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:
Feb. 28, 2006
Filed:
Oct. 31, 2003
Chun Tse, Beltsville, MD (US);
Charles S. Krafft, Owings Mills, MD (US);
Isaak D. Mayergoyz, Rockville, MD (US);
Dragos I. Mircea, College Park, MD (US);
Chun Tse, Beltsville, MD (US);
Charles S. Krafft, Owings Mills, MD (US);
Isaak D. Mayergoyz, Rockville, MD (US);
Dragos I. Mircea, College Park, MD (US);
University of Maryland, College Park, MD (US);
Abstract
A system () and method for high-speed massive magnetic imaging on a spin-stand () is provided. The system () includes a spin-stand system () for driving a rotational spindle () to which a magnetic hard disk () is mounted. A magnetic read head () reads data from disk () and is in electrical communication with a universal head preamplification board (). The universal head preamplification board () outputs readable voltage signals which are transmitted to an oscilloscope () for displaying a read-back voltage display (). The signals are processed by a processing means () to generate scanned image data () on a display means. The display signals () are utilized to calibrate the magnetically read data to account for the eccentricity of the hard disks with respect to the center of rotation of the spin-stand spindle. Whole tracks of hard disk data can be imaged through the process of 'track-centering' and 'track-following'. An alignment algorithm is used to align the magnetically read data to compensate for the instability of the triggering signal.