Search International and National Patent Collections

1. (WO2017172181) AUTOMATIC POWER REDUCTION IN PHOTOPLETHYSMOGRAPHY AND PULSE OXIMETRY SYSTEMS

Pub. No.:    WO/2017/172181    International Application No.:    PCT/US2017/019925
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: A61B 5/1455
A61B 5/00
Applicants: INTEL CORPORATION
Inventors: ABBASI, Mohammad U.
GNANAESWARAN, Sendill K.
COWLEY, Nicholas P.
Title: AUTOMATIC POWER REDUCTION IN PHOTOPLETHYSMOGRAPHY AND PULSE OXIMETRY SYSTEMS
Abstract:
Systems, apparatuses and methods may provide for a transmit circuit including a light source and a receive circuit including a photodetector and a transimpedance amplifier (TIA) coupled to the photodetector. Additionally, a calibration circuit may be coupled to the transmit circuit and the receive circuit, wherein the calibration circuit includes a current controller to set an operational current of the light source to a minimum value that results in a target output voltage of the receive circuit. In one example, the gain of the TIA remains substantially constant during calibration of the receive circuit.