Patents by Inventor Derek Stanley Juniper

Derek Stanley Juniper 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).

  • Audio frequency automatic muting arrangement
    Patent number: 4099127
    Abstract: An audio frequency muting arrangement includes one circuit for detecting intelligence signals in a received audio frequency signal, and a further circuit for detecting noise signals, so as to compare the levels of the noise and intelligence signals and to control a muting switch in dependence thereon. The invention is applicable to noisy environments, e.g. aircraft, in which a threshold circuit is used to track the ambient noise level. Particular signal detection circuits are described.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: July 4, 1978
    Assignee: Elliott Brothers (London) Limited
    Inventor: Derek Stanley Juniper