| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a small tag capable of easily avoiding conflict in electric waves transmitted from each IC tag even when a plurality of IC tags are closely disposed, and capable of obtaining inexpensive configuration having low power consumption. <P>SOLUTION: The tag includes an information processing means 16 for performing a predetermined information process, a memory means 14 in which data read by the information processing means 16 and an identification ID for identifying a self IC tag are recorded, a clock means 18 for ticking a clock frequency by which the information processing means 16 is operated, and a wireless transmitting means 20 for transmitting a result of a process to be transmitted from the information processing means 16 as an electric wave at proper timing. A transmission timing controlling means 26 for deciding a transmission time interval for transmitting a result of process by each information processing means 16 to the wireless transmitting means 20 is provided. The transmission time interval is defined by an increasing and decreasing pattern which randomly increases/decreases around a constant time period as a central value, while the increasing/decreasing pattern is assigned with a pattern which is different in every identification ID. <P>COPYRIGHT: (C)2010,JPO&INPIT |
