Andrew R. CHURCH,Jaclyn Leverett WASSON,Daniel Joel FRESCHL,Esther VIGIL-RUIZ
申请号：
US15900612
公开号：
US20180177416A1
申请日:
2018.02.20
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A wearable computing device includes one or more processors, memory and a physiological metric sensor system, including a light source configured to direct light into tissue of a user wearing the wearable computing device, a light detector implemented a distance away from the light source and configured to detect light from the light source that reflects back from the user, and a light-blocking portion implemented between the light source and the light detector. The wearable computing device may further include an audio port directed towards an ear canal of the user and control circuitry configured to activate the light source during a period of time and generate a light detector signal indicating an amount of light detected by the light detector during the period of time.
