US Patent 3,914,586

Number:	3,914,586
Title:	Data compression method and apparatus
Filed:	25-Oct-1973
Granted:	21-Oct-1975
Assignee:	General Motors Corporation, Detroit MI
Inventor:	Duane E. McIntosh, Santa Ynez CA

Comment by FAQ:Data compression apparatus is disclosed is operable in either a bit pair coding mode of a word coding mode depending on the degree of redundancy of the data to be encoded.