×

Reduced noise interference during handoff

  • US 5,239,675 A
  • Filed: 04/10/1991
  • Issued: 08/24/1993
  • Est. Priority Date: 04/10/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A receiver which reduces noise interference during communication handoff, the receiver having a switched audio path to convey at least an audio signal to a destination telephone system, the receiver comprising:

  • means for accepting a desired radio frequency signal having at least the audio signal and a coverage area identification value modulated thereon;

    means for demodulating said desired radio frequency signal to produce signals representing at least the audio signal and said coverage area identification value;

    means for determining a signal quality value of said desired radio frequency signal;

    means for providing a predetermined coverage area value;

    means for comparing said demodulated coverage area identification value to said predetermined coverage area value;

    means for determining when said switched audio path has been enabled by an undesired radio frequency signal;

    means for disabling said switched audio path when said switched audio path has been enabled by an undesired radio frequency signal; and

    means for enabling said disabled switched audio path responsive to said means for determining a signal quality value and said means for comparing said demodulated coverage area identification value to said predetermined coverage area value.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×