Display Circuitry for Increasing Perceived Resolution via Frame Expansion
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Solution Overview
Problem
Current display technologies, such as e-shift, struggle to achieve true native high-resolution video display and 3D capabilities while maintaining cost-effectiveness, as they rely on complex and costly refractor systems that cannot handle high-resolution data efficiently.
Innovation Solution
The proposed solution involves expanding an input image into two frames of equal size, displayed alternately at twice the refresh rate, using sub-pixel elements and a hybrid driving scheme that combines digital and analog modulation techniques to enhance spatial and intensity resolution, allowing for finer gray levels and reduced memory requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If e-shift technology uses refractor systems to double refresh rate and increase perceived resolution, then spatial display resolution is improved, but device complexity and manufacturing cost increase significantly
Solution Approach 1:
The patent replaces the mechanical/optical refractor system with an electrical/digital processing approach. Instead of using physical refractors to shift and combine images, the invention uses digital image processing to expand the input image into multiple frames and a spatial light modulator to display them alternately at doubled refresh rates, achieving the same resolution enhancement without mechanical complexity
Solution Approach 2:
The invention creates multiple copies of the input image at different resolutions and shifts them digitally. The input image is expanded into high-resolution frames and low-resolution frames that are then combined through alternating display, effectively copying and recombining image data to achieve higher perceived resolution without physical refractors
2Manufacturing precision
If refractor systems are used to achieve high-resolution display, then image quality is improved, but manufacturing cost increases
Solution Approach 1:
The patent uses computationally generated image frames instead of expensive optical components. The high-resolution display is achieved through digital processing of relatively simple input images, creating multiple frames that are displayed alternately. This approach uses inexpensive digital processing rather than costly refractor systems with precise mechanical placement and control
3Manufacturing precision
If refractor systems with doubled refresh rate are used, then perceived resolution increases, but the system cannot handle true native high-resolution video data
Solution Approach 1:
The patent dynamically processes input images through multiple stages: expanding to high-resolution frames, creating low-resolution frames, and alternating their display at doubled refresh rates. This dynamic multi-frame approach allows the system to adapt to various input resolutions and maintain versatility while achieving high perceived resolution, unlike static refractor systems
Data Source
AI summary
Circuits for displaying an input image in improved perceived resolution are described. A circuit includes memory cells, a horizontal decoder and a vertical decoder. Each of the memory cells is provided to store a pixel value to drive a pixel element on a display. The horizontal decoder (X-decoder) includes horizontal switches, each of the horizontal switches provided to address at least two rows of the cells simultaneously. Each of the horizontal switches is controlled by a horizontal switch signal to toggle among three rows of the cells with the middle row of the cells always selected. The vertical decoder (Y-decoder) includes vertical switches, each of the vertical switches provided to address at least two columns of the cells simultaneously. Each of the vertical switches is controlled by a vertical switch signal to toggle among three columns of the cells with the middle column of the cells always selected.