公开(公告)号：US20200233072A1

公开(公告)日：2020-07-23

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

IPC: G01S11/06 ,  H01Q1/32 ,  B60R25/10

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.

公开(公告)号：US20210168563A1

公开(公告)日：2021-06-03

申请号：US17168522

申请日：2021-02-05

Applicant: DENSO CORPORATION

Inventor： Kenichiro SANJI ,  Taichi YAMAGUCHI ,  Kazunari NAKAMURA ,  Takashi SHINODA

IPC: H04W4/029 ,  H04W4/40 ,  G06K9/00

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.