Bit Segment Rate Switching for 3D Projection Temporal Skew
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional 3D and multi-viewer projection methods suffer from visual image artifacts and temporal skew due to slow image data switching at frame or sub-frame rates, which are exacerbated at higher frame rates like Cinema frame rates.
Innovation Solution
The method employs a single projector that switches between different images using alternating bit segments or multiple bit segments, allowing for faster switching between RGB1 and RGB2 spectra or polarization, reducing temporal skew and creating high-quality 3D or multi-viewer images with minimal artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If image data is switched at frame or sub-frame rates using conventional methods, then a single projector can be used to deliver different images to different viewers, but temporal skew between images occurs causing visual artifacts
Solution Approach 1:
The patent segments the image data at the bit level rather than switching entire frames or sub-frames. By dividing the image into individual bits and switching them at ultra-high speeds (exceeding 1000 Hz), the system achieves temporal synchronization that eliminates visual artifacts while maintaining single-projector simplicity. This bit-level segmentation allows each bit to be delivered to the appropriate viewer's glasses with precise temporal control.
Solution Approach 2:
The patent changes the switching rate parameter from conventional frame rates (24-60 Hz) or sub-frame rates to ultra-high bit-level switching rates exceeding 1000 Hz. This parameter change transforms the temporal resolution of the system, allowing synchronization precision sufficient to eliminate temporal skew artifacts while using a single projector. The high switching rate enables the system to deliver different image bits to different viewers' glasses within the same frame period without causing visible artifacts.
2Adaptability or versatility
If active shutter glasses are used to separate images by time, then different images can be delivered to different eyes or viewers, but temporal skew and motion artifacts increase at higher frame rates
Solution Approach 1:
The patent segments image data into individual bits that can be independently routed to different viewers through active shutter glasses. By switching at the bit level rather than frame level, the system delivers precise temporal control to each viewer's glasses, ensuring that left-eye and right-eye bits arrive at the correct times without skew. This segmentation enables multi-viewer adaptability while maintaining temporal precision even at high frame rates.
Solution Approach 2:
The patent replaces the mechanical frame-by-frame switching approach with an electronic bit-level switching system operating at ultra-high frequencies. This substitution eliminates the temporal skew inherent in mechanical frame switching while maintaining the ability to deliver different images to different viewers through active shutter glasses. The electronic switching occurs so rapidly that it appears simultaneous to human perception, eliminating motion artifacts.
3Manufacturing precision
If passive filtered glasses are used to separate images by spectrum, then temporal skew is reduced, but the system requires specialized glasses and cannot easily switch between different image sequences
Solution Approach 1:
The patent implements dynamic switching at the bit level, allowing the system to adaptively route different image bits to different viewers in real-time. Unlike static passive filtered glasses that require physical filter changes, the electronic bit-level switching can dynamically reconfigure which viewer receives which image content on a per-bit basis. This dynamic capability maintains temporal synchronization while providing versatility for different image sequences and multi-viewer configurations.
Solution Approach 2:
The patent creates a universal system that can deliver different image sequences to multiple viewers using a single projector with bit-level switching. The system is not limited to a fixed spectral separation approach but can adaptively route any image data to any viewer through electronic switching. This multi-functionality allows the same hardware to serve various 3D and multi-viewer applications without requiring specialized passive glasses for each configuration.
4Manufacturing precision
If two separate projectors are used to deliver images simultaneously without temporal skew, then image quality is maintained, but device complexity and cost increase
Solution Approach 1:
The patent merges the functionality of two separate projectors into a single projector by implementing ultra-high-speed bit-level switching. The single projector alternates between delivering bits for different images at such high speed that the human visual system perceives both images simultaneously without temporal skew. This merging reduces device complexity and cost while maintaining the temporal synchronization advantages of dual-projector systems through the integration of bit-level switching control.
Solution Approach 2:
The patent employs periodic bit-level switching at ultra-high frequencies to simulate simultaneous image delivery from multiple projectors. The switching occurs in regular periodic cycles that are too rapid for human perception, creating the effect of simultaneous image presentation. This periodic action at the bit level allows a single projector to achieve the temporal synchronization of multiple projectors while reducing system complexity.
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 achieves nearly imperceptible skew between images, equivalent to simultaneous imaging with dual projectors, while maintaining high image quality and eliminating motion artifacts, even at higher frame rates.
Implementation Method 1
The present method utilizes the latter, spectrum differentiation, combined with a temporal switch to alternate between RGB1 and RGB2 spectra on a single projector to create a high quality image with imperceptible skew between the two different displayed images
Implementation Method 2
light can be separated to create different images by time (requiring the use of switchable active shutter glasses), polarization (requiring passive filtered glasses), or spectrum (requiring passive RGB1/RGB2 filtered glasses)
Data Source
AI summary
The present disclosure pertains to a method for 3D or multi-viewer projection of images. The method switches back and forth between left and right eye or multi-viewer data at single bit segment or multiple bit segment rates in a single projected image to create high quality 3D stereo or multi-viewer imaging with no motion artifacts.