Reliability is one of the key issues in widely application of real-time video transmission. The fault-tolerant mechanisms of 1394b optical bus protocol are investigated for 1394b optical bus-based real-time video. In addition, a method of hardware redundancy fault-tolerant is proposed. The hardware topology is built with embedded video function nodes, and fault-tolerant control software is realized on VC platform. Furthermore, the 1394b optical bus-based video transmission is demonstrated by experiment, due to which, performances of fault-tolerant for the transmission is evaluated.

The high-speed serial data bus, IEEE-1394b, is one of the most popular bus standards in avionics system, but it cannot achieve multiplexing transmission. To solve this problem, a multi-subnet partition algorithm based on the Theory of Queues (TQ) is implemented in this paper. By utilizing matrix to describe the system topology and transmission bandwidth between nodes, the algorithm can efficiently result in the minimum delay system topology. Simulation results show that the algorithm can successfully determine the topologies with minimum delay for different data transmission bandwidth matrix of the multi-network system, which are consistent with the analysis. This verifies the correctness of the algorithm.