H - Electricity – 04 – N
Patent
H - Electricity
04
N
352/21.32
H04N 5/76 (2006.01) G11B 5/588 (2006.01) G11B 15/473 (2006.01)
Patent
CA 1156757
ABSTRACT OF THE DISCLOSURE A tracking control system is used for a magnetic recording and/or reproducing apparatus in which a magnetic head relatively scans a magnetic recording medium to record and/or reproduce an information signal thereon and/or therefrom. The tracking control system comprises a circuit for supplying a tracking reference signal to the magnetic head together with the information signal. The reference signal supplying cicuit supplies the tracking reference signal to the magnetic head so that the magnetic head is positioned at a position where the recorded position of a tracking reference signal on both sides of the tracks adjacent to a certain track is positioned successively shifted respectively to the track longitudinal direction with respect to the tracking reference signal recorded position at the certain track. The tracking control system further comprises a discriminating circuit for discriminating the relative phase with respect to a normal tracking reference signal of a tracking reference signal reproduced as cross-talk from a track adjacent to the track which is to be scanned, according to the normal tracking reference signal reproduced from a normal track which is to be scanned by the magnetic head, from within the signal reproduced by the reproducing means, a tracking error signal deriving circuit for deriving a tracking error signal from the output signal of the discriminating circuit, and a controlling circuit for controlling the relative scanning phase of the magnetic head with respect to the track of the magnetic recording medium by obtaining the mean value component of the tracking error signal from each plurality of tracks out of the tracking error signals.
366410
Marks & Clerk
Victor Company Of Japan Ltd.
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