Modular Projection Display With Pixel Shifting for High-Rate Signals
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Solution Overview
Problem
Existing projection display devices are cumbersome, complex, and expensive due to the integration of high-resolution and high-frame-rate applications, lacking flexibility and cost-effectiveness.
Innovation Solution
A modularized projection display device design featuring a receiving unit, processing control unit, display imaging unit, projection light source, and shifting unit, allowing for flexible operation with high-resolution and high-frame-rate image signals through modular units that can switch between single and multiple input modes, enhancing system simplicity and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high resolution and high frame rate applications are integrated into the projection display device, then image quality and smoothness are improved, but device complexity and cost increase
Solution Approach 1:
The projection display device is divided into multiple independent processing channels (first processing channel for first color image signal, second processing channel for second color image signal, third processing channel for third color image signal). Each channel processes image signals independently, allowing the system to handle high resolution and high frame rate requirements while maintaining modularity and reducing overall system complexity.
Solution Approach 2:
The projection display device is designed to receive and process multiple types of image signals (first input image signal with high resolution, and multiple second input image signals with lower resolution) through a unified architecture. The device can operate in different modes (first mode for single high-resolution signal, second mode for multiple lower-resolution signals) using the same hardware components, thereby achieving multi-functionality without increasing device complexity.
2Manufacturing precision
If high resolution and high frame rate applications are integrated into the projection display device, then image quality and smoothness are improved, but cost increases
Solution Approach 1:
The system uses multiple color image signal processing channels (first, second, and third processing channels) that can be implemented using standard display imaging units and projection light sources. This segmented approach allows the use of off-the-shelf components rather than requiring custom high-cost hardware, thereby reducing manufacturing costs while achieving high resolution and frame rate performance.
Solution Approach 2:
The projection display device uses a universal architecture that can process both high-resolution single input signals and multiple lower-resolution input signals through the same hardware infrastructure. This multi-functionality eliminates the need for separate hardware systems for different input types, reducing overall system cost while maintaining the capability to deliver high-quality images.
3Adaptability or versatility
If the device supports both single high-resolution input and multiple lower-resolution inputs, then adaptability is improved, but device complexity increases
Solution Approach 1:
The receiving unit is designed to accept multiple types of input image signals (first input image signal with high resolution, and multiple second input image signals with lower resolution) through a unified interface. The processing control unit automatically determines the input mode and routes signals to appropriate processing channels, providing broad adaptability without requiring multiple specialized systems.
Solution Approach 2:
The projection display device dynamically switches between different operating modes (first mode for single high-resolution signal, second mode for multiple lower-resolution signals) based on the input received. The processing control unit adjusts signal routing and processing parameters in real-time, allowing the system to adapt to different input configurations without increasing hardware 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
The device provides flexible operation with high-resolution and high-frame-rate image signals, achieving simpler systems and lower costs by modularizing components, enabling compatibility with various image signal formats.
Implementation Method 1
the display image is transformed to a first projection image through the projection light source
Implementation Method 2
the shifting unit is configured to shift the first projection image based on a control timing and project the first projection image to a projection screen to increase a resolution of the first projection image
Data Source
Figure 1A~1B
Figure 1C
Figure 1D
AI summary
A projection display device (1) includes: a receiving unit (10); a processing control unit (11) electrically connected with the receiving unit (10); a display imaging unit (12) electrically connected with the processing control unit (11) and generating a display image; a projection light source (14) electrically connected with the processing control unit (11); and a shifting unit (13) electrically connected with the processing control unit (11) and the display imaging unit. In a first mode, the receiving unit (10) receives one first input image signal (200), and the shifting unit (13) increases a resolution of the first projection image (203) and projects to a projection screen. In a second mode, the receiving unit (10) receives a plurality of second input image signals (300), and the shifting unit (13) increases a resolution of the second projection image (302) and projects to a projection screen.