Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2005-08-18
2008-11-18
Elamin, Abdelmoniem (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C702S130000, C702S132000, C340S870160, C340S870170, C327S513000, C327S538000, C323S315000
Reexamination Certificate
active
07454640
ABSTRACT:
A system and method is disclosed that provides a thermal shutdown circuit that generates a plurality of temperature warning flag signals. Each temperature warning flag signal represents a different temperature. The thermal shutdown circuit comprises a plurality of inverter circuits in which each inverter circuit has a different temperature turn-on threshold. A temperature to binary code converter receives the temperature warning flag signals from the inverter circuits and generates a plurality of binary coded signals that represent a temperature that is detected by the thermal shutdown circuit. A host controller unit uses the temperature information from the binary coded signals to shut down subsystems in advance of an abrupt thermal shutdown of a system.
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patent: 6717530 (2004-04-01), Schmidt et al.
patent: 6816351 (2004-11-01), Frank et al.
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patent: 6867573 (2005-03-01), Carper
Elamin Abdelmoniem
National Semiconductor Corporation
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