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:
Dec. 27, 2005
Filed:
Jul. 17, 2001
Boris Reynov, Cupertino, CA (US);
Raanan Ben-zur, Campbell, CA (US);
Nicholas A. Balatoni, Santa Clara, CA (US);
Boris Reynov, Cupertino, CA (US);
Raanan Ben-Zur, Campbell, CA (US);
Nicholas A. Balatoni, Santa Clara, CA (US);
Ciena Corporation, Linthicum, MD (US);
Abstract
According to one embodiment, a method is disclosed. The method comprises receiving a first set of clock signals from a first clock unit at a second clock unit whenever the first clock unit is operating. The method further includes receiving a signal indicating that the second clock unit is to enter into the operating mode; and entering a holdover mode at a protection timing unit within the second clock unit. In the holdover mode, the protection timing unit generates output clock signals based upon the first set of clock signals received from the first clock unit at the second clock unit.