Patent ID: 7136842

Claim:
A method of adjusting a signal used for the detection of a parameter carried by a signal, wherein the parameter is represented by a set of data A ij , associated with pixels forming a multidimensional space i, j, evolving with time, and represented at a succession of instants T, wherein the data are associated with the parameter A in the form of a digital signal DATA(A), composed of a sequence A ijt of binary numbers of n bits associated with synchronization signals defining the instant T of the space, and the position i, j, in the space, in which the signals A ijt are received, the method comprising: receiving the signal A ijt from a signal amplifier; comparing each value A ijt with a smoothed value AI ijt so as to determine the variation of the signal A ijt at a given point in the space i, j, wherein AI ijt is derived from the previous values of A ijt in relation to a time constant CO ijt ; generating a signal ABS ijt =|A ijt −AI ijt |; generating binary threshold values DP ijt of A ijt in relation to a threshold S; modifying the time constant values CO ijt based on the corresponding overshoot threshold DP ijt ; calculating histograms for ABS ijt =|A ijt −AI ijt |; calculating histograms for A ijt ; and adjusting the threshold S based on the calculated histograms of ABS so as to adjust the detection sensitivity of the variation of the parameter A; and adjusting the gain of the amplifier based on the calculated histograms of A ijt so as to adjust the amplitude of the received signal A ijt .