Patent ID: 9038132
Filing Date: 2015-05-19
Classification: G06F,H04L

Abstract:
1. A bus monitoring security device connected to a bus, which includes a tool side bus having a tool connection terminal and an Electronic Control Unit (ECU) side bus, wherein the ECU side bus is coupled with the ECU, and the tool side bus is coupled with a legal operation tool capable of communicating with the ECU via the tool connection terminal, and wherein the tool side bus and the ECU side bus are separately coupled with the bus monitoring security device, the bus monitoring security device comprising: a controller determining whether an illegal operation tool accessing the ECU is connected to the ECU side bus, based on data reception from the ECU side bus and data reception from the tool side bus, and restricting transmission and reception of data between the illegal operation tool and the ECU when the controller detects that data is received from only the ECU side bus so that the controller determines that the illegal operation tool is connected to the ECU side bus, wherein the controller does not restrict transmission and reception of data between the legal o ration tool and the ECU when the controller determines that the fetal operation tool is connected to the tool side bus.