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:
Sep. 16, 2008
Filed:
Feb. 03, 2006
William F. Bruckert, Los Gatos, CA (US);
Mihai Damian, Campbell, CA (US);
James S. Klecka, Georgetown, TX (US);
Peter A. Reynolds, Mountain View, CA (US);
Dale E. Southgate, Nevada City, CA (US);
William F. Bruckert, Los Gatos, CA (US);
Mihai Damian, Campbell, CA (US);
James S. Klecka, Georgetown, TX (US);
Peter A. Reynolds, Mountain View, CA (US);
Dale E. Southgate, Nevada City, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A method and system of executing duplicate copies of a program in lock step. Some illustrative embodiments are a computer system comprising a first processor executing a program, a second processor executing a duplicate copy of the program (the first processor and second processor executing their respective programs in lock step), a logic device coupled to the processors, and a shared device coupled to the processors through the logic device. The first processor presents to the logic device a first operation involving the shared device, and the second processor does not present an operation, or presents an operation that does not match the first operation. The logic device obtains a second operation from the second processor that matches the first operation, and wherein a single operation that matches the first and second operations is presented to the shared device.