| 摘要 |
Apparatus and method wherein a credit card sized high-memory card, composed of a magnetic storage medium, or alternatively of a nonmagnetic material such as plastic having a suitable magnetic recording medium inserted therein or placed thereon, can be inserted into an operative position adjacent to a read/write head, and the head can be moved relative to the high-memory card to permit the head to write data to or read data from the magnetic recording medium of the high-memory card while the card is rotated. In the preferred embodiment, a disk-shaped platen is provided, with a shallow channel in its upper surface sufficiently wide to accept a high-memory card placed lengthwise therein, such that the upper surface of the card will be level with the upper surface of the platen, and the geometric center of the high-memory card will be centered directly over the rotational axis of the platen. The platen can then be rotated so that the magnetic medium of the high-memory card rotates symmetrically with it under the read/write head which can be rotated in a limited arc about its own axis, which axis is situated outside the circumference of the platen, or alternatively, the read/write head can be movable radially of the central axis of the platen, whereby the read/write head is capable of writing to or reading from all portions of a circular area of magnetic medium centered on the high-memory card, the diameter of which area of the magnetic medium so used may be less than or equal to the width of the high-memory card.
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