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WEARABLE HEART RATE MONITOR
专利权人:
Inc.;Fitbit
发明人:
Jung Ook Hong,Shelten Gee Jao Yuen
申请号:
US14295144
公开号:
US20140288390A1
申请日:
2014.06.03
申请国别(地区):
US
年份:
2014
代理人:
摘要:
Some embodiments provide a wearable fitness monitoring device including a motion sensor and a photoplethysmographic (PPG) sensor. The PPG sensor includes (i) a periodic light source, (ii) a photo detector, and (iii) circuitry determining a user's heart rate from an output of the photo detector. Some embodiments provide methods for operating a heart rate monitor of a wearable fitness monitoring device to measure one or more characteristics of a heartbeat waveform. Some embodiments provide methods for operating the wearable fitness monitoring device in a low power state when the device determines that the device is not worn by a user. Some embodiments provide methods for operating the wearable fitness monitoring device in a normal power state when the device determines that the device is worn by a user.
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中国工程科技知识中心
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http://www.ckcest.cn/home/

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