Patent ID: 8780487
Filing Date: 2014-07-15
Classification: G11B

Abstract:
1. A method comprising: setting a center value of at least one target track of a data storage medium having tracks recorded in a shingled manner where one track partially overlaps an adjacent track, the center value based on a track density of the data storage medium; writing data to an adjacent previous track to the target track, then to the at least one target track, then an adjacent subsequent track to the target track, so that the adjacent subsequent track partially overlaps the target track, and the target track partially overlaps the adjacent previous track; reading the data a number of times by adjusting a position of a read head based on a range of off track values, the range of off track values based on the center value of the at least one target track; and determining an optimum off track value of the at least one target track resulting in a minimum error occurrence number with respect to the read data corresponding to each of the range of off track values.