Imaging array with extended dynamic range

An apparatus comprising a plurality of pixel sensors connected to a bit line, each pixel sensor comprising a photodetector comprising:

• a photodiode;
• a floating diffusion node;
• a buffer connected to said floating diffusion node that produces a pixel output signal having a voltage that is a monotonic function of a voltage on said floating diffusion node;
• a bit line gate that connects said pixel output signal to said bit line in response to a row select signal;
• a reset gate that connects said floating diffusion node to a first reset voltage source in response to a reset signal;
• a first transfer gate that connects said photodiode to said floating diffusion node in response to a first transfer signal;
• an overflow capacitor connected to said floating diffusion node via a second transfer gate that connects said overflow capacitor to said floating diffusion node in response to a second transfer signal;
• and
• an overflow transfer gate that connects said photodiode to said overflow capacitor in response to a overflow transfer gate signal.