Signal processing device of analyzing bio-signal and bio-signal analyzing apparatus using the same
US10627349B2 · kind B2 · utility
1Cited by
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19Claims
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Key dates
| Filing date | Nov 13, 2018 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Nov 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A signal processing device that processes a bio-signal includes a lock-in amplifier chip configured to output a frequency-modulated modulation signal and enable one or more light sources to be driven in response to the modulation signal, and a multiplexer configured to receive and multiplex light sensing signals output from the light sources and then measured by multiple light measurement units, and the lock-in amplifier chip sequentially demodulates the multiple light sensing signals transmitted through the multiplexer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.