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:
May. 12, 1998
Filed:
Oct. 15, 1996
David Bruce Anderson, Minnetonka, MN (US);
Seagate Technology, Inc., Scotts Valley, CA (US);
Abstract
A data format defining a data field having an embedded reading-address subfield and an offset writing-address header allows a transducer having separate read and write elements separated by a gap to perform read and write operations. When reading from the disc, the read element is positioned adjacent the data fields stored on a track. As the data fields pass the read element, the data field addresses stored in the embedded reading-address subfields are compared to a target address. If a match is found, the user data contained in a user data subfield of the matched data field is provided to a controller. When writing to the disc, the read element is positioned adjacent the writing-address headers. The addresses stored in the writing address headers are read and compared to the target address. If a match is found, the user data provided by the controller is written to the user data subfield of the data field associated with the matched writing-address header, and the address of the data field is rewritten to the embedded reading-address subfield of the data field. The data field is offset from the writing-address headers by a magnitude determined by the gap and skew angle.