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Class Information
Number: 353/70
Name: Optics: image projectors > Distortion compensation > For projection axis inclined to screen
Description: Subject matter including means to eliminate the keystone effect or other distortion when the projector is above the viewing screen, as in most theaters, or when the projection axis is oblique to the screen or some other purpose.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621647 |
Optical projection system and method of use |
Nov. 24, 2009 |
| 7607783 |
Imaging apparatus, image processing apparatus, image processing method of imaging apparatus and computer program |
Oct. 27, 2009 |
| 7600875 |
Image display apparatus, image display method, and recording medium |
Oct. 13, 2009 |
| 7600876 |
Optical angle detection apparatus |
Oct. 13, 2009 |
| 7581839 |
Keystone correction derived from the parameters of projectors |
Sep. 1, 2009 |
| 7562987 |
Complex mirror projection display |
Jul. 21, 2009 |
| 7562986 |
Laser projection display |
Jul. 21, 2009 |
| 7559658 |
Auto focus projector with short focus adjustment time |
Jul. 14, 2009 |
| 7553031 |
Projection image display apparatus and projection optical unit to be used therein |
Jun. 30, 2009 |
| 7549754 |
Distortion correction for projector |
Jun. 23, 2009 |
| 7537350 |
Image processing system, projector, program, information storage medium, and image processing method |
May. 26, 2009 |
| 7537351 |
Image forming projection system and projector using input and output signals |
May. 26, 2009 |
| 7524070 |
Projection control system, projector and projection control method |
Apr. 28, 2009 |
| 7513628 |
Projection device with camera to provide for iterative adjustments |
Apr. 7, 2009 |
| 7494229 |
Projector and processing line specification method |
Feb. 24, 2009 |
| 7488079 |
System and method for projecting images onto a moving screen |
Feb. 10, 2009 |
| 7478912 |
Image projector display device |
Jan. 20, 2009 |
| 7475995 |
Projector trapezoidal correction |
Jan. 13, 2009 |
| 7475996 |
Elevating device |
Jan. 13, 2009 |
| 7467769 |
Elevating mechanism |
Dec. 23, 2008 |
| 7452084 |
Projector with a device for measuring angle of inclination |
Nov. 18, 2008 |
| 7448756 |
Slim optical projection system and image display apparatus employing the same |
Nov. 11, 2008 |
| 7441906 |
Keystone correction system and method |
Oct. 28, 2008 |
| 7426804 |
Specialty display window |
Sep. 23, 2008 |
| 7422331 |
Image processing system, projector, and image processing method |
Sep. 9, 2008 |
| 7401929 |
Projector and image correction method |
Jul. 22, 2008 |
| 7399086 |
Image processing method and image processing device |
Jul. 15, 2008 |
| 7384158 |
Image projection system and method |
Jun. 10, 2008 |
| 7380946 |
Semiautomatic keystone correction system and method |
Jun. 3, 2008 |
| 7370976 |
Projection type image display device |
May. 13, 2008 |
| 7370977 |
Optical projection system and image display device having the same |
May. 13, 2008 |
| 7360904 |
Projector, range finding method, and recording medium on which range finding method is recorded |
Apr. 22, 2008 |
| 7354161 |
Projector |
Apr. 8, 2008 |
| 7352913 |
System and method for correcting multiple axis displacement distortion |
Apr. 1, 2008 |
| 7347564 |
Keystone correction using a part of edges of a screen |
Mar. 25, 2008 |
| 7344253 |
Projector and method of projecting image from projector |
Mar. 18, 2008 |
| 7331678 |
Method and system for a thermal architecture and user adjustable keystone in a display device |
Feb. 19, 2008 |
| 7303285 |
Projector and method of projecting projection image |
Dec. 4, 2007 |
| 7290886 |
Illuminating system and method for improving asymmetric projection |
Nov. 6, 2007 |
| 7290887 |
Projector and projection method |
Nov. 6, 2007 |
| 7270421 |
Projector, projection method and storage medium in which projection method is stored |
Sep. 18, 2007 |
| 7270422 |
Image processing system, projector, program, information storage medium, and image processing method |
Sep. 18, 2007 |
| 7267444 |
Image projector display device |
Sep. 11, 2007 |
| 7262911 |
Reflex-type screen assembly |
Aug. 28, 2007 |
| 7252389 |
Projection optical system |
Aug. 7, 2007 |
| 7252388 |
Projector with tilt-angle detecting capability |
Aug. 7, 2007 |
| 7252387 |
System and method for mechanically adjusting projector pose with six degrees of freedom for image alignment |
Aug. 7, 2007 |
| 7252386 |
Keystone distortion correction of a projector |
Aug. 7, 2007 |
| 7246908 |
Combination control for a projection device |
Jul. 24, 2007 |
| 7242818 |
Position and orientation sensing with a projector |
Jul. 10, 2007 |
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