US Patent 5,155,484

Number:	5,155,484
Title:	Fast data compressor with direct lookup table indexing into history buffer
Filed:	13-Sep-1991
Granted:	13-Oct-1992
Inventor:	Chambers, IV, Lloyd L., Menlo Park, California
Assignee:	Salient Software, Inc., Palo Alto, California (02)

Comment by FAQ:Uses a 64K hash table indexed by the first two characters of the input string. Includes several claims on the LZ77 file format (literal or pair offset,length).