Byte aligned data compression

Details Byte aligned data compression Byte aligned data compression

1993-10-25

1994-11-08

Logan, Sharon D.

Coded data generation or conversion

Digital code to digital code converters

Byte length changed

341 63, 341 50, H03M 700, H03M 746

Patent

active

053630980

ABSTRACT:
In a system for compressing, decompressing, and logically manipulating arbitrary bit-maps, the bit-map is aligned along byte boundaries. Each aligned byte is classified as a gap byte if all of the bits of the byte store the same logical value, otherwise the byte is classified as a non-gap byte. Adjacent bytes of the same class are grouped. Groups of gap bytes are encoded into an atomic sequence of bytes as a count of the number of bits included in the grouped gap bytes. Map bytes are duplicated in the atomic sequence and also associated with a count thereof.

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