| 摘要 |
This invention discloses a magnetic data-card drive system. The drive system includes a magnetic pickup head for rotationally moving over and accessing data stored in the magnetic data-card. The magnetic pickup head is provided for reading data from and writing data to the magnetic data card. The magnetic pickup head may be applied for accessing data over substantially one-half of the rotational movement. In another preferred embodiment, the magnetic pickup head is applied for accessing data over several arc-segments during the rotational movement. The magnetic pickup head may be design for rotating in a single rotational direction, or for rotating in clockwise and counterclockwise directions. Furthermore, the magnetic pickup head may be designed for rotating over arc segment having radius smaller than half-width of the magnetic data card, or for rotating over an arc segment having a radius greater than half-width of the magnetic data card. In a preferred embodiment, the magnetic pickup head is provided as a removable and replaceable module. The magnetic pickup head may access the data by contacting the magnetic data card, or by rotating at a distance above the magnetic data card. The magnetic data-card drive system further includes a motor that has a rotating shaft for mounting and rotating the magnetic pickup head. Also, the magnetic pickup head further includes a data signal transformer for transforming a data signal through data signal induced changes of magnetic flux.
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