Method and apparatus for broken link detect using audio energy level

  • US 5,349,701 A
  • Filed: 01/15/1992
  • Issued: 09/20/1994
  • Est. Priority Date: 01/15/1992
  • Status: Expired due to Fees
First Claim
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1. A radio communications device for receiving a radio frequency (RF) signal via an RF link, the radio communications device comprising:

  • receiving means for receiving the RF signal;

    signal sampling means coupled to the receiving means for sampling the received signal over a predetermined time period to measure a plurality of signal energy levels;

    determining means coupled to the signal sampling means for determining whether the RF link is broken or not in response to an average of the plurality of signal energy levels exceeding or not exceeding a predetermined threshold; and

    control means coupled to the determining means for generating a noise indication signal in response to the average of the plurality of signal energy levels exceeding the predetermined threshold; and

    audio output means coupled to the receiving means and the control means for presenting audible output in response to the received signal if no noise indication signal is generated by the control means.

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