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:
Jul. 08, 2008
Filed:
May. 12, 2000
Bruce A. Liikanen, Berthoud, CO (US);
John W. Van Laanen, Louisville, CO (US);
Tie Jun Yie, Longmont, CO (US);
David L. Rewerts, Longmont, CO (US);
Larry Roohr, Boulder, CO (US);
Bruce A. Liikanen, Berthoud, CO (US);
John W. Van Laanen, Louisville, CO (US);
Tie Jun Yie, Longmont, CO (US);
David L. Rewerts, Longmont, CO (US);
Larry Roohr, Boulder, CO (US);
Maxtor Corporation, Scotts Valley, CA (US);
Abstract
A method and apparatus for improving servo stability in read heads while writing is disclosed. In one embodiment, a magnetic storage device includes a disk surface and a transducer. The disk surface has servo information and user data stored thereon. The transducer includes a read head and a write head. The read head is operable to read servo information and user data from the disk surface. The write head is operable to write user data onto the disk surface. The read head is biased by a first bias current when reading user data and servo information from the disk surface during a read operation. The read head is biased by a second bias current when reading servo information from the disk surface during a write operation. The second bias current, which is different from the first bias current, is selected to increase servo stability in the read head when writing. Further, the write current may also be modified from a standard value in order to increase servo stability in the read head while writing.