| 摘要 |
PROBLEM TO BE SOLVED: To reduce power consumption by transmitting a huge amount data with a few number of signal lines in an input output interface that transmits/ receives a signal. SOLUTION: The input output interface expresses logical values according to the sequence of timings of transition edges of a plurality of signals respectively transmitted through a plurality of signal lines or expresses logical values according to a time difference between the transition edges of signals transmitted through the signal lines and a transition edges of a reference timing signal. Thus, one signal line can transmits a huge amount of data. Since huge amount of data can be transmitted by one signal transmission, the transfer rate of data can considerably be enhanced. Since a small number of signal lines is enough for the transmission, number of signal input circuits and signal output circuits can be reduced to decrease the power consumption. Further, since a small number of the signal lines is enough for the transmission, the wiring region of the signal lines can be decreased.
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