Patent ID: 8094398

Claim:
An arrangement method of a servo pattern of a bit-patterned storage medium comprising a servo area and a data area, the method comprising: extending an address information on a bit map comprising an abscissa corresponding to a circumferential direction of the storage medium and an ordinate corresponding to a radial direction of the storage medium to generate an original address information; dividing the original address information into groups, each group extending along the ordinate; obtaining demodulated values of the original address information for each group as original intra-group demodulated values; setting, with respect to a lowest order group, the original address information as new address information and the original intra-group demodulated value as a new intra-group demodulated value; obtaining a new address information of a first group so that an original intra-group demodulated value of the first group comprises a new intra-group demodulated value of a group lower by one order and a new intra-group demodulated value based on the new address information; and determining an arrangement pattern of bits in the servo area based on the new address information.