×

Noise detector employing plural delay circuits

  • US 4,220,926 A
  • Filed: 08/23/1978
  • Issued: 09/02/1980
  • Est. Priority Date: 08/26/1977
  • Status: Expired due to Term
First Claim
Patent Images

1. An impulse noise detector comprising rectifier means operable on an applied signal to provide a rectified signal, smoothing means for smoothing the rectified signal, a plurality of delay means for operating on the smoothed signal to afford a corresponding plurality of time delayed signals, and means for selectively combining the corresponding plurality of time delayed signals to afford an output which is indicative of the presence, in the applied signal, of impulse noise;

  • wherein each of the plurality of delay means operates in accordance with a function
    
    
    space="preserve" listing-type="equation">e.sup.-s =e.sup.-ks /e.sup.-(k-1)s where0<

    k<

    1e=the exponential function of approximately 2.718s=the complex frequency variable.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×