| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sport product, a game product, and a training product incorporating a lightweight and high-functional circuit that is highly resistant against bending or shock by allowing the high-functional circuit to be disposed on any of a flat surface and a curved surface. <P>SOLUTION: A circuit comprises a piezoelectric element 25 and amplifying circuits 30, 31, and 60. All of those are provided on the same film substrate. The power generated by the piezoelectric element 25 is amplified by the amplifying circuits 30, 31, and 60, and the amplified power is stored in a battery. The power from a noncontact power transmission module is also stored therein. By utilizing the stored power, a signal is supplied to the piezoelectric element. <P>COPYRIGHT: (C)2012,JPO&INPIT |
