| 摘要 |
<P>PROBLEM TO BE SOLVED: To expand an application area by mutually sharing information among a plurality of pieces of wireless equipment, such as wireless tags, while reducing the power consumption of the wireless equipment. <P>SOLUTION: A synchronization state obtained by matching transmission timing and receiving timing together is established among the plurality of wireless tags, based on a receiving means of an LF signal equipped in the wireless tag or data input from a sensor; and after that, sensor information indicating the detection content by the sensor or history information indicating the accumulated sensor information, etc. are mutually transmitted among the wireless tags. Each wireless tag, when information transmitted from other wireless tags is received, the received information of other information tag with the information held by itself are compared; and when there is a large difference between the two pieces of information, predetermined abnormality notification or storage processing of abnormal history is carried out. <P>COPYRIGHT: (C)2008,JPO&INPIT |
