Redundant status indicators for fault tolerance
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United States of America Patent
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-
Oct 31, 2000
Grant Date -
N/A
app pub date -
Jul 21, 1999
filing date -
Jul 21, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system includes multiple modules, each powered by a different power source, and a status indicator for a first of the modules. Any of the multiple modules can drive the status indicator. Each of the modules monitors the operation of the first module, driving the status indicator when the first module fails. Thus, even if a failure within the first module prevents the first module from driving the status indicator (e.g., a power failure), the status indicator is still driven by a second module.
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