SK Telecom has been granted a patent for a video encoding apparatus that enhances image filtering. The method involves determining block boundaries, setting boundary strength based on prediction modes, and calculating quantization parameters to decide on filtering execution, improving image quality in reconstructed images. GlobalData’s report on SK Telecom gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on SK Telecom, Cloud gaming was a key innovation area identified from patents. SK Telecom's grant share as of July 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.
Video encoding method with adaptive block boundary filtering
The patent US12075039B2 describes a video encoding apparatus and method designed to enhance the quality of reconstructed images by applying filtering techniques at specific block boundaries. The apparatus includes a boundary determination unit that identifies block boundaries for filtering, a strength setting unit that establishes the filtering strength based on the prediction modes of adjacent luma blocks, and a filtering execution unit that calculates quantization parameters. The strength setting unit adjusts the boundary strength according to various conditions, such as whether the luma blocks are predicted using intra or inter prediction modes, and whether certain preset conditions regarding transform coefficients and motion vectors are met. This multi-faceted approach allows for more precise control over the filtering process, potentially improving the visual quality of encoded video sequences.
Additionally, the method outlined in the patent mirrors the apparatus's functionality, detailing steps for determining block boundaries, setting boundary strengths, and executing filtering based on calculated parameters. The method emphasizes the importance of prediction modes and preset conditions in deciding whether to apply filtering and at what strength. It also includes provisions for deriving luma levels and offset values, which further refine the filtering process. The patent's claims encompass various types of block boundaries, including transform and sub-block boundaries, and specify conditions under which different boundary strengths are applied. Overall, this innovation aims to optimize video encoding and decoding processes, enhancing the quality of visual media while maintaining efficient data handling.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
