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Hanwha Techwin’s patent describes a media playback apparatus and method to prevent playback delays caused by network, decoding, and rendering issues. By detecting delays through a single measurement, the system can request changed media data profiles from the server to ensure smooth playback in non-plug-in environments. GlobalData’s report on Hanwha Techwin gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Hanwha Techwin, was a key innovation area identified from patents. Hanwha Techwin's grant share as of February 2024 was 55%. Grant share is based on the ratio of number of grants to total number of patents.

Media playback apparatus with system to prevent playback delay

Source: United States Patent and Trademark Office (USPTO). Credit: Hanwha Techwin Co Ltd

A recently granted patent (Publication Number: US11909799B2) discloses a media service apparatus designed to transmit media data to a media playback apparatus. The apparatus includes a memory for storing a script module that plays back the media data on a web browser of the playback device. The processor within the apparatus comprises various units such as a module transmitting unit, packetizing unit, and web server to facilitate the transmission process. The script module includes a decoding module to decode media data without the need for a plug-in, and a delay detection module to identify playback delays, including network, decoding, and rendering delays, on a frame-by-frame basis. This innovative technology aims to enhance the efficiency of media playback by detecting and addressing delays in real-time.

Furthermore, the script module, written in Javascript, is capable of detecting playback delays based on differences in arrival times of media data at the decoding module and timestamps. By comparing these differences between frames and determining if they exceed predetermined thresholds, the apparatus can dynamically adjust the bit rate of the media data to optimize playback performance. Additionally, the script module can interact with another decoding module embedded in the web browser, such as a video tag module supported by HTML5, to further enhance the decoding process. In response to detected delays, the media playback apparatus can request the transmission of media data with profiles of varying levels to ensure smooth playback. This patent showcases a sophisticated system that leverages script modules and real-time delay detection to improve the overall media playback experience for users.

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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.