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. 13, 2001
Filed:
Sep. 17, 1999
Applicant:
Inventor:
Robin Paul Rickard, Bishop's Stortford, GB;
Assignee:
Nortel Networks Limited, St. Laurent, CA;
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/104 ;
U.S. Cl.
CPC ...
H04M 1/104 ;
Abstract
An Apparatus for extracting communications signals from power lines, which lines are arranged such that leakage of signals occurs between them. The apparatus receives a signal from each of at least two of lines (blue, red, yellow) and combines the received signals so as to increase the ratio of wanted signal to interference plus noise S/(1+N). Preferably the combining is achieved by weights W,, W,, W,and a summer. The weights phase shift and scale the received signals in amplitude. The apparatus can also be used for transmitting in the downstream direction.