Return-to-zero magnetic recording system

Details Return-to-zero magnetic recording system Return-to-zero magnetic recording system

G - Physics

11

B

352/20.1

G11B 5/00 (2006.01)

Patent

CA 1253618

RETURN TO ZERO VERTICAL MAGNETIC RECORDING SYSTEM Abstract of the Disclosure An return-to-zero (RZ) vertical digital magnetic recording method and apparatus comprising a selectively magnetizable recording medium which includes a recording layer of magnetic material having a low vertical remanence. A magnetic recording head is positioned in close proximity to the recording medium, and relative motion is produced between the recording medium and the recording head. To record data, the recording head is energized with one short duration current pulse for each unit of data to be recorded. The resulting bipolar magnetic write field closes substantially perpendicular through the recording medium thereby producing, in the medium, a similarly bipolar flux configuration having the magnetic transition centered about the gap of the magnetic recording head. Data is represented by the transition in RZ vertical magnetic recording. SA984009

513651

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