RAPID RATE-ESTIMATION FOR CELL PHONES, SMART WATCHES, OCCUPANCY, AND WEARABLES
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United States of America Patent
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app pub date -
Sep 25, 2015
filing date -
Sep 24, 2014
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Techniques for respiratory and metabolic monitoring in mobile devices, wearable computing, security, illumination, photography, and other applications may use a phosphor-coated broadband white LED to produce broadband light, which may be transmitted along with ambient light to a target (e.g., ear, face, wrist, or the like). Some scattered light returning from a target may be passed through a spectral filter to produce multiple detector regions sensitive to a different waveband and/or wavelength range, and the detected light may be analyzed to determine a measure of a respiratory rate or effort. In the absence of LED light, ambient light may be sufficient illumination for analysis. The disclosed techniques may provide identifying features of type or status of a tissue target (e.g., respiratory rate, heart rate, heart rate variability, heart function, lung function, fat content, hydration status, confirmation of living tissue, and the like).
First Claim
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