Patents by Inventor Olivier Koemmerling

Olivier Koemmerling 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).

  • Card sharing countermeasures
    Patent number: 8949881
    Abstract: A method for identifying of at least an identifier of a conditional access card used in a control word redistribution system by passing information over a side channel, said method comprising a modification step of the response time, of the card, to a control word request, according to a predefined function which depends on the identifier of the said cards.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: February 3, 2015
    Inventor: Olivier Koemmerling
  • CARD SHARING COUNTERMEASURES
    Publication number: 20130031576
    Abstract: A method for identifying of at least an identifier of a conditional access card used in a control word redistribution system by passing information over a side channel, said method comprising a modification step of the response time, of the card, to a control word request, according to a predefined function which depends on the identifier of the said cards.
    Type: Application
    Filed: November 25, 2009
    Publication date: January 31, 2013
    Applicant: SERELA
    Inventor: Olivier Koemmerling