Patents by Inventor Francoise Houmeau

Francoise Houmeau 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).

  • Method and system for synchronizing colorimetric rendering of a juxtaposition of display surfaces uniform
    Patent number: 7940329
    Abstract: A method for making uniform the colorimetric rendering of a display surface including several adjacent display screens (10a, 10b), comprising for each pair of adjacent screens (10a, 10b) steps of: periodically sampling (21) by a calculation device (5) image data in two corresponding screen (10a, 10b) areas (13a, 13b) in the pair of adjacent screens, analyzing (22, 23, 24) by the calculation device (5) image data sampled in each period to determine a difference in calorimetric rendering between the two screen areas, determining by a correction device (6) connected to the calculation device a process to be applied to the video stream to one of the two video systems controlling the two screens in the pair of adjacent screens, by applying a predetermined correction law to the difference in calorimetric rendering, and applying (26) by the correction device the process to said video system, in order to make the colorimetric rendering of the display surface uniform.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: May 10, 2011
    Inventors: Francoise Houmeau, Olivier Gachignard, Alain Leyreloup
  • Method and System for Synchronizing Colorimetric Rendering of a Juxtaposition of Display Surfaces
    Publication number: 20090174780
    Abstract: A method for making uniform the colorimetric rendering of a display surface including several adjacent display screens (10a, 10b), comprising for each pair of adjacent screens (10a, 10b) steps of: periodically sampling (21) by a calculation device (5) image data in two corresponding screen (10a, 10b) areas (13a, 13b) in the pair of adjacent screens, analyzing (22, 23, 24) by the calculation device (5) image data sampled in each period to determine a difference in calorimetric rendering between the two screen areas, determining by a correction device (6) connected to the calculation device a process to be applied to the video stream to one of the two video systems controlling the two screens in the pair of adjacent screens, by applying a predetermined correction law to the difference in calorimetric rendering, and applying (26) by the correction device the process to said video system, in order to make the colorimetric rendering of the display surface uniform.
    Type: Application
    Filed: February 4, 2009
    Publication date: July 9, 2009
    Applicant: CHARTOLEAUX KG LIMITED LIABILITY COMPANY
    Inventors: Francoise Houmeau, Olivier Gachignard, Alain Leyreloup
  • Method and system for synchronizing colorimetric rendering of a juxtaposition of display surfaces
    Publication number: 20050117053
    Abstract: A method for making uniform the colorimetric rendering of a display surface including several adjacent display screens (10a, 10b), comprising for each pair of adjacent screens (10a, 10b) steps of: periodically sampling (21) by a calculation device (5) image data in two corresponding screen (10a, 10b) areas (13a, 13b) in the pair of adjacent screens, analyzing (22, 23, 24) by the calculation device (5) image data sampled in each period to determine a difference in calorimetric rendering between the two screen areas, determining by a correction device (6) connected to the calculation device a process to be applied to the video stream to one of the two video systems controlling the two screens in the pair of adjacent screens, by applying a predetermined correction law to the difference in calorimetric rendering, and applying (26) by the correction device the process to said video system, in order to make the calorimetric rendering of the display surface uniform.
    Type: Application
    Filed: February 18, 2003
    Publication date: June 2, 2005
    Applicant: France Telecom
    Inventors: Francoise Houmeau, Olivier Gachignard, Alain Leyreloup