LAST RECORDING METHOD OF UNIPOLARITY FOR IMPROVING MAGNETIC STABILITY

摘要

PURPOSE: A last recording method of a unipolarity for lastly recording unipolar for improving magnetic stability is provided to improve the performance of a reading head so that a last recording pulse always has a designated polarity. CONSTITUTION: A recording pulse aggregate is generated by a recording driver of a drive electronic device(605). A recording head polarity controller generates an additional recording pulse having a designated polarity(610). The additional recording pulse has an amplitude and an interval similar to a pulse used for recording data on a disk. The additional recording pulse is generated regardless of a polarity of a previous pulse.