| 摘要 |
PURPOSE: A system for changing a reflection signal from a saw ID tag and a method thereof are provided to selectively and electrically disconnect bus-bars of reflection plates of a SAW ID tag, thereby easily converting data of a SAW ID tag. CONSTITUTION: A disconnection target bus-bar selecting unit(21) selects bus-bars which are targets to be disconnected each other. A reflection signal changing unit(22) electrically disconnects the selected bus-bars. The reflection signal changing unit changes a reflection signal reflected from a reflection plate before the electrical disconnection. The disconnection target bus-bar selecting unit outputs unique number information of the selected bus-bars and a change starting signal of the reflection signal. The reflection signal changing unit is made of demultiplexers. |
