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Emergency Broadcast Receiver

  • US 20110136453A1
  • Filed: 04/09/2009
  • Published: 06/09/2011
  • Est. Priority Date: 04/10/2008
  • Status: Active Grant
First Claim
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1. An emergency broadcast radio receiver comprising:

  • a signal detector circuit, when powered, adapted to detect a predetermined emergency broadcast signal;

    a timing generator circuit adapted to couple a battery to the signal detector circuit to periodically power the signal detector circuit; and

    a demodulator circuit, when powered, adapted to demodulate an audio signal modulated on a radio frequency signal at a tuning frequency;

    wherein the signal detector circuit, on detection of the predetermined emergency broadcast signal is adapted, to couple the battery to the demodulator circuit to power the demodulator circuit.

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