| 摘要 |
A game chip transmits information in response to an inquiry from a reader/writer. The game chip comprises an IC device, an antenna coil unit, a first ring and a second ring. The IC device constitutes an electromagnetic induction coupling circuit with the reader/writer and stores information. The antenna coil unit is connected to the IC device and generates an induced current by a magnetic flux emitted from the reader/writer to supply power to the IC device when the inquiry is received. The first ring induces the magnetic flux emitted from the reader/writer in one of directions of moving away from and approaching the reader/writer. The second ring induces the magnetic flux induced by the first ring in the other of the directions of moving away from and approaching the reader/writer.
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