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:
May. 03, 2005
Filed:
Mar. 17, 2000
Daniel M. Joffe, Huntsville, AL (US);
Richard L. Goodson, Huntsville, AL (US);
Curtis W. Dodd, Huntsville, AL (US);
Daniel M. Joffe, Huntsville, AL (US);
Richard L. Goodson, Huntsville, AL (US);
Curtis W. Dodd, Huntsville, AL (US);
Adtran, Inc., Huntsville, AL (US);
Abstract
A method and apparatus for reducing signal distortion in a high speed data communications system caused by a flux imbalance in a system coupling transformer. The signal distortion is monitored by a combination echo canceller circuit connected to the equipment side winding of the transformer, thereby generating an error signal. Changes in the error signal are used by a flux controller to provide a flux cancellation signal. The flux cancellation signal is added with the data signal to generate an offsetting flux signal to the transformer.