Inventor · disambiguated record
David J. Metcalfe
Also filed as: METCALFE DAVID · METCALFE DAVID J · METCALFE DAVID JON
58 granted patents·4 pending applications·963 citations·filing 1991–2020
99Inventor score
Top patents by PatentIndex Score
62 records- 0199US9573382B1System and method for missing inkjet compensation in a multi-level inkjet printerXEROX CORP·Filed 2016·Granted Feb 21, 2017·29 cites·31 claims
- 0296US8714692B1System and method of compensating for defective inkjets with context dependent image dataXEROX CORP·Filed 2012·Granted May 6, 2014·15 cites·20 claims
- 0395US7277191B2Fast efficient window region coalescing in a two-pass auto-windowing environmentXEROX CORP·Filed 2001·Granted Oct 2, 2007·98 cites·19 claims
- 0494US8955937B2System and method for inoperable inkjet compensationMETCALFE DAVID JON·Filed 2012·Granted Feb 17, 2015·14 cites·8 claims
- 0592US9975330B1System and method for generation of non-firing electrical signals for operation of ejectors in inkjet printheadsXEROX CORP·Filed 2017·Granted May 22, 2018·4 cites·15 claims
- 0692US8985723B2System and method of compensating for defective inkjetsMETCALFE DAVID JON·Filed 2012·Granted Mar 24, 2015·9 cites·22 claims
- 0788US6594401B1Detection and elimination of scanning artifactsXEROX CORP·Filed 1999·Granted Jul 15, 2003·107 cites·16 claims
- 0887US10919310B1Methods for operating printhead inkjets to attenuate ink drying in the inkjets during printing operationsXEROX CORP·Filed 2019·Granted Feb 16, 2021·2 cites·19 claims
- 0987US5153421AArchitecture for analog and digital image sensor arraysXEROX CORP·Filed 1991·Granted Oct 6, 1992·97 cites·23 claims
- 1086US8807695B1System and method for estimating ink usage in an inkjet printerXEROX CORP·Filed 2013·Granted Aug 19, 2014·4 cites·15 claims
- 1183US9179039B2Methods and systems for processing low resolution images via error diffusionXEROX CORP·Filed 2014·Granted Nov 3, 2015·5 cites·20 claims
- 1282US9262704B1Rendering images to lower bits per pixel formats using reduced numbers of registersXEROX CORP·Filed 2015·Granted Feb 16, 2016·4 cites·20 claims
- 1381US8894179B1System and method for high speed inoperative inkjet compensationXEROX CORP·Filed 2013·Granted Nov 25, 2014·3 cites·13 claims
- 1481US5809177AHybrid error diffusion pattern shifting reduction using programmable threshold perturbationXEROX CORP·Filed 1996·Granted Sep 15, 1998·68 cites·19 claims
- 1579US9357101B1Simultaneous duplex magnification compensation for high-speed software image path (SWIP) applicationsXEROX CORP·Filed 2015·Granted May 31, 2016·3 cites·16 claims
- 1677US7830554B2Fiducial artifact detection and compensation algorithmXEROX CORP·Filed 2007·Granted Nov 9, 2010·5 cites·21 claims
- 1776US10986250B1System and method to detect and adjust image backgroundXEROX CORP·Filed 2020·Granted Apr 20, 2021·1 cites·20 claims
- 1876US7953288B2Edge transition detection in a high-addressable error diffusion environmentXEROX CORP·Filed 2008·Granted May 31, 2011·4 cites·6 claims
- 1976US5608821AMethod of high addressability error diffusionXEROX CORP·Filed 1994·Granted Mar 4, 1997·38 cites·13 claims
- 2075US6603575B2System and apparatus for single subpixel elimination with local error compensation in a high addressable error diffusion processXEROX CORP·Filed 2002·Granted Aug 5, 2003·11 cites·20 claims
- 2175US6144775AMethod and system for storing error values for an image conversion process utilizing dynamic error diffusionXEROX CORP·Filed 1997·Granted Nov 7, 2000·43 cites·4 claims
- 2274US9679356B2Vectorized two stage tile-based scalingXEROX CORP·Filed 2015·Granted Jun 13, 2017·2 cites·20 claims
- 2374US5880857AError diffusion pattern shifting reduction through programmable threshold perturbationXEROX CORP·Filed 1996·Granted Mar 9, 1999·48 cites·21 claims
- 2471US8004714B2System for replacing a portion of an image data stream in an ink jet printerXEROX CORP·Filed 2007·Granted Aug 23, 2011·5 cites·17 claims
- 2568US7460727B2Error diffusion method and hardware architectureXEROX CORP·Filed 2005·Granted Dec 2, 2008·2 cites·19 claims
- 2668US5528384ASystem and method for implementing fast high addressability error diffusion processXEROX CORP·Filed 1994·Granted Jun 18, 1996·26 cites·17 claims
- 2767US8117134B2Neutral pixel correction for proper marked color printingCAMPBELL JAMES B·Filed 2008·Granted Feb 14, 2012·2 cites·15 claims
- 2867US5638121AHigh-speed output of video image data from an array of photosensorsXEROX CORP·Filed 1996·Granted Jun 10, 1997·32 cites·9 claims
- 2966US9007659B1Re-ordered error diffusion for fast implementationXEROX CORP·Filed 2013·Granted Apr 14, 2015·1 cites·20 claims
- 3066US8983182B1System and method for estimating continuous tone values from rendered binary inputXEROX CORP·Filed 2013·Granted Mar 17, 2015·2 cites·10 claims
- 3166US6427030B1Method and system for image conversion utilizing dynamic error diffusionXEROX CORP·Filed 1994·Granted Jul 30, 2002·20 cites·15 claims
- 3266US5696601ASystem and method for redistributing error values from an error diffusion processXEROX CORP·Filed 1994·Granted Dec 9, 1997·24 cites·29 claims
- 3364US8068257B2Color printing reducing artifacts and banding by rendering black dots, replacing dots with process black, and adding non-black dots for different subsets of black dotsLI XING·Filed 2009·Granted Nov 29, 2011·1 cites·13 claims
- 3464US5805724AMethod and system for hybrid error diffusion processing of image information using dynamic screens based on brightness/darkness settingsXEROX CORP·Filed 1996·Granted Sep 8, 1998·31 cites·43 claims
- 3562US9307119B2Systems and methods for computation-efficient image processing system architectureLI XING·Filed 2012·Granted Apr 5, 2016·1 cites·16 claims
- 3662US5933539AMethod and system for hybrid error diffusion processing of image information using programmable screen modulationXEROX CORP·Filed 1996·Granted Aug 3, 1999·26 cites·21 claims
- 3761US5822464AMethod and system for processing image information using video dependent dampened screening and error diffusionXEROX CORP·Filed 1996·Granted Oct 13, 1998·25 cites·21 claims
- 3859US6233360B1Method and system for hybrid error diffusion processing of image information using adaptive white and black reference valuesXEROX CORP·Filed 1996·Granted May 15, 2001·23 cites·31 claims
- 3958US11508071B2System and method to detect, suppress, and modify background regions of scanned documentsXEROX CORP·Filed 2020·Granted Nov 22, 2022·0 cites·20 claims
- 4058US7627188B2Error diffusion method and hardware architectureXEROX CORP·Filed 2008·Granted Dec 1, 2009·0 cites·8 claims
- 4156US5787206AMethod and system for processing image information using expanded dynamic screening and error diffusionXEROX CORP·Filed 1996·Granted Jul 28, 1998·19 cites·17 claims
- 4254US10924625B2Dynamic compression acceleration using real-time image data entropy analysisXEROX CORP·Filed 2019·Granted Feb 16, 2021·0 cites·21 claims
- 4353US6519361B1Optimization of color transformation matrix with all positive coefficientsXEROX CORP·Filed 1999·Granted Feb 11, 2003·16 cites·18 claims
- 4453US6449061B2System and method for providing dynamic noise profile selection for hybrid and error diffusion image processingXEROX CORP·Filed 1998·Granted Sep 10, 2002·16 cites·12 claims
- 4553US6249357B1System and apparatus for tonal reproduction curve adjustment in a hybrid error diffusion processXEROX CORP·Filed 1996·Granted Jun 19, 2001·16 cites·28 claims
- 4652US7724955B2Apparatus and method for auto windowing using multiple white thresholdsXEROX CORP·Filed 2005·Granted May 25, 2010·1 cites·15 claims
- 4752US6351319B1System and apparatus for single subpixel elimination with local error compensation in an high addressable error diffusion processXEROX CORP·Filed 1998·Granted Feb 26, 2002·13 cites·17 claims
- 4850US8842938B2Method and system for performing resolution expansion with high quality edge enhancementLI XING·Filed 2012·Granted Sep 23, 2014·0 cites·17 claims
- 4948US9906687B2Method and apparatus for starting an error diffusion methodXEROX CORP·Filed 2016·Granted Feb 27, 2018·0 cites·18 claims
- 5048US6347159B1Method and system for processing image information using screening and error diffusionXEROX CORP·Filed 1994·Granted Feb 12, 2002·10 cites·15 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →