Variable sensing using frequency domain

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system

Reexamination Certificate

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C702S073000, C702S076000, C702S081000

Reexamination Certificate

active

08060325

ABSTRACT:
Embodiments of a method and apparatus for variable sensing using the frequency domain are taught herein. An exposure of a system to a physical variable is determined by periodically sensing the physical variable to produce a plurality of digital samples. The plurality of digital samples is converted to respective frequency domain representations. The exposure is calculated using the frequency domain representations.

REFERENCES:
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patent: 5945932 (1999-08-01), Smith et al.
patent: 6155488 (2000-12-01), Olmstead et al.
patent: 7142705 (2006-11-01), Inoue et al.
patent: 7284255 (2007-10-01), Apel et al.
patent: 7401519 (2008-07-01), Kardous

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