Data processing: measuring – calibrating – or testing – Testing system – Of circuit
Reexamination Certificate
2006-05-30
2006-05-30
Tsai, Carol S. W. (Department: 2857)
Data processing: measuring, calibrating, or testing
Testing system
Of circuit
C702S075000, C702S141000, C702S145000, C370S295000, C329S302000
Reexamination Certificate
active
07054778
ABSTRACT:
An analogue output signal of a sensor which comprises a carrier signal with a carrier frequency ωCwhich is modulated by a measurement size is sampled with a sampling frequency ωAto receive a sampled sensor output signal. The frequency ωAof the sampling signal is set so that it is an integer divisor n of the carrier frequency ωC, wherein the phase of the sampling signal is set so that the sampling signal is synchronous to the sensor output signal. The sampled sensor output signal is filtered now to remove periodically repeated signal components from the sampled sensor output signal. Then a filtered useful signal is received, wherein its amplitude is proportional to the measurand detected by the sensor.
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Gaisser Alexander
Geiger Wolfram
Niklasch Norbert
Glenn Michael A.
Glenn Patent Group
Hahn-Schickard-Gesellschaft fur Angewandte Forschung e.V.
Tsai Carol S. W.
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