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:
Nov. 21, 2006
Filed:
Jul. 21, 2003
Srinivasan Subramanian, Palo Alto, CA (US);
John G. Johnson, San Jose, CA (US);
Gregory C. Onufer, Palo Alto, CA (US);
Srinivasan Subramanian, Palo Alto, CA (US);
John G. Johnson, San Jose, CA (US);
Gregory C. Onufer, Palo Alto, CA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
A system maintains a copy of data stored in a first memory device in a redundant distinct second memory device. Upon detecting an uncorrectable error in the first memory device, the system then relies on the copy of the data in the second memory device. The system, once it starts relying on the data in the second memory device, may then test the first memory device to determine if the uncorrectable error was due to a physical problem or a transient event. If the first memory device is then found to be working correctly, it may, in turn, become a redundant memory device for the second memory device.