Ultra-low-power pulse oximeter implemented with an energy-efficient photoreceptor

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United States of America Patent

PATENT NO 8242429
APP PUB NO 20090163784A1
SERIAL NO

11903571

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Abstract

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An energy-efficient photoreceptor apparatus and a transimpedance amplifier apparatus having high energy-efficiency and low power consumption of which are achieved through multiple distributed gain amplification stages, adaptive loop gain control circuitry and unilateralization, thereby enabling fast and precise performance over a wide range of input-current levels. The high-energy efficiency, robust feedback stability and performance of the present invention can be utilized to achieve sub-milliwatt pulse oximeters and may be employed in other current-to-voltage amplification and conversion applications. The use of analog processing on the outputs of the photoreceptor apparatus also helps lower the overall power of pulse oximeters.

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Patent Owner(s)

  • SARPESHKAR, RAHUL

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dastjerdi, Maziar Tavakoli Waltham, US 1 29
Sarpeshkar, Rahul Arlington, US 48 921

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