Transmitting Method for Ultra-HD Video Decoding
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Solution Overview
Problem
Current methods for decoding ultra-high definition moving images, such as 8K, face significant processing challenges due to high processing loads, making real-time decoding difficult, especially when using a single decoder.
Innovation Solution
The method involves allocating header information to sample data, including MP4 configuration information, and transmitting it in a way that differs based on the presentation time of the sample data, allowing for efficient reconfiguration and decoding without relying on meta data, and using the MMT protocol to packetize the data for parallel processing across multiple decoders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single decoder is used to decode ultra-high definition moving images, then device complexity is reduced, but processing capacity becomes insufficient for real-time decoding
Solution Approach 1:
The patent divides the decoding task into multiple segments by using multiple decoders (first decoder and second decoder) to process different portions of the encoded data in parallel. This segmentation allows the system to handle ultra-high definition moving images in real-time by distributing the processing load across multiple decoding units, thereby increasing overall processing capacity while maintaining manageable device complexity through modular architecture.
2Adaptability or versatility
If MP4 configuration information is always included in header information, then receiving device can always reconfigure sample data, but transmission data volume increases
Solution Approach 1:
The patent applies local quality by conditionally including MP4 configuration information in the header based on the specific requirements of the sample data. When the sample data requires reconfiguration (indicated by certain conditions in the encoded data), the MP4 configuration information is included; otherwise, it is omitted. This selective approach ensures that the receiving device has the necessary reconfiguration capability only when needed, while minimizing the overall transmission data volume by avoiding redundant information.
3Reliability
If meta data is transmitted with sample data, then receiving device has complete information for decoding, but transmission overhead increases
Solution Approach 1:
The patent extracts only the essential configuration information needed for decoding and places it directly in the header information accompanying the sample data, rather than transmitting separate meta data files. This extraction approach ensures that the receiving device has all necessary information for reliable decoding while minimizing transmission overhead by eliminating redundant meta data transmission and reducing the amount of information that needs to be processed and managed separately.
Data Source
AI summary
A transmitting method according to one aspect of the present disclosure includes: allocating, to sample data, header information including MP4 configuration information having contents differing according to whether or not a presentation time of the sample data is determined; and allocating, to the sample data, header information which does not include the MP4 configuration information according to whether or not the presentation time of the sample data is determined when meta data corresponding to the sample data is not transmitted.