Vehicular communication device exchanging reception and...

Details Vehicular communication device exchanging reception and... Vehicular communication device exchanging reception and...

2003-02-27

2008-05-27

Vaughn, William (Department: 2144)

Electrical computers and digital processing systems: multicomput

Network-to-computer interfacing

C701S029000, C710S056000

Reexamination Certificate

active

07380023

ABSTRACT:
An electronic control unit (ECU) and a tester are connected to exchange a CAN message through full duplex communication. A CAN communication control unit included in the ECU executes processings such as CAN message reception, response data generation, and CAN message transmission. A buffer management unit included in the ECU is equipped with a plurality of buffers that has uninterrupted ring address structure. The buffer stores reception and transmission data in common with a state sign. The state sign is attached by the CAN communication control unit to indicate a state currently executed in the buffer. The CAN communication control unit selects to use one of the buffers based on the state sign of the buffer when the reception of the request data or the transmission of the response data is executed.

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Japanese Search Report (translation)—Oct. 2005.

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