| 摘要 |
PROBLEM TO BE SOLVED: To prevent data destruction caused by detachment of a card by retaining the card by the plate structure of a ferrite plate and to reduce the magnetic resistance in a magnetic flux passage part by securing a close magnetic path. SOLUTION: A card 6 is separated from a transmission/reception equipment 1 (a), and in this case, a retaining plate 3 is raised. Ferrites 4 and 4' of an oxide magnetic body are buried in the retaining plate 3, and the retaining plate 3 is supported by movable attaching tools 5 and 5'. When the card 1 is placed on the transmission/reception equipment 1 (b), a card detector 2 detects the card. Then, the card 6 is retained by the retaining plate (c). Since it is the most important time when write to a non-volatile memory in the card is executed in the case of a non-contact IC card, it is important to retain the card 6 so as to prevent destruction of contents of the internal memory. |
