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. 08, 2003
Filed:
Sep. 18, 2000
Dan V. Gorcea, Kanata, CA;
Carl C. Anderson, Kanata, CA;
Nortel Networks Limited, St-Laurent, CA;
Abstract
Generation of a compensation signal for canceling the distortion component of a distorted signal at an affected node, where the distortion component is caused by electro-magnetic coupling from a distortion-causing signal source. The distortion-causing signal is coupled into a distortion cancellation system using capacitive or electro-magnetic coupling techniques, resulting in the generation of an induced voltage. The induced voltage is fed to an impedance network and then to a plurality of cells, one for each of the affected nodes. The compensation signal appearing at the output of the cell is combined with the distorted signal at the corresponding affected node. By appropriately selecting the impedance values of the components in the corresponding cell, substantial cancellation of the distortion from the distortion-causing signal source can be achieved. The system can be simplified if the degree to which the distortion-causing signal source couples into the distorted signal is determined ahead of time.