G - Physics – 06 – F
Patent
G - Physics
06
F
354/22
G06F 17/18 (2006.01) G01N 15/12 (2006.01)
Patent
CA 1322794
Attorney's Docket No. 7894 CAN INVENTOR: ADRIAN LORENZ INVENTION: METHOD OF AND APPARATUS FOR DETERMINING THRESHOLD VALUES FOR THE ANALYSIS OF PARTICLES CONTAINED IN A LIQUID ABSTRACT OF THE DISCLOSURE The apparatus for analyzing particles in a particle containing fluid, especially pretreated liquids containing blood samples, contains storage device and computing sections for determining separation threshold values and the particle distribution as a function of a predetermined particle parameter. The separation threshold values are determined on the basis of measured values of the predetermined particle parameter arranged in individual histograms containing at least two particle population maxima and minima. At least one particle population minimum is determined using an adaptive method. For insufficiently distinct particle population minima, there is first determined, on the basis of histograms containing corresponding distinct particle population minima and maxima, a characteristic difference quotient: - 1 - Image The separation threshold value associated with the insufficiently distinct particle population minimum is determined on the basis of the characteristic difference quotient according to: Sx(j,k)unres= (Max.(k) - Min.(j))unres.Qx(j,k)res+ Min. (j)unres.
557384
Contraves Ag
Lorenz Adrian
Oerlikon-Contraves Ag
Perley-Robertson Hill & Mcdougall Llp
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