Digital information transmission network between several stations

Abstract

Abstract The invention relates to a digital information transmission network between several stations, comprising a transmission medium (MT) passing through the stations (Si), each of which possesses an interface with the said medium (MT). According to a general definition of the invention, the interfaces are provided with a communication protocol of the CSMA/CD type. At least one of the stations (Si) acts as master (SM), the others being slaves (SEi). In current mode, the interfaces of the slave stations (SEi) have the right to transmit only in response to a personal request coming from the master station (SM), this eliminating any risk of collision. Some at least of the slave stations, termed freed, have the right however to transmit on their initiative, in an exceptional manner. In the event of collision, on such an exceptional transmission, this collision is resolved by the said CSMA/CD protocol. <IMAGE>

Inventors

• 👤 Paul Rivoal
• 👤 Marc Saumade

Bibliographic Details