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Interference detecting receiver

  • US 6,229,997 B1
  • Filed: 03/10/1998
  • Issued: 05/08/2001
  • Est. Priority Date: 04/21/1997
  • Status: Expired due to Term
First Claim
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1. A receiver capable of interference detection, which comprises:

  • a) means for receiving a radio frequency signal and providing a dc-coupled signal;

    b) means for detecting interference in said dc-coupled signal comprising;

    i. means for providing a charge voltage and increasing said charge voltage in response to said dc-coupled signal during a charging time when said dc-coupled signal comprises interference, said means for providing decreasing said charge voltage in response to said dc-coupled signal during a discharging time when said dc-coupled signal comprises substantially no interference; and

    ii. means for comparing said charge voltage to a reference voltage and providing an interference status signal in an off state in response to said charge voltage being less than said reference voltage, said means for comparing providing said interference status signal in an on state in response to said charge voltage being greater than or substantially equal to said reference voltage;

    c) means for providing an ac-coupled signal from said dc-coupled signal; and

    d)means for quantizing said ac-coupled signal into a digital signal representative of information content from said radio frequency signal.

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