CLOSED-LOOP ACTIVE NOISE REDUCTION SYSTEM, SUCH AS FOR A THERMAL PRINTER
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United States of America Patent
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Issued Date -
Jun 27, 2013
app pub date -
Dec 21, 2012
filing date -
Dec 23, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method for reduce noise emitted by a printer are disclosed herein. In one embodiment, a sound detector disposed proximate to a noise source detects a measured noise signal, which is analyzed to determine one or more resonant frequencies thereof. A feedback signal is determined based on the analyzed noise signal and is used to generate a compensated signal 180 degrees out of phase with the feedback signal. The compensated signal is output proximate to the noise source.
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