Signal processing device for systems in differential...

Details Signal processing device for systems in differential... Signal processing device for systems in differential...

2011-03-15

2011-03-15

Dunn, Drew A (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

Reexamination Certificate

active

07908122

ABSTRACT:
A signal measurement and processing device includes two systems allowing a signal and its opposite to be simultaneously received at the input and two signals able to take polynomial form, as a function of the input signals, to be returned. The device includes means for performing a weighted sum and difference of the two output signals in such a manner that at least the weighted sum is independent to a first order of the variations in the input signals. This processing operation is particularly well adapted to systems subjected to spurious effects such as thermal drifts.

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Regtien, P P L et al.: “Measurement Science for Engineers”, 2004 Butterworth-Heinemann, XP002463195 , section 3.6, introduction, p. 79, dernier paragraphe—p. 81, premier paragraphe, figures 3.16 et 3.17.
Bentley D J P: “Principles of Measurements Systems (Fourth Edition)”, 2004, Prentice Hall, XP002463196, pp. 42; figures 3.5(b).
Morris A S: “Measurement and Instrumentation Principles”, 2001, Butterworth-Heinemann, XP002463197, section 3.3.2; figure 3.2.

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