Patent ID: 8154631

Claim:
Method for eliminating a sensor's dark current in an examination exposure device, the dark current resulting from a steady state leakage current and/or dynamic residual signals of the sensor from previous exposures, comprising the steps of: in a first phase (ST 1 ), applying a predetermined voltage (HV) to the sensor and sensing the dark current (I L ) being input into a dark current compensation device; in a second phase (ST 2 ), freezing a state within the dark current compensation device which it had when draining the dark current in the first phase, while maintaining the predetermined voltage (HV) at the sensor; and charging an integration capacity (C int ) with a second voltage(V 2 ), wherein one terminal of the integration capacity is connected to the input of the dark current compensation circuit and the input of an amplifier, wherein another terminal of the integration capacity is connected to ground (ST 3 ).