Video Telephony Remote Control via H.245 Intermediary
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Solution Overview
Problem
In existing Video Telephony (VT) systems, users cannot remotely control peer terminals during a VT session, leading to inconvenience when image or voice quality issues arise, as the H.245 protocol lacks control mechanisms for user-initiated adjustments.
Innovation Solution
A VT system and method that enables remote control of peer terminals using the H.245 protocol, allowing users to send and execute commands for reconfiguring multimedia data, such as muting audio or adjusting image brightness, by establishing a command list and execution source, and integrating these functions into mobile communication terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the H.245 protocol is used for VT communication, then interoperability between terminals is maintained, but the user cannot control the peer terminal during the VT session
Solution Approach 1:
The patent introduces a control message as an intermediary mechanism within the H.245 protocol framework. This control message acts as a mediator that enables the local terminal to instruct the peer terminal to perform specific operations (such as muting audio or adjusting video parameters) without requiring changes to the core H.245 protocol structure. The control message carries instruction information that the peer terminal executes, thereby providing user control capability while maintaining protocol compatibility.
2Reliability
If the user requests the counterpart user to correct images and voices, then the quality issues can be addressed, but additional information exchange is required
Solution Approach 1:
The patent implements a self-service mechanism where the local terminal directly sends control messages to the peer terminal to automatically correct multimedia quality issues. Instead of requiring manual intervention from the counterpart user, the system enables automated control where the local terminal can instruct the peer terminal to adjust audio/video parameters, mute channels, or reconfigure transmission settings. This eliminates the need for additional back-and-forth communication and enables immediate quality correction.
Solution Approach 2:
The control message mechanism provides a feedback loop where the local terminal can monitor multimedia quality and automatically send correction instructions to the peer terminal. The peer terminal executes these instructions and can report back the results, creating a closed-loop feedback system that continuously optimizes multimedia quality without requiring manual user intervention or additional information exchange protocols.
3Adaptability or versatility
If remote control functions are added to the VT system, then user control capability is improved, but the protocol complexity increases
Solution Approach 1:
The patent designs the control message as a universal mechanism that can perform multiple control functions within a single protocol structure. The same control message framework can be used for various operations including muting audio channels, adjusting video parameters, controlling camera functions, and other multimedia adjustments. This multi-functional approach avoids the need for separate protocol definitions for each control operation, thereby providing versatile control capability while minimizing protocol complexity.
Data Source
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AI summary
A video telephony system and a control method thereof are provided. The video telephony system includes a first mobile communication terminal and a second mobile communication terminal, wherein, during a video telephone call connection, the first mobile communication terminal receives a command from a user and sends the received command to the second mobile communication terminal and wherein the second mobile communication terminal executes the command received from the first mobile communication terminal and reconfigures multi-media data transmitted to the first mobile communication terminal.