Sensor pixels, arrays and array systems and methods therefor

A sensor pixel, comprising:

• a first photo transistor and a second photo transistor, each having a first terminal, a second terminal and a gate terminal, the gate terminals of the first photo transistor and the second photo transistor being coupled to a control line, the first terminals of the first photo transistor and the second photo transistor being coupled to a first data line, the second terminal of the first photo transistor being coupled to a first bias line, the second terminal of the second photo transistor being coupled to a second bias line, the first bias line and the second bias line being alternately switched during readout cycle.

11-14. (canceled)

A method for operating a sensor pixel, the sensor pixel including a first amplifying transistor having a first terminal, a second terminal and a gate terminal, a second amplifying transistor having a first terminal, a second terminal and a gate terminal, a switch transistor having a first terminal, a second terminal and a gate terminal, a storage capacitor having a first terminal and a second terminal, and a sensor, the first terminal of the first amplifying transistor being coupled to a first bias line, the first terminal of the second amplifying transistor being coupled to a second bias line, the gate terminal of the switch transistor being operated by a control line, the second terminal of the first amplifying transistor, the second terminal of the second amplifying transistor and the first terminal of the switch transistor being coupled to at least one data line, the sensor, the second terminal of the storage capacitor, the second terminal of the switch transistor being coupled to the gate terminal of the first and second amplifying transistors, the method comprising the steps of:

• at a selecting cycle, selecting the pixel;
• and
• at a read out cycle, alternately switching the first bias line and the second bias line.

A method for a sensor pixel having a first photo transistor and a second photo transistor, each having a first terminal, a second terminal and a gate terminal, the method comprising the steps of:

• at a first operating cycle, resetting the first and second photo transistor;
• and
• at a second operating cycle, reading sensed data from the first photo transistor and the second photo transistor, including alternately biasing the first terminals of the first photo transistor and the second photo transistor.

25-41. (canceled)