Patents by Inventor Carl Wennstam

Carl Wennstam 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).

  • Display device with dynamic color gamut
    Publication number: 20090244113
    Abstract: The specification and drawings present a new method, apparatus and software product for dynamically adjusting a color gamut of a display (e.g., a field sequential color display) and further adjusting a luminance of the display in an electronic device by adjusting and turning on field duties of primary colors. During each color field, the other primary colors of light sources supporting the display can be turned on at their respective fractions of their color field. These fractions can be continuously tunable in order to control the color coordinate of each primary color dynamically thus adjusting the color gamut and the luminance of the display.
    Type: Application
    Filed: January 14, 2009
    Publication date: October 1, 2009
    Inventors: Johan Bergquist, Carl Wennstam
  • Display device with dynamic color gamut
    Patent number: 7486304
    Abstract: The specification and drawings present a new method, apparatus and software product for dynamically adjusting a color gamut of a display (e.g., a field sequential color display) and further adjusting a luminance of the display in an electronic device by adjusting and turning on field duties of primary colors. During each color field, the other primary colors of light sources supporting the display can be turned on at their respective fractions of their color field. These fractions can be continuously tunable in order to control the color coordinate of each primary color dynamically thus adjusting the color gamut and the luminance of the display.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: February 3, 2009
    Assignee: Nokia Corporation
    Inventors: Johan Bergquist, Carl Wennstam
  • Display device with dynamic color gamut
    Publication number: 20070139449
    Abstract: The specification and drawings present a new method, apparatus and software product for dynamically adjusting a color gamut of a display (e.g., a field sequential color display) and further adjusting a luminance of the display in an electronic device by adjusting and turning on field duties of primary colors. During each color field, the other primary colors of light sources supporting the display can be turned on at their respective fractions of their color field. These fractions can be continuously tunable in order to control the color coordinate of each primary color dynamically thus adjusting the color gamut and the luminance of the display.
    Type: Application
    Filed: December 21, 2005
    Publication date: June 21, 2007
    Inventors: Johan Bergquist, Carl Wennstam