| 摘要 |
<p>PURPOSE:To reduce the transmission/reception time and to simplify the mutual synchronizing circuits for transmission/reception signals by sending a reference signal through other line for a control signal from one equipment. CONSTITUTION:An equipment B having a low speed clock signal CLb is provided with a reference signal generating section 19, from which a reference signal Sx is generated and sent to the equipment A through a line L3. A reference signal synchronizing section 15 of the equipment A receives it and generates a detection output Rx synchronously with a clock signal CLa. A transmission signal Sa as a control signal or a relay signal of the equipment A is sent to a line L1 synchronously with the clock signal CLa via a transmission gate 11 and a transmission holding section 12. Thus, a synchronizing circuit for the control signal is not required, the hardware is reduced and the cycle time is decreased.</p> |
