公开(公告)号：US20240272291A1

公开(公告)日：2024-08-15

申请号：US18647369

申请日：2024-04-26

Applicant: ALPS ALPINE CO., LTD.

Inventor： Yuki FUTAGI ,  Yukimitsu YAMADA ,  Daisuke TAKAI ,  Hongyuan CHEN ,  Takeo SATO ,  Akihiro ABE

IPC: G01S11/10 ,  G01S11/04

CPC classification number: G01S11/10 ,  G01S11/04

Abstract: A wireless device includes a transmitter; a receiver; and a control device configured to obtain a first difference of a predetermined physical quantity, in a unit time, of a predetermined-frequency signal transmitted by the transmitter to another device, and calculate a second difference of the predetermined physical quantity, in the unit time, of the predetermined-frequency signal received by the another device, based on a signal received by the receiver; and perform a determination process of comparing the first difference and the second difference to determine legitimacy of the signal received by the receiver.