Assignee
NEC VIEWTECHNOLOGY LTD
JP·116 granted patents·19 pending applications·2,301 citations·filing 1999–2010
Top patents by PatentIndex Score
135 records- 0198US6698891B2Polarizing unit, polarizing illumination device using same polarizing unit and projection display device using same polarizing illumination deviceNEC VIEWTECHNOLOGY LTD·Filed 2002·Granted Mar 2, 2004·88 cites·19 claims
- 0297US7070281B2Light source device and projection displayNEC VIEWTECHNOLOGY LTD·Filed 2003·Granted Jul 4, 2006·119 cites·4 claims
- 0395US6886942B2Projector with light source having variable brightness based on detected temperature informationNEC VIEWTECHNOLOGY LTD·Filed 2002·Granted May 3, 2005·153 cites·8 claims
- 0495US6644814B2LED-illumination-type DMD projector and optical system thereofNEC VIEWTECHNOLOGY LTD·Filed 2002·Granted Nov 11, 2003·50 cites·13 claims
- 0595US6513935B2Lens-less projection optical system of reflection typeNEC VIEWTECHNOLOGY LTD·Filed 2001·Granted Feb 4, 2003·98 cites·13 claims
- 0694US7093943B2Projector with foreign matter detecting meansNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted Aug 22, 2006·18 cites·20 claims
- 0794US6771427B1Image-forming optical systemNEC VIEWTECHNOLOGY LTD·Filed 2000·Granted Aug 3, 2004·67 cites·40 claims
- 0893US7185987B2Projector and projector accessoryNEC VIEWTECHNOLOGY LTD·Filed 2004·Granted Mar 6, 2007·59 cites·16 claims
- 0993US6846081B2ProjectorNEC VIEWTECHNOLOGY LTD·Filed 2003·Granted Jan 25, 2005·89 cites·33 claims
- 1092US7384152B2Liquid-cooled projectorNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted Jun 10, 2008·20 cites·19 claims
- 1192US6877862B2ProjectorNEC VIEWTECHNOLOGY LTD·Filed 2003·Granted Apr 12, 2005·47 cites·39 claims
- 1291US7556383B2Projection display apparatus using liquid cooling and air coolingNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Jul 7, 2009·15 cites·20 claims
- 1390US7411789B2Once-through forced air-cooled heat sink for a projection display apparatusNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Aug 12, 2008·21 cites·20 claims
- 1490US7226173B2Projector with a plurality of camerasNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted Jun 5, 2007·20 cites·8 claims
- 1590US6950240B2Imaging optical systemNEC VIEWTECHNOLOGY LTD·Filed 2004·Granted Sep 27, 2005·35 cites·4 claims
- 1690US6805447B2Rear projection display device and projecting method used for the sameNEC VIEWTECHNOLOGY LTD·Filed 2001·Granted Oct 19, 2004·29 cites·5 claims
- 1790US6547402B2Projection lens shifting mechanismNEC VIEWTECHNOLOGY LTD·Filed 2002·Granted Apr 15, 2003·46 cites·9 claims
- 1889US7967446B2Liquid crystal projector apparatus and coolerNEC VIEWTECHNOLOGY LTD·Filed 2010·Granted Jun 28, 2011·6 cites·2 claims
- 1989US7690797B2Projector and focus adjustment methodNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Apr 6, 2010·44 cites·20 claims
- 2089US6877864B1Projector and method of correcting image distortionNEC VIEWTECHNOLOGY LTD·Filed 2004·Granted Apr 12, 2005·47 cites·8 claims
- 2189US6819939B2Cellular phone with high-quality sound reproduction capabilityNEC VIEWTECHNOLOGY LTD·Filed 2002·Granted Nov 16, 2004·229 cites·20 claims
- 2289US6574046B1Reflective time-division image projectorNEC VIEWTECHNOLOGY LTD·Filed 2000·Granted Jun 3, 2003·40 cites·35 claims
- 2388US7880721B2Wave receiving device and method of determining wave receptionNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Feb 1, 2011·46 cites·34 claims
- 2486US7717573B2Projection display apparatusNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted May 18, 2010·11 cites·16 claims
- 2586US6802615B2Projector and lamp information management method used for the sameNEC VIEWTECHNOLOGY LTD·Filed 2003·Granted Oct 12, 2004·34 cites·21 claims
- 2685US6612704B2Reflection type image forming optical system and projectorNEC VIEWTECHNOLOGY LTD·Filed 2002·Granted Sep 2, 2003·27 cites·9 claims
- 2785US6527397B2ProjectorNEC VIEWTECHNOLOGY LTD·Filed 2001·Granted Mar 4, 2003·21 cites·4 claims
- 2884US7661825B2Projector having horizontal displacement sensors for correcting distortionNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Feb 16, 2010·10 cites·20 claims
- 2984US7591571B2Light source device and projection display apparatusNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted Sep 22, 2009·9 cites·13 claims
- 3084US7524069B2Projector with transmitter information receiver and method of correcting distortion of projected imageNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Apr 28, 2009·17 cites·11 claims
- 3184US6597409B1Video projectorNEC VIEWTECHNOLOGY LTD·Filed 2000·Granted Jul 22, 2003·27 cites·21 claims
- 3283US7201484B2Projector with foreign matter detecting meansNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Apr 10, 2007·6 cites·19 claims
- 3382USD504453SProjectorNEC VIEWTECHNOLOGY LTD·Filed 2004·Granted Apr 26, 2005·29 cites·1 claims
- 3481US7965634B2Transmission rate adjustment device and methodNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Jun 21, 2011·8 cites·13 claims
- 3581US6929370B2Projector with foreign matter detecting meansNEC VIEWTECHNOLOGY LTD·Filed 2004·Granted Aug 16, 2005·16 cites·10 claims
- 3681US6715880B2Projector device comprising a rod integrator having at least one notch or a protruded portionNEC VIEWTECHNOLOGY LTD·Filed 2002·Granted Apr 6, 2004·27 cites·17 claims
- 3780US7618146B2Multiscreen display system, multiscreen display method, luminance correction method, and programsNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted Nov 17, 2009·8 cites·20 claims
- 3880US7123420B2Imaging optical systemNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted Oct 17, 2006·7 cites·4 claims
- 3980US7006704B2Method of and apparatus for improving picture qualityNEC VIEWTECHNOLOGY LTD·Filed 2002·Granted Feb 28, 2006·19 cites·28 claims
- 4080US6935749B2Projection display deviceNEC VIEWTECHNOLOGY LTD·Filed 2003·Granted Aug 30, 2005·21 cites·20 claims
- 4179US7452084B2Projector with a device for measuring angle of inclinationNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted Nov 18, 2008·10 cites·20 claims
- 4279US7367678B2Single-plate color projector and synchronization adjusting method thereforNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted May 6, 2008·5 cites·17 claims
- 4379US7040760B2Liquid crystal projectorNEC VIEWTECHNOLOGY LTD·Filed 2003·Granted May 9, 2006·15 cites·35 claims
- 4479US6494581B2Lamp house and projector device thereofNEC VIEWTECHNOLOGY LTD·Filed 2001·Granted Dec 17, 2002·35 cites·26 claims
- 4578US7252384B2Three-panel projection display apparatus for displaying color imagesNEC VIEWTECHNOLOGY LTD·Filed 2005·Granted Aug 7, 2007·5 cites·2 claims
- 4677US6733137B2Digital mirror device projector and method of correcting video signal being used in digital mirror device projectorNEC VIEWTECHNOLOGY LTD·Filed 2003·Granted May 11, 2004·25 cites·14 claims
- 4776US7448755B2Three-panel projection display apparatus for displaying color imagesNEC VIEWTECHNOLOGY LTD·Filed 2007·Granted Nov 11, 2008·4 cites·12 claims
- 4875US8000019B2Optical system for a display panel using divided irradiationNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Aug 16, 2011·4 cites·26 claims
- 4975US7834866B2Display panel driver and display panel driving methodNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Nov 16, 2010·3 cites·12 claims
- 5075US7812888B2Video signal determination device, a video display device, a video signal determination method, and a video display method for determining the type of a video signal that contains a synchronizing signalNEC VIEWTECHNOLOGY LTD·Filed 2006·Granted Oct 12, 2010·6 cites·4 claims
Showing the top 50 of 135 patent records by PatentIndex Score.
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