Patent ID: 11949536
Assignee: DEUTSCHE TELEKOM AG
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A system for transmitting digital subscriber connection signals to an interface of an end user via a coaxial cable, wherein the coaxial cable has an overall frequency range configured for transmitting TV signals to the interface of the end user in an upper frequency range of the overall frequency range, wherein the interface comprises a customer terminal output, wherein the system comprises:
at least one distribution point unit (DPU);
the coaxial cable; and
the interface having the customer terminal output;
wherein the system is configured such as to cause:
a distribution point units (DPU) to supply first balanced subscriber connection signals to the coaxial cable by a first transformation, directed toward the customer terminal output, of the first balanced subscriber connection signals into unbalanced subscriber connection signals by means of a distribution point balanced-to-unbalanced transformer device, (balun device);
the unbalanced subscriber connection signals to be coupled into the coaxial cable into a lower frequency range of the overall frequency range, wherein the lower frequency range is below the upper frequency range without any overlap,
a reflection of the unbalanced subscriber connection signals in the coaxial cable to be attenuated by means of a filtering device;
a second transformation, directed toward the customer terminal output, of the unbalanced subscriber connection signals into second balanced subscriber connection signals to be carried out by means of a balun devices assigned to the interface, wherein the input impedance of the filtering device is adjusted with respect to reflections from the direction of the customer terminal output; and
the second balanced subscriber connection signals to be separately made available at the customer terminal output.