SYSTEMS AND METHODS FOR DETERMINING A POSITION ERROR OF A READ/WRITE HEAD

摘要

A system for tracking a position error of a read/write head. The read/write head is configured to read data recorded to a data layer of a recording medium and read servo information recorded to a dedicated servo layer of the recording medium. To read the servo information, the read/write head is configured to read, from a first track, a first servo signal including first servo bursts of a predetermined frequency, and read, from a second track adjacent to the first track, a second servo signal including second servo bursts of the predetermined frequency. The first servo bursts are orthogonal to the second servo bursts. A position error signal determination circuit is configured to determine the position error using at least one of the first servo signal and the second servo signal.

主权项

1. A system for tracking a position error of a read/write head, the system comprising:
the read/write head, the read/write head configured to (i) read data recorded to a data layer of a recording medium and (ii) read servo information recorded to a dedicated servo layer of the recording medium, wherein the dedicated servo layer includes a first track and a second track adjacent to the first track, wherein, to read the servo information, the read/write head is configured to
read, from the first track, a first servo signal including first servo bursts of a predetermined frequency,read, from the second track adjacent to the first track, a second servo signal including second servo bursts of the same predetermined frequency as the first servo bursts, andread the servo information from the first servo bursts and/or the second servo bursts, and wherein the first servo bursts are orthogonal to the second servo bursts; and a position error signal determination circuit configured to determine the position error using (i) at least one of the first servo signal and the second servo signal and (ii) a waveform having the same predetermined frequency as the first servo bursts and the second servo bursts.