Vehicle information communication system

A vehicle information communication system, comprising:

• a vehicle device, mounted in a vehicle, that controls programs data rewrites for a plurality of electronic control units (ECU) of the vehicle, each of the ECUs including a memory configured to store program data;
• and
• a center device that generates specification data for use by the vehicle device when controlling the program data rewrites, wherein
• the center device includes:
• a storage unit that stores memory structure information for each of the ECUs, the memory structure information indicating whether a corresponding memory has a memory structure that supports Read While Write (RWW) operation defined as having a plurality of physically independent memory regions;
• a center computer programed to
• (i) read from the storage unit the memory structure information of at least one target ECU among the plurality of ECUs, the at least one target ECU being targets for a program data rewrite, and
• (ii) generate specification data including the memory structure information for each of the at least one target ECUs;
• and
• a center-device communication unit configured to wirelessly communicate the specification data generated by the center computer to the vehicle device, and
• the vehicle device includes:
• a vehicle-device communication unit configured to receive the specification data from the center-device communication unit;
• and
• a vehicle computer programmed to perform the program data rewrites of the at least one target ECU according to the memory structure information included in the specification data.