| 摘要 |
PURPOSE:To give control so that the propagation delay time of the information may be constant from the input of the transmission buffer memory unit to the output of the reception buffer memory unit even in case both the information generation and transmission speeds change mutually with the time lapse. CONSTITUTION:Delay time measurement circuit 134 measures the time required from writing of the special code into buffer memory circuit 132 to its reading based on the start pluse sent from special code detector circuit 131 and the stop pulse sent from special code isolator circuit 133. And the result of the measurement is sent to buffer memory control circuit 135. Circuit 135 turns fixed the sum of the propagation delay time required for the special code which is sent from circuit 131 and measured at delay time measurement circuit 124 of transmission buffer unit 12 to pass through unit 12 and the delay time required for the special code to pass through reception buffer unit 13. |
