Patents by Inventor Roderick J. Passmore

Roderick J. Passmore 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).

  • Adaptive diversity equipment arrangement for cellular mobile telephone systems
    Patent number: 5119501
    Abstract: A method and apparatus utilizing adaptive diversity in the base station of a cellular telephone system where during a diversity period the signal strengths of two receivers assigned to three or more sectors are continuously compared and the stronger audio output signal is switched to be used in the station signal processing circuits and where during non-diversity, relatively short time periods, samples of adjacent sectors signal strengths are measured and compared so that the adjacent sector with the strongest signal is applied to one receiver while the other receiver supplies the central sector to the other receiver for transmission to the station audio processor.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: June 2, 1992
    Assignee: Ericsson GE Mobile Communications, Inc.
    Inventors: Fred G. Perry, Roderick J. Passmore