Shutter Glasses Synchronization via Visual Angle Detection
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Solution Overview
Problem
Existing 3D image display technologies, such as shutter glasses, require users to be at a specific visual angle relative to the display device, limiting the range of viewing angles and providing a poor 3D visual experience, especially in multi-user environments where all users must view 3D images at the same angle.
Innovation Solution
An image processing system that includes a detecting module to calculate the visual angle between a display device and shutter glasses using infrared detecting devices and the cosine law, transmitting a synchronization signal to control the switching frequency of the shutter glasses, allowing it to receive 3D image sets corresponding to the user's specific visual angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shutter glasses are used to display 3D images, then the 3D visual effect is improved, but the viewing angle is limited to a specific angle
Solution Approach 1:
The patent applies dynamics by making the shutter glasses' switching frequency adjustable and adaptive. Instead of using a fixed switching frequency, the system dynamically adjusts the frequency based on the detected visual angle between the display device and the shutter glasses. This allows the system to maintain optimal 3D visual effect across different viewing angles by synchronizing the shutter switching with the image transmission at the appropriate frequency for each angle.
Solution Approach 2:
The patent changes the parameter of switching frequency based on the visual angle. The detecting module measures the visual angle, and based on this measurement, the system adjusts the switching frequency parameter of the shutter glasses. This parameter change enables the shutter glasses to correctly synchronize with the displayed images regardless of the viewing angle, thereby expanding the usable viewing range while maintaining 3D visual quality.
2Adaptability or versatility
If image algorithms are used to enhance the visual angle of 3D images, then the convenience for viewing is improved, but the algorithm complexity increases
Solution Approach 1:
The patent replaces complex image processing algorithms with a simpler optical-mechanical detection and synchronization system. Instead of using sophisticated algorithms to calculate and adjust images for different angles, the system uses a detecting module to measure the visual angle and directly adjusts the shutter switching frequency accordingly. This substitution of mechanical/optical detection and control for complex computational algorithms reduces system complexity while achieving the same goal of expanded viewing angle.
Solution Approach 2:
The system performs self-adjustment based on the detected visual angle. The detecting module automatically measures the angle between the display device and the shutter glasses, and the control system automatically adjusts the switching frequency without requiring complex external processing or manual intervention. This self-service mechanism simplifies the overall system by eliminating the need for complicated image processing algorithms.
3Device complexity
If all users view 3D images at the same angle, then the system simplicity is maintained, but the multi-user experience is poor
Solution Approach 1:
The patent enables dynamic adaptation for multiple users by allowing each user's shutter glasses to independently adjust its switching frequency based on its specific visual angle relative to the display device. Each user can sit at a different position and angle, and the system dynamically configures the appropriate frequency for each user's viewing conditions. This dynamic per-user configuration maintains system simplicity while providing personalized optimal viewing experiences for multiple users simultaneously.
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
Enables users to view 3D images from various angles, enhancing the 3D visual experience and accommodating multiple users by dynamically adjusting the shutter glasses' frequency to match the user's position, thereby providing an improved 3D visual feeling.
Implementation Method 1
utilize an infrared detecting device to detect a distance between the display device and the shutter glasses
Data Source
AI summary
A 3D image playback method includes utilizing a detecting module to detect a visual angle included between a display device and a shutter glasses, playing a plurality of 3D image sets with different visual angles at a specific frequency by the display device, transmitting a synchronization signal corresponding to the visual angle to the shutter glasses by the detecting module, and controlling a switching frequency of the shutter glasses so as to make the shutter glasses capable of receiving one of the plurality of 3D image sets corresponding to the visual angle.