Optical receiver chain for components of a photoplethysmograph signal
The circuitry of an optical receiver reduces the ambient DC component and the pleth DC component to leave a pleth signal with substantially only a pleth AC component. The circuitry also provides gain control and can provide transmit power control to change the range of the pleth AC component to occupy a desired input range of an analog-to-digital converter.
TEXAS INSTRUMENTS INCORPORATED
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inventional additional inventional inventional
Seung Bae Srinath Mathur Wen Arup Ajit Sriram
Lee Ramaswamy Li Polley Sharma Narayanan