Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2006-11-21
2006-11-21
Mottola, Steven J. (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
C330S20700P
Reexamination Certificate
active
07138859
ABSTRACT:
A class D amplifier defines different sets of resampled points A and B for channels chA and chB of an input digital audio signal, extracts an interpolation signal of the digital audio signal at the resampled points A and another interpolation signal of the digital audio signal at the resampled points B, and makes a correction to the phase of at least one of the interpolation signals. Thereby, radiation noise can be reduced even if the number of channels of the digital audio signal increases.
REFERENCES:
patent: 6473457 (2002-10-01), Pascual et al.
patent: 2004/0223545 (2004-11-01), Lee
patent: 2001-223537 (2001-08-01), None
Ohara Kenichiro
Oki Masashi
Mottola Steven J.
Renesas Technology Corp.
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