PROCESSOR AND TEMPERATURE ESTIMATION METHOD

A temperature sensor (120) measures a temperature of a particular position in a processor. A total heat measurement unit (130) measures the total heat of the processor. According to the detection temperature of the particular position by the temperature sensor (120), a temperature estimation unit (1...

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Main Authors TAKIGUCHI, IWAO, ADACHI, KENICHI, IMAI, ATSUHIKO, TAMURA, TETSUJI, YAZAWA, KAZUAKI
Format Patent
LanguageEnglish
French
German
Published 05.06.2013
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A temperature sensor (120) measures a temperature of a particular position in a processor. A total heat measurement unit (130) measures the total heat of the processor. According to the detection temperature of the particular position by the temperature sensor (120), a temperature estimation unit (140) estimates the temperature of a plurality of hot spots generated in the processor and calculates the maximum temperature of the processor. According to the total heat of the processor, the temperature estimation unit (140) references the temperature estimation coefficient at maximum load (162) stored in a storage unit (160) and the temperature estimation coefficient at the individual load (164) while switching between them and applies a temperature estimation function for converting the sensor temperature into the hot spot temperature. When the maximum temperature of the processor estimated by the temperature estimation unit (140) exceeds a limit temperature, an operation frequency control unit (150) performs control to lower the processor operation frequency.
Bibliography:Application Number: EP20050736706