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Abstract

Method and apparatus for use of the dual redundant bus network utilizing time and frequency multiplexing techniques to provide a high bit rate system that maintains a lower bit error rate with good fault tolerance by sending a low speed message on one bus and a high speed message on the remaining bus then operating at a dual bus mode and for reducing the speed of the high speed to aerate between the high speed and low speed message rates and multiplexing the low speed and reduced high speed messages when a fault condition is detected on one of the buses. Techniques are provided for continuously monitoring the buses to identify the least recently used (LRU) to facilitate bus selection and selection of one of the dual bus and concurrent modes for operation.

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First Claim