Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2011-05-31
2011-05-31
Nghiem, Michael P (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S075000, C702S079000, C702S081000
Reexamination Certificate
active
07953566
ABSTRACT:
A calculation method of electromagnetic interference reduction through spectrum diffusion that is for reducing the electromagnetic interference, in which, when a center frequency of a measurement bandwidth is changed so that a spectrum having the maximum amplitude is included in the measurement bandwidth, of a plurality of spectra generated from the frequency spectrum of an electromagnetic interference signal through the spectrum diffusion, the amplitudes of all spectra included in the measurement bandwidth are added up and the maximum total sum of the amplitudes is divided by the amplitude of the electromagnetic interference signal, hence to estimate the electromagnetic interference reduction.
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Yamada, T. et., al. “Estimation of the EMI Reduction by Spread Spectrum Clock”, The Institute of Electronics, Information and Communication Engineers, Technical Report of the IEICE, Dec. 21, 2001, vol. 101, No. 530, pp. 37-42.
NEC Corporation
Nghiem Michael P
Suarez Felix E
Sughrue & Mion, PLLC
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