Synchronizing Shutter Glasses via Display Plane Signals
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Solution Overview
Problem
Standard display systems fail to effectively recreate three-dimensional images, as they display two-dimensional images without regaining three-dimensional information, and existing synchronization methods require external devices, increasing costs and component complexity.
Innovation Solution
A system and method for synchronizing shutter glasses with a display system by displaying a first image, a second image, and a synchronization signal on the same display plane, using an array of light modulators and a controller to generate pulse-width modulated signals, eliminating the need for a dedicated synchronization emitter and utilizing existing projection display hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dedicated synchronization emitter is used to synchronize shutter glasses with display system, then synchronization accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the synchronization signal generation function with the existing display system hardware. The controller that already manages the light modulators is extended to generate synchronization signals, merging two functions (display control and synchronization) into a single system component, thereby eliminating the need for a separate synchronization emitter while maintaining synchronization accuracy
Solution Approach 2:
The display system hardware is designed to perform multiple functions: it both displays images through the light modulators and generates synchronization signals for the shutter glasses. This multi-functionality approach allows the same hardware infrastructure to serve dual purposes, reducing overall system complexity and component count
2Manufacturing precision
If multiple images are displayed on the same display plane with non-overlapping display periods, then three-dimensional image quality is improved, but display system complexity increases
Solution Approach 1:
The patent divides the display time into distinct, non-overlapping periods for different images. Each image is assigned a specific time slot during which its corresponding light modulator is active, while other modulators remain inactive. This temporal segmentation allows multiple images to be displayed on the same plane without interference, maintaining precise image quality
Solution Approach 2:
The display system operates in periodic cycles, alternating between different image streams in a structured sequence. Each image is displayed during its designated period, followed by synchronization signals, creating a rhythmic, predictable pattern that simplifies control logic while ensuring precise image delivery to the correct shutter glasses
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces component count and costs, enhances product reliability, and allows for the display of three-dimensional images using standard projection display system hardware with minimal development and investment, while ensuring accurate synchronization of images for stereoscopic viewing.
Implementation Method 1
an array of light modulators optically coupled to the light source, and a controller electronically coupled to the array of light modulators and to the light source. The array of light modulators produces images and display synchronization signals on a display plane by modulating light from the light source
Data Source
AI summary
System and method for synchronizing shutter glasses with a display system. An embodiment comprises displaying a first image from a first image stream on a display plane, displaying a second image from a second image stream on the display plane, and displaying a synchronization signal on the display plane, during a first, a second, and a third display period, respectively. The first image and the second image are displayed at least partially on the same area of the display plane and the first and the second display periods do not overlap. The display of the synchronization signal on the display plane enables the elimination of a dedicated synchronization signal broadcast unit, thereby reducing the cost while increasing the reliability of a display system.