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. 05, 1999
Filed:
Oct. 31, 1995
Billy J Fuller, Colorado Springs, CO (US);
Thomas G Whitten, Colorado Springs, CO (US);
Sun Microsystems, Inc., Palo Alto, CA (US);
Abstract
A method for verifying a desired operation of an untrusted memory device is performed under load and includes shadowing read and write operations to the untrusted memory device and to a trusted memory device. The shadowing is performed by concurrently writing data to both the trusted and untrusted memory devices, and concurrently reading data from both the trusted and the untrusted memory devices. All data returned from the trusted and untrusted memory devices in response to the read operations are compared, and if any data compared does not have a same value, a value from the trusted memory device is returned and an error indication is generated.