Pileup rejection in an energy-dispersive radiation...

Details Pileup rejection in an energy-dispersive radiation... Pileup rejection in an energy-dispersive radiation...

2008-08-01

2010-12-21

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

C250S369000, C702S190000, C702S128000, C702S066000

Reexamination Certificate

active

07855370

ABSTRACT:
A method of detecting edges of a preamplifier signal including identifying a first portion of the signal wherein each part thereof has an instantaneous slope having a first polarity, identifying a second portion immediately following the first portion wherein each part thereof has an instantaneous slope having a second opposite polarity, and identifying a third portion immediately following the second portion wherein each part thereof has an instantaneous slope having the first polarity. The method further includes determining a first difference between the magnitudes associated with an end point and a beginning point of the second segment, determining a second difference between the magnitude associated with an end point of the third segment and the magnitude associated with a beginning point of the first segment, and detecting an edge if: (i) the first difference exceeds a threshold, and (ii) the second difference exceeds a fraction of the threshold.

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