Graphics Processor Port Switching for Multi-Display Support
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Solution Overview
Problem
Computing devices with multiple graphics processors can only support a limited number of display devices, as the higher-performance graphics processor disables the lower-performance one, limiting the maximum number of displays that can be connected.
Innovation Solution
A system and method that automatically enable the second graphics processor and switch one of the display output ports from the first, higher-performance graphics processor to the second, lower-performance graphics processor when more displays are connected than can be supported by the first processor, allowing both processors to be used simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the higher-performance graphics processor is used to drive all display devices, then graphic rendering quality is improved, but the maximum number of supported display devices is limited
Solution Approach 1:
The patent divides the display devices into two groups: some are driven by the first graphics processor (higher-performance) and others by the second graphics processor (lower-performance). This segmentation allows the system to support more display devices than a single processor could handle alone, while maintaining high rendering quality on at least some displays.
Solution Approach 2:
The patent makes the first port coupled to both graphics processors, enabling it to be driven by either processor depending on system needs. This multi-functionality allows flexible allocation of display devices to different processors based on their capabilities and the number of displays connected.
2Use of energy by moving object
If the lower-performance graphics processor is disabled to reduce power consumption, then energy efficiency is improved, but the number of supported display devices is limited
Solution Approach 1:
The patent implements dynamic enabling/disabling of the second graphics processor based on the number of display devices connected. When fewer displays are connected, the second processor remains disabled to save power. When more displays are connected than the first processor can support, the second processor is automatically enabled to handle the additional displays.
Solution Approach 2:
The system monitors the number of coupled display devices and uses this feedback to automatically enable or disable the second graphics processor. This feedback mechanism ensures optimal power consumption while maintaining the ability to support multiple displays when needed.
3Adaptability or versatility
If the second graphics processor is enabled to support additional displays, then the number of supported display devices is improved, but system complexity increases
Solution Approach 1:
The patent implements automatic detection and switching functionality where the system itself monitors the number of connected displays and automatically enables the second graphics processor when needed, without requiring user intervention. The controller automatically switches ports between processors based on display connection status, simplifying user interaction despite the underlying complexity.
Data Source
AI summary
In one example in accordance with the present disclosure, a computing device is described. The computing device includes a number of ports. Each port receives a connection to a display device. A first port is coupled to the first graphics processor which supports a number of display devices and a second graphics processor. The computing device also includes a controller. The controller determines when a number of coupled display devices is greater than the number of display devices supported by the first graphics processor and switches the first port from being driven by the first graphics processor to be driven by the second graphics processor.