Patents by Inventor Orvin G. Hill

Orvin G. Hill 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).

  • Radio identification systems
    Patent number: 4180815
    Abstract: To enable a transponder in a radio identification system, such as a secondary surveillance radar system, to remain responsive to a new interrogating signal received while it is processing a previously received interrogating signal, the transponder is provided with storage means arranged to store the new interrogating signal until the previously received interrogating signal has been processed. In a preferred arrangement, the transponder also includes variable delay means arranged to delay the transmission of a reply signal to each received interrogation by a variable amount inversely dependent upon the length of any delay introduced by the storage means so that the aggregate of the variable delay and the storage delay is constant for all received interrogating signals.
    Type: Grant
    Filed: January 20, 1978
    Date of Patent: December 25, 1979
    Assignee: The Secretary of State for Defence in her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventor: Orvin G. Hill