Patents by Inventor Johan Henrik Litleskare

Johan Henrik Litleskare has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7855753
    Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: December 21, 2010
    Inventors: Knut Krogstad, Johan Henrik Litleskare, Randi Litleskare, legal representative
  • Publication number: 20100220247
    Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.
    Type: Application
    Filed: February 8, 2010
    Publication date: September 2, 2010
    Inventors: Knut KROGSTAD, Johan Henrik LITLESKARE, Randi Litleskare
  • Patent number: 7679690
    Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: March 16, 2010
    Inventors: Knut Krogstad, Johan Henrik Litleskare
  • Patent number: 6999133
    Abstract: Digital correction module for video projector where a correction module is provided to give a non-linear re-imaging of an image so that it is displayed correct on a non-ideal screen (curved screen) where a correction module is provided in each of a plurality of video projectors after a common image source in order to create a large, of several composite sub image, projected image of said image source. The correction module comprises a sequencer (1), a pixel write control (2), a parameter storage (7), a read address generator (13), a coefficient generator (5), a scaling generator (6), an adder (8), a pixel storage (3), a vertical mixer (9), a horizontal mixer (10) and a look up function means (12) for correction of differences in the border area of the image of the respective projectors such as geometry correction, soft transition tuning, vignette correction and gamma correction.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: February 14, 2006
    Inventors: Knut Krogstad, Johan Henrik Litleskare