| 摘要 |
PROBLEM TO BE SOLVED: To normally demodulate data even if the signal of the magnetic data is attenuated more than a regulated value by the wear, etc., of magnetic stripes. SOLUTION: The magnetic data is read by a magnetic head 1, by which the waveform signals outputted from the magnetic head are accumulated in a memory 5. After the demodulation data outputted from a counter 8 is outputted, the magnetic data is read again by the magnetic head 1 if there is an instruction for rereading from the device of an output destination. The synchronous adding of the waveform signals thereof and the already accumulated waveform signals by a synchronous adder 6, the demodulating and outputting of the data and the accumulating of the waveform signals which are the demodulated data into the memory 5 are repeated. |
