US Patent 8723975 High-dynamic-range imaging devices

High-dynamic-range images may be produced by combining multiple integration periods of varying duration, wherein each integration is obtained using a global shutter operation. Charge accumulated during a first integration period may be stored on a first storage node while charge accumulated during a second and third integration time are carried out. Storage of charges accumulated during the second and third integration periods on a second storage node within a pixel while charge is stored on the first storage node allows capture of a global-shutter-based, high-dynamic-range image. A global-shutter-based image capture base on at least three integration time periods may provide enhanced dynamic range.