Inventor · disambiguated record
Joseph Shu
Also filed as: SHU JOSEPH · SHU JOSEPH S
56 granted patents·2 pending applications·1,618 citations·filing 1988–2006
99Inventor score
Top patents by PatentIndex Score
58 records- 0186US6421142B1Out-of-gamut color mapping strategySEIKO EPSON CORP·Filed 1999·Granted Jul 16, 2002·87 cites·18 claims
- 0286US6404511B1Self-calibration of network copier systemSEIKO EPSON CORP·Filed 1998·Granted Jun 11, 2002·98 cites·25 claims
- 0385US7031392B2Method and apparatus for video deblockingSEIKO EPSON CORP·Filed 2002·Granted Apr 18, 2006·23 cites·21 claims
- 0485US5757976AAdaptive filtering and thresholding arrangement for reducing graininess of imagesSEIKO EPSON CORP·Filed 1996·Granted May 26, 1998·91 cites·25 claims
- 0584US6400843B1Color image reproduction with accurate inside-gamut colors and enhanced outside-gamut colorsSEIKO EPSON CORP·Filed 1999·Granted Jun 4, 2002·81 cites·26 claims
- 0683US6233060B1Reduction of moiré in screened images using hierarchical edge detection and adaptive-length averaging filtersSEIKO EPSON CORP·Filed 1998·Granted May 15, 2001·78 cites·23 claims
- 0781US6765695B2Color processing architecture and algorithms for color laser printersSEIKO EPSON CORP·Filed 2001·Granted Jul 20, 2004·22 cites·19 claims
- 0880US5883973AMethod and apparatus for processing a document by segmentation into text and image areasSEIKO EPSON CORP·Filed 1996·Granted Mar 16, 1999·67 cites·19 claims
- 0979US5517335AApparatus and method for enhancing color saturation in halftoned imagesSEIKO EPSON CORP·Filed 1994·Granted May 14, 1996·45 cites·24 claims
- 1078US5963714AMulticolor and mixed-mode halftoningSEIKO EPSON CORP·Filed 1997·Granted Oct 5, 1999·59 cites·34 claims
- 1178US5592592AMethod and apparatus for minimizing artifacts in images produced by error diffusion halftoning utilizing ink reduction processingSEIKO EPSON CORP·Filed 1994·Granted Jan 7, 1997·42 cites·20 claims
- 1278US5469276AMethod and apparatus for reducing artifacts in halftone images using gray balance correctionSEIKO EPSON CORP·Filed 1994·Granted Nov 21, 1995·44 cites·20 claims
- 1377US7623577B2Method and apparatus for video deblockingSEIKO EPSON CORP·Filed 2006·Granted Nov 24, 2009·7 cites·5 claims
- 1477US6204939B1Color matching accuracy inside and outside the gamutSEIKO EPSON CORP·Filed 1998·Granted Mar 20, 2001·56 cites·10 claims
- 1577US5920682AMultiple layer cluster dither matrix for reducing artifacts in printed imagesSEIKO EPSON CORP·Filed 1996·Granted Jul 6, 1999·58 cites·22 claims
- 1673US6181445B1Device-independent and medium-independent color matching between an input device and an output deviceSEIKO EPSON CORP·Filed 1998·Granted Jan 30, 2001·39 cites·16 claims
- 1773US5739917AError-diffusion-type half-toning employing adaptive thresholding for enhanced smoothnessSEIKO EPSON CORP·Filed 1996·Granted Apr 14, 1998·54 cites·28 claims
- 1872US6879734B2Memory efficient image artifact removal technique for LCPSEIKO EPSON CORP·Filed 2001·Granted Apr 12, 2005·12 cites·18 claims
- 1972US6879733B2Image artifact removal technique for LCPSEIKO EPSON CORP·Filed 2001·Granted Apr 12, 2005·18 cites·15 claims
- 2072US6064359AFrame rate modulation for liquid crystal display (LCD)SEIKO EPSON CORP·Filed 1998·Granted May 16, 2000·42 cites·38 claims
- 2172US5692109AMethod and apparatus for minimizing artifacts in images produced by error diffusion halftoningSEIKO EPSON CORP·Filed 1994·Granted Nov 25, 1997·32 cites·40 claims
- 2271US4926267AReproduction of halftone original with reduced moireNYNEX CORP·Filed 1989·Granted May 15, 1990·26 cites·38 claims
- 2370US7212315B2Mixed screen design for multi-mode documentSEIKO EPSON CORP·Filed 2002·Granted May 1, 2007·9 cites·16 claims
- 2470US5594839AApparatus and method for improving black and color separation in halftoned images by printing black dots in a different screen phaseSEIKO EPSON CORP·Filed 1994·Granted Jan 14, 1997·30 cites·25 claims
- 2570US5557709AMethod and apparatus for dither array generation to reduce artifacts in halftoned imagesSEIKO EPSON CORP·Filed 1994·Granted Sep 17, 1996·30 cites·20 claims
- 2669US6522427B1Color table manipulations for contour reductionSEIKO EPSON CORP·Filed 1999·Granted Feb 18, 2003·35 cites·28 claims
- 2769US5905490AGenerating color-correction look-up-table addresses by multi-level half-toningSEIKO EPSON CORP·Filed 1996·Granted May 18, 1999·36 cites·28 claims
- 2869US5684932AMethod and apparatus for dither array generation to reduce artifacts in halftoned image data utilizing ink reduction processingSEIKO EPSON CORP·Filed 1994·Granted Nov 4, 1997·29 cites·29 claims
- 2968US7668366B2Mosaic image data processingSEIKO EPSON CORP·Filed 2005·Granted Feb 23, 2010·4 cites·8 claims
- 3066US6842184B2Three dimensional stochastic screen for LCD and videoSEIKO EPSON CORP·Filed 2002·Granted Jan 11, 2005·7 cites·12 claims
- 3166US5872896AContinuous-tone ink reductionSEIKO EPSON CORP·Filed 1996·Granted Feb 16, 1999·31 cites·40 claims
- 3263US5946454AImage enhancement during half-toning using low-pass and high-pass filteringSEIKO EPSON CORP·Filed 1997·Granted Aug 31, 1999·27 cites·21 claims
- 3363US5568572AMethod and apparatus for tonal correction in binary printing devices by predistortion of image dataSEIKO EPSON CORP·Filed 1994·Granted Oct 22, 1996·20 cites·26 claims
- 3461US6088512AVoid-and-cluster dither-matrix generation for better half-tone uniformitySEIKO EPSON CORP·Filed 1997·Granted Jul 11, 2000·24 cites·21 claims
- 3561US5625755AMethod and apparatus for tonal correction in binary printing devices by predistortion of image data utilizing ink reduction processingSEIKO EPSON CORP·Filed 1994·Granted Apr 29, 1997·19 cites·27 claims
- 3661US4984097AHalftone reproduction with enhanced gray level reproducibilityNYNEX CORP·Filed 1989·Granted Jan 8, 1991·16 cites·30 claims
- 3760US5675716AMethod and apparatus for vivid color correction in binary printing devicesSEIKO EPSON CORP·Filed 1994·Granted Oct 7, 1997·18 cites·21 claims
- 3858US6038340ASystem and method for detecting the black and white points of a color imageSEIKO EPSON CORP·Filed 1996·Granted Mar 14, 2000·22 cites·18 claims
- 3957US6031626AColor stochastic screening with optimal color dot placementSEIKO EPSON CORP·Filed 1997·Granted Feb 29, 2000·20 cites·21 claims
- 4057US5875287ABanding noise reduction for clustered-dot ditherSEIKO EPSON CORP·Filed 1996·Granted Feb 23, 1999·20 cites·14 claims
- 4155US5841951AInk duty-cycle controlSEIKO EPSON CORP·Filed 1996·Granted Nov 24, 1998·19 cites·80 claims
- 4254US7032987B2Nozzle scheduling for ink jet printingSEIKO EPSON CORP·Filed 2004·Granted Apr 25, 2006·5 cites·21 claims
- 4352US5838885ASalt-and-pepper-noise reductionSEIKO EPSON CORP·Filed 1996·Granted Nov 17, 1998·20 cites·18 claims
- 4452US5768411ADispersed-dot dither with improved light-color smoothnessSEIKO EPSON CORP·Filed 1996·Granted Jun 16, 1998·16 cites·16 claims
- 4550US7265876B2PWM rendering for color/gray-scale text and graphics for laser printerSEIKO EPSON CORP·Filed 2002·Granted Sep 4, 2007·2 cites·24 claims
- 4650US4942480AReproduction of halftone original with moire reduction and tone adjustmentNYNEX CORP·Filed 1988·Granted Jul 17, 1990·10 cites·42 claims
- 4747US6633412B1Smoothness enhancement in laser printing through periodic modulation of halftone cellSEIKO EPSON CORP·Filed 1999·Granted Oct 14, 2003·12 cites·15 claims
- 4847US5796929ABanding and ink-bleeding reduction in cluster dither by screen displacementSEIKO EPSON CORP·Filed 1996·Granted Aug 18, 1998·12 cites·36 claims
- 4946US7477250B2Method and system for hapto-visual scene development and deploymentHANDSHAKE VR 2007 INC·Filed 2006·Granted Jan 13, 2009·1 cites·28 claims
- 5046US5963715AColor stochastic screening with optimal color dot placement for display devices having arbitrary aspect ratiosSEIKO EPSON CORP·Filed 1997·Granted Oct 5, 1999·12 cites·18 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
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