×

Circuit for detecting and suppressing pulse-shaped interferences

  • US 4,736,163 A
  • Filed: 07/17/1985
  • Issued: 04/05/1988
  • Est. Priority Date: 07/23/1984
  • Status: Expired due to Fees
First Claim
Patent Images

1. A circuit for detecting pulse-shaped interferences in an electrical signal comprising:

  • an input terminal for receiving the electrical signal;

    a high-pass filter coupled to the input terminal;

    an output terminal for supplying an output signal; and

    ,at least one signal path coupling said output terminal and high-pass filter comprising;

    a peak detector, having an input connected to an output of said high-pass filter for producing an output signal having a relatively short build-up time so that relatively rapidly it becomes representative of of a peak value in the electrical signal applied to said input, and a relatively long decay time so that it decays relatively slowly thereafter;

    a device for determining an average value having an input coupled to an output of the peak detector for determining a running average value of the output signal of the peak detector, and for supplying an output signal representative of the running average value;

    a comparator having a first and a second input coupled to receive the output signal of the device for determining an average value and to receive the output signal of the peak detector, respectively, for comparing the output signal of the peak detector with the output signal of the device for determining an average value and for supplying to said output terminal output signal representative of the result of comparing.

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