| 摘要 |
<p>PURPOSE:To ensure the real time process with high accuracy for plural processors installed at remote places, by effectively using a standard watch having the function of a battery backup device. CONSTITUTION:A main processor 1011 reads the real time information out of a standard watch 104 and holds the information in its internal counter to start a real time operation. On the other hand, secondary processors 1012-101m give a request to the processor 1011 to transmit the real time information in prior to the real time operation of each secondary processors. This request of transmission is accepted at the processor 1011 via each station and each transmission line that carry out the control for transmission of data with the bit serial mode. Then, the processor 1011 sends back the real time information of the internal counter via each station and transmission line. Receiving this information, each secondary processor performs a replacement for its internal counter to start the real time operation with this replaced counter. Thus the processors at remote places can perform the real time process with high accuracy.</p> |
