13‐4: Adaptive Threshold Method for Dither Noise Reduction in Response Time Acceleration for 8K LCD TV

Abstract

In the existing Response Time Acceleration(RTA) system, dithering in the still image causes the pixel flickering. There were meaningful ways to remove this, but it was difficult to apply to high‐ratio compression with high complexity due to many restrictions on application. To solve this problem, we propose a method of removing dither noise by applying an Adaptive threshold. As a result, this paper shows that it can be applied to high‐ratio compressors having various compression method while improving the existing noise removal performance.

15‐3: Cost‐effective Display Driver IC Architecture for First Frame Drop Compensation with Shared Memory Interface

“…Previous frame data used for FFD compensation includes a compression error compared to the original due to compression. Compression errors in previous frame data may cause pixel flickering or failure to compensate as much as desired in the compensation process [4]. If a high-ratio compressor is used, chip size and cost can be reduced by minimizing frame buffer size, but the compression error of previous frame data increases, increasing the probability of image quality degradation.…”

“…As the compression ratio increases, the frame buffer size decreases. On the other hand, the possible max error increases as the high ratio compressor is used, which may cause a phenomenon in which pixel flickering or accurate compensation cannot be provided [4]. Next, the frame buffer used for Panel Self Refresh (PSR) was analyzed.…”