360-Degree VR Video Segmentation for High-Bandwidth Transmission
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Solution Overview
Problem
Current video transmission technologies face challenges in achieving high data transfer rates for large-sized 360-degree virtual reality (VR) videos over broadcast networks with limited bandwidth, leading to inconvenient user experiences.
Innovation Solution
A 360-degree VR video segmentation transmission system that divides the video into multiple channels based on an MPEG transport stream, using a frame structure with metadata, super-frames, and null packets to match bitrate, and employs a transmitter and receiver to synchronize and combine signals across channels, achieving a transfer rate of 200 Mbps or more.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If video content is transmitted in real time over a broadcast network with limited bandwidth, then the data transfer rate is constrained, but high data transfer rate is essential for comfortable video enjoyment
Solution Approach 1:
The patent divides a single high-bitrate video stream into multiple lower-bitrate channels (e.g., 8 channels for 360-degree VR video). Each channel is transmitted separately over the broadcast network, allowing the system to overcome bandwidth limitations while maintaining overall high data transfer rates. The receiver recombines these segmented channels to reconstruct the original high-quality video content.
2Speed
If 360-degree VR video is divided into multiple channels for transmission, then the transfer rate increases to 200 Mbps or more, but the frame structure and synchronization complexity increases
Solution Approach 1:
The patent introduces a standardized frame structure based on MPEG Transport Stream (TS) as an intermediary framework for organizing and transmitting multiple video channels. This standardized structure includes synchronization headers, channel identifiers, and timing information that facilitate reliable recombination at the receiver without requiring complex custom protocols.
Solution Approach 2:
The system dynamically adjusts transmission parameters including bitrate allocation across channels, frame structure configuration, and synchronization timing to optimize the balance between transfer rate and complexity. By varying these parameters based on network conditions and content requirements, the system achieves high transfer rates while managing frame structure complexity.
3Productivity
If multiple channels are used to achieve high transfer rate, then the bandwidth utilization improves, but the synchronization and combination process at the receiver becomes more complex
Solution Approach 1:
The patent implements synchronization mechanisms that use timing information and sequence numbers embedded in each channel's frame structure. The receiver continuously monitors synchronization markers and adjusts the recombination process in real-time, providing feedback-based error correction and timing alignment to manage the complexity of combining multiple channels efficiently.
Data Source
AI summary
A 360-degree virtual reality (VR) video segmentation transmission system and a method are disclosed. The system includes a transmitter and a receiver. The transmitter designs a frame for transmitting a 360-degree VR video divided into multiple channels, based on a motion picture expert group (MPEG) transport stream (TS), and transmits a signal combining the designed frame and a header for each of the multiple channels. The receiver receives the signal from the transmitter for each channel, combines contents contained in the received signal through synchronization, and outputs the combined contents.