Stream Number Table HDR Video Playback Reliability
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Solution Overview
Problem
Current technologies lack a standardized configuration for recording and playback of various types of HDR video content, particularly in Blu-ray discs, which hinders reliable execution of HDR video playback processes.
Innovation Solution
A configuration that records video information for multiple video streams, including BDMV HDR video data and enhancement layer video data, in a stream number table within a playlist file, enabling reliable decoding and playback by acquiring and processing the corresponding video information for each stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple types of HDR video data are recorded on Blu-ray discs, then video quality and gamut are improved, but data management and playback reliability become more complex
Solution Approach 1:
The patent segments video information into distinct records within the STN table, separating base video stream information from enhancement layer video stream information. Each video stream type has its own entry with specific attributes, allowing the playback device to selectively access and process only the required video data for different HDR playback scenarios, thereby managing complexity while maintaining reliability
Solution Approach 2:
The STN (Stream Number Table) acts as an intermediary data structure that mediates between the multiple HDR video streams recorded on the disc and the playback device. It provides a standardized interface for describing video stream characteristics, enabling reliable playback by translating complex multi-stream configurations into manageable playback instructions
2Adaptability or versatility
If video information for multiple video streams is recorded in the STN table, then playback flexibility is improved, but data structure complexity increases
Solution Approach 1:
The STN table structure is designed with universal fields that can accommodate multiple types of video streams (base HDR video data, enhancement layer HDR video data, and other video data) using a consistent format. This multi-functional design allows the same data structure to handle diverse video configurations without requiring separate specialized structures for each stream type, thereby maintaining data structure simplicity while achieving playback flexibility
Solution Approach 2:
The patent utilizes parameter-based differentiation within the STN table entries, where specific parameters (such as stream type indicators, codec information, and enhancement layer flags) change to distinguish between different video stream types. This approach allows flexible representation of multiple video streams by varying parameters rather than changing the fundamental data structure, reducing complexity while maintaining adaptability
Data Source
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AI summary
There is provided a configuration enabling the acquisition of video information about multiple sets of video data to apply to ultra-high-definition (UHD) video playback, and video playback applying the multiple sets of video data. Video information about multiple sets of video data to apply to ultra-high-definition video playback is recorded in a stream number (STN) table in units of play items registered in a playlist file. For example, by recording video information regarding Blu-ray disc movie (BDMV) HDR video data (primary video stream) and video information regarding enhancement layer video data (enhancement layer (EL) video stream) in the STN table in units of play items, during playback it is possible to execute reliable decoding and playback processes based on the video information regarding these two sets of video data.