Ccd storage module

Abstract

A CCD storage module has storage positions which are arranged in cascade and which are produced by electrodes arranged in insulated fashion above a semiconductor substrate. In respect of each storage position, an item of information incoming as a n-digit binary number is stored in that a quantity of charge consisting of i unit charges is stored in respect of each storage position, where i corresponds to the value of the binary number of the information. A decoder circuit is provided for the input of the quantity of charge to the first storage position. The decoder circuit consists of n input circuits and each input circuit is assigned one bit position of the information composed of n bits and produces a charge corresponding to the digit value of that position. The outputs of the input circuits are linked with the aid of an electrode which is common to all of the input circuits to form the next storage position of a storage field and between the common electrode and the outputs of the input circuits there is, in each case, a surrender electrode which determines whether or not the charge produced by the input circuit reaches the common electrode.