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. 11, 2001
Filed:
Jun. 09, 1999
Patrick Clinton Arnett, Morgan Hill, CA (US);
David Cheekit Cheng, Palo Alto, CA (US);
Radley Wahl Olson, Cupertino, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and a device for write precompensating a data pattern for recording the pattern on a magnetic storage medium at high data rates. A first predetermined write-precompensation delay is applied to the second transition of a burst of transitions of the data pattern. A second predetermined write-precompensation delay is applied to the last transition of a burst. A third predetermined write-precompensation delay is applied to the middle transitions, if any, of a burst. When the burst is a dibit, the application of the second and third predetermined write-precompensation delays is omitted and the first predetermined write-precompensation delay is based on the burst being a dibit. When the burst is a tribit, the application of the second predetermined write-precompensation delay is omitted and the first and third predetermined write-precompensation delays are based on the burst being a tribit. A fourth predetermined write-precompensation delay is applied to the transitions in the data pattern that are not part of a burst of transitions.