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:
Sep. 03, 2013
Filed:
Sep. 23, 2009
Robert J. Thompson, Monroeton, PA (US);
Michael J. Cooper, Marietta, GA (US);
Charles S. Moore, Langhorne, PA (US);
John L. Moran, Uxbridge, MA (US);
Marc L. Morrissette, Plainville, MA (US);
Robert J. Thompson, Monroeton, PA (US);
Michael J. Cooper, Marietta, GA (US);
Charles S. Moore, Langhorne, PA (US);
John L. Moran, Uxbridge, MA (US);
Marc L. Morrissette, Plainville, MA (US);
General Instrument Corporation, Horsham, PA (US);
Abstract
A system estimates impairment contributions for upstream communications in a cable television system. The system receives equalization coefficients used by end devices in the cable television system. The equalization coefficients are used by equalizers to mitigate distortion in upstream channels for the end devices. The system analyzes the coefficients based on impairment thresholds to determine whether impairment problems exist and to identify the types of impairment problems that exist.