Apparatus and method for reading binary data from a magnetic stripe

摘要

A magnetic data reader and method for reading magnetic data from a stripe of passenger tickets while avoiding erroneous encoding of clock data which causes a read error. A CPU controls the counter value adder to acquire a reference time by summing up values of an interval time calculated from two or more bits of clock data and averaging the added value. If the binary data change within the clock data window and the corresponding interval time exceeds the permissible range of the prescribed reference time, the CPU restarts a demodulation operation by resetting a demodulator circuit.