Tracking error signal forming circuit

Details Tracking error signal forming circuit Tracking error signal forming circuit

G - Physics

11

B

352/21.1

G11B 5/588 (2006.01) G11B 5/592 (2006.01) G11B 15/467 (2006.01) G11B 21/10 (2006.01)

Patent

CA 1320568

ABSTRACT OF THE DISCLOSURE A tracking error signal forming circuit is disclosed, which circuit comprises means for obtaining a reproduction time difference between specified signals, each of which is contained in the reproduced signal reproduced by each of at least two heads having different azimuthal angles and mounted on an electro-mechanical converting element; reference value forming means for forming a reference value for the tracking control, operating means for calculating the difference between the reproduction time difference and the reference value or the sum thereof; displacement means for displacing forcedly the electro-mechanical converting element in the positive or negative direction; and maximum value detect- ing means for detecting the maximum value of at least one of the reproduced signals; the reference value forming means including means for calculating the difference between the reproduction time difference and the fixed reference value or the sum thereof at the point of time the maximum value of the reproduced signal is obtained by the maximum value detecting means.

562783

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