Low cost redundant communications system

Details Low cost redundant communications system Low cost redundant communications system

1996-10-01

2000-10-17

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

34082505, 34082502, 39520001, 370431, 370451, 370458, 370254, H04L 1200, G06F 1500

Patent

active

06133846&

ABSTRACT:
A communications system capable of providing enhanced data integrity and reliability through redundant buses, and a network interface controller for use therewith. Redundant conductors conforming to well-known ethernet standards interconnect electronics components. Each component communicates with the conductors through a single network interface card (NIC). Each NIC comprises an ethernet compliant transceiver for each ethernet conductor in communication with the component. Microcontrollers embedded in each NIC synchronously and deterministically place data on the ethernet conductors according to a timing scheme stored in a non-volatile memory means. A heartbeat/power monitor is also provided to ensure that data cannot be transmitted in the event of a microcontroller failure. The communications system provides a high degree of redundancy and fault-tolerance and is therefore well-suited to critical applications in avionics communication.

REFERENCES:
patent: 4063220 (1977-12-01), Metcalfe et al.
patent: 5377109 (1994-12-01), Baker et al.
patent: 5379289 (1995-01-01), DeSouza et al.
patent: 5386503 (1995-01-01), Staggs et al.

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