Apparatus for exchange of data between central station and peripheral stations and system for effecting same

摘要

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. The equipment at each peripheral station includes a recurrence sequence filter, an address selector, a synchronizing address pulse discriminator, and a controlled pulse former which forms an irregular sequence of synchronizing pulses, which are all interconnected.