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High Frequency Write Technique Disclosure Number: IPCOM000069603D
Original Publication Date: 1978-May-01
Included in the Prior Art Database: 2005-Feb-21

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Lim, JC [+details]


This article describes a technique for recording data magnetically that employs a special high frequency signal having a selected flux change rate that is applied to a write driver. The frequency of the special signal is high enough so that the recorded signal has a flux change rate beyond the reproduction response range of the read head. Thus, the high frequency signal is recorded but not detected during readout of the data. By application of this special high frequency signal, undesirable signals produced by changes in current rate or by signal ramps are made nondetectable.