Electronic control unit for vehicle and method of executing program
AssigneeHitachi Automotive Systems, Ltd.
InventorsYusuke Abe, Koji Yuasa, Toshihisa Arai
Life of this patent
Estimating the term…
Abstract
An electronic control unit for vehicle capable of receiving a program by communication expands the received program in a volatile memory and executes the expanded program. As an example of this program, there is a program for changing a communication environment for communicating with another unit.
Claims12
An electronic control unit for a vehicle, configured to receive a first program from a writing tool by communication, comprising a processor and a nonvolatile memory,
- wherein a second program, which is stored in the nonvolatile memory, expands the received first program in a volatile memory and executes the expanded first program;
- wherein the expanded first program changes a communication environment, including at least one of communication speed and encryption scheme, for communication between the electronic control unit and the writing tool that is a transfer source of the first program, to match a communication environment for communication between the electronic control unit and another unit;
- and
- wherein the electronic control unit is removably connected to the writing tool through a communication line, and the electronic control unit is configured to turn on when connected to the writing tool and configured to turn off when disconnected from the writing tool.
A method of executing a first program by an electronic control unit for a vehicle configured to receive the first program from a writing tool by communication, the method comprising the steps of:
- expanding, by a second program stored in a nonvolatile memory, the received first program in a volatile memory;
- and
- executing the expanded first program;
- wherein the expanded first program changes a communication environment, including at least one of communication speed and encryption scheme, for communication between the electronic control unit and the writing tool that is a transfer source of the first program, to match a communication environment for communication between the electronic control unit and another unit;
- and
- wherein the electronic control unit is removably connected to the writing tool through a communication line, and the electronic control unit is configured to turn on when connected to the writing tool and configured to turn off when disconnected from the writing tool.
Dependencies are inferred from the claim text.