公开(公告)号：US10153825B2

公开(公告)日：2018-12-11

申请号：US15117910

申请日：2015-02-06

Applicant: DENSO CORPORATION

Inventor： Tomoko Kodama ,  Takeshi Enosaki ,  Hiroto Tanaka

IPC: H04B7/155 ,  H04W4/04 ,  H04L29/08 ,  H04L12/407

Abstract: A vehicle-mounted control device, which communicates with a vehicle-mounted node via a common bus and follows a communication protocol that the lower the priority of a data frame output from the vehicle-mounted node, the longer a waiting time, includes: an arbitration device that suspends transmission of the transmission target frame to the bus when the priority of a transmission target frame is lower than an output data frame from the vehicle-mounted node, and continues transmission of the transmission target frame to the bus when the priority of the transmission target frame is higher than the output data frame; and a change device that changes the priority of the transmission target frame to be the highest of all data frames when the transmission of the transmission target frame is suspended for a prescribed time or longer as a result of arbitration control by the arbitration device.

公开(公告)号：US10693676B2

公开(公告)日：2020-06-23

申请号：US16293978

申请日：2019-03-06

Applicant: DENSO CORPORATION

Inventor： Hiroto Tanaka ,  Mitsutoshi Kato ,  Katsuhiko Furuta

IPC: H04L12/46 ,  G06F13/40 ,  H04L12/12 ,  H04L12/40

Abstract: A relay device may include a plurality of communication circuits and a state control portion. The relay device may relay the data among a plurality of buses, each of which connecting one or more nodes. The plurality of communication circuits may perform transmission and reception of the data, and transition among a plurality of states including a transmission enabled state and a transmission disabled state. The plurality of communication circuits may be connected to the plurality of buses in one to one manner. The state control portion may cause a specific communication circuit to transition from the transmission enabled state to the transmission disabled state when a relay transition time has elapsed from an occurrence of predetermined event. The specific communication circuit may represent at least one of the plurality of communication circuits to which at least one of the plurality of buses connecting the specific node is connected.