Patent ID: 6636072
Filing Date: 2003-10-21
Classification: H04L

Abstract:
A data transmission device between two lines for the purpose of transmitting digital data whose logic levels correspond to an active state and an idle state of each line, by means of an interface module which provides the connection between said lines, characterized in thatthe interface module comprises a real terminal and a virtual terminal associated with each of the lines, wherein each real terminal is provided with means for reproducing the state of the line with which it is associated and conversely controlling the state of the line, and is provided with control means for controlling the state of the virtual terminal associated with the other line, and each virtual terminal is provided with means for enabling it to enter an active state when the line with which it is not associated must transmit a data and to enter a passive state if this is not the case, with means for controlling the state of the real terminal with which it is associated, and with means for inhibiting the operation of the control means of said real terminal if and exclusively if the virtual terminal is in the active state.