| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce an appearance probability of a peak value of EMI, in a serial interface that performs signal transmission using two different voltage values and at different transmission rates for the respective voltage values. <P>SOLUTION: A data transmission system 10 has a transmitting part 1, a receiving part 2, a transmission path 3, and a delay part 4. The delay part 4 is provided in a transmission path 31 where a high-speed signal S1 is transmitted, and delays the transmission of the high-speed signal S1 behind a low-speed signal S2. When the high-speed signal is transmitted in a section b2-c of the transmission path 31, a delay time of Δt is generated based on the case where the high-speed signal is transmitted in a section a-b1 of the transmission path 31. That is, a phase of the high-speed signal transmitting in the section b2-c is shifted based on the phase of the high-speed signal transmitting in the section a-b1. Thereby, since a period in which a peak value of EMI is generated can be shortened, an appearance probability of the peak value of EMI can be reduced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
