Safety critical processor and processing method for a data processing system
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United States of America Patent
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Oct 1, 1996
Issued Date -
N/A
app pub date -
Mar 7, 1995
filing date -
Nov 30, 1992
priority date (Note) -
Expired
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Abstract
A system and method for operating application software in a safety critical environment have a data processor for effecting processing operations and an intermediate shell for interacting with an operating system and application software. A safety critical processor is receptive of a series of timing signals from the intermediate shell for determining that a time interval between two of the series of timing signals is greater than a predetermined value thereby constituting a potential safety critical failure and indicates a potential safety critical failure to the intermediate shell.
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