Watchdog timer that is disabled upon receiving sleep status signal from monitored device wherein monitored device is not responsive to time-out of watchdog timer
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United States of America Patent
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Feb 18, 2003
Grant Date -
N/A
app pub date -
Oct 18, 1999
filing date -
Oct 18, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system comprises a first device and a second device. The first device operates in a power management environment and has a sleep status signal for indicating a sleep status to the second device. The sleep status indicates if the first device is in a sleep state or normal operation state. The second device is coupled to the first device and checks for malfunctions of the first device. The second device only checks for malfunctions of the first device if the first device is in the normal operation state.
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