PROCESSOR, PROCESSOR SYSTEM, TEMPERATURE ESTIMATION DEVICE, INFORMATION PROCESSING DEVICE, AND TEMPERATURE ESTIMATION METHOD

摘要

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.