Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1997-01-14
1999-02-16
Westin, Edward P.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
25037006, G01T 117
Patent
active
058723633
ABSTRACT:
An automatic pole-zero adjustment circuit for an ionizing radiation spectroscopy system includes a digital conversion circuit, responsive to random analog pulses passing through the system for converting the random analog pulses to digital pulses; a programmable digital shaping filter including means for applying a pole-zero cancellation adjustment to compensate for under/overshoot at the output of the programmable digital shaping filter; digitally programmable sampling means including means for defining a window for sampling the trailing edge of the digital pulses and means for sampling the digital pulses during that window to determine the presence of undershoot or overshoot; and a digitally programmable control circuit, responsive to the pole-zero sampling means, for driving the programmable digital shaping filter to introduce an under/overshoot correction signal to the digital programmable shaping filter.
REFERENCES:
patent: 4866400 (1989-09-01), Britton, Jr. et al.
patent: 5393982 (1995-02-01), Mott et al.
patent: 5684850 (1997-11-01), Warburton et al.
Bingham Russell David
Ursery, Jr. Jesse
EG&G Instruments, Inc.
Hanig Richard
Westin Edward P.
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