METHOD AND APPARATUS TO CALIBRATE THERMOMETER
First Claim
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1. A computer system comprising:
- a thermometer having a computation unit capable of calculating a constant value of a slope of a linear temperature equation from temperatures values of first and second set points and capable of calculating a constant value of an offset of a temperature linear equation from temperatures values of the first and second set points operably coupled to a first temperature sensor to measure at a predetermined processor power state a first temperature read value to be used as a first set point in a temperature calibration process and to a second temperature sensor to measure a second temperature read value at a stabilized temperature state of processor, to be used as a second set point in a temperature calibration process; and
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a processor capable of operating a Binary Operating System (BIOS) procedure to calculate a calibrated temperature read value according to first and second temperature read values of the first and second temperature sensor.
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Abstract
Briefly, a processor and a method to calibrate a temperature reading of a digital thermometer. The calibration is done by using a first temperature value measured by an analog temperature sensor located at one point on the processor die and a second temperature value measured by a digital temperature sensor located at a second point of the processor die.
12 Citations
31 Claims
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1. A computer system comprising:
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a thermometer having a computation unit capable of calculating a constant value of a slope of a linear temperature equation from temperatures values of first and second set points and capable of calculating a constant value of an offset of a temperature linear equation from temperatures values of the first and second set points operably coupled to a first temperature sensor to measure at a predetermined processor power state a first temperature read value to be used as a first set point in a temperature calibration process and to a second temperature sensor to measure a second temperature read value at a stabilized temperature state of processor, to be used as a second set point in a temperature calibration process; and
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a processor capable of operating a Binary Operating System (BIOS) procedure to calculate a calibrated temperature read value according to first and second temperature read values of the first and second temperature sensor. - View Dependent Claims (2, 3, 4, 7, 9, 10, 11)
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5-6. -6. (canceled)
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8. (canceled)
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12. A method comprising:
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measuring a first temperature value of a processor at a first point on a processor at a predetermined power state of the processor to provide a first set point;
measuring a second temperature value of the processor at a second point on the processor after processor power up when the temperature of the processor is stabilized to provide a second set point;
calculating a constant value of a slope of a linear temperature equation from temperature values of the first and second set points;
calculating a constant value of an offset of the linear temperature equation from temperature values of the first and second set point;
storing the constant values of the slope and the offset in a memory; and
calibrating a temperature read value based on the first and second temperature values. - View Dependent Claims (13, 14, 15, 16, 18, 21)
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17. (canceled)
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19-20. -20. (canceled)
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22. A computer platform comprising:
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a processor; and
a thermometer having a computation unit capable of calculating a constant value of a slope of a temperature linear equation from temperatures values of the first and second set points and capable of calculating a constant value of an offset of the temperature linear equation from temperatures values of the first and second set points, operably coupled to a first temperature sensor to measure at a predetermined processor power state a first temperature read value to be used as a first set point in a temperature calibration process and to a second temperature sensor to measure at a stabilized temperature state of the processor a second temperature read value to be used as a second set point in a temperature calibration process, wherein the thermometer is capable of providing a calibrated temperature read value according to first and second temperature read values of the first and second temperature sensors. - View Dependent Claims (23, 24, 27, 29, 30, 31)
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25-26. -26. (canceled)
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28. (canceled)
Specification