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AssigneeSiemens Nixdorf Informationssysteme Aktiengesellschaft
InventorsHubert Behr, Wolfgang Fick, Waldemar Jager
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A process of scanning and evaluating binary data stored on a magnetic track of a magnetic storage card includes a calibration at the beginning of the scanning operation with certain information stored on the card and a determination of a calibrated time interval. A time curve of the output signal in the calibrated time interval is registered and compared to predefined curve patterns in order to determine deviation of the registered time curve from the curve patterns. A curve pattern showing a least deviation from the registered time curve is identified. The curve pattern may be selected on the basis of information obtained from a previously determined output signal curve. Also, the extreme values are detected to obtain information stored on the card.
A method for evaluating binary information stored on the magnetic track of a magnetic storage card in the form of flux changes in a two-frequency code, in which the magnetic storage card is scanned by relative movement produced between the magnetic storage card and an electromagnetic transformer and an output signal induced by the magnetic flux changes and having extreme values of differing types is generated by the electromagnetic transformer, the method comprising the steps of:
A method for evaluating binary information stored on the magnetic track of a magnetic storage card in the form of flux changes in a two-frequency code in which the magnetic storage card is scanned by relative movement produced between the magnetic storage card and an electromagnetic transformer and a time varying output signal induced by the magnetic flux changes and having extreme values of differing type is generated by the electromagnetic transformer, the method comprising the steps of:
Dependencies are inferred from the claim text.