The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2012
Filed:
Jul. 09, 2009
Giovanni Cherubini, Rueschlikon, SZ;
Robert Allen Hutchins, Tucson, AZ (US);
Jens Jelitto, Rueschlikon, SK;
Melanie Jean Sandberg, Tucson, AZ (US);
Giovanni Cherubini, Rueschlikon, SZ;
Robert Allen Hutchins, Tucson, AZ (US);
Jens Jelitto, Rueschlikon, SK;
Melanie Jean Sandberg, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
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.