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. 19, 2010
Filed:
May. 08, 2002
Feisal Daruwalla, Fremont, CA (US);
John T. Chapman, Cupertino, CA (US);
Richard Meller, Sunnyvale, CA (US);
Roland Chan, Mountain View, CA (US);
Nicos Achilleoudis, Santa Clara, CA (US);
Feisal Daruwalla, Fremont, CA (US);
John T. Chapman, Cupertino, CA (US);
Richard Meller, Sunnyvale, CA (US);
Roland Chan, Mountain View, CA (US);
Nicos Achilleoudis, Santa Clara, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
The present disclosure relates an improved cable data switching unit that provides a fail-over system whereby one line card can protect a plurality of US (upstream) or DS (downstream) channel line cards, providing N+1 protection, with one linecard being able to protect N number of working linecards. When a failure is detected in a working linecard, the signals being routed by the failing linecards are re-routed seamlessly to a protect linecard. This disclosure provides for data to be passively routed, providing for data flow even if power is lost.