Magnetic Card Reader

摘要

In order to perform processing of analyzing card data in an appropriate amount of time depending on the number of tracks actually present on a magnetic stripe with use of a single demodulation circuit, the single demodulation circuit produces, based on magnetic data read by a magnetic head, a single common card running signal obtained by ORing card running signals of tracks present on the magnetic stripe of the magnetic card, a clock signal of each track present on the magnetic stripe, and a data signal of each track present on the magnetic stripe. A card running signal generation circuit generates, based on the common card running signal and the clock signal of each track, an individual card running signal of each track present on the magnetic stripe. A data analysis processing unit determines, based on presence or absence of the individual card running signal, presence or absence of a track on the magnetic stripe to perform processing of analyzing the data signal only for the track determined to be present on the magnetic stripe.

主权项

1. A magnetic card reader, which is configured to support reading of magnetic data from a magnetic card having one to N tracks on a magnetic stripe, where N is an integer of 2 or more, the magnetic card reader comprising:
a magnetic head configured to read, from the magnetic card, the magnetic data of each of tracks present on the magnetic stripe; a single demodulation circuit configured to produce, based on the magnetic data, a single common card running signal obtained by ORing card running signals of the tracks present on the magnetic stripe, a clock signal of the each of the tracks present on the magnetic stripe, and a data signal of the each of the tracks present on the magnetic stripe; a card running signal generation circuit configured to generate, based on the single common card running signal and the clock signal of the each of the tracks, an individual card running signal of the each of the tracks present on the magnetic stripe; and a data analysis processing unit configured to determine presence or absence of a track on the magnetic stripe based on presence or absence of the individual card running signal and to perform processing of analyzing the data signal only for the track determined to be present on the magnetic stripe.