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:
Nov. 20, 2007
Filed:
Nov. 15, 2002
Selim Shlomo Rakib, Cupertino, CA (US);
Selim Shlomo Rakib, Cupertino, CA (US);
Terayon Communication Systems, Inc., Santa Clara, CA (US);
Abstract
A process and apparatus for sharing an upstream between multiple downstreams. A automatic discovery process carried out by the CMTS using ranging messages is used to build routing tables that define which cable modems are coupled to each downstream. The downstreams are coordinated in timestamps, MAP messages and UCD messages, and symbol clock frequency if synchronous code division multiplexed bursts are allowed upstream. Also disclosed is a flexible mapper/splitter/combiner that can electronically control switching, combining and splitting as necessary to couple multiple downstreams that share the same upstream onto the same optical nodes or split downstreams that share the same upstream among multiple optical nodes and combine upstreams from multiple HFC systems onto a single upstream input to a CMTS receiver so the CMTS receiver can be fully utilized.