초록 ▼

A diagnosis system conducts diagnosis with data read out of an electronic control unit with a communications protocol installed in a vehicle. The system has an integrated circuit to be an communications interface suitable for the protocol. The circuit can be made suitable for any communications prot

A diagnosis system conducts diagnosis with data read out of an electronic control unit with a communications protocol installed in a vehicle. The system has an integrated circuit to be an communications interface suitable for the protocol. The circuit can be made suitable for any communications protocol by reprogramming logical functions of the circuit with design information. Instead of such circuit, the system may have a main processor and a subprocessor. On one hand, the main processor conducts virtual data communication with the control unit for diagnosis. On the other hand, the subprocessor executes a communications processing program suitable for the protocol to have data communication with the control unit. The subprocessor receives data from the main processor and transfers the data to the control unit and vice versa for the virtual data communication.

대표청구항 ▼

[ What is claimed is:] [1.] A diagnosis device removably connectable to an electronic control unit installed in a motor vehicle for data communication, the electronic control unit having a communication protocol, the diagnosis device comprising:a main processor provided for issuing a command directe

[ What is claimed is:] [1.] A diagnosis device removably connectable to an electronic control unit installed in a motor vehicle for data communication, the electronic control unit having a communication protocol, the diagnosis device comprising:a main processor provided for issuing a command directed to the electronic control unit and processing data transmitted from the electronic control unit in response to the command; anda field programmable gate array provided between the main processor and the electronic control unit, the field programmable gate array being reprogrammable so as to make communication between the main processor and the electronic control unit possible under the communication protocol of the electronic control unit,wherein the field programmable gate array is a communication interface with logical functions being reprogrammable on board by transmitted design data to make the communication interface applicable to the communication protocol of the electronic control unit, thereby enabling the diagnosis device to diagnose electronic control units having different communication protocols.