3D Glasses Roll Detection and Lens Synchronization
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Solution Overview
Problem
Existing 3D image rendering technologies struggle to effectively compensate for viewer orientation, particularly roll orientation, without requiring system-level modifications that can be costly and incompatible with existing 3D glasses and displays.
Innovation Solution
Incorporating sensors and circuitry in 3D glasses to detect roll orientation and synchronize the active-shutter lenses, allowing both eyes to see only one eye's image when the viewer's head is rotated beyond a threshold angle, thereby shutting down the 3D effect smoothly and without altering the display system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If system-level implementation is used to compensate for roll orientation, then viewer comfort is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the roll detection and compensation functionality from the display system and places it solely in the 3D glasses. The glasses contain an inclinometer sensor and processing circuitry that independently detect roll orientation and adjust the stereoscopic image presentation, eliminating the need for system-level implementation while maintaining viewer comfort.
Solution Approach 2:
The 3D glasses autonomously detect roll orientation using an inclinometer and automatically compensate by adjusting the timing or orientation of the stereoscopic images presented to each eye. This self-service approach allows the glasses to handle compensation without requiring external system intervention, reducing overall device complexity.
2Ease of operation
If system-level implementation is used to compensate for roll orientation, then viewer comfort is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts the compensation functionality from the expensive display system and relocates it to the 3D glasses, which use inexpensive components like MEMS inclinometers. This extraction allows standard displays to work with enhanced glasses, avoiding the need to modify or replace expensive display hardware.
Solution Approach 2:
The patent employs low-cost sensors and processing elements within the 3D glasses that can be manufactured economically. The inclinometer and control circuitry are integrated into the glasses in a cost-effective manner, making the solution affordable for mass consumer markets without requiring expensive system-level modifications.
3Measurement precision
If system-level implementation is used to compensate for roll orientation, then compensation accuracy is improved, but compatibility between television and 3D glasses deteriorates
Solution Approach 1:
The patent extracts the roll detection and compensation logic from the display system and embeds it entirely within the 3D glasses. This extraction ensures that the glasses can work with any standard 3D display without requiring system-level coordination or proprietary interfaces, maintaining universal compatibility while achieving accurate compensation through the glasses' own sensors and processing.
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 solution allows for cost-effective, viewer-comfort-enhancing 3D image rendering that adapts to various orientations without requiring changes to the display system, conserving power and reducing disorientation, while being compatible with existing technologies.
Implementation Method 1
a simple sensor in the glasses may be all that is needed to detect roll orientation. For example, if an inclinometer within the frame of 3D glasses detects rotation with respect to gravity
Implementation Method 2
a camera on the 3D glasses can detect the orientation of the rectangle of the display with respect to the frame of the glasses
Data Source
AI summary
Devices, systems, and methods are presented for shutting down the 3D effect of active shutter 3D glasses by synchronizing the transparency of the lenses with respect to each other when the 3D glasses have been rotated beyond a threshold angle. The threshold angle can be pre-set through a user-selectable switch. Transitioning from an alternating shutter mode to a synchronized shutter mode can include a fade in which the duty cycles of the lens are adjusted. Direct measurement techniques for measuring the differential roll angle between the lenses and left and right eye images on a display are disclosed.