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Method and apparatus for accurate, high speed pulse-echo measurement calibration

  • US 5,221,928 A
  • Filed: 06/12/1992
  • Issued: 06/22/1993
  • Est. Priority Date: 06/12/1992
  • Status: Expired due to Fees
First Claim
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1. A method for processing signals, the method comprising steps of:

  • receiving an input signal;

    providing a non-volatile information store having therein desired sensitivity time control threshold information;

    extracting specific values of the desired sensitivity time control threshold information at successive time intervals to provide specific successive values of the desired sensitivity time control threshold information;

    converting the specific successive values of the desired sensitivity time control threshold information to analog values to provide an analog calibration signal; and

    comparing the analog calibration signal to a present input signal to provide a comparison signal.

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