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Methods and systems for modulation and demodulation of optical signals
专利权人:
发明人:
Steven P. Hotelling,Marcelo M. Lamego
申请号:
US14618664
公开号:
US09952095B1
申请日:
2015.02.10
申请国别(地区):
US
年份:
2018
代理人:
摘要:
An electronic device includes one or more light sources for emitting light toward a body part of a user and one or more optical sensors for capturing light samples while each light source is turned on and for capturing dark samples while the light source(s) are turned off. A signal produced by the one or more optical sensors is filtered and demodulated produce multiple demodulated signals each associated with a light source. Each signal associated with the light source(s) is analyzed to estimate or determine a physiological parameter of the user.
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