Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Hitachi, Ltd.

Samsung Electronics Co., Ltd.

Fumiharu Nakahara

Kenichi Kurosawa

Hidetoshi Teraoka

Shigeyuki Sudo

Yusuke Abe

Yukinori Asada

Yoshinori Chida

Kenichi Osada

Kohei Sakurai

Osamu Hasegawa

Yusuke Kogure

Koji Urawaki

Yoshiaki Umehara

Hajime Araki

Naoki Tsuji

Junichi Yoshida

A vehicle controller with improved usability related to updating of a control program is provided. The vehicle controller is capable of updating a stored control program, based on update contents provided by a writing device. The control program includes a control code, and control data that is referred to when the control code is executed. The vehicle controller includes a nonvolatile memory that allows a first memory area and a second memory area to be switched and used alternately, the first memory area and the second memory area each storing both the control code and the control data, and an updating request determining unit that determines whether an updating request from the writing device requests updating of both the control code and the control data or requests updating of the control data only. When determining that updating of the control data only is requested, the updating request determining unit writes received control data to any given memory area in which a currently active control program is stored.

Vehicle controller, updated program, program updating system, and writing device

A control apparatus includes a reception unit which receives distribution data which contains compressed update data and a header which includes information to designate any one of a plurality of update systems, a decompression unit which decompresses the update data from the distribution data received by the reception unit, and a restoration unit which restores a new program after updating according to an update system designated in the header using the update data decompressed by the decompression unit. The decompression unit switches a decompression method when the update data is decompressed on the basis of the update system designated in the header.

Control apparatus, program update system, and program update method

A software update device is connected to a control device and includes an update control unit executing an update process of causing software for the control device to transit from a non-updated state to a completely updated state, a recovery control information managing unit acquiring recovery control information, and a recovery control unit executing a recovery process of causing the software to transit to the completely updated state on a basis of the recovery control information in a case where an abnormality in the update process has prevented the software from transiting to the completely updated state.

Software update device, software update method, and software update system

The present invention realizes control program update even when the difference data is large. In the present invention, when updating the program, by controlling the amount of data to be received according to the capacity of the area of the vehicle control device storing the difference data, the vehicle control device sequentially performs restoration and update from the received partial data even if not all the difference data are stored.

Vehicle control device and program update system

A decompression and restoration unit, when differential data between a new execution program and a specific program is input, decompresses and restores the compressed specific program and rewrites the execution program as the specific program. A differential restoration unit differentially restores the new execution program from the differential data and the specific program and rewrites the specific program as the new execution program. A differential restoration unit that, when differential data between a new execution program and a specific program is input, differentially restores the new execution program from the differential data and the execution program in a memory unit and rewrites the execution program in the memory unit as the new execution program. The decompression and restoration unit decompresses and restores the compressed specific program and rewrites the new execution program as the specific program.

Car onboard control device and program updating software

Provided are an on-vehicle control device and an on-vehicle control device information update system that are capable of identifying a subject vehicle by a simple means, while suppressing power consumption, when on-vehicle device information is automatically updated. This on-vehicle control device receives a vehicle response request message from a data server in a power-saving mode in which only a vehicle external communication unit can operate; checks vehicle identification information and on-vehicle control device information that are subject to change and are stored in the message, and vehicle identification information and on-vehicle control device information stored in advance in the vehicle external communication unit and responds with the results to the data server.

On-vehicle control device and on-vehicle control device information update system

The present invention provides a vehicle control device and a program update system capable of effectively suppressing erroneous execution and update of a plurality of control programs stored in a nonvolatile memory. A vehicle control device according to the present invention has a flash ROM and an operation unit. In addition, the flash ROM has a first area and a second area which store a control program executable by the operation unit and a plurality of management data areas which store management data including current program area information representing one storage area of the first area and the second area as a storage area storing a current control program to be executed by the operation unit.

An electric control device for vehicles capable of updating an old program stored in a storage unit with a new program. A reception unit sequentially receives a plurality of pieces of division data acquired by dividing difference data, which includes a data section based on a difference between the old program and the new program and a command section used for generating the new program by reflecting the data section on the old program, or difference compression data acquired by compressing the difference data for every predetermined data length A restoration process restores the new program based on each division data received by the reception unit and the old program. If at least a part of the command section and the data section is not included in the division data received by the reception unit, the restoration unit suspends the restoration process and waits for reception of next division data.

Electric control device for vehicles, program updating method, and server apparatus

The present invention provides a vehicle-mounted control device, a program writing device, a program generating device, and a program, which are capable of quickly and easily carrying out reprogramming. An ECUis provided with: a microcomputer, an SRAM, a flash memory, and a communication device. The flash memoryis configured from a plurality of blocks and stores older versions of the program. The communication devicereceives (S) a frame including block data, the type of the block data, and an address of a block in which the block data is to be written. The microcomputerrestores (S) a new program from the block data in the SRAMaccording to the type of the block data (S, S) and writes (S, S) one piece of the restored new program in a block corresponding to the address.

Vehicle-mounted control device, program writing device, program generating device and program

Provided is a software updating apparatus that can flexibly respond to various situations, including update capacity and use cases of each ECU, in a case of updating control information of a plurality of ECUs. Update control information necessary for update processing, including update data to be newly applied to an ECU, is received from a server and control of the update processing is performed based on the received update control information.

Software updating apparatus and software updating method

Provided is an in-vehicle control device which makes it possible to achieve restoration processing of differential reprogramming even in an in-vehicle control device using a microcomputer with a built-in flash memory using a small amount of RAM and composed of large blocks, and is capable of restoring a new program in a short time by decreasing the size of differential data even for a new program to which major changes have been made. Provided is an in-vehicle control device capable of updating a program on the basis of update content provided from an update tool, the in-vehicle control device being provided with a first memory provided with a plurality of blocks for storing programs, and a second memory. When updating a program, differential data of the program and an update program are stored in the second memory, an update program for a block to be updated among the plurality of blocks is recreated in another block which is different from the block to be updated using the differential data and an old program, and the update program which has been recreated in the other block is written in the block to be updated.

In-vehicle control device, program update system, and program update software

Provided is a program writing device that reliably performs an updating process of data by means of a control program or the like in a safe manner and without inconveniencing the owner of a vehicle or a driver using the vehicle. The program writing device is provided with a plurality of vehicle-mounted control devices, which control the operation of apparatuses mounted in the vehicle by means of control programs, and a relay device that receives updated program data including an updated program, updated data, or the like for the vehicle-mounted devices and transmitted from an external center, and stores the result in memory, the vehicle-mounted control devices and relay device being connected via a vehicle-mounted network, wherein the relay device is provided with a battery voltage checking circuit, an unloaded and a load-connected battery voltage check are performed by the battery voltage check circuit before writing the updated program or updated data to the vehicle-mounted control devices, and writing is executed when the battery voltage when unloaded is at least a first reference voltage or when connected to a load is at least a second reference voltage, and in other cases writing is not executed.

Vehicle-mounted program writing device

Provided is a vehicle control device with which it is possible to reduce the time required to rewrite a control program. In the vehicle control device according to the present invention, after an updated version of the control program has been stored in a second storage unit, a first storage unit is initialized in advance before the instruction to update the control program has been executed.

Vehicle control device, reprogramming system

A vehicle-mounted program writing device includes a plurality of vehicle-mounted control devices and a relay device. If a write start command button is turned on when a memory storage completion indicator is in an on state, the relay device starts the writing of the updated programs and the updated data to the vehicle-mounted control devices. If the memory storage completion indicator is in off state, the relay device does not execute the writing of the updated programs and the updated data even when the write start command button is turned on.

Growing community of inventors

Hitachinaka, Japan

Fumiharu Nakahara