Vehicle and control method of vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorYu NAGATA
Life of this patent
Estimating the term…
Abstract
A vehicle includes: a plurality of control devices; and a DCM configured to wirelessly receive data from outside, the data being used to update programs stored in the control devices. A subsidiary ECU has a storage area in which a current program is stored. A master ECU has a free space in which the current program of the subsidiary ECU is storable. A central ECU controls an updating process of the programs in the master ECU and the subsidiary ECU. In a case where the current program of the subsidiary ECU is to be updated, the central ECU controls the master ECU and the subsidiary ECU such that, prior to the updating of the current program, the master ECU and the subsidiary ECU make a backup of the current program in the free space of the master ECU.
Claims6
A vehicle comprising:
- a plurality of control devices;
- and
- a communications device configured to wirelessly receive data from outside, the data being used to update programs stored in the control devices, wherein:
- the control devices include
- a first control device having a storage area in which a current program is stored,
- a second control device having a free space in which the current program is storable, and
- a third control device configured to control an updating process of the programs in the first and second control devices;
- and
- in a case where the current program stored in the storage area of the first control device is to be updated, the third control device controls the first and second control devices such that, prior to updating of the current program, the first and second control devices make a backup of the current program in the free space of the second control device.
A control method of a vehicle configured to wirelessly receive data from outside, the data being used to update programs stored in a plurality of control devices, the control devices including
- a first control device having a storage area in which a current program is stored, and
- a second control device having a free space in which the current program is storable, the control method comprising a step of, in a case where the current program stored in the storage area of the first control device is to be updated, making a backup of the current program in the free space of the second control device prior to updating of the current program.
Dependencies are inferred from the claim text.