Pixel cell, method for operating a pixel cell, method for determining the position of the maximum on the envelope of an analogue amplitude modulation signal, device for determining a load, device and method for determining the load of a capacitive element, device and method for setting a circuit node to a predetermined voltage, device and method for charge-based analogue/digital transformation and device and method for charge-based signal processing

摘要

The pixel cell (100) has an output (102), a photo sensor (110) that is formed to produce a radiation in a measuring cycle of a measuring current and in another measuring cycle of another measuring current, and an output node (104). A current storage device (120) is so formed that a curent is embossed by the current stroage device dependent of the former measuring current in a operation mode. A switch unit (130) is formed to form a difference of the embossed current and the latter measuring current at the output node in a selection cycle and to couple the output node with the output. Independent claims are also included for the following: (1) a method for operating a pixel cell (2) a method for determining the position of the maximum on the envelope of an analogue amplitude modulation signal (3) a device for determining a load (4) a device for determining the load of a capacitive element (5) a method for determining the load of a capacitive element (6) a device for setting a circuit node to a predetermined voltage (7) a method for setting a circuit node to a predetermined voltage (8) a device for charge-based analog or digital transformation (9) a method for charge-based analog or digital transformation (10) a device for charge-based signal processing (11) a method for charge-based signal processing (12) a computer program with a program code.