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:
Feb. 28, 1989
Filed:
Feb. 11, 1987
Applicant:
Inventors:
Walter Braun, Wettingen, CH;
Walter Hagmann, Dattwil, CH;
Assignee:
BBC Brown, Boveri Ltd., Baden, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375-1 ; 375100 ; 3403 / ;
Abstract
A method for transmitting data via the power system line of a power supply system by carrier frequency modulation, wherein an improvement in the reliability of transmission is achieved by transmitting the same information several times in succession (time diversity) of different carrier frequencies (frequency diversity). Additional coding of the data by a 'forward error correction code' results in further improvement.