Multi-Display Source Device Rendering for Mixed Refresh Rates
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Solution Overview
Problem
Electronic devices struggle to maintain image quality when outputting content to multiple displays with different refresh rates, leading to performance issues due to the need to synchronize images across displays with varying specifications.
Innovation Solution
A display system and method where a source device identifies the refresh rates of connected displays, renders image data based on the display with the highest refresh rate, and transmits this data in synchronization with the respective refresh rates of other displays, adjusting the frame transmission to prevent image quality deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If content is output based on a display with low specification among multiple displays, then image quality on low-spec displays is maintained, but image quality on high-spec displays deteriorates
Solution Approach 1:
The source device performs separate rendering operations for different display specifications. High-resolution rendering is performed for high-spec displays while low-resolution rendering is performed for low-spec displays, allowing each display to receive optimally quality-matched content rather than forcing a single quality level across all displays
Solution Approach 2:
The rendering process is segmented into multiple quality levels corresponding to different display specifications. The source device divides the rendering task into high-quality rendering paths for high-spec displays and standard-quality rendering paths for low-spec displays, enabling simultaneous optimization for multiple display types
2Adaptability or versatility
If image data is transmitted to multiple displays with different refresh rates, then all displays can show content, but image quality deteriorates due to synchronization issues
Solution Approach 1:
The system dynamically adjusts the rendering resolution and frame transmission rate based on the refresh rate capabilities of each connected display. When a high refresh rate display is detected, the source device increases rendering quality and frame rate; when low refresh rate displays are detected, it reduces the frame rate to match, preventing quality deterioration while maintaining multi-display compatibility
Solution Approach 2:
The source device changes rendering parameters (resolution, frame rate, quality settings) based on the detected refresh rates of connected displays. This parameter adaptation allows the system to optimize image quality for each display's capabilities while maintaining synchronized operation across multiple displays with different specifications
Data Source
AI summary
A display system according to an embodiment disclosed in the disclosure includes a sink device including a plurality of displays, the plurality of displays including a display having a high refresh rate compared to at least one other display having a low refresh rate among the plurality of displays and a source device operably coupled to the plurality of displays, and the source device renders the image data based on the display having the high refresh rate among the plurality of displays, and transmits at least a portion of the rendered image data to the plurality of displays in synchronization with respective refresh rates of the at least one other display. Additional various embodiments identified through the specification are possible.