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:
Feb. 17, 2009
Filed:
Dec. 18, 2003
Brent K. Parrish, Hollis, NH (US);
Brent K. Parrish, Hollis, NH (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
According to one embodiment, a telecommunications device includes a bus. A first controller coupled to the bus is operable to generate first pulses for communication using the bus. A second controller coupled to the bus is operable to generate second pulses synchronized with the first pulses for communication using the bus. A card coupled to the bus is operable to receive the first and second pulses, generate internal pulses synchronized with the first and second pulses, compare at least one internal pulse with at least one first pulse to detect a loss of synchronization, and indicate this loss of synchronization to allow the second controller to determine a failure of the first controller.