Patent ID: 6907389

Claim:
A process for the serial transmission of digital measurement data from a transmitter to a remotely disposed receiver, wherein at the transmitter end at least one absolute value of a continuously measured physical parameter and correction values describing alterations in said parameter are prepared in digital form and transmitted to the receiver which forms updated measurement values from the transmitted values, characterised in that on the part of the transmitter as well as on the part of the receiver, using mathematical equations which describe the alterations in time of the parameter which is to be measured, on the basis of exact measured values (α Tx−1 , α Tx−2 , α Tx−3 . . . ) which the transmitter obtains at moments in time (T x−2 , T x−1 , T x ) which are of equal spacings in respect of time and are accurately known both on the part of the transmitter and also on the part of the receiver, predicted exact values (α T(x−2)b , α T(x−1)b , α Txb ) are calculated in advance for moments in time for which the receiver does not yet have an exact measured value {steps 13 , 17 , 21 25 and 31 , 32 , 34 , 35 , 37 , 38 , 40 in FIG. 1 }, said predicted exact values (α T(x−2)b , α T(x−1)b , α Txb ) being used as updated measurement values on the part of the receiver, that on the part of the transmitter, when a measured value (α Tx−2 , α Tx−1 , α Tx ) belonging to a moment in time (T x−2 , T x−1 , T x ) is present, its difference (δα Tx−2 , δα Tx−1 , δα Tx ) in relation to the predicted exact value (α T(x−2)b , α T(x−1)b , α Txb ) is calculated {steps 11 , 15 , 19 , 23 in FIG. 1 } and at least one correction value (δα Tx−2 , δα Tx−1 , δα Tx ) representing such a difference is transmitted to the receiver {steps 12 , 16 , 20 , 24 in FIG. 1 }, receiving that at least one correction value {steps 30 , 33 , 36 , 39 in FIG. 1 }, and wherein on the part of the transmitter as well as on the part of the receiver the calculation of a predicted exact value (α T(x−2)b , α T(x−1)b , α Txb ) {steps 13 , 17 , 21 , 25 and 31 , 32 , 34 , 35 , 37 , 38 , 40 in FIG. 1 } involves so many known exact measured values (α Tx−1 , α Tx−2 , . . . ), each of which was obtained for an earlier one of said moments in time (T x−3 , T x−2 , T x−1 . . . ) {steps 10 , 14 , 18 , 22 in FIG. 1 }, that said correction value (δα Tx−2 , δα Tx−1 , δα Tx ) can be encoded with such a small number of bits to be transmitted, that the deviation between each calculated value and the respective measured value permanently remains within the required level of measurement accuracy.