et al.
patent: 5233348 (1993-08-01), Pollmann et al.
patent: 5325092 (1994-06-01), Allen et al.
Industrial Technology Research Institute
Lin Bo-In
Williams Howard L.
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