Patents by Inventor Jean-Pierre M. Defeuilly

Jean-Pierre M. Defeuilly 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).

  • Patent number: 4606040
    Abstract: A transmitting-receiving station for transmitting information by frequency hopping comprises a code generator to define the use of a plurality of channels in accordance with a high-speed skip law for a transmitting-receiving station in the stand-by mode, the high-speed skip law consisting in the use of each of the channels during a period of time Tp, while the low-speed skip law governs the change of listening channels used during N.times.Tp, each corresponding to a center channel out of a sequence of N channels of the high-speed skip law. The center channel contains a synchronizing code. The station comprises a memory device to which a write circuit for progressively storing therein the codes produced by the generator and also to which a read circuit is connected to take the codes from the memory as a function of the positions of the transmitting-receiving station.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: August 12, 1986
    Assignee: U.S. Philips Corporation
    Inventors: Guy A. J. David, Jean-Pierre H. Van Uffelen, Jean-Pierre M. Defeuilly