Fault tolerant computer employing double-redundant structure
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United States of America Patent
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Dec 25, 2001
Grant Date -
N/A
app pub date -
Nov 6, 1998
filing date -
Nov 7, 1997
priority date (Note) -
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Abstract
A fault tolerant computer comprising plural operation controllers is provided, which can judge and separate a damaged element by using a double-redundant structure without using a triple or greater-redundant structure. The computer comprises two judgment sections corresponding to each operation controller in the double-redundant structure, and each judgment section compares an output from the operation controller connected to the present judgment section with an output from the operation controller connected to the other judgment section, wherein one judgment section receives a signal indicating a comparison result from the other judgment section, and collates this signal and a comparison result obtained in the present judgment section with reference to additional diagnosis information so as to judge whether the output from the operation controller connected to the present judgment section is correct.
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