Ratio metric fault tolerant and redundant serial communication s

Details Ratio metric fault tolerant and redundant serial communication s Ratio metric fault tolerant and redundant serial communication s

1998-03-11

2000-03-28

Zweizig, Jeffrey

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 63, 327333, 327407, H03K 5153

Patent

active

060436883

ABSTRACT:
A fault tolerant communication system for transmitting a serial data signal through multiple wires regardless of whether one of the wires is open circuited, shorted to ground, shorted to a positive power supply. The system includes at least two communication lines. Each communication line is provided with identical data signals. The outputs of the communication line are adapted such that the active levels of each of the respective data signals appear within a predetermined voltage range. At least two detecting means are coupled to the communication lines. Each of the detecting means transmits one of the respective data signals only if the active levels of at least one of the respective data signals is within the predetermined voltage range. A fault is detected when the active level of any of the data signals is outside the predetermined voltage range. Combining means are coupled to each of the detecting means for combining the respective data signals from the detecting means into a single data signal. The combining means transmits the single data signal only if the active levels of at least one of the respective data signals is within the predetermined voltage range. The system ensures that the correct data signal will be transmitted despite a fault condition on one of the communication lines.

REFERENCES:
patent: 4617473 (1986-10-01), Bingham
patent: 5315185 (1994-05-01), Usimaru

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