Patents by Inventor Emo Hermanus Antonius Langendijk

Emo Hermanus Antonius Langendijk 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).

  • Color gamut mapping and brightness enhancement for mobile displays
    Patent number: 8325198
    Abstract: An apparatus and method for primary color correction and clipping is provided that is particularly suited for application in mobile displays. It is a combination of a brightness reduction, and a ‘smart’ clipping algorithm and is based on the perceptual attribute “colorfulness”, in which images that are brighter seem to posses more color. In the smart clipping algorithm, a brightness reduction is followed by a gamut (primary) correction and then a smart clip is performed by “adding white” to the out-of-gamut pixels only. This reduces the saturation while it increases the brightness. That is, the saturation is decreased in favor of increased brightness, which gives similar colorfulness on a mobile display as on an EBU display. This smart clipping affects those colors that cannot be represented on the display.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: December 4, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Michiel Adriaanszoon Klompenhouwer, Emo Hermanus Antonius Langendijk
  • Smart clipper for mobile displays
    Publication number: 20070076226
    Abstract: An apparatus and method for primary color correction and clipping is provided that is particularly suited for application in mobile displays. It is a combination of a brightness reduction, and a ‘smart’ clipping algorithm and is based on the perceptual attribute “colorfulness”, in which images that are brighter seem to posses more color. In the smart clipping algorithm, a brightness reduction is followed by a gamut (primary) correction and then a smart clip is performed by “adding white” to the out-of-gamut pixels only. This reduces the saturation while it increases the brightness. That is, the saturation is decreased in favor of increased brightness, which gives similar colorfulness on a mobile display as on an EBU display. This smart clipping affects those colors that cannot be represented on the display.
    Type: Application
    Filed: October 27, 2004
    Publication date: April 5, 2007
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Michiel Klompenhouwer, Emo Hermanus Antonius Langendijk