COLLECTIVE CHARGE READING AND INJECTION IN RANDOM ACCESS CHARGE TRANSFER DEVICES

摘要

Random access charge transfer devices are provided in which electric charge stored within each detection element (pixel) (12) in one of any desired combination of columns and rows may be simultaneously read. Electric charge stored within each pixel in at least one selected column (18) or row (20) may be simultaneouly read. Injection of the electric charge stored in each detection element in one of any desired combination of columns and rows may be simultaneously caused. Or, injection of the electric charge stored in each detection element in at least one selected column or row may be simultaneously caused. In certain embodiments, a plurality of pre-amplifiers (32) are connected to the column or row electrodes, for simultaneously producing a plurality of outputs, each output corresponding to the electric charge stored within at least one pixel in a single column or row. A summation amplifier (34) is provided having a feedbadck loop connected into each of the pre-amplifiers.