use prediction algorithms where more than one estimated value per picture line falls into the blanking gap according to the present invention every first scanning value falling into the blanking gap and similarly any further scanning values falling into the blanking gap are replaced at the receiver and transmitter by agreement by the same reconstructed auxiliary scanning value h by the last reconstructed scanning values of a picture line s n c r or by constant auxiliary scanning values n a as illustrated in fig5 and 6 fig3 illustrates that it is also impossible to avoid incorrectly reconstructed scanning values by transmitting additional dpcm values extending into the blanking gap al using the prediction algorithms indicated due to the error propagation fig7 illustrates a dpcm coder digitized scanning values s are transmitted by way of a first input e1 to a first register r1 the output of the register r1 is connected to the input of a subtractor su which provides its output to the input of a quantitizer q the output aq of the quantizer q is connected to the input of a first adder a1 which supplies its output to a second register r2 a first predictor pr1 receives the output of the second register r2 and the predictor pr1 supplies an output to the subtractor su and also supplies its output to the second input of the first adder a1 the output of the second register r2 forms the so called output al1 to which the reconstructed scanning values s r are transmitted the first predictor pr1 contains a multiplier m which receives an input that is connected to the output of the second register r2 and has its output connected to the input of an adder ad the multiplier m multiplies.