Patent Document ID: 9473706
Application ID: 14501429
Patent Status: 1

Claim One:
1. An image sensor, comprising: an imaging area that includes a plurality of pixels; one or more flicker detection regions each comprising one or more pixels; and a first readout circuitry operatively connected to each flicker detection region, wherein the first readout circuitry comprises: a first terminal of a transfer transistor operatively connected to each photodetector in a respective flicker detection region; a second terminal of the transfer transistor operatively connected to a gate of a readout transistor; a first terminal of a switch transistor operatively connected to the gate of the readout transistor; a second terminal of the readout transistor and a second terminal of the switch transistor operatively connected to a voltage source; and a variable capacitor operatively connected between the voltage source and the gate of the readout transistor; wherein at least one of the one or more pixels in at least one flicker detection region is sampled multiple times while at least one pixel in the imaging area captures an image.