Hybrid low bandwidth transport for video, screen and sensor signals

Remote engineering systems are a valuable tool to give visual assistance and remote support e.g. in industrial service or Teleteaching. The origins of the OMA system (Online Maintenance Assistance) are the outcome of a european project for aircraft teleservice. It allows collaboration between mobile operators and supporting experts. An enhanced version supports sensor data exchange and context awareness. In Teleteaching the system is used to demonstrate experiments to remote viewers, which can actively control parts of the experiment and see the outcomes. The hybrid low bandwidth transport is an important base of the OMA system and combines different signals in a secure wide area tunnel. By using an adaptive coding control bandwidth priorities and compression are accommodated to the dynamic signal properties and the current working situation.