公开(公告)号：US11316926B2

公开(公告)日：2022-04-26

申请号：US15842333

申请日：2017-12-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshifumi Omori ,  Yoshiro Hirata

IPC: H04L29/08 ,  B60W50/00 ,  B60L15/20 ,  H04L12/40 ,  H04L67/125 ,  H04L67/12

Abstract: An in-vehicle network system includes a plurality of controllers configured to perform control of a vehicle, a plurality of transfer paths connected to the controllers, a relay device configured to relay data between the transfer paths, the relay device being connected to the transfer paths, a vehicle state detection unit configured to detect a predetermined state of the vehicle, a first specifying unit configured to specify the controller that transmits data with a low transmission priority in the predetermined state detected by the vehicle state detection unit or a transfer path other than a transfer path that transfers data related to the predetermined state detected by the vehicle state detection unit, and a first communication controller configured to cause the controller specified by the first specifying unit to suppress communication of data or suppress communication of data to the transfer path specified by the first specifying unit.

公开(公告)号：US11050648B2

公开(公告)日：2021-06-29

申请号：US16595953

申请日：2019-10-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshifumi Omori ,  Hiroya Ando ,  Yoko Okubo ,  Kengo Hayashizaki

IPC: H04L12/26 ,  H04L29/08 ,  H04L5/16

Abstract: A communication system including two communication nodes communicably connected in a full duplex communication mode via the same communication line is provided. Each of the two communication nodes includes a first processing unit configured to be able to send a predetermined monitoring frame to another communication node at predetermined intervals and to receive the predetermined monitoring frame from the other communication node at predetermined intervals; a second processing unit configured to detect a monitoring frame missing condition wherein the monitoring frame is received from the other communication node; and a third processing unit configured to switch communication with the other communication node from the full duplex communication mode to a half duplex communication mode when a predetermined condition is satisfied during communication in the full duplex communication mode wherein the predetermined condition includes a condition that the second processing unit detects the monitoring frame missing condition.