Inventor
PENNEBAKER WILLIAM B
US28 patents
⚠️ This page may combine multiple inventors who share the name “PENNEBAKER WILLIAM B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
27 patentsUS5045852ASep 3, 1991
Dynamic model selection during data compression
IBM181 citations99
US4891643AJan 2, 1990
Arithmetic coding data compression/de-compression by selectively employed, diverse arithmetic coding encoders and decoders
IBM173 citations99
US4725885AFeb 16, 1988
Adaptive graylevel image compression system
IBM162 citations99
US4905297AFeb 27, 1990
Arithmetic coding encoder and decoder system
IBM162 citations98
US5157488AOct 20, 1992
Adaptive quantization within the jpeg sequential mode
IBM79 citations96
US5099440AMar 24, 1992
Probability adaptation for arithmetic coders
IBM99 citations96
US4935882AJun 19, 1990
Probability adaptation for arithmetic coders
IBM111 citations96
US4933883AJun 12, 1990
Probability adaptation for arithmetic coders
IBM89 citations96
US4885786ADec 5, 1989
Method for enlarging an image stored in run representation form
IBM80 citations96
US4695884ASep 22, 1987
Correction of shading effects in video images
IBM94 citations96
US4656665AApr 7, 1987
Thresholding technique for graphics images using histogram analysis
IBM98 citations96
US4646356AFeb 24, 1987
Method for converting a bit map of an image to a run length or run end representation
IBM56 citations96
US4019188AApr 19, 1977
Micromist jet printer
IBM143 citations95
US4799105AJan 17, 1989
Modified technique for suppression of flicker in interlaced video images
IBM32 citations93
US5414423AMay 9, 1995
Stabilization of probability estimates by conditioning on prior decisions of a given context
IBM34 citations92
US5103763AApr 14, 1992
Apparatus for formation and electrostatic deposition of charged droplets
IBM36 citations92
US5066512ANov 19, 1991
Electrostatic deposition of lcd color filters
IBM39 citations92
US4791403ADec 13, 1988
Log encoder/decorder system
IBM30 citations92
US4532503AJul 30, 1985
Sequence controlled pixel configuration
IBM30 citations92
US4965677AOct 23, 1990
Compression of binary halftones
IBM27 citations90
US4558370ADec 10, 1985
Image processing method for graphics images
IBM23 citations82
US4488174ADec 11, 1984
Method for eliminating motion induced flicker in a video image
IBM24 citations82
US4885576ADec 5, 1989
Soft copy display of facsimile images
IBM13 citations74
US4785356ANov 15, 1988
Apparatus and method of attenuating distortion introduced by a predictive coding image compressor
IBM17 citations74
US4504864AMar 12, 1985
Nonlinear filtering of gray scale images
IBM17 citations74
US4227455AOct 14, 1980
Suspension arrangement for an oscillating body
IBM12 citations74
US4393769AJul 19, 1983
Electrostatic clutch-operated printing mechanism
IBM2 citations60