Stepping motor servo control system for a floppy disk drive

摘要

A stepping motor servo control system for a floppy disk drive, which can increase the track recording density and maintain the interchangeability among different recording media because it is not necessary to pre-format any track servo control information on the media according to this system. This system includes a read/write head and at least two erase heads which are controlled to perform data reading in a track seeking mode so that signals read out by the erase heads may be used as track servo control information of the stepping motor.