Extending LCD Vertical Blanking Interval to Eliminate Stereo Ghosting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Time sequential stereo viewing on liquid crystal displays (LCDs) results in 'ghosting' and improper image presentation due to slow pixel response time and short image duration, leading to an unacceptable viewing experience.
Innovation Solution
Increasing the duration of the vertical blanking interval and controlling the shutter orientations of stereo glasses to ensure each eye receives only its intended image, while potentially adjusting pixel transmission rates and display timings to enhance the viewing experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If time sequential stereo viewing is implemented on LCDs, then separate images can be presented to left and right eyes, but slow pixel response time causes ghosting and improper image presentation
Solution Approach 1:
The system performs preliminary actions by extending the vertical blanking interval and timing the shutter closures to occur during this extended interval. This ensures that pixels have sufficient time to fully transition between images before the corresponding eye shutter opens, preventing ghosting while maintaining stereo viewing capability
Solution Approach 2:
The invention changes the timing parameters of the display system by extending the vertical blanking interval duration and adjusting the shutter control timing. This parameter modification allows the slow LCD pixels to complete their transition before image presentation begins, resolving the ghosting issue while preserving stereo functionality
2Productivity
If standard vertical blanking interval duration is used, then display timing follows conventional standards, but each eye receives unintended content for a sizeable portion of the duration
Solution Approach 1:
The system performs preliminary shutter closure actions during the extended vertical blanking interval, ensuring that both shutters are closed before the next image is fully written to the display. This preliminary timing action prevents cross-contamination of stereo images while maintaining conventional display refresh rates
Solution Approach 2:
The extended vertical blanking interval acts as an intermediary time buffer between left and right image presentations. By lengthening this intermediate period and coordinating shutter closures within it, the system prevents unintended content from reaching either eye while maintaining normal productivity
3Illumination intensity
If shutter duration is extended to improve brightness, then more light reaches the eye, but the eye is exposed to unintended content for longer periods
Solution Approach 1:
The system performs preliminary shutter closure actions during the extended vertical blanking interval, ensuring that shutters are closed before unintended content appears. This allows the shutters to remain open during the entire duration of intended image presentation, maximizing brightness while preventing exposure to cross-contaminated content
Data Source
AI summary
A system, method, and computer program product are provided for enhancing a viewing experience when display content is viewed utilizing stereo glasses. In use, display content is received for being outputted utilizing a display. Further, a duration of a vertical blanking interval associated with the display content is increased for enhancing a viewing experience when the display content is viewed utilizing the stereo glasses.