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. 26, 2002
Filed:
Sep. 23, 1999
Applicant:
Inventors:
Nils Lofgren, Backvagen, SE;
Per Karlsson, Trefaldighetsvagen, SE;
Gunilla Lundahl, Sclrosvagen, SE;
Fredrik Lundqvist, Wargentinsgatan, SE;
Assignee:
Ortivus AB, Taby, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B 2/900 ; H04B 1/500 ;
U.S. Cl.
CPC ...
H03B 2/900 ; H04B 1/500 ;
Abstract
A signal filter includes a first adaptive filter receiving a desired signal containing a noise component and a first noise correlated reference signal, and outputting a first filtered output signal. A second adaptive filter, receives the desired signal containing the noise component and a second noise correlated reference signal and outputs a second filtered output signal. Signal filter parameters of the second adaptive filter are controlled based on the first filtered output signal and the second filtered output signal.