公开(公告)号：US09841505B2

公开(公告)日：2017-12-12

申请号：US15038399

申请日：2013-12-10

Applicant: LG ELECTRONICS INC.

Inventor： Sungmin Kim ,  Sehwan Park ,  Kyungchan Park ,  Hyunjoon Lee ,  Youngman Kwon ,  Jayong Lee

IPC: G01C3/08 ,  G01S17/36 ,  G01B11/02 ,  G01S7/491

CPC classification number: G01S17/36 ,  G01B11/026 ,  G01S7/4911

Abstract: An electronic device including a signal unit configured to emit a first radiated signal to a subject; a signal receiving unit configured to detect a reflected signal of the first radiated signal from the subject; and a controller configured to determine whether a distance to the subject is calculated based on the reflected signal of the first radiated signal, change a waveform of the first radiated signal when the distance is not calculated, cause the signal output unit to emit a second radiated signal with the changed waveform, detect, via the signal receiving unit, a reflected signal of the second radiated signal from the subject, and calculate the distance to the subject based on the reflected signal of the second radiated signal.