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:
Dec. 21, 1999
Filed:
Apr. 15, 1998
Applicant:
Inventors:
Bernhard Deck, Weilheim, DE;
Josef Lehmann, Waldshut-Tiengen, DE;
Stefan Ramseier, Birr, CH;
Oddleif Westby, Gjettum, NO;
Assignee:
ABB Research Ltd., Zurich, CH;
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
34031002 ; 34031001 ; 34031006 ; 34031003 ; 375259 ; 375262 ;
Abstract
A method and a system for rapid and interference-free data communication via power supply networks at any voltage levels. The combined effects of interference from signal distortion, frequency-selective signal attenuation or noise and from pulsed interference is reduced by using an MCM multicarrier modulation method. By combining the MCM method with a specially adapted interleaver (data scrambler) and error-protection coding, the error rates can be drastically reduced and the transmission rates can be increased to considerably more than 2 kbit/s.