Temperature-based CPU operation frequency controller of a CPU powered by a CPU power supply to protect against multiple circuit overheating
First Claim
1. A multiple circuit overheating protection system for protecting against overheating of a CPU when an operation frequency is changed in accordance with a voltage variation of driving power, comprising:
- a CPU temperature sensor to detect a temperature of the CPU;
a reference temperature sensor to detect a temperature of a circuit block heated due to the operation frequency of the CPU;
a comparing part to output a signal of a higher temperature value obtained by comparing temperature values detected by the CPU temperature sensor and the reference part temperature determining sensor; and
a CPU power supply to supply a stepwise decreasing driving power to decrease the operation frequency of the CPU in a stepwise fashion when the temperature value increases based on the signal for the higher temperature value outputted from the comparing part to provide overheating protection of the CPU and the circuit block,wherein the comparing part comprises;
a comparing unit, to compare the temperature value of the CPU temperature sensor and the reference part temperature determining sensor to provide a temperature variation signal in accordance with a predetermined scheme; and
a quantization unit, comprising;
a micom having an A/D input pin to receive the temperature variation signal outputted from the comparing unit, and outputting a control signal as a digital driving signal; and
a D/A converter, converting the digital driving signal to an analog driving signal supplied to the CPU power supply to enable the driving voltage power of the CPU to be decreased in a stepwise fashion when a temperature value increases, in accordance with the temperature variation signal.
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Accused Products
Abstract
A system for protecting against overheating of a CPU whose operation frequency is changed due to voltage variation of a driving power, includes a CPU temperature sensor to detect the temperature of the CPU, a reference temperature sensor to detect the temperature of a circuit block or multiple circuits heated due to the operation frequency of the CPU, a comparing part to output a signal indicating a higher temperature of the temperature of the CPU and the temperature of the circuit block or multiple circuits by comparing temperature values detected by the respective CPU and reference temperature sensors, and a CPU power supply to supply a stepwise decreasing driving power to decrease the operation frequency of the CPU in a stepwise fashion when the temperature value increases based on the signal indicating the higher temperature indicated by the comparing part.
50 Citations
14 Claims
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1. A multiple circuit overheating protection system for protecting against overheating of a CPU when an operation frequency is changed in accordance with a voltage variation of driving power, comprising:
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a CPU temperature sensor to detect a temperature of the CPU; a reference temperature sensor to detect a temperature of a circuit block heated due to the operation frequency of the CPU; a comparing part to output a signal of a higher temperature value obtained by comparing temperature values detected by the CPU temperature sensor and the reference part temperature determining sensor; and a CPU power supply to supply a stepwise decreasing driving power to decrease the operation frequency of the CPU in a stepwise fashion when the temperature value increases based on the signal for the higher temperature value outputted from the comparing part to provide overheating protection of the CPU and the circuit block, wherein the comparing part comprises; a comparing unit, to compare the temperature value of the CPU temperature sensor and the reference part temperature determining sensor to provide a temperature variation signal in accordance with a predetermined scheme; and a quantization unit, comprising; a micom having an A/D input pin to receive the temperature variation signal outputted from the comparing unit, and outputting a control signal as a digital driving signal; and a D/A converter, converting the digital driving signal to an analog driving signal supplied to the CPU power supply to enable the driving voltage power of the CPU to be decreased in a stepwise fashion when a temperature value increases, in accordance with the temperature variation signal. - View Dependent Claims (2, 3, 4)
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5. A temperature-based CPU operation frequency controller of a CPU powered by a CPU power supply to protect against multiple circuit overheating, comprising:
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a CPU temperature sensor to detect a temperature of the CPU and output a first signal; a reference temperature sensor to detect a temperature of a predetermined circuit block and output a second signal; a comparison-quantization unit to determine a higher signal of the first signal and the second signal to provide the higher signal as a temperature signal, and to quantize the temperature signal to output a control signal to the CPU power supply wherein the control signal controls a driving power provided to the operation frequency controller to provide overheating protection of the CPU and the predetermined circuit blocks, wherein the comparison-quantization unit comprises; a comparing unit, to compare the first signal and the second signal to provide the temperature variation signal in accordance with the predetermined scheme; and a quantization unit, comprising; a micom having an A/D input pin to receive the temperature variation signal outputted from the comparing unit, and outputting a control signal as a digital driving signal; and a D/A converter, converting the digital driving signal to an analog driving signal supplied to the CPU power supply to enable the driving voltage power of the CPU to be decreased in a stepwise fashion when a temperature value increases, in accordance with the temperature variation signal. - View Dependent Claims (6)
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7. A temperature-based CPU operation frequency controller of a CPU powered by a CPU power supply to protect against multiple circuit overheating, comprising:
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a CPU temperature sensor to detect a temperature of the CPU and output a first digital signal; a reference temperature sensor to detect a temperature of a predetermined circuit block and output a second digital signal; and a comparator to output a control signal to the CPU power supply based on a comparison of the first digital signal and the second digital signal, wherein the control signal controls a driving voltage power provided to the operation frequency controller to provide overheating protection of the CPU and the predetermined circuit blocks, wherein the comparator comprises; a comparing unit, to compare the first digital signal and the second digital signal to provide a temperature variation signal in accordance with a predetermined scheme; and a quantization unit, comprising; a micom having an A/D input pin to receive the temperature variation signal outputted from the comparing unit, and outputting a control signal as a digital driving signal; and a D/A converter, converting the digital driving signal to an analog driving signal supplied to the CPU power supply to enable the driving voltage power of the CPU to be decreased in a stepwise fashion when a temperature value increases, in accordance with the temperature variation signal. - View Dependent Claims (9)
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8. A computer-readable medium having stored thereon computer executable instructions for temperature-based controlling an operation frequency of a CPU powered by a CPU power supply using a voltage variation of driving voltage power to protect against multiple circuit overheating, comprising:
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detecting a temperature of the CPU; detecting a reference part temperature of a predetermined circuit block; comparing the temperature of the CPU with the reference part temperature of the predetermined circuit block to determine a temperature variation signal based on the temperature of the CPU with the reference part temperature of the predetermined circuit block;
outputting the temperature variation signal and converting the temperature variation signal to a digital driving signal; andoutputting a digital driving signal to control a driving voltage power provided by the CPU power supply to an operation frequency controller of the CPU to enable the driving voltage power of the CPU to be decreased in a stepwise fashion when a temperature value increases, in accordance with the temperature variation signal, to provide overheating protection of the CPU and the predetermined circuit block. - View Dependent Claims (10, 11)
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12. A method of temperature-based controlling an operation frequency of a CPU powered by a CPU power supply using a voltage variation of driving voltage power to protect against multiple circuit overheating, comprising:
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detecting a temperature of the CPU; detecting a reference temperature of a predetermined circuit block; comparing the temperature of the CPU with the reference part temperature of the predetermined circuit block to determine a temperature variation signal based on a higher temperature of the temperature of the CPU and the reference part temperature of the predetermined circuit block; utilizing a quantization unit, comprising a micom having an A/D input pin to receive the temperature variation signal outputted from the comparing unit, and outputting a control signal as a digital driving signal; and utilizing a D/A converter, to convert the digital driving signal to an analog driving signal supplied to the CPU power supply to enable the driving voltage power of the CPU to be decreased in a stepwise fashion when a temperature value increases, in accordance with the temperature variation signal.
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13. A temperature-based CPU operation frequency controller of a CPU powered by a CPU power supply to protect against multiple circuit overheating, comprising:
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a CPU temperature sensor to detect a temperature of the CPU and output a first digital signal; a reference part temperature determining sensor to detect a temperature of a predetermined circuit block and output a second digital signal; and a comparator to output a quantized, multi-step control signal to the CPU power supply based on a comparison of the first digital signal and the second digital signal, wherein the control signal controls a driving power provided to the operation frequency controller to provide overheating protection of the CPU and the circuit blocks, wherein the comparator comprises; a comparing unit, to compare the first signal and the second signal to provide a temperature variation signal in accordance with a predetermined scheme; and a quantization unit, comprising; a micom having an A/D input pin to receive the temperature variation signal outputted from the comparing unit, and outputting a control signal as a digital driving signal; a D/A converter, converting the digital driving signal to an analog driving signal supplied to the CPU power supply to enable the driving voltage power of the CPU to be decreased in a stepwise fashion when a temperature value increases, in accordance with the temperature variation signal.
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14. A temperature-based CPU operation frequency controller of a CPU powered by a CPU power supply to protect against multiple circuit overheating, comprising:
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a first sensor to detect a temperature of the CPU; a second sensor to detect a temperature of a predetermined circuit block; and a comparator to output a quantized voltage to the CPU power supply based on a higher temperature of the temperature of the CPU and the temperature of the predetermined circuit block to adjust the CPU operation frequency controller to provide overheating protection of the CPU and the circuit block, wherein the comparator comprises; a comparing unit, to compare the temperature of the CPU and the temperature of the predetermined circuit block to provide a temperature variation signal in accordance with a predetermined scheme; and a quantization unit, comprising; utilizing a quantization unit, comprising a micom having an A/D input pin to receive the temperature variation signal outputted from the comparing unit, and outputting a control signal as a digital driving signal; and utilizing a D/A converter, to convert the digital driving signal to an analog driving signal supplied to the CPU power supply to enable the driving voltage power of the CPU to be decreased in a stepwise fashion when a temperature value increases, in accordance with the temperature variation signal.
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Specification