Delay line clipping in a scintillation camera system

Abstract From the Canadian patent

A scintillation camera system includes compensated delay line clipping circuitry for eliminating base line undershoot and a restoring circuit for minimizing base line restoration of a data signal. The compensated circuitry includes a single delay line circuit for clipping an incoming data pulse having a relatively long trailing edge. A variable resistor is coupled with the circuit for controlling amplitude and polarity of the unclipped, incoming data pulse. A value of this unclipped pulse is controllably summed with the clipped pulse for correcting delay line attenuation and base line undershoot. The restoring circuit is combined with the single delay line clipping circuit for restoring the …