Patents by Inventor Franciscus Antonius Johannes Kamperman

Franciscus Antonius Johannes Kamperman 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).

  • Record carrier, playback apparatus and information system comprising a record carrier and a playback apparatus
    Patent number: 7068574
    Abstract: An information system according to the invention comprises a record carrier and a playback apparatus. The record carrier has information marks along a track thereof and exhibits first variations caused by existence and nonexistence of the information marks along the track. The first variations represent an information signal recorded on said record carrier. The record carrier further exhibits second variations caused by variations associated with the information marks. The phase of the second variations is coupled to the phase of the first variations.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: June 27, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Job Cornelis Oostveen, Willem Marie Julia Marcel Coene, Jan Harm De Boer, Franciscus Antonius Johannes Kamperman, Aloysius Michael Josephus Maria Spruijt, Paulus Reinier Joannes Van Roosmalen
  • Record carrier, playback apparatus and information system comprising a record carrier and a playback apparatus
    Publication number: 20020031064
    Abstract: An information system according to the invention comprises a record carrier (1) and a playback apparatus (20). The record carrier has information marks along a track (11) thereof and exhibits first variations caused by existence and nonexistence of the information marks along the track. The first variations represent an information signal recorded on said record carrier. The record carrier further exhibits second variations (W) caused by variations associated with the information marks. The phase of the second variations is coupled to the phase of the first variations.
    Type: Application
    Filed: July 2, 2001
    Publication date: March 14, 2002
    Inventors: Job Cornelis Oostveen, Willem Marie Julia Marcel Coene, Jan Harm De Boer, Franciscus Antonius Johannes Kamperman, Aloysius Michael Josephus Maria Spruijt, Paulus Reinier Joannes Van Roosmalen
  • Conditional access system for controlling the access to a data content
    Publication number: 20010012366
    Abstract: A conditional access system for controlling the access of receivers of end-users to data content transmitted from a data content source in an uplink system. The uplink system comprises a scrambler for scrambling the content supplied from the content source, an entitlement control message generator for generating entitlement control messages containing a control word and an entitlement identification and a transmitter for transmitting the scrambled content and the entitlement control messages. A descrambler, an entitlement control message decoder and means for recording entitlement identifications are associated to the receiver. The entitlement control message decoder supplies a control word to the descrambler for descrambling a part of the received scrambled content for which the receiver is entitled, if a match between the entitlement identification in the entitlement control message and the recorded entitlement identification exists.
    Type: Application
    Filed: December 20, 2000
    Publication date: August 9, 2001
    Inventors: Bartholomeus Johannes Van Rijnsoever, Franciscus Antonius Johannes Kamperman, Mathieu Petrus Franciscus Maria Goudsmits