| 摘要 |
PROBLEM TO BE SOLVED: To use signal transmission line structure in common for easier pattern designing and restrict the transmission direction between control units so as to prevent a fraud. SOLUTION: A main control unit 140 provided with 8-bit data processing capacity is connected to a special pattern control unit 160 provided with 32-bit data processing capacity via a port circuit 174, a harness 171, and a port circuit 164, and one-way parallel data communication is carried out from the main control unit 140 to the special pattern control unit 160. Data buses 164d, 164e are provided with eight data lines (8-bit) for connecting a connector 164c, a buffer 164a, and a bus 166 to each other. |
