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. 14, 2010
Filed:
Aug. 25, 2004
Gregory B. Wiedenman, Blaine, WA (US);
Nathan A. Eckel, Fridley, MN (US);
Kelvin S. Vartti, Hugo, MN (US);
Gregory B. Wiedenman, Blaine, WA (US);
Nathan A. Eckel, Fridley, MN (US);
Kelvin S. Vartti, Hugo, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A multiprocessor system in which a defer phase response method is utilized that allows for a deferring agent to interrupt the normal flow of bus transactions once it gains control of system interface bus. The deferring agent is allowed to look ahead to determine if a continuous stream of defer phase cycles are pending transfer. If pending, the deferring agent will not release control of the bus until the pending defer phase cycles have been depleted. The look ahead feature allows expedited return of higher priority defer data, while minimizing bus dead cycles caused by interleaving defer phase cycles with normal bus traffic.