Peak shift correction circuit and magnetic storage medium playback apparatus

摘要

A playback signal played back from a magnetic storage medium is supplied to a pulse width correction block, which converts it into a signal having a predetermined time interval. The signal is transmitted through a first group of shift registers, from which outputs are further transmitted via a correction block through a second group of shift registers. The parallel data outputted from the first group of the shift registers are supplied to a detection block. The detection block provides a signal to a correction block when detecting a signal pattern which causes a peak shift. Within the correction block, the signal is replaced by a signal for which the time interval is corrected in order to correct the peak shift. The corrected signal is supplied to a separator so that a playback digital signal is generated. <MATH>