| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a key device which is easy to use in the case of battery exhaustion. <P>SOLUTION: A key device includes a case 29 that can be carried by a user, a mechanical key 28 provided in the case 29 so as to project and retract, a power generator 27 for generating power using the projection and retraction of the mechanical key 28, and an electronic key control unit 21 consuming the generated power. <P>COPYRIGHT: (C)2013,JPO&INPIT |
