Systems and methods for head position estimation

摘要

Systems, methods, devices, circuits for data processing, and more particularly to systems and methods for determining a down track distance between two or more read heads on a read/write head assembly.

主权项

1. A data processing system, the data processing system comprising:
a first data input processing circuit operable to receive a first data set from a first read head and to store the first data set to a first buffer; a second data input processing circuit operable to receive a second data set from a second read head and to store the second data set to a second buffer, wherein the second data set is offset from the first data set; a correlation processing circuit operable to:
correlate a portion of the first data set with a portion of the second data set to yield a correlation value; anddetermine the offset between the first data set and the second data set at a delay where the correlation value indicates a match between the portion of the first data set and the portion of the second data set; and a radius calculation circuit operable to calculate an estimated radial location of a track on a storage medium from which the first data set and the second data set are derived.