Power conserving adaptive control system for generating signal in portable medical devices
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United States of America Patent
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Mar 8, 2005
Grant Date -
Jan 1, 2004
app pub date -
Mar 10, 2003
filing date -
Mar 13, 2002
priority date (Note) -
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Abstract
A system and method for adjusting power employed by a light emitting device used for medical applications, such as measurement of patient parameter. A system or device includes a light emitting device, a power unit coupled to the light emitting device for powering the light emitting device and responsive to a control signal for adjusting power applied to the light emitting device, and a control unit for providing the control signal and coupled to the power unit, the control signal being determined in response to a characteristic of a signal associated with a physiological parameter measured using light produced by the light emitting device.
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