A pixel cell, a method of operating a pixel cell, a method of determining a position of a maximum of an envelope of an analog amplitude modulated signal, a device for determining a charge amount, apparatus and method for determining an amount of charge on a capacitive element, apparatus and method, and setting a circuit node a predetermined voltage, apparatus and method for charge-based analog / digital conversion and apparatus and method for charge-based signal processing

摘要

A pixel cell (100; pixels) is described with an output (102); a photosensor (110; sensor), which is designed to generate a first measuring current (I SUB DPh1 / SUB) depending on radiation in a first measuring cycle (tau SUB C / SUB) and in a second Measuring cycle (tau SUB C / SUB) to generate a second measuring current (I SUB DPh2 / SUB); an output node (104); a current storage device (120; SI-Mem), which is designed so that in a first operating mode, a current (I SUB M1 / SUB) by the current storage device (120) depending on the first measuring current (I SUB DPh1 / SUB) and that in a second mode of operation the current storage device (120) is adapted to receive the impressed current (I SUB M1 / SUB) so that the impressed current is detectable at the output node (104) is; and a switching unit (130; IO), which is designed to generate, in a readout cycle, a difference between the impressed current (I SUB M1 / SUB) and the second measuring current (I SUB DPh2 / SUB) at the Form output node and the output node (104) to the output (102) to couple.