Patent ID: 6400523
Filing Date: 2002-06-04
Classification: G11B

Abstract:
A disk recording and reproducing apparatus comprising:a recording disk having a plurality of tracks; a disk driving section which-drives the recording disk; a dual head including a recording head which records data on the recording disk, and a reading head which reads data from the recording disk; a dual head driving section which drives the dual head; a deviation value recorder which records, on any of the plurality of tracks, a value of a deviation from a center of a core; a position determiner which determines a position of the reading head based on the deviation value; an information recorder which records, on any of the plurality of tracks, information identifying a position of the dual head corresponding to the position of the reading head determined by the position determiner; a calculator which reads, using the reading head, the information recorded by the information recorder, and calculates a value of a positional deviation between the recording head and the reading head based on the information read using the reading head; and a positional deviation value recorder which records the positional deviation value calculated by the calculator on the recording disk.