Siemens Aktiengesellschaft

Dieter Niethammer

Werner Paetsch

A circuit arrangement for data transmission systems is described wherein the transmission of excessively faulty data signals is recognized and prevented, thereby stopping the transmission of senseless text. A fault discriminator emits a fault signal which is subsequently integrated. The integrated fault signal, if it exceeds a predetermined value, triggers a threshold value stage to produce a blocking signal. The blocking signal acts on the circuitry in a data sink, e.g., a teleprinter, to suppress the processing of the received data.

Circuit arrangement for the reception of data

A circuit arrangement in a data transmission system for selecting a diversity channel is described. The transmitted information and parity bits are applied in the receiver, over a channel switch and a code frame switch in serial fashion, to a parity bit register and an information bit register. Inputs to a first parity stage are connected to outputs of a number of cells of a first part of the parity bit register and to n1 cells of a first part of the information bit register. A code frame switch connects each channel to a second part of the parity bit register and a second part of the information bit register. A number of cells of the second part of the information bit register and the output of the first parity stage are connected to a further parity stage assigned to each diversity channel. The outputs of the further parity stages are connected to a quality evaluation stage which produces control signals with which the channel switch switches through one of the diversity channels.

Growing community of inventors

Munich, Germany

Dieter Niethammer