ES380499A1 - Telegraph signal transmission system - Google Patents

Abstract

A telegraphic signal transmission system that mainly comprises: lines distributed in groups, all the lines of the same group having the same characteristics; a group memory assigned to each group of lines and containing information on the common characteristics of the lines in the group; a data item whose function is to count the duration of transmission of a telegraphic signal (unit) and a distributor indicating the category of the unit being transmitted; a line memory assigned to each line and containing a character to be transmitted or in the process of transmission, on this line; a control block provided to perform a group process function or a transmission function; these different means being arranged so that the control block is initially switched to the group processing function where it analyzes the content of a group memory and detects, by means of the duration counter, if the time has come to transmit the next unit designated by the distributor, in such a way that if so, the control block is then switched to the transmitting function in which it successively consults the group's line memories and, according to the position of the distributor, obtains the value of the signal to be transmitted on each line and then, when all the line memories have been consulted, controls the unit transmission on all the different lines, operating the switching circuit again and switching the control block to process another group, and so on; making such a system economically possible to transmit telegraph signals on telegraph lines of various characteristics and at the same time limiting the traffic imposed on the control block. (Machine-translation by Google Translate, not legally binding)