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:
Oct. 20, 1992
Filed:
Sep. 24, 1990
Applicant:
Inventors:
Daniel C Chen, Webster, NY (US);
Mark A Smith, Rochester, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
371 211 ;
Abstract
A method for testing and comparing the access times of disk drives in a real time system containing a multiplicity of likes drives. The method includes the steps of generating random locations for each of the drives to access, initializing each of the drives to a common position, determining the time period for each of the drives to find and read the random locations, comparing the differences in the time periods to a threshold value, and declaring a fault upon detecting any of the differences exceeding the said threshold.