Pixel Shifter and Resampling Circuit for Projection Display
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Solution Overview
Problem
Existing projection image display apparatuses face challenges in efficiently reducing the load of motion-interpolation image processing circuits, leading to difficulties in forming these circuits effectively.
Innovation Solution
The apparatus includes a resampling circuit to generate sub-frame image signals, a motion-interpolation image processing circuit for each sub-frame, and a pixel-shift controller to drive the display element and pixel shifter, allowing for reduced load on motion-interpolation image processing circuits by implementing pixel-shifting and motion-interpolation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If motion-interpolation image processing circuits are implemented for each sub-frame to reduce load, then processing efficiency improves, but device complexity increases
Solution Approach 1:
The image processing system is divided into multiple motion-interpolation image processing circuits, with each circuit dedicated to processing a specific sub-frame. This segmentation allows parallel processing of multiple sub-frames simultaneously, improving overall processing efficiency while keeping each individual circuit relatively simple in structure
Solution Approach 2:
Multiple motion-interpolation image processing circuits are combined within a single projection image display apparatus, working together to process different sub-frames. This merging approach distributes the processing load across multiple circuits, preventing any single circuit from becoming overly complex while maintaining high processing throughput
2Measurement precision
If high-resolution image processing is implemented, then image quality improves, but circuit size increases
Solution Approach 1:
The high-resolution image processing task is segmented across multiple motion-interpolation image processing circuits, with each circuit handling a portion of the processing workload. This distribution allows high-resolution processing to be achieved without requiring a single large, complex circuit
Solution Approach 2:
The patent replaces complex mechanical or purely electronic image processing mechanisms with a pixel-shifting approach. By physically shifting pixels using the pixel shifter component, the system achieves high-resolution processing without requiring correspondingly complex processing circuits, thereby reducing circuit size while maintaining image quality
3Productivity
If pixel-shifting and motion-interpolation processes are combined, then processing efficiency improves, but device complexity increases
Solution Approach 1:
The pixel-shifting process and motion-interpolation processing are merged into a coordinated system where the pixel shifter and multiple motion-interpolation image processing circuits work together. This integration allows both functions to be performed efficiently without requiring separate, independent systems, thereby improving processing efficiency while controlling overall system complexity through unified design
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 configuration enables easier formation and smaller size of motion-interpolation image processing circuits, improving the display of high-resolution images with reduced circuit bulkiness and increased efficiency.
Implementation Method 1
a pixel-shifter that shifts a pixel of a projected image by changing an optical path of the image light emitted from the display element
Data Source
AI summary
The projection image display apparatus includes a display element that emits image light generated by modulating light from a light source based, a pixel-shifter that shifts a pixel of a projected image by changing an optical path of the image light, a resampling circuit, a motion-interpolation image processing circuit, and a pixel-shift controller. The resampling circuit generates a plurality of sub-frame image signals having a resolution of the display element, by resampling an image signal having a resolution of the projected image. The motion-interpolation image processing circuit provides a motion-interpolation image process to the sub-frame image signals. The pixel-shift controller receives the sub-frame image signals having undergone the motion-interpolation image process. The pixel-shift controller drives the display element and the pixel shifter at a given timing based on the sub-frame image having undergone the motion-interpolation image process, and then displays the projected image, which involves pixel-shift, on a screen.