Data access device using rotational head to access data stored in data strips and data arc segments or data circles
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United States of America Patent
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Feb 26, 2008
Grant Date -
Apr 22, 2004
app pub date -
Apr 28, 2003
filing date -
Oct 16, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention discloses a data card that has a plurality of data arcs and also a linear data track, e.g., a magnetic or optical data strip, disposed on a flat data storage medium. The data card may be employed as a credit card or ID card with conventional magnetic strip for storing conventional data operable with conventional card reader. The data arc segments may be employed to store additional information for authenticating cardholder's personal biometrics information to prevent credit card or ID card frauds. In one embodiment, the data tracks further include at least one full circle data track provided with data for conveniently determining a central position of the data card in a data drive system. The data stored in the full circle data track can also be conveniently used to obtain a measurement of average signal amplitude to calibrate the signal measurements from the data card. The dynamic head loading and unloading configuration and a card insertion lock.
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