Patent ID: 8842392

Claim:
A magnetic recording medium comprising: a data area on which a plurality of first magnetic dots are arranged at predetermined positions to record information; a servo area on which a plurality of second magnetic dots for specifying the positions of said plurality of first magnetic dots are arranged at predetermined positions; and servo frames, each of which includes information indicating an address on said medium, configured so that said servo frames are radially discontinuous, and so that said servo frames and space-areas, on which no servo frames exist, are alternately radially arranged at a cycle W, wherein the number of said servo frames arranged to touch a circumference of said medium having a radius r is N per circumference or 2N per circumference, N being a natural number, and wherein when the number of said servo frames arranged to touch the circumference of said medium having a radius r 1 is 2N per circumference, a radial overlapping-width or 1 between adjacent ones of said servo frames arranged at a frequency of 2N per circumference to touch the circumference of said medium having the radius r 1 is set to be equal to or larger than a read/write offset amount ΔMRr 1 of a magnetic head, which corresponds to the radius r 1 .