Patents Assigned to Perma-Power Inc.
  • Wireless microphone with FM receiver muting system responsive to excessive undesired AM level or low AGC control level
    Patent number: 4107613
    Abstract: A wireless microphone and receiver in which the receiver output is muted whenever there is insufficient carrier present at the receiver to provide a clear noise free recovered audio or when there is radio frequency interference of a nature in strength to cause amplitude modulation on the IF envelope at the input to the FM detector. The invention places the receiver into a sampling mode whenever it is in a muted condition to conserve batteries and to provide a visual indication of such condition.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: August 15, 1978
    Assignee: Perma-Power Inc.
    Inventors: Daniel L. Queen, Kenneth W. Belt