Disk drive compensating for inter-track interference in analog read signal

摘要

A disk drive is disclosed comprising a disk comprising a plurality of data tracks, and a head comprising a first read element and a second read element. The first read element is positioned over a first data track and the second read element is positioned over a second data track. A first analog read signal emanating from the first read element is adjusted based on a second analog read signal emanating from the second read element in order to reduce noise in the first analog read signal due to interference from the second data track.

主权项

1. A disk drive comprising:
a disk comprising a plurality of data tracks; a head comprising a first read element and a second read element; and control circuitry configured to:
position the first read element over a first data track and the second read element over a second data track;adjust a first analog read signal emanating from the first read element based on a second analog read signal emanating from the second read element in order to reduce noise in the first analog read signal due to interference from the second data track, thereby generating an adjusted analog read signal;adjust a gain of the second analog read signal to generate an amplified analog read signal; adjust the first analog read signal based on the amplified analog read signal; generate an error metric based on the adjusted analog read signal; and adjust the gain of the second analog read signal based on the error metric.