Patents by Inventor John Christopher Kay

John Christopher Kay 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 measuring speed of a mobile unit and a receiver for use in a wireless communication system
    Patent number: 5787348
    Abstract: A method of measuring speed of a mobile unit for use in a wireless communication system 20. The method includes the steps of receiving a radio frequency (RF) signal from the mobile unit 202, measuring signal quality of the RF signal to produce a received quality signal 204, sampling the received quality signal during a first time period to produce a first group of samples 206, sampling the received quality signal during a second time period to produce a second group of samples 208, calculating a variation in signal quality of the RF signal in response to the first and second group of samples 210, and determining a speed measurement in response to the variation in signal quality 212.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: July 28, 1998
    Assignee: Motorola, Inc.
    Inventors: William Daniel Willey, Michael Joseph Wroble, John Christopher Kay