Patent ID: 11936500
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A network system comprising:
a plurality of first nodes configured to perform an operation relevant to a first function in a vehicle, the plurality of first nodes belonging to a first network;
a plurality of second nodes configured to perform an operation relevant to a second function different from the first function in the vehicle, the plurality of second nodes belonging to a second network different from the first network; and
a relay device configured to relay communication between a node in the first network and a node in the second network,
wherein, when the relay device starts up, a switch circuit in the relay device starts to relay the communication within the first network respectively based on a routing table stored before a microcomputer in the relay device starts to relay the communication from the first network to the second network by executing an application program that is stored,
wherein, the relay device includes a first relay unit and a second relay unit,
the second relay unit is configured to perform the relay of the communication between the first network and the second network using a function of performing the relay of the communication within the first network in the first relay unit,
the first relay unit is configured to start the relay of the communication within the first network regardless of a startup situation of the second relay unit,, the first relay unit is configured to perform the relay of the communication within the first network using hardware, the hardware including the switch unit, and
the second relay unit is configured to perform the relay of the communication between the first network and the second network using software, the software including the application program.