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. 13, 1998
Filed:
May. 05, 1995
David M Parry, San Jose, CA (US);
Charles E Narad, Santa Clara, CA (US);
Daniel E Lenoski, San Jose, CA (US);
Silicon Graphics, Inc., Mountain View, CA (US);
Abstract
A clock system for a distributed multiprocessor system includes a plurality of local clock circuits and a distribution network. The distribution network includes a plurality of interconnected routers. Each local clock circuit is associated with a processing node of the multiprocessor system. Each local clock circuit generates a global clock source signal, provides the global clock source signal to the distribution network, receives a global clock signal back from the distribution network, and generates a global time value based on a local clock signal and the global clock signal. The router is part of the distribution network of the multiprocessor system. The router receives the global clock source signals from each of the local clock circuits, selects one of the global clock source signals as the global clock signal and provides the global clock signal to the distribution network for distribution to each of the local clock circuits.