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公开(公告)号：US11630194B2
公开(公告)日：2023-04-18
申请号：US16843719
申请日：2020-04-08
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Hidenori Osai , Kenichiro Sanji , Taichi Yamaguchi , Kazunari Nakamura , Munenori Matsumoto , Takashi Shinoda
Abstract: A position determination system a determines whether a mobile terminal is present outside a vehicle compartment based on a reception strength of a radio signal transmitted from the mobile terminal through a vehicle interior antenna and a reception strength of a radio signal transmitted from the mobile terminal through a vehicle exterior antenna, and the vehicle exterior antenna is configured to be disposed in a predetermined region in a vicinity of a window of a vehicle in an outer surface portion of a vehicle.
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公开(公告)号：US11388556B2
公开(公告)日：2022-07-12
申请号：US17168522
申请日：2021-02-05
Applicant: DENSO CORPORATION
Inventor： Kenichiro Sanji , Taichi Yamaguchi , Kazunari Nakamura , Takashi Shinoda
Abstract: A position determination system determines a position of a mobile terminal relative to a vehicle by a wireless communication. The position determination system includes: a communication device disposed in a vehicle compartment and configured to receive a wireless signal transmitted from the mobile terminal and detect a reception strength of the received wireless signal. The position determination system is configured to: determine whether the mobile terminal is existing in the vehicle compartment; estimate an amount of absorbers that exists in the vehicle compartment and may absorb radio waves having a frequency used for the wireless communication; adjust an inside determination value which is used as a threshold for determining that the mobile terminal is existing in the vehicle compartment; and determine that the mobile terminal is existing in the vehicle compartment in response to the inside device strength being equal to or greater than the inside determination value.
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