公开(公告)号：GB2484229B

公开(公告)日：2016-09-07

申请号：GB201200295

申请日：2010-06-02

Applicant: IBM

Inventor： JENS JELITTO ,  GIOVANNI CHERUBINI ,  ROBERT ALLEN HUTCHINS ,  MELANIE JEAN SANDBERG

IPC: G11B5/584 ,  G11B5/29

Abstract: A method for monitoring a plurality of servo channels, providing a finite state machine (FSM) comprising a single servo channel mode and a combined servo channel mode, and moving a sequential information storage medium comprising a plurality of servo bands across a read/write head comprising a corresponding plurality of servo sensors. The method further asserts an acquisition flag by a servo channel if that servo channel is tracking a servo pattern, and asserts a bit flag by a servo channel if a new LPOS bit is decoded. If at least one acquisition flag is asserted, the method determines if a bit flag is asserted by a servo channel associated with said asserted acquisition flag, and if an acquisition flag and a bit flag are asserted by a servo channel, the method determines a relative positioning of each servo sensor with respect to an associated servo pattern.