Updating of a program is realized even with a small-sized temporary storage area. A program update system distributes an update program from an update program distributing unit to a vehicle control device. The update program distributing unit encrypts an update program by a predetermined unit of encryption, and transmits the update program, which has been encrypted, by a predetermined unit of transfer to the vehicle control device to be updated, the vehicle control device decrypts the received update program by the unit of encryption, and stores the update program, which has been decrypted, by a predetermined unit of writing in a program storage unit, and the unit of writing is an integral multiple of the unit of encryption.


    Access

    Download


    Export, share and cite



    Title :

    Program update system, vehicle control device, and program update method


    Contributors:

    Publication date :

    2024-09-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



    PROGRAM UPDATE SYSTEM, VEHICLE CONTROL DEVICE, AND PROGRAM UPDATE METHOD

    KOGURE YUSUKE / NOKAIDO TAKAAKI / YOSHIMURA KENTARO | European Patent Office | 2021

    Free access

    VEHICLE CONTROL DEVICE, PROGRAM UPDATE METHOD, AND PROGRAM UPDATE SYSTEM

    ISHIKAWA TOMOYASU / ARIGA TAKANORI | European Patent Office | 2021

    Free access


    PROGRAM UPDATE CONTROL DEVICE, VEHICLE MANAGEMENT SYSTEM, AND PROGRAM UPDATE CONTROL METHOD

    HIRATA TOMOYUKI / TATSUMI SHOGO / NAKAMURA NOBUHIKO | European Patent Office | 2020

    Free access