Foveated Display Resolution Control for Bandwidth and Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Displaying high-resolution images in electronic devices like head-mounted devices is challenging due to high image data bandwidth and power consumption requirements.
Innovation Solution
Implementing displays with regions of varying resolutions, dynamically adjustable using gate and data line driver circuitry, and varying data line lengths to reduce visible discontinuities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution images are displayed across the entire display area, then image quality is improved, but data bandwidth and power consumption increase significantly
Solution Approach 1:
The display device implements different resolution levels in different spatial regions of the display. The central region (foveated region) corresponding to the user's gaze direction is rendered at high resolution, while peripheral regions are rendered at progressively lower resolutions. This local differentiation maintains high image quality where the user actually looks while reducing data bandwidth and power consumption in regions that are less critical for visual perception.
2Measurement precision
If high-resolution images are displayed across the entire display area, then image quality is improved, but data bandwidth requirements increase significantly
Solution Approach 1:
The display device implements different resolution levels in different spatial regions of the display. The central region (foveated region) corresponding to the user's gaze direction is rendered at high resolution, while peripheral regions are rendered at progressively lower resolutions. This local differentiation maintains high image quality where the user actually looks while reducing data bandwidth and power consumption in regions that are less critical for visual perception.
3Ease of manufacture
If uniform resolution is applied across the entire display, then manufacturing is simplified, but visual continuity at resolution boundaries is compromised
Solution Approach 1:
The display device dynamically adjusts the resolution boundaries and data line configurations based on detected gaze direction. The transition regions between different resolution areas are dynamically repositioned to align with the user's foveated region, ensuring that high-resolution areas are always positioned where the user is looking. This dynamic adaptation maintains visual continuity while accommodating varying gaze positions.
Solution Approach 2:
The display device varies physical parameters such as data line length and pixel size in transition regions between different resolution areas. By adjusting these parameters, the system reduces visible discontinuities and artifacts at the boundaries between high and low resolution regions, maintaining visual continuity while implementing multi-resolution rendering.
Data Source
AI summary
An electronic device such as a head-mounted device may have displays. The display may have regions of lower and higher resolution to reduce data bandwidth and power consumption for the display while preserving satisfactory image quality. Data lines may be shared by lower and higher resolution portions of a display or different portions of a display with different resolutions may be supplied with different numbers of data lines. Data line length may be varied in transition regions between lower resolution and higher resolution portions of a display to reduce visible discontinuities between the lower and higher resolution portions. The lower and higher resolution portions of the display may be dynamically adjusted using dynamically adjustable gate driver circuitry and dynamically adjustable data line driver circuitry.