Variable-length code encoding and segmenting apparatus having a

Details Variable-length code encoding and segmenting apparatus having a Variable-length code encoding and segmenting apparatus having a

1995-11-20

1998-05-19

Young, Brian K.

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

H03M 740

Patent

active

057541280

ABSTRACT:
An apparatus carries out encoding variable length codes (VLCs) represented by variable-length codewords and their lengths, and segmenting variable-length codewords of the VLCs into N-bit segments for the transmission thereof, and, if the length of the last segment of the N-bit segments is shorter than N, inserting bits having the value zero between the last bit of the last segment and a start code with a start code prefix followed by a start code value identifying the type of the start code in order to represent the start of a code sequence such that the first bit of the start code is the most significant bit of a byte. The apparatus comprises a byte alignment unit that operates in response to a byte alignment signal. The byte alignment unit produces a pseudo codeword representative of a set of parallel bits with the value zero having a width equal to the maximum bit length of the variable-length codewords instead of the variable-length codeword, and a pseudo length representative of the number of bits contained between the last bit of the last segment and the start code instead of the length of the variable-length codeword.

REFERENCES:
patent: 4219874 (1980-08-01), Gusev et al.

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