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light level compensation (background light adaptation). Architectural considerations relating to imager design are reviewed with respect to both optical parameters and device fabrication technology. Means for exploiting the intrinsically low noise of the CCD are explored. Amplifier designs are described which take advantage of the fact that information in the CCD is stored in the form of charge packets, and is susceptible to clock noise pickup emergence from the CCD. These noise properties of charge coupled imagers are shown to offer unique possibilities for low light level television operation.