| 摘要 |
PROBLEM TO BE SOLVED: To increase reliability of timing information at the time of communicating timing information by arranging a time difference detection means to detect a time difference between a 1st timing information and a 2nd temporal information, and a correction means to correct the timing information generated by a timing information generation means according to a prescribed time difference or longer. SOLUTION: A server transmits a packet P1 containing a time-stamped record of 15 minutes to a client after the lapse of 15 minutes. The client compares time-stamped records of both with each other at the time of receiving the packet P1, and confirms that own time-stamped record is advanced by 300 msec. Namely, the time-stamped record of the client is 300 msec. more advanced than the one of the server at a time T1. Then, the client starts correction processing of the time-stamped record at the time of recognizing that own time-stamped records have advanced, for instance, 300 msec. or longer by more than the number of a fixed data. In this case, the deviation of the time-stamped record should not be corrected at a stretch, but corrected three times by taking about 15 seconds by 100 msec. |
