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. 30, 2003
Filed:
Jul. 25, 2001
Steven E. Stupp, Los Altos, CA (US);
Maxtor Corporation, Longmont, CO (US);
Abstract
A technique for determining the recording medium temperature, thereby enabling high track density in Hybrid recording. This allows compensation for changes in the ambient temperature and variations in the laser power over its life. Such a temperature measuring technique also enables laser power shaping of the spot size/thermal contour in the medium, providing smaller spot size definition with a given optical system. Baseline modulation is a sensitive probe of the temperature gradient between a magneto-resistive read element (anisotropic or giant) and the surface of a disk. By calibrating the temperature rise (above ambient) of the read element, this technique can be used to determine the disk surface temperature.