| 摘要 |
PURPOSE:To reduce external noise and noise radiated to the external by providing many signal lines assigned to respective signals and a single return line forming a circuit, which transmits each signal, and reducing the number of required lines. CONSTITUTION:Output ends of drivers 2-1-2-4 of data processing unit 1 are connected to signal transmission lines 6-1-6-4, and the other ends of these lines 6-1- 6-4 are connected to input ends of receivers 5-1-5-4 of data processing unit 4. The input side of unit 1 and the output side of unit 4 are connected to the earth of units 1 and 4, and line 7 forming input as well as output circuits is connected between the earth of unit 1 and the earth of unit 4, and these lines 6-1-6-4 and line 7 are constituted with one bound line or a multicore cable, and lines 6-1-6-4 are twisted to line 7. Thus, the number of required lines is reduced to reduce the influence of external noise onto transmission signals and reduce noise radiated to the external. |
