Saidman, Sterne, Kessler & Goldstein
Stepping motor servo control system for a floppy disk drive
 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. 
Samsung Electronics Co., Ltd.
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G11B G11B G11B
inventional inventional inventional
Chung H.
Chang