Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2004-05-27
2010-02-09
Feliciano, Eliseo Ramos (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C324S076120
Reexamination Certificate
active
07660683
ABSTRACT:
The instantaneous value of an intermediate waveform I is the instantaneous value of a unipolar waveform U multiplied through amplification by an upscaling factor UF of 1.5. A plateau value P is subtracted from the intermediate value I, and the result of this subtraction is multiplied by a multiplication factor MF of 0.6. The result of the multiplication is added to the plateau value P, which sum becomes an auxiliary waveform A. During the ‘fall-below’ periods F, the value of a combined waveform C is arranged to follow whichever is the highest of the auxiliary value A and the plateau value P. Outside the fall-below periods, the value of the combined waveform C follows whichever is the highest of the unipolar value U and the plateau value P. This combined waveform C has, for a given plateau level P, a narrower fall-below window. Phase-chopping thus has an effect on the power of the output signal over a greater range of the cycle than can be provided by the corresponding prior art arrangement.
REFERENCES:
patent: 4642564 (1987-02-01), Hurley
patent: 5495245 (1996-02-01), Ashe
patent: 5506477 (1996-04-01), Davy et al.
patent: 5638287 (1997-06-01), Appel
patent: 5757654 (1998-05-01), Appel
Kitchin et al., “Circuit measures true-rms and average value”, Sep. 26, 2002, EDN, www.edn.com, pp. 104-105.
Analog Devices, Inc, “Low Cost, Low Power, True RMS-to-DC Converter”, 1999, www.analog.com, pp. 1-8.
International Search Report dated Oct. 26, 2004, in PCT/GB2004/002255.
Zhenhua Wang: “Novel Pseudo RMS Current Converter for Sinusoidal Signals Using a CMOS Precision Current Rectifier” IEEE Transactions on Instrumentation and Measurement, IEEE Inc. NY, vol. 39, No. 4, Aug. 1, 1990, pp. 670-671.
Bublitz, C.: “Echteffektiv-Digitalmultimeter im Vergleich Zum Mittelwert-DMM” Elektrotechnische Zeitschrift—ETZ VDE Verlag GMBH, Berlin, DE, vol. 117, No. 9, May 1, 1996, pp. 24-25.
Cuthbertson Brian
Davy Peter Gordon
Baran Mary C
Feliciano Eliseo Ramos
Stroock & Stroock & Lavan LLP
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