Toyota Jidosha Kabushiki Kaisha

Sumitomo Electric Industries, Limited

Sumitomo Wiring Systems, Limited

Autonetworks Technologies, Limited

Masashi Amesara

Shu Ishizuka

Toshio Kawamura

Hiroya Ando

Yutaka Ueda

Taichi Matsumura

Yoshifumi Ohmori

Toshio Shimada

Tomomi Kawamura

Takeshi Hagihara

Tatsuya Izumi

Hirofumi Urayama

Hideki Goto

Darmawan Go

Hideki Maeda

Hisashi Furukawa

Akihito Iwata

Yasuhiro Yamasaki

Tadashi Matsumoto

Yoshiroh Hirata

Yoshiro Hirata

Yosuke Shimizu

Kengo Hayashizaki

Masahide Ozaki

Hidetaka Nakane

Processing circuitry of a program rewriting device is configured to create a transfer queue for each bus by grouping update data for each electronic control unit, assign threads to transfer queues one by one, starting with a transfer queue with a relatively large transfer data amount, perform parallel transfer of the update data of the transfer queues to the gateway device by using the assigned threads, each time transfer of a piece of the update data is completed, select a transfer queue having a largest transfer data amount from among the transfer queue in which the transfer of the update data is completed and transfer queues to which the threads have not been assigned and in which transfer of the update data is suspended, and continue the parallel transfer by assigning, to the selected transfer queue, the thread assigned to the transfer queue for which the transfer has been completed.

Program rewriting device and program rewriting method

A plurality of communication units of an on-board relay device include a remote communication unit to which a communication device outside a vehicle for communicating with an external server is connected, and a local communication unit to which a diagnostic device is connected, and a control unit of the on-board relay device performs lower layer side control for relay based on a lower side layered protocol in communication, and upper layer side control for relay based on an upper side layered protocol rather than the lower side layered protocol, and performs adjustment processing with respect to a conflict of a plurality of maintenance processings by the upper layer side control when information relevant to the plurality of maintenance processings with respect to any one on-board ECU of a plurality of on-board ECUs is input through the local communication unit and the remote communication unit.

On-board relay device, information processing method, and program

A switch device includes: a plurality of communication ports; a switch unit configured to relay a frame, which has been transmitted from a function unit and to which information including an ID of a VLAN and priority information is added, to another function unit via a communication port, according to the priority information; and a duplication unit configured to, when the diagnosis device is connected to another switch device, duplicate the frame to be relayed via a designated communication port, thereby generating a duplicate frame for diagnosis. The duplication unit is able to set the priority information to be added to the duplicate frame for diagnosis, separately from the priority information to be added to the frame as an original. The switch unit outputs the duplicate frame for diagnosis, from a communication port corresponding to the other switch device, according to the priority information set by the duplication unit.

Switch device, in-vehicle communication system, and communication method

A switch device includes a plurality of communication ports; a switch unit configured to relay a frame, which has been transmitted from a function unit and to which information including an ID of a VLAN is added, to another function unit via a communication port; and a duplication unit configured to, when the diagnosis device is connected to another switch device, duplicate the frame to be relayed via a designated communication port among the plurality of communication ports, and generate a duplicate frame for diagnosis that is a frame obtained by adding, to a duplicate frame obtained through the duplication, specific information indicating that the duplicate frame for diagnosis should be transmitted to the diagnosis device. The switch unit outputs the duplicate frame for diagnosis generated by the duplication unit from a communication port corresponding to the other switch device.

An in-vehicle network system deployed in a vehicle includes a plurality of first nodes configured to perform an operation relevant to a first function in the vehicle, a second node configured to perform an operation relevant to a second function different from the first function in the vehicle; and a relay device configured to relay communication between the first nodes and the second node. The relay device is configured to start relay of communication between the first nodes earlier than the relay of communication between the first node and the second node at a time of startup.

In-vehicle network system, relay device, and method of controlling in-vehicle network system

An electronic control unit that monitors a subject electronic control unit that is different from the electronic control unit and is connected to a network includes a transmitting unit that transmits a monitoring packet to the subject electronic control unit, an estimating unit that estimates a state of the subject electronic control unit, based on a reply packet transmitted from the subject electronic control unit in response to the monitoring packet, and a monitoring unit that monitors the subject electronic control unit, based on a monitoring policy selected according to a combination of the state of the subject electronic control unit estimated by the estimating unit, and the state of the electronic control unit.

Electronic control unit, monitoring method, and non-transitory computer readable medium storing program for monitoring a subject electronic control unit connected to a network

An in-vehicle network system includes a plurality of relay devices that is connected to control devices of a vehicle, and communicates with each other and is configured such that each of a plurality of request devices that transmits a response request to the control device is connected to any one of the relay devices, a storage unit that stores a priority of the request devices, a master setter that sets, as the master, the relay device to which the request device having the highest priority has been connected among the relay devices to which any one of the request devices has been connected, and an arbitrator that performs arbitration to prioritize a response request from the request device having the highest priority when the response requests are transmitted from at least two of the request devices when the relay device in which the arbitrator is included is the master.

In-vehicle network system

An electronic control unit mounted on a vehicle includes a processor configured to: detect a connection request from an outside device; determine, in response to the connection request, whether or not a start condition for starting a connection authentication process is satisfied, the connection authentication process being a process for determining propriety of the connection request from the outside device; control a communication state between the outside device and the electronic control unit such that the communication state becomes a linkup state when the start condition is satisfied; and start the connection authentication process when the communication state is the linkup state.

Electronic control unit and method for connection authentication

An in-vehicle network system includes a plurality of controllers; a plurality of communication lines connected to the controllers, respectively, a relay device connected to the controllers via the communication lines, and a retention determiner configured to determine whether retention of data occurs in the relay device. The relay device is configured to relay data between the communication lines, and configured to preferentially relay data having a priority equal to or higher than a predetermined priority such that the data reaches the controller that is a transmission destination among the controllers within a first predetermined time when the retention determiner determines that the retention occurs.

An in-vehicle network system includes a plurality of first controllers; a plurality of first communication lines, the first communication lines being respectively connected to the first controllers; a connector that connects an external device or a wireless communication device; a connection communication line that is connected to the connector; and a first relay device that relays between the first communication lines and the connection communication line. The first relay device is configured to determine whether a security level in data communication between the first controllers is increased according to a type of the external device or a communication state of the wireless communication device in a state in which the external device or the wireless communication device is connected to the connector, and the first relay device is configured to increase the security level when the first relay device determines that the security level is increased.

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Toyota, Japan

Masashi Amesara