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. 24, 1998
Filed:
Dec. 21, 1995
Kenneth L Perdue, Franklin, IN (US);
Gerd Wartmann, Greenwood, IN (US);
Donald D Cummings, Greenwood, IN (US);
Endress + Hauser GmbH + Co., Maulburg, DE;
Abstract
An apparatus and method for processing a time domain reflectometry (TDR) signal to generate an output result corresponding to a valid process variable. The method includes the steps of processing the TDR signal using at least two different techniques for detecting a valid reflection pulse generated by the process variable to calculate an independent result using each of the at least two techniques, and applying a weighted factor to the independent results from each of the at least two different techniques to provide weighted output results. The method also includes the steps of comparing the weighted output results, and selecting the valid output result from the weighted output results based on the comparing step. In the illustrated method, the comparing step includes the step of summing the weighted factors for each independent result.