Dynamic Processor Clock and Fan Speed Control for Thermal Management
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Solution Overview
Problem
Existing computing devices face overheating issues due to prolonged processing or inadequate cooling, leading to processor failure, especially in portable computers where lower clock frequencies are used to prevent overheating, which compromises processing power, and the use of cooling fans consumes battery energy.
Innovation Solution
Implementing a method to intelligently control processor clock frequency and fan speed based on monitored processor temperature, switching to slower frequencies during inactivity and reducing frequencies during high temperatures to prevent overheating while maintaining processing speed, and using a temperature-activated, variable-speed fan to conserve energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the processor clock frequency is reduced to prevent overheating, then the processor temperature is controlled, but the processing speed is compromised
Solution Approach 1:
The patent implements dynamic clock frequency adjustment based on real-time temperature monitoring. The system transitions from static clock frequencies to dynamic frequencies that automatically adapt to thermal conditions, allowing the processor to operate at high speeds when cool and reduce frequency when hot, thereby resolving the contradiction between temperature control and processing speed
Solution Approach 2:
The patent changes the clock frequency parameter dynamically based on temperature thresholds. By monitoring temperature and adjusting the clock frequency parameter accordingly, the system maintains processing speed when temperatures are acceptable while preventing overheating when thresholds are exceeded, solving the trade-off between these two parameters
2Temperature
If a cooling fan is used to prevent overheating, then the processor temperature is controlled, but battery energy is consumed
Solution Approach 1:
The patent implements self-service thermal management where the processor itself regulates its own temperature through clock frequency adjustment, eliminating the need for external cooling fans. The processor monitors its own temperature and automatically adjusts its operating frequency to maintain acceptable thermal levels, thereby preventing overheating without consuming additional energy for active cooling
Solution Approach 2:
The patent replaces the mechanical cooling fan system with an electronic/software-based thermal management approach. Instead of using a mechanical fan to physically remove heat, the system uses clock frequency adjustment to reduce heat generation at the source, substituting a passive thermal management mechanism for an active mechanical cooling system that would consume battery energy
3Productivity
If the processor operates at high clock frequency continuously, then the processing speed is maximized, but the processor overheats and may fail
Solution Approach 1:
The patent implements a feedback mechanism where the processor temperature is continuously monitored and fed back to the clock control system. This closed-loop feedback allows the system to detect temperature increases and automatically reduce clock frequency to prevent overheating, thereby maintaining both high processing speed and processor reliability through continuous adaptive adjustment
Data Source
AI summary
Improved approaches to providing thermal and power management for a computing device are disclosed. These approaches facilitate intelligent control of a processor's clock frequency and/or a fan's speed so as to provide thermal and/or power management for the computing device.