Active Region Display Rendering for AR Bandwidth and Power Limits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic displays, particularly in augmented reality devices, face challenges with high computational, power, and transmission bandwidth demands due to the need for high pixel density and refresh rates across the entire display area, which are often beyond the capabilities of small, lightweight devices.
Innovation Solution
Displaying content at a higher spatiotemporal density only within active regions, where virtual objects are present, reduces computational load, power requirements, and transmission bandwidth by rendering and transmitting visual content at lower rates for inactive regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high pixel density and high refresh rate are applied across the entire display area, then display quality and natural appearance of virtual content are improved, but computational resources, power consumption, and transmission bandwidth are excessively burdened
Solution Approach 1:
The display area is segmented into active regions (where virtual content is displayed) and inactive regions (transparent areas). Different pixel densities and refresh rates are applied to each segment, with high quality settings only for active regions and reduced settings for inactive regions, thereby reducing overall power consumption while maintaining display quality where needed.
Solution Approach 2:
Different quality parameters (pixel density, refresh rate) are applied locally to different regions of the display based on their functional requirements. Active regions receive high pixel density and high refresh rate for natural appearance, while inactive regions use lower settings to conserve power and computational resources.
2Manufacturing precision
If high pixel density and high refresh rate are applied across the entire display area, then display quality is improved, but data processing and transmission bandwidth requirements increase significantly
Solution Approach 1:
The display data transmission is segmented by region type. High-resolution data is transmitted only for active regions containing virtual content, while inactive regions transmit minimal or no data. This segmentation dramatically reduces the total quantity of data that must be processed and transmitted while maintaining high pixel density where required.
3Reliability
If high refresh rate is applied across the entire display area, then motion blur artifacts are avoided and virtual content appears natural, but computational power and processing requirements exceed device capabilities
Solution Approach 1:
The refresh rate requirement is segmented by display region. Active regions experience high refresh rates (e.g., 90Hz or 120Hz) to prevent motion blur and maintain natural appearance of virtual content, while inactive regions operate at lower refresh rates or remain static. This segmentation maintains reliability for avoiding artifacts in critical areas while reducing overall computational power requirements to match device capabilities.
Data Source
AI summary
A system is disclosed, including a display, a processor and a memory. The memory stores instructions that, when executed by the processor, configure the system to perform operations. Active region data is generated that includes, for each of one or more active regions, active region location data and active region content. The active region data is transmitted to a display having a display area. For each active region, the active region content is displayed at an active region location of the display area based on the active region location data, the active region content being displayed at a higher spatiotemporal information density than content displayed in the display area outside of the active regions.