Pulse processing circuit with correction means

US10078009B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Heiner Daerr · Hamburg, DE
• Klaus Juergen Engel · Aachen, DE
• Christoph Herrmann · Aachen, DE
• Roger Steadman Booker · Aachen, DE
• Ewald Roessl · Ellerau, DE

Key dates

• Filing date: Apr 17, 2014
• Grant date: Sep 18, 2018
• Expiry date: Apr 27, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01T1/247
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

The invention relates to a method and a pulse processing circuit (100) for the processing of current pulses (CP) generated by incident photons (X) in a piece of converter material, for instance in a pixel (11) of a radiation detector. Deviations of the pulse shape from a reference are detected and used to identify pulse corruption due to pile-up effects at high count rates and/or charge sharing between neighboring pixels. The deviation detection may for instance be achieved by generating, with a pulse shaper (110), bipolar shaped pulses from the current pulse (CP) and/or two shaped pulses of different shapes which can be compared to each other.