Patents by Inventor Hervé Pierrot

Hervé Pierrot 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).

  • Control of an electroluminescent display
    Patent number: 8138998
    Abstract: A device for controlling an electroluminescent matrix display by successive selection of its lines, including a column control circuit having circuitry capable of placing, at the beginning of the selection of a line, the display column at a precharge voltage based on the operating voltage of the previous line, the column control circuit also having circuitry capable of modifying the precharge voltage according to the difference between luminance instructions of the previous line and those of the selected line.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: March 20, 2012
    Assignee: STMicroelectronics S.A.
    Inventors: Céline Mas, Corinne Ianigro, Hervé Pierrot
  • CONTROL OF AN ELECTROLUMINESCENT DISPLAY
    Publication number: 20080309594
    Abstract: A device for controlling an electroluminescent matrix display by successive selection of its lines, including a column control circuit having circuitry capable of placing, at the beginning of the selection of a line, the display column at a precharge voltage based on the operating voltage of the previous line, the column control circuit also having circuitry capable of modifying the precharge voltage according to the difference between luminance instructions of the previous line and those of the selected line.
    Type: Application
    Filed: April 11, 2008
    Publication date: December 18, 2008
    Applicant: STMicroelectronics S.A.
    Inventors: Celine Mas, Corinne Ianigro, Herve Pierrot
  • Method for centering and dimensioning an image on a cathode-ray tube
    Patent number: 7215378
    Abstract: A method for centering and dimensioning an image on a cathode ray tube receiving display signals supplied by a display calculator includes measuring durations of vertical black edges of the image, and modifying adjustment values for a horizontal centering of the image to obtain equal lateral vertical edges. The method further includes measuring the durations of the vertical black edges of the image to calculate adjustment values for a horizontal dimension of the image to cause the vertical black edges to disappear. Durations of the horizontal black edges of the image are measured to calculate adjustment values of a vertical dimension of the image, and to calculate adjustment values of a vertical centering of the image to cause the horizontal black edges to disappear for centering the image vertically. The adjustment values obtained are recorded in a memory of the display calculator.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: May 8, 2007
    Assignee: STMicroelectronics SA
    Inventors: Pascal Janin, Laurent Vera, Hervé Pierrot
  • Method for centring and dimensioning an image on a cathode-ray tube
    Publication number: 20040012716
    Abstract: The steps of the process comprise:
    Type: Application
    Filed: February 11, 2003
    Publication date: January 22, 2004
    Inventors: Pascal Janin, Laurent Vera, Herve Pierrot