| 摘要 |
PURPOSE:To reduce time required for data communication in a battery-less ID system to achieve quick responses. CONSTITUTION:To charge a power capacitor 6 in an ID tag 1a before data communication, a dedicated incoming antenna 14 and a dedicated outgoing antenna 13 are provided for both an ID tag 1a and an ID controller 2a. Thus, power capacitor 6 charging cycles and data communication cycles for the ID tag 1a are separately performed. |
