Media Processor Clock Gating for Stable Power Demand
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Solution Overview
Problem
Conventional power management systems for media processors face inefficiencies due to imbalance in performance requirements and power consumption, leading to potential damage and reduced lifespan from sudden high current peaks, as they struggle to dynamically adjust voltage and frequency according to varying operational demands.
Innovation Solution
A power management system that records the running cycle of a processing unit, generates a gating signal based on performance requirements, and adjusts the working clock using a composition unit to optimize power consumption by adjusting the cycle length of the gating signal, thereby stabilizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If voltage and frequency are increased to meet performance requirements, then processing speed is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic voltage and frequency adjustment by monitoring the media processor's task load in real-time. When the load is heavy, voltage and frequency are increased to maintain processing speed; when the load is light, they are reduced to save power. This dynamic adaptation resolves the contradiction between maintaining high processing speed and reducing power consumption.
Solution Approach 2:
The system changes the operating parameters (voltage and frequency) of the media processor based on actual performance requirements. By adjusting these parameters dynamically rather than maintaining fixed high values, the system achieves both adequate processing speed and reduced power consumption during low-demand periods.
2Use of energy by moving object
If voltage and frequency are decreased to reduce power consumption, then power efficiency is improved, but processing speed decreases
Solution Approach 1:
The system dynamically adjusts voltage and frequency based on real-time monitoring of task load. During high-demand periods, it increases these parameters to maintain processing speed; during low-demand periods, it decreases them to improve power efficiency. This ensures processing speed is only reduced when performance requirements allow.
Solution Approach 2:
The operating parameters are changed adaptively based on actual needs rather than being fixed at low values. This allows the system to achieve good power efficiency during light loads while maintaining adequate processing speed when required.
3Reliability
If the main processor monitors system conditions periodically to adjust power, then power management is achieved, but the main processor becomes overloaded
Solution Approach 1:
The patent extracts the power management function from the main processor by implementing a dedicated power management mechanism within the media processor itself. The media processor autonomously monitors its own task load and adjusts its voltage and frequency, removing the burden of periodic monitoring from the main processor and preventing it from becoming overloaded.
Solution Approach 2:
The media processor performs self-monitoring and self-adjustment of its power consumption by tracking its own task execution status. This self-service approach allows reliable power management without requiring the main processor to expend resources on monitoring and controlling the media processor.
4Productivity
If sudden high current is supplied to meet performance requirements, then processing capability is improved, but unexpected calorific capacity damages the system
Solution Approach 1:
The system performs preliminary action by gradually increasing voltage and frequency before high-performance tasks begin, rather than suddenly supplying high current. The progressive adjustment allows the system to prepare for high-power operation, reducing thermal shock and preventing unexpected calorific capacity that could damage components.
Solution Approach 2:
The patent implements beforehand cushioning by implementing gradual parameter adjustment and thermal management measures before high-current periods. This cushioning approach prevents sudden thermal spikes from causing damage, while still enabling the system to achieve high processing capability when needed.
Data Source
AI summary
Power management methods and systems. First, a running cycle of a processing unit processing a data unit is recorded. A gating signal is generated according to the running cycle and a performance requirement, and a working clock is adjusted according to the gating signal. Thereafter, the adjusted working signal is provided to the processing unit.