VRR Video Stream Timing Synchronization via Header Insertion
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Solution Overview
Problem
Existing electronic apparatuses face challenges in processing and transmitting variable refresh rate (VRR) video signals over wireless networks, particularly in maintaining timing synchronization between the transmitting and receiving devices.
Innovation Solution
The electronic apparatus includes a communication interface, memory, and processors configured to identify the frame refresh rate of VRR video signals, insert this information into the header or tail area of video streams, and transmit compressed video streams over a wireless network to external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frame refresh rate information is inserted into video stream headers or tails, then timing synchronization is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by inserting frame refresh rate information into video stream headers or tails during the encoding phase. This allows the receiving device to have timing synchronization data available before video playback begins, enabling proactive synchronization adjustments rather than reactive corrections.
Solution Approach 2:
The frame refresh rate information acts as an intermediary element between the transmitting and receiving devices. By embedding this timing data within the video stream structure (headers or tails), the patent creates a mediator that carries synchronization instructions through the wireless transmission medium, resolving the timing alignment issue between devices.
2Adaptability or versatility
If variable refresh rate video is transmitted over wireless network, then adaptability is improved, but loss of time increases
Solution Approach 1:
The patent applies dynamics by enabling variable refresh rate transmission where the frame refresh rate can change dynamically during video playback. The system transmits different refresh rates (e.g., 60Hz, 120Hz, or other variable rates) based on content requirements and network conditions, making the transmission adaptable rather than static.
Solution Approach 2:
The patent implements parameter changes by modifying the frame refresh rate parameter during transmission. By embedding refresh rate information in the video stream and allowing dynamic adjustment of this parameter, the system can optimize transmission timing and reduce delays while maintaining adaptability to different display requirements.
3Measurement precision
If frame refresh rate information is embedded in video stream, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the video stream into discrete segments (frames) and embedding refresh rate information in standardized locations (headers or tails) of each segment. This structured approach allows precise timing measurement for each frame while maintaining organized, manageable data structures that reduce processing complexity.
Data Source
AI summary
An electronic apparatus includes a communication interface configured to communicatively couple with a wireless network, a memory storing one or more instructions, and one or more processors communicatively coupled with the communication interface and the memory, and configured to control the electronic apparatus. The one or more processors are further configured to execute the one or more instructions to identify a frame refresh rate of a variable refresh rate (VRR) video signal, acquire a compressed video stream corresponding to the VRR video signal by inserting information of the frame refresh rate into at least one of a tail area or a header area of a video stream, and transmit, to an external device through the wireless network, the compressed video stream.