Magnetic recording and reproducing apparatus, method of controlling the same, magnetic recording medium, and stamper for manufacturing magnetic recording medium

A magnetic recording and reproducing apparatus comprising:

• a magnetic recording medium on which a positional information is recorded in form of burst signal groups each consisting of either one of a single concave portion and a single convex portion of a concavo-convex pattern formed of a magnetic layer;
• and
• a signal extractor for generating a plurality of gate pulse signals for each of reproduced signals corresponding to each of the burst signal groups, the gate pulse signals each having a pulse width smaller than that of each of the reproduced signals, and extracting a plurality of parts of each of the reproduced signals by using the plurality of gate pulse signals.

A magnetic recording and reproducing apparatus comprising:

• a magnetic recording medium on which a positional information is recorded in form of burst signal groups each including concave portions and convex portions of a concavo-convex pattern formed of a magnetic layer;
• and
• a signal extractor for generating a plurality of gate pulse signals for each of reproduced signals corresponding to either one of a single concave portion and a single convex portion included each of the burst signal groups, the gate pulse signals each having a pulse width smaller than that of each of the reproduced signals, and extracting a plurality of parts of each of the reproduced signals by using the plurality of gate pulse signals.

A method of controlling a magnetic recording and reproducing apparatus, comprising the steps of:

• calculating an area integral of each of reproduced signals corresponding to each of burst signal groups of a positional information recorded on a magnetic recording medium in form of the burst signal groups to generate a position control signal, each of the burst signal groups consisting of either one of a single concave portion and a single convex portion of a concavo-convex pattern formed of a magnetic layer;
• and
• performing a positioning control of a magnetic head based on the position control signal.

A magnetic recording medium on which a positional information is recorded in form of burst signal groups each consisting of either one of a single concave portion and a single convex portion of a concavo-convex pattern formed of a magnetic layer.