Apparatus and method for determining read head position

Details Apparatus and method for determining read head position Apparatus and method for determining read head position

G - Physics

11

B

352/21.32

G11B 21/10 (2006.01) G11B 5/58 (2006.01) G11B 5/588 (2006.01) G11B 15/467 (2006.01)

Patent

CA 1183603

APPARATUS AND METHOD FOR DETERMINING READ HEAD POSITION ABSTRACT OF THE DISCLOSURE A system is described for determining the position of a magnetic read head relative to the center of a selected data tragic on a magnetic recording medium moving with respect to the read head. Tracking signals of equal frequency, but out of phase a predetermined fixed amount, are recorded on adjacent data tracks. The tracking signal frequency is selected to be a long enough wavelength such that a single read head positioned over a selected data track also detects the tracking signal recorded on adjacent data tracks. A phase comparator compares the phase of the tracking signal detected by the read head with respect to the phase of a reference signal of equal frequency, and a resultant signal is generated which is indicative of any deviation of the read head from the center of the selected track.

409120

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