Patents by Inventor David F. Mears

David F. Mears 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).

  • Parasitic radio transmission system
    Publication number: 20020142767
    Abstract: A system is disclosed for sending parasitic digital packets over a trunked radio system network during the time that a trunking channel is unoccupied. The parasitic digital packets are received by one or more parasitic receivers, which are not a part of the conventional trunked radio system. To ensure the integrity and reliability of the trunked radio system, the transmission of these parasitic data packets is preempted when the system is required to transmit signals between users of the trunked radio system.
    Type: Application
    Filed: March 30, 2001
    Publication date: October 3, 2002
    Inventors: David F. Mears, Paul Goodjohn
  • Mobile vehicular repeater system which provides up-link acknowledgement signal to portable transceiver at end of transceiver transmission
    Patent number: 4539706
    Abstract: A mobile vehicular repeater detects the termination of a received transmission from a portable transceiver to be repeated and, in response to such detection, activates the up-link radio transmitter so as to send an acknowledgement signal to the message originating portable transceiver station signifying the probable successful conclusion of a repeating operation. Special techniques are utilized to prevent confusion between such an acknowledgement signal and similar prioritizing transmissions on the up-link frequency.
    Type: Grant
    Filed: February 3, 1983
    Date of Patent: September 3, 1985
    Assignee: General Electric Company
    Inventors: David F. Mears, Hubert A. Patterson
  • Programmable radio
    Patent number: 4525865
    Abstract: An arrangement for externally programming a radio upon proper identification under microcomputer control using fixed and transient memories without removing or adding circuit modules to the radio.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: June 25, 1985
    Assignee: General Electric Company
    Inventor: David F. Mears