Method and means for capturing magnetic tracks

Details Method and means for capturing magnetic tracks Method and means for capturing magnetic tracks

G - Physics

11

B

352/21.32

G11B 5/55 (2006.01)

Patent

CA 1105136

METHOD AND MEANS FOR CAPTURING MAGNETIC TRACKS Abstract of the Disclosure In a disc drive which does not have a head posi- tion sensor but does have a velocity detector and off-track error detection means for sensing the distance and direc- tion of the displacement of the head from the nearest track center, and in which the direction signal from the error detector is of one polarity for odd tracks and of the oppo- site polarity for even tracks, a system is provided for capturing a track on a blind seek which involves detecting deceleration of the head to below capture velocity, allowing the head to drift past the next track center while sensing whether that track is odd or even polarity, and then initi- ating a capture of the next following track on the basis of the detected track polarity and the direction of seek.

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