Gain adjustable sensor pixels, arrays and array systems and methods therefor

摘要

A sensor pixel including a sensor, charge storage, a reset block having a reset input, readout block, and a charge leakage gain adjustment block having a gain adjustment control input. The sensor, charge storage, reset block, readout block, and charge leakage gain adjustment block are each operatively connected to a node. Adjusting the gain of a sensor pixel by storing charge from a sensor in a charge storage connected to a node, leaking charge from the charge storage to reduce the charge at a node, and reading out a state of the pixel represented by the charge of a node.

主权项

1. A sensor pixel comprising:
a node, a sensor, charge storage, a reset block having a reset input, readout block, and a charge leakage gain adjustment block for the node, including at least one controllable switching transistor biased by and for discharge to a controllable low voltage and the at least one controllable switching transistor including a transistor having a gain adjustment control input, the gain adjustment control input and the controllable low voltage both controllable at a leakage time to effect charge leakage gain adjustment from the node, wherein the sensor, charge storage, a reset block, readout block, and charge leakage gain adjustment block are each operatively connected to the node.