US 11,989,550 B2
Center device and in-vehicle electronic control device
Masaaki Abe, Kariya (JP); and Hideo Yoshimi, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Apr. 19, 2022, as Appl. No. 17/723,520.
Claims priority of application No. 2021-073377 (JP), filed on Apr. 23, 2021.
Prior Publication US 2022/0342660 A1, Oct. 27, 2022
Int. Cl. G06F 8/658 (2018.01); B60W 50/00 (2006.01); G06F 21/64 (2013.01)
CPC G06F 8/658 (2018.02) [B60W 50/00 (2013.01); G06F 21/64 (2013.01); B60W 2050/0083 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A center device configured to manage data written to a plurality of electronic control devices mounted in a vehicle, the center device comprising:
a vehicle information storage unit that stores identification information for each of the plurality of electronic control devices and information of software architecture of the each of the plurality of electronic control devices together with a type of the vehicle;
a hash value generation unit configured to, for the each of the plurality of electronic control devices that is an update target,
generate difference data that is a difference between update data and the data before being updated,
calculate a hash value of the difference data, and
store the calculated hash value in a hash value storage unit;
a package generation unit configured to generate distribution package for the update target using corresponding hash value stored in the hash value storage unit; and
a distribution unit configured to transmit the distribution package to the vehicle in which the plurality of electronic control devices are mounted, wherein
the package generation unit is configured to generate the distribution package that contains the hash value and does not contain the difference data, and
the distribution unit is configured to transmit the distribution package and the difference data separately.