Timing Controller Rendering Module Memory Optimization
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Solution Overview
Problem
Display apparatuses using the pentile mode to enhance luminance face challenges in minimizing memory size for the operation of the rendering module, which is crucial for compensating the degradation of resolution due to reduced sub-pixels.
Innovation Solution
The display apparatus incorporates a timing controller with a rendering module that converts image signals into intermediate data signals by utilizing resampling filter factors and arithmetic units to generate data signals for pixels, including sub-pixels corresponding to red, green, blue, and white colors, thereby reducing memory usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pentile mode is adopted to enhance luminance by replacing conventional pixels with white sub-pixels, then luminance level is improved, but memory size required for rendering module operation increases
Solution Approach 1:
The rendering module is divided into multiple processing units including a first arithmetic unit for calculating first intermediate data signals, a second arithmetic unit for calculating second intermediate data signals, and a multiplexer for selecting between them. This segmentation allows the system to process image signals in stages using different arithmetic operations, reducing the memory footprint while maintaining luminance enhancement capabilities through the pentile mode.
2Device complexity
If the number of sub-pixels is reduced to implement pentile mode, then device complexity is reduced, but rendering precision deteriorates
Solution Approach 1:
The system dynamically adjusts rendering parameters by calculating different intermediate data signals based on the position and type of sub-pixels. The first and second arithmetic units compute different intermediate data signals using different algorithms depending on the pixel configuration, allowing the system to maintain rendering precision despite the reduced number of sub-pixels in pentile mode.
Solution Approach 2:
The multiplexer receives feedback about which arithmetic unit's output should be used based on the image signal characteristics and pixel positioning information. This feedback mechanism allows the system to adaptively select the most appropriate rendering path, maintaining precision while managing the complexity reduction from fewer sub-pixels.
Data Source
AI summary
Disclosed is a display apparatus including: a display panel including a plurality of pixels each for displaying an image corresponding to a data signal; and a timing controller configured to receive an image signals and to convert the image signal into the data signal to be supplied to the display panel, wherein the timing controller is further configured to convert the image signal into an intermediate data signal and to generate the data signal, which corresponds to a k-th pixel, on a basis of intermediate data signals corresponding to a (k−1)-th pixel, the k-th pixel and a (k+1)-th pixel of the plurality of pixels, wherein the data signal corresponding to a first pixel of the plurality of pixels includes first and second color signals and the data signal corresponding to a second pixel of the plurality of pixels includes third and fourth color signals.