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:
Mar. 18, 2003
Filed:
Mar. 22, 2001
Sysmex Corporation, Hyogo, JP;
Abstract
A particle signal processing apparatus which processes a particle signal representative of characteristics of particles includes an amplifier having input and output terminals for amplifying a particle signal including serial pulses to output an output signal including the amplified serial pulses, a filter section for extracting a low frequency component from the output signal of the amplifier so that the extracted component is fed back into the input terminal as a negative feedback signal, and a feedback signal control section for allowing the filter section to fix the negative feedback signal when each of the amplified pulses rises and to hold the fixed negative feedback signal while the amplified pulse is larger than a threshold value.