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:
Apr. 01, 1986
Filed:
Jul. 25, 1983
Markus Feier, Otelfingen, CH;
Ulrich Marti, Bachenbulach, CH;
Contraves AG, Zurich, CH;
Abstract
During a predetermined measuring time there are generated electrical pulses in a detector arrangement, each of these electrical pulses corresponding to a respective particle which is to be counted. The pulse amplitude of the electrical pulses corresponds to the particle size. In a discriminator circuit the electrical pulses are compared with a threshold value. Those pulses, the pulse amplitude of which exceeds the threshold value, are inputted to a counter circuit and a time measuring circuit for measuring the total time duration of the electrical pulses. All of the electrical pulses are delivered to a further counter circuit and a time measuring circuit. The digital values derived from both counter circuits and both time measuring circuits are infed to a digital computer in which there is computed according to the equation Z.sub.T *=(Z.sub.S -Z.sub.E).multidot.T.sub.S /(T.sub.S -T.sub.E) a count result Z.sub.T * for the pulses, the pulse amplitude of which does not exceed the threshold value. This count result Z.sub.T * has been corrected by the cross-coincidence error.