公开(公告)号：US20180370487A1

公开(公告)日：2018-12-27

申请号：US15780243

申请日：2016-11-21

申请人： DENSO CORPORATION

发明人： Ryusuke ISHIKAWA

IPC分类号： B60R25/24 ,  B60R25/01 ,  B60R25/10 ,  B60R25/34 ,  H04W12/06 ,  H04W84/10

摘要： Provided is an electronic key system for a vehicle. The electronic key system for a vehicle includes an in-vehicle device and a portable device and performs a predetermined control process on a vehicle on the basis of verification successfully made between the in-vehicle device and the portable device. When receiving a verification signal, the portable device transmits a response signal in accordance with the verification signal. When an operation detection unit detects a user operation, the portable device transmits an instruction signal for controlling a state of locking of a door of the vehicle. An output level of the response signal from the portable device is lower than an output level of the instruction signal.

公开(公告)号：US20200346619A1

公开(公告)日：2020-11-05

申请号：US16936066

申请日：2020-07-22

申请人： DENSO CORPORATION

发明人： Ryusuke ISHIKAWA

IPC分类号： B60R25/40 ,  H04W4/40 ,  E05B81/80 ,  B60R25/24 ,  H02J7/00 ,  H02J7/02 ,  H02J50/12 ,  H02J50/80

摘要： A mobile device wirelessly communicates with a vehicle device. The mobile device includes a receiving unit, a response signal generation unit, a transmission unit, a charging unit, and a charge state determination unit. The receiving unit receives a response request signal transmitted from the vehicle device. The response signal generation unit generates a response signal in response to the response request signal. The transmission unit transmits the response signal. The charging unit charges a built-in battery with an electric power supplied wirelessly or through wire from a power supply device. The charge state determination unit determines whether the charging unit charges the built-in battery. The mobile device is configured not to transmit the response signal, in a situation where the charge state determination unit determines that the charging unit is charging the built-in battery.

公开(公告)号：US20170292291A1

公开(公告)日：2017-10-12

申请号：US15516919

申请日：2015-10-13

申请人： DENSO CORPORATION

发明人： Ryusuke ISHIKAWA ,  Nobuyoshi NAGAI ,  Koji UENO

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

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

摘要： 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.

公开(公告)号：US20230365102A1

公开(公告)日：2023-11-16

申请号：US18357841

申请日：2023-07-24

申请人： DENSO CORPORATION

发明人： Hiroya YAMAMOTO ,  Ryusuke ISHIKAWA ,  Kohei NIMURA

IPC分类号： B60R25/24 ,  G07C9/00

CPC分类号： B60R25/24 ,  G07C9/00309 ,  B60R2325/101 ,  G07C2009/00793 ,  G07C2009/00984 ,  G07C2209/08

摘要： An electronic key system installed in a vehicle includes: a first wireless communication controller performing transmission of a predetermined radio signal, as a verification signal, via a first wireless communication to confirm presence or absence of each of a first portable device and a second portable device each of which is usable as an electronic key of the vehicle; a second wireless communication controller periodically performing transmission/reception of the radio signal via second wireless communication to and from each of the first portable device and the second portable device upon transmitting/receiving the verification signal; and an integrity controller integrally controlling an operation of each of the first wireless communication controller and the second wireless communication controller.

公开(公告)号：US20190016302A1

公开(公告)日：2019-01-17

申请号：US16068918

申请日：2016-12-16

申请人： DENSO CORPORATION

发明人： Takashi SAIKI ,  Ryusuke ISHIKAWA

IPC分类号： B60R25/24

CPC分类号： B60R25/24 ,  E05B81/54 ,  G07C9/00309 ,  G07C2009/005 ,  G07C2209/63 ,  G08C17/02

摘要： An electronic key system includes an on-board device and an electronic key for wireless communication. The on-board device includes: a pattern determining unit sequentially changes and determines a variation pattern of the electromagnetic wave intensity of a measurement signal; a request signal generating unit generating a request signal to which the measurement signal is added; and an LF transmitter sequentially transmitting the request signal so that the variation pattern of the electromagnetic wave intensity of the measurement signal in the request signal is changed by the pattern determining unit. The electronic key includes: an LF receiver receiving the request signal; a measurement unit sequentially measuring the variation pattern; and a key transmitter transmitting a response signal to the on-board device. The on-board device further includes: an on-board device receiver receiving the response signal; and a verifying section establishing verification of the electronic key.