Display Pulse Splitting With Periodic Emission for Motion Artifacts
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Solution Overview
Problem
Electronic displays with non-uniform display pixels experience motion artifacts due to varying pulse widths, causing uneven light integration by the human eye when the display is moved, resulting in visual artifacts such as motion blur and intensity variations.
Innovation Solution
Implementing a pulse width modulation scheme that splits a single pulse into multiple discrete pulses, ensuring the total light emission remains constant across different display pixels, thereby reducing or eliminating motion artifacts by evenly distributing light emission over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single long pulse is used to compensate for pixel non-uniformity, then display uniformity is improved, but motion artifacts increase due to uneven light integration by the human eye
Solution Approach 1:
The single long pulse is divided into multiple shorter discrete pulses. Instead of emitting one continuous pulse of light, the display system emits several shorter pulses sequentially within the same time period. This segmentation allows the human eye to integrate light more evenly across moving pixels, reducing motion artifacts while maintaining the total light emission needed for display uniformity compensation.
Solution Approach 2:
The pulse splitting technique uses periodic emission patterns where multiple pulses are distributed evenly within a time period. By spacing the pulses periodically rather than using one continuous pulse, the system achieves better temporal distribution of light emission, which reduces the integration artifacts caused by display motion while maintaining overall brightness levels.
2Illumination intensity
If different pulse widths are used to compensate for pixel brightness variations, then display uniformity is improved, but light emission distribution becomes uneven over time
Solution Approach 1:
The compensation pulses are segmented into multiple smaller pulses distributed over time. Instead of using one long pulse with varied intensity, the system uses multiple shorter pulses that collectively provide the same total light emission. This segmentation stabilizes the light emission distribution by preventing the human eye from detecting temporal variations in a single long pulse during display motion.
Solution Approach 2:
The pulse width modulation scheme dynamically adjusts the timing and duration of multiple pulses to achieve uniform light distribution. By dynamically distributing pulses across different time points rather than using a static single pulse, the system adapts to maintain consistent light emission perception even when the display is in motion, thereby stabilizing the overall light emission distribution.
Data Source
AI summary
Systems, methods, and devices for reducing or eliminating image artifacts due to motion are provided. An electronic display may include an electronic display panel having a display pixel, an optical combiner that directs light from the display pixel toward a viewing area, and display driver circuitry. The display driver circuitry may receive image data that defines a total pulse width for one image frame. The display driver circuitry may cause the display pixel to emit light in multiple pulses totaling to the total pulse width for the display pixel for one image frame.