Video Transmission Network with Global Clock Synchronization
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Solution Overview
Problem
Conventional video transmission systems are not suited for handheld mobile devices, as they fail to adapt to the unique viewing environment and channel conditions of mobile devices, leading to suboptimal video quality and inefficient resource usage.
Innovation Solution
A video transmission network with an edge device that processes video streams based on mobile device feedback, including device parameters, location data, and channel characteristics, to adjust video parameters such as frame rate, resolution, and encoding format, while using a global clock for synchronization and authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional video transmission systems are used for mobile devices, then system compatibility is maintained, but video quality becomes suboptimal and resource usage becomes inefficient
Solution Approach 1:
The system dynamically adjusts video transmission parameters (resolution, frame rate, encoding format) based on real-time feedback from mobile devices about their capabilities and current channel conditions. This dynamic adaptation allows the system to optimize video quality for each specific device while efficiently utilizing available network resources, resolving the contradiction between maintaining conventional system compatibility and achieving optimal performance.
Solution Approach 2:
The patent changes multiple video transmission parameters simultaneously based on device feedback, including resolution, frame rate, and encoding format. By adjusting these parameters according to the specific capabilities of mobile devices and current channel conditions, the system achieves both high video quality and efficient resource usage, overcoming the limitations of conventional fixed-parameter transmission systems.
2Manufacturing precision
If video streams are adapted to mobile device capabilities, then video quality is optimized, but system complexity increases
Solution Approach 1:
The system implements a feedback mechanism where mobile devices send information about their capabilities and current operating conditions back to the transmission system. The system then uses this feedback to automatically adjust video transmission parameters, optimizing video quality without requiring complex manual configuration. This feedback-driven approach manages system complexity by automating the adaptation process rather than requiring complex pre-configuration for each device type.
Solution Approach 2:
The patent creates a universal video transmission system that can adapt to multiple different mobile device types and capabilities through a single standardized interface. The edge device performs multiple functions including format conversion, parameter adjustment, and quality optimization, allowing the system to handle diverse devices without requiring device-specific transmission paths, thereby managing complexity through multi-functionality rather than proliferation of specialized components.
3Measurement precision
If a global clock is used for synchronization, then timing accuracy is improved, but authentication security requirements increase
Solution Approach 1:
The system performs preliminary authentication of mobile devices using location data and device parameters before allowing access to video content. The global clock provides accurate timing for this preliminary authentication process, ensuring that only authorized devices can receive and play back video streams. By handling authentication in advance with precise timing, the system maintains both high timing accuracy and strong security without requiring continuous complex authentication mechanisms during video playback.
Data Source
AI summary
A network module receives network global positioning system (GPS) signals and that transmits a video signal to a remote device that includes time stamps that are based on the network GPS signals. The network module receives a device parameter from the remote device that indicates that local GPS signals are available to the remote device. The network module reduces a frequency of the time stamps when the device parameter indicates that local GPS signals are available to the remote device.