Inventor · disambiguated record
Donald H. Willis
Also filed as: HAFERL PETER EDUARD · WILLIS DONALD H · WILLIS DONALD HENRY
152 granted patents·17 pending applications·2,561 citations·filing 1974–2008
99Inventor score
Files withRCA CORP63THOMSON LICENSING37THOMSON LICENSING SA21THOMSON CONSUMER ELECTRONICS18RCA LICENSING CORP9
Top patents by PatentIndex Score
169 records- 0197US7549756B2Pixel shifting color projection systemTHOMSON LICENSING·Filed 2004·Granted Jun 23, 2009·77 cites·16 claims
- 0295US4591832ADigital-to-analog conversion system as for use in a digital TV receiverRCA CORP·Filed 1984·Granted May 27, 1986·58 cites·20 claims
- 0393US4524411ARegulated power supply circuitRCA CORP·Filed 1982·Granted Jun 18, 1985·56 cites·9 claims
- 0492US6574417B1Digital video processing and interface system for video, audio and ancillary dataTHOMSON LICENSING SA·Filed 1999·Granted Jun 3, 2003·77 cites·15 claims
- 0591US7257312B2Fast motion trick mode using dummy predictive picturesTHOMSON LICENSING·Filed 2002·Granted Aug 14, 2007·51 cites·21 claims
- 0690US4789960ADual port video memory system having semi-synchronous data input and data outputRCA LICENSING CORP·Filed 1987·Granted Dec 6, 1988·62 cites·9 claims
- 0788US6647152B2Method and system for contouring reductionTHOMSON LICENSING SA·Filed 2002·Granted Nov 11, 2003·48 cites·28 claims
- 0887US6154603APicture decoding for trick mode operationTHOMSON LICENSING SA·Filed 1998·Granted Nov 28, 2000·51 cites·10 claims
- 0986US6222979B1Memory control in trick play modeTHOMSON CONSUMER ELECTRONICS·Filed 1998·Granted Apr 24, 2001·97 cites·8 claims
- 1086US5442406AWide screen televisionTHOMSON CONSUMER ELECTRONICS·Filed 1991·Granted Aug 15, 1995·70 cites·21 claims
- 1186US5434625AFormatting television pictures for side by side displayTHOMSON CONSUMER ELECTRONICS·Filed 1991·Granted Jul 18, 1995·77 cites·23 claims
- 1284US7006147B2Method and system for MPEG chroma de-interlacingTHOMSON LINCENSING·Filed 2001·Granted Feb 28, 2006·29 cites·13 claims
- 1384US5249049AManaging letterbox displaysTHOMSON CONSUMER ELECTRONICS·Filed 1992·Granted Sep 28, 1993·66 cites·17 claims
- 1483US5329369AAsymmetric picture compressionTHOMSON CONSUMER ELECTRONICS·Filed 1991·Granted Jul 12, 1994·57 cites·29 claims
- 1582US4647968AAnalog-to-digital conversion system as for a narrow bandwidth signal processorRCA CORP·Filed 1984·Granted Mar 3, 1987·28 cites·14 claims
- 1682US4524447ADigital signal processing apparatus having digital ditherRCA CORP·Filed 1983·Granted Jun 18, 1985·31 cites·22 claims
- 1782US4167025AAutomatic peak beam current limiterRCA CORP·Filed 1978·Granted Sep 4, 1979·27 cites·14 claims
- 1881US5519454ALuma/chroma separation filter with common delay element for comb filter separation and recursive noise reduction of composite video input signalTHOMSON CONSUMER ELECTRONICS·Filed 1995·Granted May 21, 1996·64 cites·20 claims
- 1981US4638360ATiming correction for a picture-in-picture television systemRCA CORP·Filed 1985·Granted Jan 20, 1987·39 cites·17 claims
- 2079US6873786B2Reverse trick modes on non-progressive video using special groups of picturesTHOMSON LICENSING SA·Filed 2003·Granted Mar 29, 2005·18 cites·36 claims
- 2179US5309234AAdaptive letterbox detectorTHOMSON CONSUMER ELECTRONICS·Filed 1993·Granted May 3, 1994·47 cites·24 claims
- 2279US4992874AMethod and apparatus for correcting timing errors as for a multi-picture displayRCA LICENSING CORP·Filed 1989·Granted Feb 12, 1991·33 cites·12 claims
- 2379US4639763AInterlace to non-interlace scan converter for RGB format video input signalsRCA CORP·Filed 1985·Granted Jan 27, 1987·34 cites·9 claims
- 2479US4556900AScaling device as for quantized B-Y signalRCA CORP·Filed 1983·Granted Dec 3, 1985·26 cites·20 claims
- 2578US7133598B1Method for converting packetized video data and corresponding navigation data into a second data formatTHOMSON LICENSING·Filed 1999·Granted Nov 7, 2006·27 cites·10 claims
- 2677US6573941B1Low bit rate compression format conversion for improved resolutionTHOMSON LICENSING SA·Filed 2002·Granted Jun 3, 2003·16 cites·23 claims
- 2777US4646138AVideo signal recursive filter with luma/chroma separationRCA CORP·Filed 1985·Granted Feb 24, 1987·31 cites·16 claims
- 2877US4595953ATelevision receiver having character generator with burst locked pixel clock and correction for non-standard video signalsRCA CORP·Filed 1984·Granted Jun 17, 1986·24 cites·3 claims
- 2977US4126816AHigh voltage protection circuitRCA CORP·Filed 1977·Granted Nov 21, 1978·21 cites·11 claims
- 3076US4599642AVideo signal processor with bias error compensationRCA CORP·Filed 1984·Granted Jul 8, 1986·23 cites·7 claims
- 3176US4558351AHue correction circuit for a digital TV receiverRCA CORP·Filed 1983·Granted Dec 10, 1985·24 cites·14 claims
- 3276US4533855ASwitched capacitor S-correction circuitRCA CORP·Filed 1983·Granted Aug 6, 1985·23 cites·9 claims
- 3376US4441052ADegaussing circuit for television receiver having switched mode power supplyRCA CORP·Filed 1982·Granted Apr 3, 1984·23 cites·7 claims
- 3475US4385263ATelevision receiver, push-pull inverter, ferroresonant transformer power supply synchronized with horizontal deflectionRCA CORP·Filed 1980·Granted May 24, 1983·23 cites·29 claims
- 3573US7149410B2Trick modes using non-progressive dummy bidirectional predictive picturesTHOMSON LICENSING·Filed 2002·Granted Dec 12, 2006·12 cites·28 claims
- 3673US5982453AReduction of visibility of spurious signals in videoTHOMSON CONSUMER ELECTRONICS·Filed 1996·Granted Nov 9, 1999·45 cites·8 claims
- 3772US6453114B2Random picture decodingTHOMSON LICENSING SA·Filed 1998·Granted Sep 17, 2002·24 cites·5 claims
- 3871US5430494AIndependent horizontal panning for side-by-side picturesTHOMSON CONSUMER ELECTRONICS·Filed 1993·Granted Jul 4, 1995·30 cites·20 claims
- 3971US4594726ADedithering circuitry in digital TV receiverRCA CORP·Filed 1984·Granted Jun 10, 1986·20 cites·14 claims
- 4070US7519266B1Eliminating picture format artifacts in MPEG trick modesTHOMSON LICENSING·Filed 2000·Granted Apr 14, 2009·6 cites·24 claims
- 4169US5374963APicture resolution enhancement with dithering and deditheringTHOMSON CONSUMER ELECTRONICS·Filed 1991·Granted Dec 20, 1994·27 cites·18 claims
- 4269US5365278ASide by side television picturesTHOMSON CONSUMER ELECTRONICS·Filed 1994·Granted Nov 15, 1994·27 cites·19 claims
- 4369US4786963AAdaptive Y/C separation apparatus for TV signalsRCA LICENSING CORP·Filed 1987·Granted Nov 22, 1988·23 cites·9 claims
- 4469US4317133ATwo-loop horizontal AFPC systemRCA CORP·Filed 1980·Granted Feb 23, 1982·19 cites·7 claims
- 4569US4282460ADeflection and power supply circuit with reduced start-up driveRCA CORP·Filed 1979·Granted Aug 4, 1981·12 cites·9 claims
- 4669US4234829AHigh voltage disabling circuit for a television receiverRCA CORP·Filed 1979·Granted Nov 18, 1980·15 cites·6 claims
- 4769US3970895ACircuit for maintaining operating point stability of an amplifierRCA CORP·Filed 1974·Granted Jul 20, 1976·12 cites·7 claims
- 4868US6909435B2Reduction of gamma correction contouring in liquid crystal on silicon (LCOS) displaysTHOMSON LICENSING SA·Filed 2001·Granted Jun 21, 2005·10 cites·17 claims
- 4968US6831701B2Optimizing display of progressive frame signals up converted to interlaced signalsTHOMSON LICENSING SA·Filed 2001·Granted Dec 14, 2004·7 cites·20 claims
- 5068US6229951B1Digital video picture and ancillary data processing and storageTHOMSON CONSUMER ELECTRONICS·Filed 1999·Granted May 8, 2001·33 cites·2 claims
Showing the top 50 of 169 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →