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:
Mar. 30, 1999
Filed:
Feb. 05, 1996
Uri Rogers, Boise, ID (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A method of predictive failure detection for a data storage system comprises (a) determining a first mean squared error (MSE) value for a read operation wherein the MSE value is indicative of a signal to noise ratio of the read operation, (b) determining a second MSE value for a read operation, and (c) comparing the first and second MSE values wherein a difference in the MSE values indicates a change in the data storage system. The MSE values are directly related to the distance between the storage medium and the read head element used in the read operation. A significant change in MSE values or a trend of increasing MSE values over time indicates a probable impending failure of the data storage system.