Display Device Subsampling Blue Channel Data for Bandwidth Reduction
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Solution Overview
Problem
High-resolution display devices face increased bandwidth requirements for image data transmission, leading to higher interface costs and potential image quality degradation, especially in virtual reality applications where ultra-high resolution is necessary.
Innovation Solution
A display device configuration that subsamples data of a color with the least contribution to luminance and interpolates this data to reconstruct the image, reducing the overall bandwidth while maintaining image quality, using a host system and timing controller to manage the subsampling and reconstruction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ultra-high resolution display panel is used to prevent pixel recognition, then image quality is improved, but data transmission bandwidth requirement increases
Solution Approach 1:
The patent extracts and removes the blue color channel data from the RGB image data, transmitting only red and green channel data. This reduction in data quantity allows ultra-high resolution images to be transmitted with lower bandwidth requirements while maintaining perceptual image quality, as the blue channel is reconstructed at the display device using interpolation algorithms.
2Productivity
If higher clock rate is used to increase transmission bandwidth, then data transmission capability is improved, but interface cost increases
Solution Approach 1:
The patent changes the data transmission parameters by reducing the number of color channels from three (RGB) to two (RG), thereby decreasing the data volume that needs to be transmitted. This parameter change allows the use of lower clock rates and simpler interface configurations while maintaining the ability to transmit ultra-high resolution images, thus reducing interface cost.
3Measurement precision
If data quality is maintained at high resolution, then image quality is improved, but transmission bandwidth increases
Solution Approach 1:
The patent creates a reconstructed copy of the blue color channel data at the display device by interpolating from the transmitted red and green channel data. This copying approach allows the system to transmit less data while still providing complete RGB information at the display, maintaining image quality with reduced bandwidth requirements.
Data Source
AI summary
A display device according to an embodiment is configured to include a host system subsampling and transmitting data of a first color among a plurality of colors of input image data; a timing controller interpolating the data of the subsampled first color in data received from the host system to reconstruct the image data and outputting the reconstructed image data; a display panel having a plurality of pixels connected to a gate line and a data line; and a driving circuit driving the gate line and the data line under a control of the timing controller to supply data voltages corresponding to the reconstructed image data to the plurality of pixels.