GPU Power Management via Display Memory Segmentation
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Solution Overview
Problem
Existing computer display methods consume high power when showing a single page for an extended period, leading to wasteful energy usage.
Innovation Solution
A computer system with a graphic card, display memory, and a power management module that allows the graphic processing unit to enter a power-saving mode while maintaining the display memory in a power-supply state, using a buffer to store and display data when predetermined conditions are met, such as prolonged page display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the graphic processing unit remains in power-supply state to display content continuously, then the display can maintain operation, but power consumption increases significantly
Solution Approach 1:
The patent segments the graphic card into two independently controllable parts: the graphic processing unit and the display memory. This allows the graphic processing unit to be turned off (entering power-saving mode) while the display memory remains powered on to maintain displayed content, thereby reducing overall power consumption while preserving display functionality.
Solution Approach 2:
The patent applies different power supply states to different components of the graphic card based on their specific needs. The display memory maintains power-supply state to preserve content, while the graphic processing unit enters non-power-supply state to save energy. This localized differentiation of power states optimizes the balance between display continuity and energy savings.
2Use of energy by moving object
If the graphic card enters power-saving mode to reduce power consumption, then energy usage decreases, but the display may lose displayed content
Solution Approach 1:
By segmenting the graphic card into the graphic processing unit and display memory with independent power control, the system can safely turn off the graphic processing unit for power-saving while the display memory remains powered to preserve displayed content, eliminating the trade-off between power savings and content retention.
Solution Approach 2:
Before the graphic processing unit enters power-saving mode, the system has already transferred the necessary display content to the display memory. This preliminary action ensures that when the graphic processing unit is powered down, the display memory still contains all necessary content to maintain the display, preventing any information loss.
3Loss of information
If the display memory remains in power-supply state to maintain content, then displayed content is preserved, but power consumption cannot be reduced
Solution Approach 1:
The patent enables independent power management of the graphic processing unit and display memory through segmentation. This allows the system to keep only the display memory powered on (maintaining content retention) while turning off the graphic processing unit (reducing power consumption), achieving both goals simultaneously.
Solution Approach 2:
The system applies local quality by providing different power supply states to different components: the display memory receives continuous power to maintain content, while the graphic processing unit receives reduced or no power to save energy. This localized power management strategy optimizes the balance between content retention and energy efficiency.
Data Source
AI summary
A computer, monitor and a display method of the computer are provided. The computer includes a display card with a graphics processing unit (GPU) and a display memory used to receive the data to be displayed, process the data to be displayed and output the processed data to be displayed on the monitor; a power management module is used to manage the power supply status of the GPU and the display memory; a central processing unit (CPU) used to control the display card to enter power saving mode through the power management module when the predetermined conditions are met, make the GPU in a non-power-supply status and the display memory in a power-supply status.