Real time algorithms and architectures for coding images compres

Details Real time algorithms and architectures for coding images compres Real time algorithms and architectures for coding images compres

1998-07-02

2000-09-26

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

To or from bit count codes

341 67, 382240, H03M 730, H03M 746

Patent

active

061248118

ABSTRACT:
What is disclosed is a method that allows a fixed length codeword and flag to serve as a structure for encoding large run lengths, a sequence of such structures representing the number of zeroes between two non-zero values in a data set to be encoded. Also disclosed is an adaptive encoding technique that determines an encoding method suitable with the entropy characteristics of the data to be encoded. An architecture is disclosed which allows the size of the fixed length to be varied, if needed. This architecture includes a plurality of logic networks coupled to a single counter, each of which may be enabled depending on the desired codeword size.

REFERENCES:
patent: 4988998 (1991-01-01), O'Brien
patent: 5412429 (1995-05-01), Glover
patent: 5488486 (1996-01-01), Shimizu
patent: 5751231 (1998-05-01), Iverson
patent: 5764167 (1998-06-01), Adams et al.
patent: 5819215 (1998-10-01), Dobson et al.
patent: 5940540 (1999-08-01), Cornelissen
patent: 5966465 (1999-10-01), Keith et al.

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