Image sensors and methods with multiple column readout lines for a column of pixels multiplexed together for output

摘要

An image sensor includes a plurality of pixels and a row driver. Each pixel includes a photodiode, a first transfer gate, a second transfer gate, a first storage node, and a second storage node. The row driver is configured to provide signals to the first transfer gate and the second transfer gate of each pixel such that charge is transferred from the photodiode to the first storage node through the first transfer gate while a signal representing charge stored at the second storage node is output from the pixel to a column readout line. The row driver is also configured to provide signals to the first transfer gate and the second transfer gate such that charge is transferred from the photodiode to the second storage node through the second transfer gate while a signal representing charge stored at the first storage node is output from the pixel.