| 摘要 |
<p>PURPOSE:To prevent imperfect contact between a built-in battery and a memory card electrode so as to tightly close a memory card body by adopting a non- contact type closed power unit in the memory card. CONSTITUTION:When a power unit 6 composed of a battery 1, a laser light emitting element 7 and a protective diode 9 which form prescribed pack, is mounted to a memory card 2, the laser light emitting element 7 is supplied with power by the battery 1 and emits light, the light is received by a light receiving element 8 and converted into power and supplied to the power supply of the memory card. Accordingly, the electric power can be supplied to the memory card body 2 by means of optical connection in non-contact by the power unit 6 via the laser 7 and the light receiving element 8. Thus, the imperfect contact can be prevented and the memory card body 2 and the power unit 6 can be tightly closed with a light transparent closing member 11.</p> |
