Abstract: Method for operating a network (10), wherein the network (10) comprises at least one outer network (12) having at least one network device (14) and at least one inner network (13) having at least one network device (15), wherein additionally a transmission unit (16) is present that blocks a transmission of data from the outer network (12) to the inner network (13) and allows it in the opposite direction (or vice versa), characterised in that the transmission unit (16) permits a transmission of data only from the inner network (13) to the outer network (12) and the at least one network device (15) sends data from the inner network (13) to the transmission unit (16) with a first address, wherein the transmission unit (16) converts this first address into a second address and thereafter the data are transmitted with this second address in the direction of the outer network (12), the second address being a target address for the at least one network device in the outer network (12).

Abstract: Method for operating a network (10), wherein the network (10) comprises at least one outer network (12) having at least one network device (14) and at least one inner network (13) having at least one network device (15), wherein additionally a transmission unit (16) is present that blocks a transmission of data from the outer network (12) to the inner network (13) and allows it in the opposite direction (or vice versa), characterised in that the transmission unit (16) permits a transmission of data only from the inner network (13) to the outer network (12) and the at least one network device (15) sends data from the inner network (13) to the transmission unit (16) with a first address, wherein the transmission unit (16) converts this first address into a second address and thereafter the data are transmitted with this second address in the direction of the outer network (12), the second address being a target address for the at least one network device in the outer network (12).

Abstract: The invention relates to a mechanism designed for use in areas at risk of explosions, having at least two devices (1, 2) connected to one another by transmission means (3) for exchanging data, at least one of the devices (1, 2) being located in the area as risk of explosion and a decoupling network (4 to 11) being provided on the input side of the devices (1, 2), wherein the invention provides for the decoupling network (4 to 11) to be dimensioned and designed such that the energy that may be stored therein is not able to exceed a predeterminable maximum value.

Abstract: When a light-emitting diode is controlled for transmitting high-frequency signals, such as video signals, or quick-changing analog signals, the electro-optical signal conversion is subjected to distortions due to temperature variations in the barrier layer of the diode which arise due to rapidly varying power losses. The circuit presented herein includes a compensating stage operatively connected to the diode, for alleviating such signal distortions. The system is capable of differentiating between the respective conditions of rising and falling edges of the control in the representative signal of signals to be transmitted.