A process for controlling access to a bus by several systems, for example for application in the domotic field, and associated interface devices

摘要

In order to control access of several systems (S10, S11, ...; S20, S21, ...; S30, S31, ...) each operating according to its own specific mode, such as protocol, speed of transmission etc. to a common bus (B) there is provided a time division of access to the bus between the various systems. At the end of its transmission cycle the system which controls the bus (B) at the time generates an event constituting a synchronisation base for all the devices present on line. These then contribute to the formation of a successive conflict byte which leads to the identification of the system destined to gain control of the bus (B).