Method for signal transmission through the direct current line

The invention relates to methods for information transmission via analog signals and can be used in connection interfaces spaced in given electronic devices, such as transmitter and receiver.The method for signal transmission through the direct current line includes transmission of the analog signal from a transmitter to a receiver located on the communication line, combined with the direct current line, by the change of transmitter resistance in the communication line, connecting the resistors from a set of four resistors, three of which with conductances Ys(0), Ys(1), Ys(∞), are reference, and the fourth, with conductance- information and is calculated according to the transmitted signal UC, reading by the receiver of the corresponding current values, calculation of input conductances of the communication line and calculation of the value of the transmitted signal UC according to the corresponding input conductances,,,of the communication line. Novelty of the method consists in that as transmitter is used the reference resistor with the conductance Ys(0) through the feed circuit thereof, constantly connected to the direct current line, and the rest of resistors from the set, functionally related to the transmitter, are connected in turn in the connecting line, conductances of the other reference resistors and conductancerepresent respectively the sum of the initial conductancesand conductance Ys(0). The values of the initial conductances are set dependent on conductance Ys(0). Invenţia se referă la procedee de transmitere a informaţiei prin semnale analogice şi poate fi utilizată în interfeţe de comunicaţie a dispozitivelor electronice distanţate, de exemplu, emiţător şi receptor.Procedeul de transmitere a semnalelor prin linia de curent continuu include transmiterea semnalului analogic de la un emiţător la un receptor, amplasate pe linia de comunicaţie asociată cu linia de curent continuu, prin variaţia rezistenţei emiţătorului în linia de comunicaţie, conectând rezistoarele dintr-un set de patru rezistoare, trei dintre care, cu conductanţele Ys(0), Ys(1), Ys(∞), sunt de referinţă, iar cel de-al patrulea, cu conductanţa- informaţional, şi se calculează după semnalul transmis UC, citirea de către receptor a valorilor curentului corespunzător, calculul conductanţelor de intrare ale liniei de comunicaţie şi calculul valorii semnalului transmis UC conform conductanţelor respective de intrare,,,ale liniei de comunicaţie. Noutatea procedeului constă în aceea