Magnetic recording and reproducing apparatus
AssigneeTDK Corporation
InventorsAkimasa Kaizu, Makoto Moriya
Life of this patent
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Abstract
A magnetic recording and reproducing apparatus includes a separator and first and second amplifiers. The separator separates a servo data signal and a user data signal, both reproduced by a reproducing head. The first and second amplifiers are connected to the output stage of the separator to increase the amplitude ratio of the servo data signal to the user data signal. The magnetic recording and reproducing apparatus can precisely decode the servo data along with the user data, and can achieve a highly precise servo control.
Claims20
A magnetic recording and reproducing apparatus having a magnetic recording medium including a user data section capable of storing user data and a servo data section in which servo data is formed by a predetermined concavo-convex pattern formed by a magnetic layer, the magnetic recording and reproducing apparatus comprising:
- a separation device for separating a servo data signal and a user data signal, both reproduced by a reproducing head;
- and
- a gain changing device connected to an output stage of the separation device to increase an amplitude ratio AS/AY between the servo data signal having an amplitude AS and the user data signal having an amplitude AY.
Dependencies are inferred from the claim text.