| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a time synchronizing system capable of accurately synchronizing the times of a plurality of electronic devices. <P>SOLUTION: The time synchronizing system 10 comprises the plurality of electronic devices (for example, sensor device) 12, and at least one cradle 14 for charging the electronic devices. The cradle 14 acquires time information for synchronizing it with the standard time, for example, time information from an NTP (Network Time Protocol) server 16, and periodically provides accurate time information to the electronic devices 12. The electronic devices 12 performs clocking over a predetermined period, and corrects a time conversion parameter based on a count value according to the internal clock based on the time information provided from the external cradle 14. Whenever the correction is performed, the time interval required for clocking is set long, and further correction is performed. Thus, times of all electronic devices can be synchronized accurately. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
