Patent ID: 8570414

Claim:
A method of processing data from an electronic imager comprising the steps of: sampling a pixel offset level for a pixel of a predetermined row and storing a charge in a pixel offset column capacitor of a corresponding column of pixels; connecting said pixel offset column capacitor to an imager output during a first time interval including connecting said pixel offset column capacitor to a pixel offset bus shared among plural columns, and simultaneously connecting said pixel offset bus to an input of an output buffer; sampling a pixel signal level for said pixel of said predetermined row and storing a charge in a pixel signal column capacitor of said corresponding column of pixels; connecting said pixel signal column capacitor to said imager output during a second time interval distinct from said first time interval including connecting said pixel signal column capacitor to a pixel signal bus shared among plural columns, and simultaneously connecting said pixel signal bus to said input of said output buffer; and subtracting said pixel offset level from said pixel signal level for said pixel employing a correlated double sampler circuit.