Patents by Inventor Claude Robillard

Claude Robillard 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).

  • System and method for distributing photons when rendering an image using photon mapping
    Patent number: 7221365
    Abstract: A method for distributing photons among light sources when rendering an image of a scene using photon mapping includes the steps of computing a total energy for the scene, where the scene includes a plurality of light sources, and computing an average energy of the light sources. The method also includes the steps of comparing, for each of the light sources, the actual energy of the light source to an average energy of the light source and distributing photons to each of the light sources based on the comparison.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: May 22, 2007
    Assignee: Autodesk, Inc.
    Inventors: Daniel Lévesque, Pierre Felix Breton, Claude Robillard
  • Thermal printing head and controller using past present and future print data to generate micropulse patterns
    Patent number: 4937590
    Abstract: A thermal printing head and controller include a serial input port for receiving a serial image bit means for storage of successive lines of serial image data. A multiplexer is connected to the RAMs to produce simultaneous micropulse bits. The micropulse bits are received simultaneously by serial inputs of a plurality of shift registers. The shift registers control the states of a plurality of thermal styli.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: June 26, 1990
    Assignee: Gould Electronique S.A.
    Inventors: Jean-Claude Robillard, Roger Lepee