Simon LeFrancois,Paul R. MacDonald,Kristin A. Stevens
申请号：
US16820044
公开号：
US20200297226A1
申请日:
2020.03.16
申请国别(地区):
US
年份:
2020
代理人:
摘要：
An electronic fitness device comprises a housing, a first optical transmitter array, a first optical receiver, and a second optical receiver. The first optical transmitter array is positioned at a first location on a bottom wall and may output a plurality of optical signals that pass through a user's skin. The first optical receiver is positioned at a second location and may receive the optical signals from the first optical transmitter array such that the optical signals travel along a first signal path and a first distance. The second optical receiver is positioned at a third location and may receive the optical signals from the first optical transmitter array such that the optical signals travel along a second signal path and a second distance, wherein the second signal path is roughly orthogonal to the first signal path and the second distance is different from the first distance.
