| 摘要 |
<P>PROBLEM TO BE SOLVED: To add a generic receiving device, being not to join in a peculiar transmission route, to a wireless communication system for transmitting accurate time information by wireless through the peculiar transmission route. <P>SOLUTION: Slave devices 3, each comprising a wireless IC tag, decode time information received by wireless from higher-rank devices to correct time measurement time of a time measurement part based on the time information thus acquired. They produce and transmit transmission information for correcting time measurement time of lower-rank devices with rank information showing own ranks added to the measurement time of the measurement part. Further, at definite points of time, time information of the same format as existing time information such as a JYY standard wave signal is produced and broadcast on faint airwaves. If a device is disposed around the slave devices 3, which is not capable of joining in the transmission of time information by using the peculiar transmission route but is capable of receiving generic time information such as the standard wave signal, the measurement time of the device can be corrected. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
