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:
Apr. 19, 2005
Filed:
Nov. 01, 2000
Applicants:
Kent Erickson, Mountain View, CA (US);
Subhashini Kaligotia, Mountain View, CA (US);
Rajiv Ramaswami, Sunnyvale, CA (US);
Inventors:
Kent Erickson, Mountain View, CA (US);
Subhashini Kaligotia, Mountain View, CA (US);
Rajiv Ramaswami, Sunnyvale, CA (US);
Assignee:
XROS, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B006/26 ; H04B010/03 ;
U.S. Cl.
CPC ...
Abstract
The present invention provides methods, apparatus and systems for protecting connections between optical cross-connect switches and client equipment. A connection failure is detected, signaled, and a switch made by the client equipment and the optical cross-connect switch to a protection connection between them so as to minimize service interruption. An out-of-band channel or an in-band channel can be used to signal the connection failure.