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Apparatus and method for measuring a characteristic pulse width for a data channel in a data handling device

  • US 5,940,021 A
  • Filed: 06/12/1997
  • Issued: 08/17/1999
  • Est. Priority Date: 06/12/1996
  • Status: Expired due to Fees
First Claim
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1. An apparatus for measuring a characteristic pulse width for a data channel of a data handling device, said apparatus comprising:

  • a comparator for receiving a rectified input signal, comparing said rectified input signal to a reference signal representative of a predetermined reference voltage, and generating a pulse signal corresponding to a portion of said rectified input signal having a signal level in excess of said predetermined reference voltage, with said rectified input signal corresponding to a predetermined reference datum detected through said data channel;

    a low pass filter, in communication with said comparator, for low-pass filtering said pulse signal and generating therefrom an average value signal representative of an average value of said pulse signal; and

    an analog-to-digital converter, in communication with said low pass filter, for converting said average value signal into a digital signal corresponding to said average value, whereby a digital processor can generate from said digital signal a pulse width value representative of said characteristic pulse width.

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