公开(公告)号：US20190025940A1

公开(公告)日：2019-01-24

申请号：US16071468

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Hongjo SHIM ,  Jungwook HWANG ,  Joungsun BAE ,  Myungwon KIM ,  Youngmo KIM

IPC: G06F3/03 ,  G04G21/00 ,  G06F3/0362

Abstract: A watch-type mobile terminal according to an embodiment of the present invention includes: a stem including a shaft of a round rod shape made of a metal material; a sensing unit for recognizing a reflection pattern of the metal material, which is formed by irradiating light onto the shaft and reflecting the light on the surface of the shaft; and a control unit for recognizing the operation of the stem on the basis of the reflection pattern of the metal material and controlling the watch-type mobile terminal in response to the operation of the stem.