MULTI-TRACK RECORDING UTILIZING MULTILEVEL PARTIAL-RESPONSE

Multi-level partial response channel is investigated for submicron-tra ckwidth multi-track recording based on high areal density perpendicula r magnetic recording. The assumed single-pole head combination is a mu lti-write head of submicron-trackwidth and relatively wide single read -head. Encoding rules including nero-level magnetization for the parti al response channel is proposed for the head and the channel combinati on. A simulation assumed ideal playback waveform and an experiments wi th actual heads show availability of the method.