Patents by Inventor Phillip Thistlethwaite

Phillip Thistlethwaite 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).

  • Traffic information warning system with single modulated carrier
    Patent number: 6236336
    Abstract: A traffic information warning system for conveying first and second messages regarding a traffic situation from a traffic advisory site is disclosed. The system comprises a transmitter adapted for placement at the advisory site and a receiver. The transmitter includes an oscillator for transmitting a first carrier signal and a second carrier signal. The first carrier signal has a first discrete carrier frequency and the second carrier signal has a second discrete carrier frequency. The first and second discrete carrier signal frequencies are located at a frequency location. The first message of a traffic situation is reflective of the specific frequency locations of the first and second discrete frequencies. A modulator modulates the first carrier signal with a modulating signal reflective of the second message regarding the traffic situation. The second carrier signal comprises an unmodulated signal.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: May 22, 2001
    Assignee: Cobra Electronics Corp.
    Inventors: David C. Oliva, Phillip Thistlethwaite