USER-WEARABLE DEVICES INCLUDING OPTICAL SENSORS WITH POWER SAVING FEATURES AND METHODS FOR USE THEREWITH
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United States of America Patent
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Issued Date -
Jul 21, 2016
app pub date -
Jan 16, 2015
filing date -
Jan 16, 2015
priority date (Note) -
Abandoned
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Abstract
A battery powered user-wearable device includes a light source and a light detector and is configured to obtain at least two different types of physiological measurements using the light source and the light detector. During a first period of time, the user-wearable device is operated in accordance with a first operational mode that is used to obtain a first type of physiological measurement. In the first operational mode the light source is driven to emit pulses of light at a low frequency. During a second period of time, the user-wearable device is operated in accordance with a second operational mode that is used to obtain a second type of physiological measurement. In the second operational mode the light source is either driven to continually emit light or is driven to emit pulses of light at a high frequency. The first operational mode consumes less power than the second operational mode.
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