| 摘要 |
PROBLEM TO BE SOLVED: To increase a transmission speed and to reduce the number of cables required for an interface. SOLUTION: The interface circuit 1 comprises a logical state judging part 2 and an electric current source 3. The logical state judging part 2 judges the logical state of each phase of 3-phase logic signal (0 or 1) that is inputted. The electric current source 3 outputs 3-phase balanced currents Ix, Iy, and Iz of positive or negative phases according to the judgement of the logical state judging part 2. Since Ix, Iy, and Iz are all 3-phase balanced currents, the currents of 6 patterns except for 2 patterns set to all positives and all negatives, are outputted. Thus, more pattern signals can be transmitted than before. COPYRIGHT: (C)2009,JPO&INPIT
|
