PURPOSE: To cope with plural recording formats by providing a memory in which the demodulation signals of plural kinds of recording formats are stored and by sequentialy changing the demodulation signal at every reading of the recording signal by a pickup to supply them.

CONSTITUTION: In the memory 9, the demodulation signals of plural recording formats of magnetic cards are stored, and the stored signals are supplied to a CPU8 under its command. In case of reading out a data from the magnetic card, when the pickup 2 reads the data, the CPU8 supplies to the memory 9 a command signal to supply the demodulation signal of the recording format and designates a demodulator circuit 6 to demodulate based on the supplied signal. In case when the recording format differs, the memory 9 supplies it as sequentially changing its kind, and at the pickup 2 repeating read of the signal is executed until the CPU8 becomes able to decode the data in the card. In such way as aforementioned, plural recording formats can be coped with each other.