Assignee
KEITHLEY DOUGLAS G
US·27 granted patents·2 pending applications·43 citations·filing 2005–2012
Top patents by PatentIndex Score
29 records- 0189US8760725B1Tone dependent threshold perturbation error diffusion halftoneKEITHLEY DOUGLAS G·Filed 2009·Granted Jun 24, 2014·10 cites·20 claims
- 0283US8237103B1Mechanical galvanometer tilt correction controlKEITHLEY DOUGLAS G·Filed 2011·Granted Aug 7, 2012·4 cites·20 claims
- 0382US8436883B1Systems and methods for laser spacing compensation in laser printing devicesKEITHLEY DOUGLAS G·Filed 2010·Granted May 7, 2013·5 cites·14 claims
- 0478US8630031B1Color adjustment for a scanned imageKEITHLEY DOUGLAS G·Filed 2007·Granted Jan 14, 2014·4 cites·38 claims
- 0575US8681381B1Pixel stacking avoidance error diffusion halftoneKEITHLEY DOUGLAS G·Filed 2009·Granted Mar 25, 2014·3 cites·18 claims
- 0674US8587625B2Laser printer with reduced banding artifactsKEITHLEY DOUGLAS G·Filed 2011·Granted Nov 19, 2013·2 cites·20 claims
- 0773US9678334B1Oscillating mirror line based image transformationKEITHLEY DOUGLAS G·Filed 2012·Granted Jun 13, 2017·2 cites·20 claims
- 0873US8760714B1Color space conversionKEITHLEY DOUGLAS G·Filed 2010·Granted Jun 24, 2014·2 cites·20 claims
- 0972US8085287B2Laser printer with reduced banding artifactsKEITHLEY DOUGLAS G·Filed 2007·Granted Dec 27, 2011·3 cites·35 claims
- 1069US8120632B1Allignment of color planes in multi-beam multi-pass printersKEITHLEY DOUGLAS G·Filed 2008·Granted Feb 21, 2012·2 cites·58 claims
- 1168US8582187B1Method and apparatus for reducing a color fringeKEITHLEY DOUGLAS G·Filed 2011·Granted Nov 12, 2013·1 cites·20 claims
- 1268US8537424B1On-the-fly halftone image generationKEITHLEY DOUGLAS G·Filed 2010·Granted Sep 17, 2013·1 cites·23 claims
- 1365US8289599B1Mechanical galvanometer tilt correctionKEITHLEY DOUGLAS G·Filed 2007·Granted Oct 16, 2012·2 cites·23 claims
- 1464US8284411B1Faster monochrome printing for in-line electrophotographic color printersKEITHLEY DOUGLAS G·Filed 2007·Granted Oct 9, 2012·1 cites·10 claims
- 1559US8553304B1Mechanical galvanometer tilt correctionKEITHLEY DOUGLAS G·Filed 2012·Granted Oct 8, 2013·0 cites·20 claims
- 1657US8339689B1Exposure correction for scannersKEITHLEY DOUGLAS G·Filed 2007·Granted Dec 25, 2012·0 cites·36 claims
- 1755US8643661B1Non raster row pixel processingKEITHLEY DOUGLAS G·Filed 2007·Granted Feb 4, 2014·1 cites·42 claims
- 1855US8462363B1Faster monochrome printing for in-line electrophotographic color printersKEITHLEY DOUGLAS G·Filed 2012·Granted Jun 11, 2013·0 cites·20 claims
- 1955US8233196B1Halftoner block employing average values and shiftsKEITHLEY DOUGLAS G·Filed 2011·Granted Jul 31, 2012·0 cites·16 claims
- 2052US8194282B2Image forming apparatus for identifying undesirable toner placementKEITHLEY DOUGLAS G·Filed 2011·Granted Jun 5, 2012·0 cites·17 claims
- 2151US8432424B1Alignment of color planes in multi-beam multi-pass printersKEITHLEY DOUGLAS G·Filed 2012·Granted Apr 30, 2013·0 cites·18 claims
- 2251US8390868B1Systems and methods for memory reduction for print head data bufferingKEITHLEY DOUGLAS G·Filed 2009·Granted Mar 5, 2013·0 cites·6 claims
- 2351US8306363B2Methods and systems for image scalingKEITHLEY DOUGLAS G·Filed 2012·Granted Nov 6, 2012·0 cites·20 claims
- 2451US8135229B1Image processing method and deviceKEITHLEY DOUGLAS G·Filed 2009·Granted Mar 13, 2012·0 cites·11 claims
- 2550US8953907B2Modified bicubic interpolationKEITHLEY DOUGLAS G·Filed 2012·Granted Feb 10, 2015·0 cites·20 claims
- 2650US8098252B2Parallel video processing architectureKEITHLEY DOUGLAS G·Filed 2010·Granted Jan 17, 2012·0 cites·10 claims
- 2749US8976417B2Dither-synchronized image scanningKEITHLEY DOUGLAS G·Filed 2011·Granted Mar 10, 2015·0 cites·16 claims
- 2844US2007109568A1Method and apparatus for printing an imageKEITHLEY DOUGLAS G·Filed 2005·Application pending·0 cites
- 2941US2007053038A1Laser scanner assemblyKEITHLEY DOUGLAS G·Filed 2005·Application pending·0 cites
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