Patents by Inventor Philip Andrew Laven

Philip Andrew Laven 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).

  • Dual band digital broadcast receiver
    Patent number: 5784418
    Abstract: A digital broadcast transmission system comprises a plurality of spaced transmitters (6). Each transmitter (6) receives signals for transmission from a master transmitter (2), e.g. on a satellite, along with a reference frequency (F.sub.REF). The reference frequency is used to generate the transmission frequency at each spaced transmitter. At a receiver (12), conversion means can be used, to enable signals from the master transmitter (2) and from the other transmitter(s) to be received. A preferred application is digital audio broadcasting (DAB). Specifically, the present invention is useful in connection with Coded Orthogonal Frequency Division Multiplex (COFDM) modulation.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: July 21, 1998
    Assignee: British Broadcasting Corporation
    Inventors: John Prailsford Sykes, Simon Parnall, Philip Andrew Laven