Vehicle control apparatus

Patent metadata

Field	Value
Publication number	US-2021206348-A1
Application number	US-202117208217-A
Country	US
Kind code	A1
Filing date	Mar 22, 2021
Priority date	Sep 25, 2018
Publication date	Jul 8, 2021
Grant date	—

Abstract

A vehicle control apparatus is mounted on a vehicle to perform wireless communication with a portable terminal. The vehicle control apparatus includes a first processor and a second processor. The first processor execute a first process to determine whether or not a wireless signal is a regular wireless signal transmitted from the portable terminal. The second processor executes a second process including an authentication of the portable terminal in response to the received wireless signal being determined to be the regular wireless signal, and does not execute the second process in response to the received wireless signal being determined to be not the regular wireless signal. Herein, a power consumption when the first processor executes the first process is smaller than a power consumption when the second processor executes the second process.

First claim

What is claimed is:

1 . A vehicle control apparatus mounted on a vehicle to perform wireless communication with a portable terminal carried by a user of the vehicle, and control at least a part of functions of the vehicle according to an instruction from the portable terminal, the vehicle control apparatus comprising:
a first processor configured to execute a first process including a determination process configured to determine whether or not a wireless signal received by an antenna mounted on the vehicle is a regular wireless signal transmitted from the portable terminal; and a second processor configured to
execute a second process including an authentication of the portable terminal in response to the received wireless signal being determined to be the regular wireless signal due to the first process being executed by the first processor, and
not execute the second process in response to the received wireless signal being determined to be not the regular wireless signal due to the first process being executed by the first processor,
wherein: a power consumption when the first processor executes the first process is smaller than a power consumption when the second processor executes the second process.

2 . The vehicle control apparatus according to claim 1 , further comprising:
a storage configured to previously store vehicle-related information on the vehicle, wherein the authentication includes a process, in which: vehicle-related information included in the received wireless signal is compared with the vehicle-related information stored in the storage to obtain a difference; and in response to the difference being not within a predetermined range, it is determined that the authentication of the portable terminal is unsuccessful, and in response to the difference being within the predetermined range, it is determined that the authentication of the portable terminal is successful.

3 . The vehicle control apparatus according to claim 1 , wherein:
the first processor is configured by an ASIC (Application Specific Integrated Circuit); and the second processor is configured by a CPU (Central Processing Unit).

4 . The vehicle control apparatus according to claim 1 , further comprising:
an ASIC (Application Specific Integrated Circuit) and a CPU (Central Processing Unit), wherein: the first processor is configured by the ASIC and the CPU; the second processor is configured by the CPU, wherein: the first process includes
(i) the determination process executed by the ASIC for each predetermined first bit width including a predetermined first number of bits, and
(ii) the determination process executed by the CPU in a low speed mode for each predetermined second bit width including a predetermined second number of bits larger than the predetermined first number of bits included in the first bit width; and
the second process includes the authentication executed by the CPU, by using a data indicated by the received wireless signal, in a high speed mode needing a power consumption larger than a power consumption needed by the low speed mode.

Assignees

• Denso Corp

Inventors

• Umegaki Nobuo

Classifications

• B60R25/245 Primary

  where the antenna reception area plays a role · CPC title

• G07C9/00309 Primary

  operated with bidirectional data transmission between data carrier and locks · CPC title

• B60R25/24

  using electronic identifiers containing a code not memorised by the user · CPC title

• B60R25/40

  Features of the power supply for the anti-theft system, e.g. anti-theft batteries, back-up power supply or means to save battery power · CPC title

• G07C2209/63

  Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle · CPC title