Data transmission system of optto-couplers

Claim 2

Data transmission system having at least two spatially separated devices mutually connected by electric lines affording data transmission therebetween in both directions, the devices each having at least one data output and a data input separated from the data output, comprising an optocoupler and an electrical receiving unit included in at least one of the devices, said optocoupler having an input connected to the data input of said one device, and having an output connected to said electrical receiving unit of said one device, the data inputs and the data outputs of each of said spatially separated devices being insulated from one another and the data outputs of one of the spatially separated devices being connected with the respective data inputs of another one of the devices, and being similarly connected in the opposite direction.

Claim 3

Data transmission system having at least two spatially separated devices mutually connected by electric lines affording data transmission therebetween in both directions, the devices each having at least one data output and a data input separated from the data output, comprising an optocoupler and an electrical receiving unit included in at least part of the devices, said optocoupler having an input connected to the data input of said one device, and having an output connected to said electrical receiving unit of said one device, the data inputs and the data outputs of each of said spatially separated devices being insulated from one another and the data outputs of one of the spatially separated devices being connected with the respective data inputs of another one of the devices, and being similarly connected in the opposite direction, the electric line connecting a pair of devices having a shielding connected only to equipment ground of a single one of said spatially separated devices.

Claim 4

Data transmission system having at least two spatially separated devices mutually connected by electric lines affording data transmission therebetween in both directions, the devices each having at least one data output and a data input separated from the data output, comprising an optocoupler and an electrical receiving unit included in at least part of the devices, said optocoupler having an input connected to the data input of said one device, and having an output connected to said electrical receiving unit of said one device, the data inputs and the data outputs of each of said spatially separated devices being insulated from one another and the data outputs of one of the spatially separated devices being connected with the respective data inputs of another one of the devices, and being similarly connected in the opposite direction, the electric line connecting a pair of devices having a shielding connected only to equipment ground of a single one of said spatially separated devices.

Claim 5

Data transmission system according to claim 2 wherein the electric lines comprise shielded cables isolated from one another for the data transmission between the spatially separate devices of a respective pair thereof, said cables having shielding connected to said equipment ground only at an end of said cables which is connected to the data output of the device of the respective pair of spatially separate devices connected to said cables.

Claim 6

Data transmission system according to claim 2 wherein the electric lines comprise shielded cables isolated from one another for the data transmission between the spatially separate devices of a respective pair thereof, said cables having shielding connected to said equipment ground only at an end of said cables which is connected to the data input of the device of the respective pair of spatially separate devices connected to said cables.

Claim 7

Data transmission system according to claim 1 further comprising at least one device disposed at a close distance to a respective one of said spatially separated devices and having data outputs and a data sender connected at its input to said data output, and wherein said data sender, said optocoupler and said electrical receiving unit connected to said data sender operate in push-pull connection.

Claim 8

Data transmission system according to claim 2 further comprising at least one device disposed at a close distance to a respective one of said spatially separated devices and having data outputs and a data sender connected at its input to said data output, and wherein said data sender, said optocoupler and said electrical receiving unit operate in push-pull connection.