Inventor
COOPER ALBERT B
US30 patents
Patents
30 patentsUS6570511B1May 27, 2003
Data compression method and apparatus implemented with limited length character tables and compact string code utilization
UNISYS CORP99 citations98
US6121901ASep 19, 2000
Data compression and decompression system with immediate dictionary updating interleaved with string search
UNISYS CORP136 citations97
US6614368B1Sep 2, 2003
Data compression method and apparatus utilizing cascaded character tables
UNISYS CORP67 citations96
US5861827AJan 19, 1999
Data compression and decompression system with immediate dictionary updating interleaved with string search
UNISYS CORP60 citations95
US5893102AApr 6, 1999
Textual database management, storage and retrieval system utilizing word-oriented, dictionary-based data compression/decompression
UNISYS CORP82 citations94
US6400286B1Jun 4, 2002
Data compression method and apparatus implemented with limited length character tables
UNISYS CORP35 citations92
US6359548B1Mar 19, 2002
Data compression and decompression method and apparatus with embedded filtering of infrequently encountered strings
UNISYS CORP20 citations92
US6307488B1Oct 23, 2001
LZW data compression and decompression apparatus and method using grouped data characters to reduce dictionary accesses
UNISYS CORP34 citations92
US6188333B1Feb 13, 2001
LZW data compression apparatus and method using look-ahead mathematical run processing
UNISYS CORP19 citations92
US6169499B1Jan 2, 2001
LZW data compression/decompression apparatus and method with embedded run-length encoding/decoding
UNISYS CORP28 citations92
US5642112AJun 24, 1997
Method and apparatus for performing LZW data compression utilizing an associative memory
UNISYS CORP18 citations92
US5535264AJul 9, 1996
Prompt issuing protocol for an intercept voice messaging system
UNISYS CORP28 citations87
US6426711B1Jul 30, 2002
Character table implemented data compression method and apparatus
UNISYS CORP16 citations84
US6392568B1May 21, 2002
Data compression and decompression method and apparatus with embedded filtering of dynamically variable infrequently encountered strings
UNISYS CORP19 citations84
US6650259B1Nov 18, 2003
Character table implemented data decompression method and apparatus
UNISYS CORP9 citations74
US6628211B1Sep 30, 2003
Prefix table implemented data compression method and apparatus
UNISYS CORP8 citations74
US6466144B1Oct 15, 2002
Data decompressor for use with a data compressor implemented with limited length character tables and compact string codes
UNISYS CORP12 citations74
US6137428AOct 24, 2000
Data compression method and apparatus with embedded run-length encoding using mathematical run processing
UNISYS CORP7 citations74
US5838264ANov 17, 1998
Method and apparatus for performing LZW data compression utilizing an associative memory
UNISYS CORP16 citations74
US6724330B1Apr 20, 2004
Prefix table implemented data compression method and apparatus utilizing string code reassignment
UNISYS CORP5 citations63
US6674374B1Jan 6, 2004
Data compressor utilizing switched input coincidence elements
UNISYS CORP2 citations63
US6653949B1Nov 25, 2003
Data compression apparatus and method utilizing tandem coupled matrices
UNISYS CORP2 citations63
US6608570B1Aug 19, 2003
Matrix implemented data compression apparatus and method
UNISYS CORP2 citations63
US6172624B1Jan 9, 2001
LZW data-compression apparatus and method using look-ahead mathematical run processing
UNISYS CORP3 citations63
US6268811B1Jul 31, 2001
Data compression method and apparatus with embedded run-length encoding
UNISYS CORP1 citations52
US6166665ADec 26, 2000
Data compression method and apparatus with embedded run-length encoding
UNISYS CORP0 citations52
US6812866B1Nov 2, 2004
Data decompressor utilizing sequentially coupled logic elements
UNISYS CORP0 citations42
US6788226B1Sep 7, 2004
Data compressor with string code reassignment utilizing switched input coincidence elements
UNISYS CORP0 citations42
US6756923B1Jun 29, 2004
Data compressor utilizing switched input coincidence elements arranged in virtual levels
UNISYS CORP0 citations42
US6653950B2Nov 25, 2003
Data compression method and apparatus utilizing cascaded subdictionaries
UNISYS CORP0 citations42