公开(公告)号：US11974838B2

公开(公告)日：2024-05-07

申请号：US16964087

申请日：2019-01-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hansung Lee ,  Hwan Shim ,  Yongjin Lee ,  Jooman Han ,  Jongho Park ,  Gahee Jung ,  Seounghun Kim ,  Jihwan Kim ,  Choonghee Ahn ,  Hyungjoon Lim ,  Jiwoon Jung ,  Jeongmin Park

IPC: A61B5/024 ,  A61B5/00 ,  A61B5/0255 ,  A61B5/021

CPC classification number: A61B5/02416 ,  A61B5/02427 ,  A61B5/0255 ,  A61B5/721 ,  A61B5/02108 ,  A61B5/02433 ,  A61B2562/0219 ,  A61B2562/0238

Abstract: An electronic device may include a PPG sensor including a light emitter that applies a current in a specified range and emits a light signal corresponding to the current and a light detector that amplifies a received light signal by applying one of a plurality of gain values, a memory that stores a plurality of sets of PPG models corresponding to the plurality of gain values and including a current value and PPG level data corresponding to the current value, and at least one processor electrically connected to the PPG sensor and the memory.

公开(公告)号：US11429234B2

公开(公告)日：2022-08-30

申请号：US16759121

申请日：2018-10-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jeehoon Lee ,  Eungi Min ,  Yongjin Lee ,  Suho Lee ,  Sukwang Lim ,  Hyungjoon Lim ,  Seungeun Lee

IPC: G06F3/044 ,  G06F3/041 ,  H03K17/96

Abstract: An electronic device according to various embodiments of the present invention may comprise: at least one electrode having conductivity; a capacitance sensor, at least one switch electrically connected between the at least one electrode and the capacitance sensor, and capable of selectively connecting the at least one electrode and the capacitance sensor; and a control circuit, wherein the control circuit measures a first capacitance value by using the capacitance sensor in a state where the at least one switch is open, measures a second capacitance value corresponding to an external object contacting the at least one electrode, by using the capacitance sensor in a state where the at least one switch is connected, corrects the second capacitance value by using the first capacitance value, and determines the corrected second capacitance value as a capacitance value for the external object. Various other embodiments are possible.