Abstract: Modulation patterns and parameters are provided at the central station to form elementary signals of addresses of the peripheral stations from the elements of an address subsequence generated at the central station. Different modulation patterns and parameters formed from the elements of data are provided at the central station to form elementary data signals and elementary address signals. The elementary address signals and elementary data signals of a given peripheral station are successively transmitted from the central station. The availability of data for transmission is determined at the central station by setting intervals of time between successive elementary address signals depending on the availability of data for transmission from a given peripheral station to the central station and from the central station to a given peripheral station.

Abstract: In a system for an exchange of data between a central station and peripheral stations, the sharing of time in a multiplex channel is effected by the transmission of address signals. For each peripheral station, the address signal consists of a single binary signal or several binary signals, the sequence of which is in a predetermined recurrence relation. Address and data signals are transmitted successively; the time intervals between address signals for successive peripheral stations are dependent on the availability of data for transmission. The system has equipment installed at the central station and at each of the peripheral stations. The equipment at the central station includes a recurrence sequence generator, a code addressing unit and a pulse former which forms an irregular sequence of synchronizing pulses, which are all interconnected.