Graphic Card Display Memory Update in Low Power Sleep Mode
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Solution Overview
Problem
Existing computer systems cannot update display information when in low power consumption mode, as both the CPU and GPU are in sleep status, preventing dynamic updates on the display screen.
Innovation Solution
A computer system with a graphic card and display apparatus that includes an input processing module to acquire and update display information in the display memory, allowing for updates to be outputted to the display screen while maintaining low power consumption, even when the CPU and GPU are in sleep mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the CPU and GPU are both in sleep status to achieve energy saving, then power consumption is reduced, but display information cannot be updated
Solution Approach 1:
The patent divides the graphic card into separate functional modules with independent power control: the graphic processing unit (GPU), the display memory, and the conversion module. This segmentation allows each module to be independently powered on or off, enabling the display memory and conversion module to remain active while the GPU enters sleep mode, thus maintaining display update capability while reducing overall power consumption.
Solution Approach 2:
The patent applies different power states to different parts of the graphic card based on their specific functional requirements. The display memory and conversion module maintain working status locally to preserve display update functionality, while the GPU enters sleep mode to save energy. This local differentiation of operational states resolves the contradiction between energy saving and display update capability.
2Adaptability or versatility
If the CPU is woken up to update display information, then display information can be updated, but energy saving is compromised
Solution Approach 1:
The patent introduces an independent input processing module that acts as an intermediary between user input and the display memory. This module can process input signals and update display information without requiring the CPU to wake up, thereby maintaining display update capability while preserving the energy-saving sleep state of the main system.
Solution Approach 2:
The display memory and conversion module are designed to self-update display information through the independent input processing module without requiring CPU intervention. The system performs self-service updates, allowing the display to respond to user input while the CPU remains in sleep mode, thus avoiding the energy cost of waking up the main processor.
3Use of energy by moving object
If the graphic processing unit is in sleep mode, then energy consumption is reduced, but display information cannot be processed
Solution Approach 1:
The patent segments the graphic card functionality so that image processing is handled by the GPU while display information storage and output are handled by the display memory and conversion module. This segmentation allows the GPU to enter sleep mode for energy saving while the display memory and conversion module continue to process and output display information independently.
Solution Approach 2:
The patent extracts the display information processing function from the GPU by providing a dedicated display memory and conversion module that can operate independently. This extraction allows the GPU to be turned off for energy saving while the display subsystem maintains its own processing capability for displaying information.
Data Source
AI summary
A computer, a graphic card, a display apparatus and a method of updating information is described, wherein, the computer has a first status and a second status, and the system power consumption of computer in the first status is larger than the system power consumption of computer in the second status. The computer includes a graphic card having display memory and a display apparatus connected to the graphic card, and further includes an input processing module for acquiring input information when the computer is in the second status, and updating first display information stored in the display memory outputted to the display apparatus according to the input information to obtain second display information. The graphic card outputs the second display information to the display apparatus when the computer is in the second status.