Method and apparatus for decreasing the interference and noise s

Details Method and apparatus for decreasing the interference and noise s Method and apparatus for decreasing the interference and noise s

1995-09-29

1996-11-26

Trammell, James P.

Boots, shoes, and leggings

324608, 341143, G06F 1900

Patent

active

055792472

ABSTRACT:
A ratiometric converter receives an external sense signal and external reference signal and provides an output signal which is proportional to the sense signal and inversely proportional to the reference signal. Electromagnetic interference and noise coupled onto the sense and reference lines are effectively removed by converting the sense signal to a digital signal and converting the reference signal to a digital signal. The digital sense signal is then filtered through a low pass filter to provide a filtered signal, and similarly, the digital reference signal is filtered through a low pass filter to provide a filtered digital reference signal. A divider circuit then divides the filter digital sense signal by the filter digital reference signal to provide the output signal.

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