Optical receiver chain for components of a photoplethysmograph signal
US9717426B2 · kind B2 · utility
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2References
20Claims
0Family size
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Key dates
| Filing date | Aug 27, 2015 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Feb 15, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0238
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.