Transmission device for data transmission

ES3073525T3Undetermined Publication Date: 2026-07-13SIEMENS MOBILITY GMBH AT
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Patent Information

Authority / Receiving Office
ES · ES
Patent Type
Patents
Current Assignee / Owner
SIEMENS MOBILITY GMBH AT
Filing Date
2020-12-01
Publication Date
2026-07-13

AI Technical Summary

Technical Problem

Existing transmission devices for secure communication between safety-critical and open networks lack effective mechanisms to prevent unauthorized data transmission and intrusion attempts while ensuring reliable anomaly detection.

Method used

A transmission device with unidirectional transmission units and a demilitarized zone (DMZ) containing a detection unit, isolating the detection unit from both networks, allowing for anomaly detection and preventing unauthorized access, while ensuring unidirectional data flow.

Benefits of technology

Enhances security by preventing unauthorized data transmission and increasing tamper resistance, enabling reliable anomaly detection and isolation, thus improving the integrity and security of data transfer between safety-critical and open networks.

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Abstract

The invention relates to a transmission device for sending data between a first network and a second network. The transmission device comprises: a first unidirectional transmission unit that can be connected to the first network and is configured to exclusively receive data transmitted from the first network to the transmission device; a second unidirectional transmission unit that can be connected to the second network and is configured to exclusively send data from the transmission device to the second network; and an identification unit located between the first and second unidirectional transmission units, configured to receive the data received by the first unidirectional transmission unit and identify anomalies in the received data.The provided transmission device achieves reliable and optimized identification of anomalies in the first network and increases the security of the identification unit against manipulation, attacks or intrusion attempts from the second network.
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