Bus monitoring security device and bus monitoring security system
First Claim
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.
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Accused Products
Abstract
A bus monitoring security device is connected to a bus, which includes a tool side bus having a tool connection terminal and an ECU side bus. The ECU side bus is coupled with an ECU, and the tool side bus is coupled with a tool capable of communicating with the ECU via the tool connection terminal. The tool side bus and the ECU side bus are separately coupled with the bus monitoring security device. The bus monitoring security device includes: a controller for determining whether the tool being to access the ECU is connected to the ECU side bus, and for restricting transmission and reception of data between the tool and the ECU when the controller determines that the tool is connected to the ECU side bus.
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Citations
9 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A bus monitoring security system comprising:
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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; and a deputy monitoring device determining whether the bus monitoring security device is disconnected from the bus, wherein, when the deputy monitoring device determines that the bus monitoring security device is disconnected from the bus, the deputy monitoring device restricts transmission and reception of data between the illegal operation tool and the ECU as an access object, and wherein the controller does not restrict transmission and reception of data between the legal operation tool and the ECU when the controller determines that the legal operation tool is connected to the tool side bus.
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Specification