| 摘要 |
<p>PURPOSE:To synchronize time information between respective terminals and a central control unit. CONSTITUTION:A communication start request signal is sent from the terminal 1 to the central control unit 4, which receives the communication start request signal and then sends a communication start response signal to the terminal device 1. Once the central control unit 4 receives the communication start request signal, a central control unit information processing part 5 reads information on the current time out of the internal timer 6 of the central control unit, adds the time information to generate the communication start response signal, and sends the signal to the terminal device 1. The terminal device 1 which has received the communication start response signal corrects the time of its internal timer 3 so that the terminal information processing part 2 matches with the time information added to the signal.</p> |
