公开(公告)号：US20170292291A1

公开(公告)日：2017-10-12

申请号：US15516919

申请日：2015-10-13

Applicant: DENSO CORPORATION

Inventor： Ryusuke ISHIKAWA ,  Nobuyoshi NAGAI ,  Koji UENO

IPC: E05B49/00 ,  E05B81/78 ,  B60R25/24

CPC classification number: E05B49/008 ,  B60R25/24 ,  B60R25/245 ,  E05B81/78 ,  G07C9/00309 ,  G07C2009/00357 ,  G07C2009/00388 ,  G07C2009/00769 ,  G07C2209/63 ,  H01Q1/3283

Abstract: A smart entry system that releases a lock of an opening/closing body includes: a transmission unit that transmits a call signal to a mobile key by wireless communication; a reception unit that receives a response signal from the mobile key responding to the call signal; and a control unit that outputs a call signal transmission command to the transmission unit, performs authentication of the response signal when the reception unit receives the response signal, and outputs a command for unlocking the opening/closing body based on a result of the authentication. The call signal is transmitted by a polling system. The control unit includes an output strength setting unit that changes and sets an output strength of the call signal.