Patent ID: 7222056
Filing Date: 2007-05-22
Classification: G01D

Abstract:
1. A method for minimizing the error of a signal to be measured using filtering at variable bandwidth, said method comprising the steps of: determining an absolute value of the distance of an observed filter output to at least one further filter output having lower bandwidth; if the absolute value falls below a threshold value, which is a predefined multiple of the intrinsic noise of the measuring sensor, using the observed filter to display the signal; if the absolute value exceeds the threshold value, recognizing a significant change of the information component in the signal, using a filter having at least one of (a) higher bandwidth and (b) lower response time to display the signal; wherein the difference of the signal from a version of the signal whose bandwidth is delimited more strongly is observed as a variation of the signal; and wherein the bandwidth is regulated on the basis of a physical criterion inherent to the method in such a way that signal changes not caused by noise are recognized.