Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-07-24
2008-08-05
Swarthout, Brent (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C323S285000, C324S522000, C324S701000, C361S092000
Reexamination Certificate
active
07408475
ABSTRACT:
In a power supply monitoring device, a power supply voltage monitoring portion always monitors a power supply voltage supplied to a monitored circuit and outputs a voltage reduction signal when detecting that the power supply voltage is reduced below a predetermined threshold (e.g. a second voltage higher than a voltage guaranteeing a normal operation of the monitored circuit and lower than a rated voltage). A monitoring controller having received the voltage reduction signal determines whether or not an operational malfunction has occurred in the monitored circuit by comparing operation data of the monitored circuit with reference data of the monitoring controller itself. Also, the monitoring controller executes recovery processing (reset processing or reference data overwrite processing) suitable for the monitored circuit referring to a prestored recovery processing type specific to the monitored circuit when detecting an operational malfunction of the monitored circuit.
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patent: 7369382 (2008-05-01), Scheikl et al.
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Chikazawa Tsutomu
Kaiga Takashi
Katayanagi Yukio
Kayama Ryuji
Shimizu Noboru
Fujitsu Limited
Staas & Halsey , LLP
Swarthout Brent
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