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|1. (WO2017038188) GATEWAY DEVICE AND COMPUTING DEVICE|
|Applicants:||HITACHI AUTOMOTIVE SYSTEMS, LTD.
|Title:||GATEWAY DEVICE AND COMPUTING DEVICE|
A gateway device connected to a higher-level network that uses a predetermined communication protocol, and to two or more lower-level networks that use a communication protocol different from that of the higher-level network, wherein higher-level data transmitted and received in the higher-level network comprises a header and a payload. The gateway device is provided with: a plurality of communication ports that are connected to the respective lower-level networks and receive lower-level data transmitted and received in the lower-level networks; a storage unit that associates and stores each of the plurality of communication ports and a source identifier; and a control unit that generates and transmits the higher-level data to the higher-level network, wherein the payload of the higher-level data generated by the control unit includes at least part of the lower-level data received by the communication port, and the header of the higher-level data generated by the control unit includes the source identifier associated with this communication port.