System uses time pulse that simultaneously transmits with...

Details System uses time pulse that simultaneously transmits with... System uses time pulse that simultaneously transmits with...

2005-02-08

2005-02-08

Luu, Le Hien (Department: 2141)

Electrical computers and digital processing systems: multicomput

Multicomputer synchronizing

C713S400000

Reexamination Certificate

active

06854019

ABSTRACT:
A network user system and a method of using the same in which one network user station (2c) is connected with another network user station (2a) via a message line (9a) and to which, in a receive mode, the other network user station (2a) can transmit a time message (Un,5) comprising a time of day. The network user station (2a) also simultaneously transmits along with the time message a plurality of time pulses to the other network user stations (2b, 2d, 2e. . . ) in the system. The network user stations (2a, 2b, 2c, . . . ) record the time difference between the instant when the time pulses Tp are received and the instant when the time message (5) is received, and thereupon adjust the time of day contained in the time message (5) based on the time difference. This ensures that the time of day that is further processed in the receiver (4a, 4b, 4c. . . ) is the correct time at the instant of processing and, further, that the clock (6) of the network user station (2a) and the clock (8) of the other network user station (2c) are substantially synchronized. To measure the time difference in a simple manner, a timer is provided, which is started by the time pulse (Tp) and stopped by the time message (5).

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