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:
Jul. 09, 2002
Filed:
Aug. 27, 1999
Peter Allen Dempsey, Convent Station, NJ (US);
Daniel John Goudzwaard, Bolingbrook, IL (US);
Salvatore John Iaccarino, Ramsey, NJ (US);
Stephen L. Kay, Naperville, IL (US);
Andrew Bennett Struble, Woodbridge, IL (US);
Davinderjit Singh Kohli, Lombard, IL (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A computer system comprises an active processor and one or more spare processors. A dummy thread is created on the active processor while the active processor is running a current thread, causing the current thread to become dormant. The operating system of the active processor saves a set of internal state information for the current thread into a first memory coupled to the active processor. Each write to the first memory is duplicated in an equivalent spare memory coupled to each of the one or more spare processors. The dummy thread then activates the spare processor and de-activates the active processor.