Sumitomo Electric Industries, Limited

Sumitomo Wiring Systems, Limited

Autonetworks Technologies, Limited

Yuya Tanaka

Takeshi Hagihara

Akihito Iwata

Yasuhiro Yabuuchi

Koichi Takayama

An on-vehicle transmission system includes: a path part configured to transmit a radio signal received from the antenna side, to the on-vehicle-device side; an on-vehicle-device-side circuit unit including a plurality of wireless circuits configured to receive radio signals in frequency bands different from each other; and a power supply circuit configured to supply power from the on-vehicle-device side to a circuit on the antenna side via the path part. The plurality of wireless circuits are connected in series via a transmission line configured to transmit a radio signal, and are respectively connected to the plurality of on-vehicle devices via the transmission line configured to transmit a radio signal. The on-vehicle-device-side circuit unit splits the radio signal received from the path part and provides resultant radio signals to the respective wireless circuits.

In-vehicle transmission system

An on-vehicle communication system mounted on a vehicle is provided with a master function unit and a plurality of slave function units. The plurality of slave function units are able to transmit uplink communication signals to the master function unit via at least a common optical fiber.

On-vehicle communication system

This switch device is mounted on a vehicle, and comprises: a switch unit for relaying communication data communicated between a plurality of communication devices; a buffer for holding the communication data to be relayed; and a control unit for transmitting stop request to at least one communication device of the plurality of communication devices if communication data to be transmitted to a communication device in which abnormality has been detected is held in the buffer, the stop request which requests for stopping transmission of communication data to the switch device and for holding of communication data to be transmitted to the switch device.

Switch device and communication control method

An extra-vehicular communication device installed in a vehicle and capable of communicating with an external device outside the vehicle includes: a control unit; and a storage unit that has a tamper-resistant secure area and stores, in the secure area, at least one of communication destination information regarding a communication destination outside the vehicle and emergency operation information regarding a predetermined operation in an emergency. When unauthorized access in in-vehicle equipment installed in the vehicle is detected, the control unit performs at least one of control of communication with the communication destination by use of the communication destination information and processing based on the emergency operation information.

Growing community of inventors

Osaka, Japan

Yuya Tanaka