Patents by Inventor Andrew S. Pearce

Andrew S. Pearce 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).

  • Method of establishing a radio link in one of a plurality of channels between two radio units
    Patent number: 4995083
    Abstract: The method comprises transmitting an initiating signal in the form of a bit pattern as a continuous burst from one radio unit to the other. The pattern incorporates a preamble pattern and a security code having a plurality of bit sequences. Each sequence is transmitted a number of times. The received security code is compared with stored codes in the other unit, and if a matching pair is identified a response signal is transmitted from the other unit to said one unit. The response signal incorporates the preamble pattern for establishing synchronization between the radio units.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: February 19, 1991
    Assignee: GEC Plessey Telecommunications Limited
    Inventors: John M. Baker, Peter N. Proctor, Andrew S. Pearce