Patent ID: 11900092
Assignee: DENSO CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  B  H | IPC B  G  H

Claim 0:
1. A distribution package generation method comprising:
generating specification data corresponding to update data to be written into a target device being a target of data update among a plurality of electronic control units mounted on a vehicle so that the specification data includes device type of the target device, an attribute of the target device, update data related information of the target device, and information indicating rewrite environment related to the data update of the target device; and
generating a distribution package including the update data and the specification data and storing the distribution package,
wherein
in cases where the target device is a plurality of target devices:
generating the specification data includes generating specification data for target devices as one file; and
generating the distribution package includes generating one distribution package including the update data for the target devices and the file,

the method further comprising:
in response to a request from the vehicle after generation of the distribution package is completed and update availability is notified to the vehicle, distributing the stored distribution package, wherein
the information indicating rewrite environment includes memory configuration information indicative of a memory configuration of a non-volatile memory mounted in each of the plurality of target devices, and at least one of self-retention power information indicating whether each of the plurality of target devices activates a self-retention power function, group information indicative of a group to which each of the plurality of target devices belongs, or order information indicative of an order in which installation is performed for the plurality of target devices to manage the data update for each of the plurality of target devices on a phase basis, wherein
the memory configuration information indicates whether each of the plurality of target devices has a single-bank memory or a double-bank memory,
the method further comprises:
allowing installation for the plurality of target devices only when the vehicle is parked if the memory configuration information indicates that each of the plurality of target devices has the single-bank memory, and
allowing installation for the plurality of target devices when the vehicle is parked or when the vehicle is traveling if the memory configuration information indicates that each of the plurality of target devices has the double-bank memory.