Inventor · disambiguated record
Agnes Y. Ngai
Also filed as: NGAI AGNES Y · NGAI AGNES YEE
51 granted patents·2 pending applications·2,841 citations·filing 1988–2004
99Inventor score
Files withIBM53
Top patents by PatentIndex Score
53 records- 0198US7085322B2Distributed control strategy for dynamically encoding multiple streams of video data in parallel for multiplexing onto a constant bit rate channelIBM·Filed 2002·Granted Aug 1, 2006·119 cites·45 claims
- 0297US6956901B2Control strategy for dynamically encoding multiple streams of video data in parallel for multiplexing onto a constant bit rate channelIBM·Filed 2004·Granted Oct 18, 2005·132 cites·44 claims
- 0394US6859496B1Adaptively encoding multiple streams of video data in parallel for multiplexing onto a constant bit rate channelIBM·Filed 1999·Granted Feb 22, 2005·158 cites·32 claims
- 0493US6549575B1Efficient, flexible motion estimation architecture for real time MPEG2 compliant encodingIBM·Filed 1996·Granted Apr 15, 2003·187 cites·14 claims
- 0593US6356589B1Sharing reference data between multiple encoders parallel encoding a sequence of video framesIBM·Filed 1999·Granted Mar 12, 2002·203 cites·39 claims
- 0692US6996186B2Programmable horizontal filter with noise reduction and image scaling for video encoding systemIBM·Filed 2002·Granted Feb 7, 2006·67 cites·22 claims
- 0792US5978029AReal-time encoding of video sequence employing two encoders and statistical analysisIBM·Filed 1998·Granted Nov 2, 1999·166 cites·29 claims
- 0890US5737020AAdaptive field/frame encoding of discrete cosine transformIBM·Filed 1997·Granted Apr 7, 1998·142 cites·1 claims
- 0990US5003462AApparatus and method for implementing precise interrupts on a pipelined processor with multiple functional units with separate address translation interrupt meansIBM·Filed 1988·Granted Mar 26, 1991·112 cites·13 claims
- 1089US5526054AApparatus for header generationIBM·Filed 1995·Granted Jun 11, 1996·149 cites·2 claims
- 1188US5661524AMethod and apparatus for motion estimation using trajectory in a digital video encoderIBM·Filed 1996·Granted Aug 26, 1997·126 cites·4 claims
- 1286US6993078B2Macroblock coding technique with biasing towards skip macroblock codingIBM·Filed 2002·Granted Jan 31, 2006·33 cites·17 claims
- 1384US6097757AReal-time variable bit rate encoding of video sequence employing statisticsIBM·Filed 1998·Granted Aug 1, 2000·84 cites·30 claims
- 1483US6020934AMotion estimation architecture for area and power reductionIBM·Filed 1998·Granted Feb 1, 2000·84 cites·47 claims
- 1579US6823015B2Macroblock coding using luminance date in analyzing temporal redundancy of picture, biased by chrominance dataIBM·Filed 2002·Granted Nov 23, 2004·17 cites·20 claims
- 1679US5768537AScalable MPEG2 compliant video encoderIBM·Filed 1996·Granted Jun 16, 1998·50 cites·3 claims
- 1779US5418916ACentral processing unit checkpoint retry for store-in and store-through cache systemsIBM·Filed 1990·Granted May 23, 1995·87 cites·2 claims
- 1878US6269120B1Method of precise buffer management for MPEG video splicingIBM·Filed 1998·Granted Jul 31, 2001·60 cites·10 claims
- 1978US6222883B1Video encoding motion estimation employing partitioned and reassembled search windowIBM·Filed 1999·Granted Apr 24, 2001·58 cites·24 claims
- 2077US6111913AMacroblock bit regulation schemes for video encoderIBM·Filed 1997·Granted Aug 29, 2000·59 cites·29 claims
- 2177US6081622AOptimized field-frame prediction error calculation method and apparatus in a scalable MPEG-2 compliant video encoderIBM·Filed 1997·Granted Jun 27, 2000·46 cites·2 claims
- 2276US6999511B1Dynamically switching quant matrix tables within an MPEG-2 encoderIBM·Filed 1999·Granted Feb 14, 2006·54 cites·29 claims
- 2376US6198767B1Apparatus for color component compressionIBM·Filed 1995·Granted Mar 6, 2001·57 cites·1 claims
- 2476US5786856AMethod for adaptive quantization by multiplication of luminance pixel blocks by a modified, frequency ordered hadamard matrixIBM·Filed 1996·Granted Jul 28, 1998·62 cites·8 claims
- 2576US5606373AMethods for repeated field detectionIBM·Filed 1995·Granted Feb 25, 1997·59 cites·12 claims
- 2667US6895048B2Adaptive encoding of a sequence of still frames or partially still frames within motion videoIBM·Filed 1998·Granted May 17, 2005·34 cites·41 claims
- 2767US6788227B2Apparatus for integrated cascade encodingIBM·Filed 2002·Granted Sep 7, 2004·7 cites·16 claims
- 2866US5898866AMethod and apparatus for counting remaining loop instructions and pipelining the next instructionIBM·Filed 1994·Granted Apr 27, 1999·48 cites·3 claims
- 2965US7936814B2Cascaded output for an encoder system using multiple encodersIBM·Filed 2002·Granted May 3, 2011·6 cites·4 claims
- 3065US5760836AFIFO feedback and control for digital video encoderIBM·Filed 1996·Granted Jun 2, 1998·32 cites·11 claims
- 3164US6956899B2Precise bit control apparatus with look-ahead for MPEG encodingIBM·Filed 1998·Granted Oct 18, 2005·30 cites·12 claims
- 3264US6941025B2Simultaneous vertical spatial filtering and chroma conversion in video imagesIBM·Filed 2001·Granted Sep 6, 2005·6 cites·8 claims
- 3364US6823013B1Multiple encoder architecture for extended searchIBM·Filed 1998·Granted Nov 23, 2004·29 cites·20 claims
- 3464US6198772B1Motion estimation processor for a digital video encoderIBM·Filed 1997·Granted Mar 6, 2001·22 cites·12 claims
- 3563US6188730B1Highly programmable chrominance filter for 4:2:2 to 4:2:0 conversion during MPEG2 video encodingIBM·Filed 1998·Granted Feb 13, 2001·28 cites·32 claims
- 3663US5844607AMethod and apparatus for scene change detection in digital video compressionIBM·Filed 1996·Granted Dec 1, 1998·30 cites·3 claims
- 3763US5291586AHardware implementation of complex data transfer instructionsIBM·Filed 1992·Granted Mar 1, 1994·49 cites·13 claims
- 3858US5031096AMethod and apparatus for compressing the execution time of an instruction stream executing in a pipelined processorIBM·Filed 1988·Granted Jul 9, 1991·28 cites·18 claims
- 3956US6720893B2Programmable output control of compressed data from encoderIBM·Filed 2002·Granted Apr 13, 2004·2 cites·21 claims
- 4056US5650823AHalf pel motion estimation method for B picturesIBM·Filed 1995·Granted Jul 22, 1997·20 cites·2 claims
- 4154US6229853B1Method and apparatus to accommodate partial picture input to an MPEG-compliant encoderIBM·Filed 1998·Granted May 8, 2001·15 cites·11 claims
- 4253US6980598B2Programmable vertical filter for video encodingIBM·Filed 2002·Granted Dec 27, 2005·1 cites·8 claims
- 4352US6040875AMethod to compensate for a fade in a digital video input sequenceIBM·Filed 1998·Granted Mar 21, 2000·16 cites·37 claims
- 4451US6961378B1On-chip dynamic buffer level indicators for digital video encoderIBM·Filed 1998·Granted Nov 1, 2005·15 cites·25 claims
- 4546US7738551B2System and method for processing a high definition television (HDTV) imageIBM·Filed 2002·Granted Jun 15, 2010·0 cites·19 claims
- 4645US5644504ADynamically partitionable digital video encoder processorIBM·Filed 1995·Granted Jul 1, 1997·11 cites·7 claims
- 4743US5121488ASequence controller of an instruction processing unit for placing said unit in a ready, go, hold, or cancel stateIBM·Filed 1990·Granted Jun 9, 1992·15 cites·5 claims
- 4842US2003138045A1Video decoder with scalable architectureIBM·Filed 2002·Application pending·0 cites
- 4941US2003161407A1Programmable and adaptive temporal filter for video encodingIBM·Filed 2002·Application pending·0 cites
- 5040US5333287ASystem for executing microinstruction routines by using hardware to calculate initialization parameters required therefore based upon processor status and control parametersIBM·Filed 1993·Granted Jul 26, 1994·13 cites·13 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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