Patent ID: 7821738

Claim:
A magnetic recording medium on which data track pattern regions, in which data track patterns are formed by concave/convex patterns comprising convex parts, at least protruding end parts of which are formed of magnetic material, and servo pattern regions, in which servo patterns are formed by concave/convex patterns comprising convex parts, at least protruding end parts of which are formed of magnetic material, are provided so as to be alternately disposed in a circumferential direction and on which at least one predetermined region that differs to both the data track pattern regions and the servo pattern regions is provided, each predetermined region being disposed between two servo pattern regions out of the servo pattern regions that are adjacent in the circumferential direction, wherein in each servo pattern region, a preamble pattern region in which a preamble pattern as the servo patterns is formed, an address pattern region in which an address pattern as the servo patterns is formed, and a burst pattern region in which a burst pattern as the servo patterns is formed, are provided, and a concave/convex pattern including a plurality of first convex parts, at least protruding end parts of which are formed of magnetic material, formed continuously in a radial direction is formed in each predetermined region, the first convex parts being formed so that a diameter of a virtual inscribed circle with a largest diameter out of virtual inscribed circles on protruding end surfaces of the first convex parts is no greater than a diameter of a virtual inscribed circle with a largest diameter out of virtual inscribed circles on protruding end surfaces of second convex parts as the convex parts formed inside the data track pattern regions and virtual inscribed circles on protruding end surfaces of third convex parts as the convex parts formed inside the servo pattern regions.