Patents by Inventor Johan Paul Marie Gerald Linnartz

Johan Paul Marie Gerald Linnartz 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).

  • Copy control using digital speed bumps
    Patent number: 7286451
    Abstract: A digital media recorder and a method of controlling such are provided. During attempts to copy media content, sub-sequences are extracted from an input media sequence. A digital fingerprint of the sub-sequence is calculated and compared with at least one first reference fingerprint from a database. The outcome of the comparison determines the action to take in the further processing. Recording of the input media sequence on a media carrier is either allowed or obstructed, e.g. disallowed. In the case recording of the sequence is allowed, the database is updated with information that the digital media sequence has been recorded.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: October 23, 2007
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Gijsbrecht Carel Wirtz, Antonius Adrianus Cornelis Maria Kalker, Antonius Adriaan Maria Staring, Jaap Andre Haitsma, Johan Paul Marie Gerald Linnartz