Patent ID: 11930021
Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An unauthorized frame detection device in an in-vehicle network system that includes a plurality of electronic control units and a plurality of networks, the plurality of electronic control units communicating via the unauthorized frame detection device through service-oriented communication, the unauthorized frame detection device comprising:
a plurality of communication ports corresponding to the plurality of networks, respectively;
a communication controller; and
an unauthorized frame detector, wherein
the plurality of communication ports are each connected to a predetermined network corresponding thereto among the plurality of networks and each include an interface for transmitting or receiving, via the predetermined network, a frame to or from an electronic control unit, among the plurality of electronic control units, that is connected to the predetermined network,
when a communication port among the plurality of communication ports receives a frame, the communication controller performs transfer control of causing the frame to be transmitted from another communication port, among the plurality of communication ports, other than the communication port that has received the frame, and
the unauthorized frame detector makes a determination as to whether an identifier of a service included in the frame, a type of the service included in the frame, and port information included in the frame match a permission rule set in advance and outputs a result of the determination, the type of the service indicating whether an electronic control unit, among the plurality of electronic units, that has transmitted the frame is to offer the service or receive the service, the port information serving to identify the communication port that has received the frame.