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:
Sep. 03, 2002
Filed:
Apr. 30, 1999
Michael D. Schaff, Longmont, CO (US);
Bernard Alan Russick, Niwot, CO (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A method and apparatus for selecting an optimized write current for a write head to improve read performance from a track-of-interest on a storage disc. Read error rates are detected from a test pattern written to the track-of-interest using a plurality of test write currents. The read error rates are detected over a range of read positions offset from the track-of-interest. Off-track read capability (OTC) values corresponding to each test write current are determined based on the read error rates that satisfy an acceptable error rate criterion. The test write current that corresponds to the maximum OTC value is selected as the optimized write current. An optimized write current value corresponding to the optimized write current and a head value corresponding to the write head are associatively stored in a storage unit, and the values are read from the storage unit and the optimized write current is supplied to the write head in accordance to the optimized write current value.