Power Saving Controller for Mobile Device Insensible Resources
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Solution Overview
Problem
Mobile devices face challenges in reducing power consumption while maintaining operational speed, as existing methods like dynamic voltage and frequency scaling require additional power to monitor task loads, degrading efficiency.
Innovation Solution
An electronic system that switches user insensible resources from normal power mode to power saving mode when user sensible output signals remain unchanged, using a controller to manage power saving signals and adjust operation modes based on reference time periods, thereby reducing power consumption without affecting user-perceptible performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If dynamic voltage and frequency scaling is used to reduce power consumption, then power consumption decreases, but additional power is required to monitor task loads which degrades efficiency
Solution Approach 1:
The patent extracts the power monitoring function from the CPU and relocates it to dedicated power monitoring circuits. This separation allows the CPU to operate in low-power modes while specialized circuits handle the monitoring task, eliminating the need for the CPU to consume additional power for monitoring purposes.
Solution Approach 2:
The patent introduces power monitoring circuits as intermediary components between the CPU and the power management system. These circuits act as mediators that monitor CPU activity and generate control signals for power adjustment without requiring the CPU itself to perform monitoring functions, thus maintaining efficiency while reducing overall power consumption.
2Speed
If user insensible resources operate in normal power mode, then operation speed is maintained, but power consumption increases
Solution Approach 1:
The patent implements dynamic power mode switching for user insensible resources based on system activity. These resources can transition between normal power mode and power saving mode depending on whether they are currently needed for user-perceptible operations, allowing the system to adapt power consumption to actual operational requirements.
Solution Approach 2:
The patent enables user insensible resources to automatically switch to power saving mode when not needed for user-perceptible output, without requiring continuous CPU intervention. The controller manages these resources autonomously based on power saving signals, reducing the overhead of power management while conserving energy.
3Use of energy by moving object
If user insensible resources switch to power saving mode, then power consumption decreases, but operation speed may be affected
Solution Approach 1:
The patent separates user-perceptible resources from user-insensible resources, allowing the latter to operate independently in power saving mode without impacting the performance of the former. This extraction ensures that power-saving operations do not degrade user-experienced performance.
Solution Approach 2:
The patent applies different operational qualities to different resource types: user-perceptible resources maintain normal operation quality to preserve user experience, while user-insensible resources operate in power-saving quality when appropriate. This localized quality differentiation allows speed reduction in non-critical resources without affecting overall user-perceptible performance.
Data Source
AI summary
An electronic system includes: a first device configured to generate an output signal in response to current input data and generate a power saving signal based on the current input data; a second device, and a controller. The output signal is perceivable using a physiological sense. The controller is configured to switch the electronic system into one of an inactive state and an active state, operate the second device during the active state in a power saving mode when the power saving signal is activated, and operate the second device during the active state in a normal power mode when the power saving signal is deactivated.