Transversal filter having parallel inputs

In a transversal filter of the type in which an analog charge transfer device shift register is integrated on a doped semiconductor substrate and includes a plurality of stages which have parallel inputs for receiving an input signal and a plurality of evaulation circuits connected thereto, each evaluation circuit including an area doped opposite to the substrate, first and second input gates and a transfer gate immediately adjacent the transfer channel of the charge transfer device shift register, one of the input gates connected to an input signal, the other input gate connected to a constant voltage and the oppositely doped area and the transfer gate respectively connected to receive first and second clock pulses from a clock, and in which the charge transfer device shift register includes an output, in combination therewith, the improvement comprising:

• a counter connected to receive and operated by clock pulses from the clock, and including a plurality of outputs;
• a plurality of comparators each including first and second inputs and an output, the first inputs connected to said counter;
• a plurality of gate circuits connected to the evaluation circuits;
• and
• a plurality of memories operable to provide a plurality of output signals at a plurality of outputs connected to respective inputs of said comparators,
• said outputs of said comparators connected to said gate circuits for causing blocking the evaluation circuits to one of the clock pulses as a function of the respective comparison results between said counter output signals and said memory output signals.