Method for accessing a pixel and a device having pixel access capabilities

A device having pixel writing capabilities, the device comprises a pixel, a control circuit and a readout circuit coupled to the pixel and to the control circuit;

• wherein the pixel comprises a photo-detector, an input transistor, a second transistor, a third transistor and a fourth transistor;
• wherein the photo-detector and the input transistor are connected to a first node;
• wherein the input transistor, second transistor and fourth transistor are connected to a second node;
• wherein the third transistor outputs a pixel output signal and is coupled to the fourth transistor;
• and wherein the first, second and third transistors are controlled by control signals provided by the control circuit;
• wherein the device is adapted to:
• activate a second transistor and the input transistor;
• inactivate the second transistor;
• compensate for second node voltage change resulting from the inactivating of the second transistor by providing a feedback signal to a pixel node that is coupled to the second node via at least one pixel capacitance;
• repeat, until a control criterion is fulfilled:
• inactivate the input transistor, and measure, by the readout circuit, a pixel output signal;
• and
• operate the input transistor in a weakly conductive mode and provide to the pixel a feedback signal that is responsive to a result of the measurement of the pixel output signal.