Patent ID: 11886857
Assignee: DENSO CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  B  H | IPC B  G  H

Claim 6:
7. A specification data generation method for generating specification data that is transmitted to an update target electronic control unit (ECU) together with update data to be written in the update target ECU that is a target ECU for a data update among a plurality of ECUs mounted in a vehicle, the method comprising:
generating the specification data including a device type of the update target ECU, an attribute of the update target ECU, update data-related information for the update target ECU, and information indicative of a rewrite environment related to the data update for the update target ECU; and
when the update target ECU are a plurality of update target ECUs, generating the specification data for the plurality of target update ECUs as one file, wherein
the method further comprises generating the specification data including, as the attribute of each of the plurality of update target ECUs, information related to a connection power supply of each of the plurality of update target ECUs or information related to a memory of each of the plurality of update target ECUs,
the information related to the connection power supply is information indicating that a power supply connected to each of the plurality of update target ECUs is one of a battery power supply, an accessory power supply, or an ignition power supply, and
the information related to the memory is information indicating that a memory structure of each of the plurality of update target ECUs is a single-bank memory or a double-bank memory.