Patents by Inventor Pieter-Jelle Gerbrandts

Pieter-Jelle Gerbrandts 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).

  • Generation of encrypted video information
    Patent number: 7681227
    Abstract: An encrypted stream of video information (20) contains first video frames (22) and second video frames which are accessible and not accessible during trick play respectively. From a source stream encrypted that is for decryption with repeatedly changing control words sections of the stream are identified where respective first ones of the frames occur in the stream. Control words for decryption (24) are included in the stream. At least part of the control words are included in the stream at positions selected synchronized to the identified sections.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: March 16, 2010
    Assignee: IPG Electronics 503 Limited
    Inventors: Sjoerd Zwart, Pieter-Jelle Gerbrandts, Tom Kan
  • Generation of encrypted video information
    Publication number: 20060188094
    Abstract: An encrypted stream of video information (20) contains first video frames (22) and second video frames which are accessible and not accessible during trick play respectively. From a source stream encrypted that is for decryption with repeatedly changing control words sections of the stream are identified where respective first ones of the frames occur in the stream. Control words for decryption (24) are included in the stream. At least part of the control words are included in the stream at positions selected synchronized to the identified sections.
    Type: Application
    Filed: January 20, 2004
    Publication date: August 24, 2006
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Sjoerd Zwart, Pieter-Jelle Gerbrandts, Tom Kan