US 11,051,758 B2
Electronic device capable of detecting wearing state or touching state
Che-Chia Hsu, Hsin-Chu (TW); Jian-Cheng Liao, Hsin-Chu (TW); Yu-Han Chen, Hsin-Chu (TW); and Chi-Chieh Liao, Hsin-Chu (TW)
Assigned to PixArt Imaging Inc., Hsin-Chu (TW)
Filed by PixArt Imaging Inc., Hsin-Chu (TW)
Filed on Oct. 3, 2019, as Appl. No. 16/591,651.
Prior Publication US 2021/0100502 A1, Apr. 8, 2021
Int. Cl. A61B 5/00 (2006.01); G04G 21/02 (2010.01); H03K 17/955 (2006.01); G06F 1/16 (2006.01)
CPC A61B 5/681 (2013.01) [G04G 21/025 (2013.01); H03K 17/955 (2013.01); G06F 1/163 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A wearable electronic device with a function of detecting a wearing state, comprising:
at least one electrode;
a capacitance calculating circuit, coupled to the at least one electrode, configured to calculate a capacitance variation generated by the at least one electrode;
a wearing state determining circuit, coupled to the capacitance calculating circuit, configured to determine the wearing state according to the capacitance variation; and
a sensing surface, by which a user can cause the capacitance variation generated by the at least one electrode when the user wears the wearable electronic device;
wherein the at least one electrode is provided in a plurality of angle regions of the sensing surface, and the wearing state determining circuit determines the wearing state according to the capacitance variation generated by the at least one electrode in the plurality of angle regions.