US 11,989,546 B2
Vehicle electronic control system, vehicle master device, and rewrite instruction program product under specific mode
Yuzo Harata, Kariya (JP); and Kazuhiro Uehara, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Feb. 23, 2022, as Appl. No. 17/678,814.
Application 17/678,814 is a continuation of application No. PCT/JP2020/032047, filed on Aug. 25, 2020.
Claims priority of application No. 2019-155685 (JP), filed on Aug. 28, 2019.
Prior Publication US 2022/0179644 A1, Jun. 9, 2022
Int. Cl. G06F 8/65 (2018.01); B60R 16/02 (2006.01)
CPC G06F 8/65 (2013.01) [B60R 16/02 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A vehicle electronic control system, comprising:
a vehicle master device that is configured to distribute update data to a rewrite target electronic control unit (ECU) and to instruct the rewrite target ECU to write the update data;
and an electronic control device that is configured to rewrite, as the rewrite target ECU, a program by writing the update data received from the vehicle master device in a non-volatile memory, wherein
incomplete provisional software is written in a write area of the non-volatile memory in the rewrite target ECU,
the vehicle master device is configured to instruct the rewrite target ECU in a regular mode during which a user of a vehicle conducts an operation related to a program update at the vehicle,
the vehicle master device includes:
a specific mode determination unit that is configured to determine whether a specific mode during which (i) an operator of a dealer or a factory conducts an operation related to the program update or (ii) the program update is performed at the dealer or the factory is set; and
a rewrite instruction unit that is configured to instruct the rewrite target ECU to write the update data under the specific mode when the specific mode determination unit determines that the specific mode is set.