| 摘要 |
PURPOSE: To reduce the number of wirings by the use of a simple configuration without enlarging the circuit configuration of a transmission device and to reduce electromagnetic interference and transmit various signals at the time of transmitting plural signals at different speeds between transmission devices. CONSTITUTION: The characteristics of the communication system are that only a reference clock is transmitted as the transmission of a clock in high speed transmission and low speed transmission and that the reference clock is transmitted as the reference clock synchronized with the signal of high speed transmission. Furthermore, the reference clock is transmitted so that it is given from a communication equipment 1 to a communication equipment 2, and it is not transmitted from the communication equipment 2 to the communication equipment 1. Full duplex communication is realized for high speed transmission and low speed transmission. |
