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:
Jan. 24, 2012
Filed:
Nov. 09, 2007
Applicants:
Michael Horvat, Munich, DE;
Bernd Heise, Munich, DE;
Inventors:
Michael Horvat, Munich, DE;
Bernd Heise, Munich, DE;
Assignee:
Lantiq Deutschland GmbH, Neubiberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 3/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus for calibrating received signal measurements in a digital subscriber line (DSL) device are disclosed. In an exemplary method, a received signal level is measured for each of one or more subcarriers of a digital subscriber line signal and converted into a corresponding measured power level. A corrected received power level is calculated as a function of the measured power level, a reference input impedance value, a nominal loop impedance value, and a pre-determined input impedance value for the DSL device.