| 摘要 |
PURPOSE:To attain the display of local clocks in respective districts by transmitting time difference information from a terminal to an exchange, generating clock information corresponding to time difference information from clock information ticked by the hard timer of the exchange and from transmitted time difference information, and returning it to the terminal so as to be timeadjusted and displayed. CONSTITUTION:At the time of rise in the terminal 19, time difference information is given from a time difference information output means 6 to a clock information processing means 8 when time difference data is set or a terminal time reaches 23 o'clock 59 minutes 59 seconds. The clock information processing means 8 transmits the time difference information to the exchange 2. With using received time difference information and information on a highly precise clock 4 at that time, a clock information output means 9 in the exchange 2 calculates clock information corresponding to received time difference time information, and returns it to the terminal 19. The clock information processing means 8 in the terminal 19 is time-adjusted by received clock information. |
