Display Device Sub-Sampling for Reduced Interpolation Complexity
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Solution Overview
Problem
The development of display devices that provide improved display quality by outputting high-speed image signals is hindered by the increased complexity and cost associated with image interpolation chips, which require processing large amounts of data as resolution increases, leading to higher development time and expenses.
Innovation Solution
A display device and method that utilize a sub-sampler to generate a sub-image signal, a motion interpolator to create a sub-interpolated image signal, and an image realigner to produce an interpolated image signal, allowing for the display of interpolated frames at reduced manufacturing costs and improved quality by processing data at a reduced resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of interpolated frames is increased to improve display quality, then display quality is improved, but device complexity and manufacturing cost increase due to requiring more image interpolation chips
Solution Approach 1:
The patent divides the image signal processing into two stages: first, a sub-sampler divides the original image signal into multiple sub-image signals at reduced resolution; second, multiple motion interpolators process these sub-image signals in parallel to generate sub-interpolated image signals. This segmentation allows the system to handle high-frame-rate interpolation without requiring a single complex high-resolution interpolator, thereby improving display quality while controlling device complexity
Solution Approach 2:
The patent introduces a resolution dimension by processing images at multiple resolution levels. Instead of directly interpolating full-resolution images, the system first downsamples to a lower resolution dimension, performs interpolation there, and then reconstructs the full-resolution image. This dimensional approach enables complex interpolation operations with reduced computational burden on individual chips
2Manufacturing precision
If the resolution of display devices is increased to improve display quality, then display quality is improved, but the amount of data to be processed by each image interpolation chip increases, leading to increased development time and cost
Solution Approach 1:
The patent segments the high-resolution image data into multiple lower-resolution sub-image signals through sub-sampling. Each motion interpolator processes only a portion of the total data at reduced resolution, significantly decreasing the data processing volume per chip while maintaining the ability to reconstruct the full-resolution output image
Solution Approach 2:
The patent performs interpolation operations partially at reduced resolution rather than fully at original resolution. By processing sub-image signals at lower resolution and only reconstructing the final high-resolution image after interpolation, the system achieves the necessary interpolation effect with reduced data processing requirements
3Manufacturing precision
If full-resolution image signals are processed directly to generate interpolated frames, then display quality is maintained, but manufacturing cost increases due to requiring high-performance image interpolation chips
Solution Approach 1:
The patent utilizes the resolution dimension by processing images at multiple resolution levels. Motion interpolation is performed on downsampled sub-image signals at lower resolution, reducing the computational complexity and manufacturing cost of individual chips, while the final reconstruction process maintains the full-resolution display quality
Solution Approach 2:
The patent introduces sub-image signals as an intermediary representation between the original full-resolution image and the final interpolated output. These sub-image signals serve as a intermediate stage that reduces data complexity for processing while preserving essential image information needed for high-quality interpolation and reconstruction
Data Source
AI summary
A method of driving a display device includes: sub-sampling an original image signal; generating a sub-image signal; generating a sub-interpolated image signal from the sub-image signal; generating an interpolated frame by realigning the sub-interpolated image signal; and displaying an image having the interpolated frame.