Video Call Terminal Controller for Cross-Network Compatibility
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Solution Overview
Problem
Current video call technologies, such as those using 2G and 3G mobile phones and VoIP terminals, face limitations in convenience, cost, privacy, and security, as they require complex network setups and are not suitable for private calls, especially between different generations of mobile phones and VoIP devices.
Innovation Solution
A video call terminal and mobile phone system that enables video calls through an IP network, allowing for automatic network information exchange and control, user-commanded output of voice and video, and secure private calls, using a controller to manage communication units for voice and video input/output and storage of call records.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If video call is implemented between 2G and 3G mobile phones or between 2G mobile phone and VoIP terminal, then communication compatibility is improved, but network setup complexity and user configuration requirements increase
Solution Approach 1:
The patent introduces a server as an intermediary that mediates between mobile phones of different generations and VoIP terminals. The server handles network information exchange and call setup, allowing devices with different network capabilities to communicate without requiring complex user configuration. The server acts as a bridge that translates and routes communications between 2G, 3G, and IP-based networks.
Solution Approach 2:
The system enables automatic network information exchange between the mobile phone and the server, as well as between the server and the other party's terminal. This self-service mechanism eliminates the need for users to manually configure network settings, as the system automatically negotiates and establishes the appropriate communication parameters based on the devices' capabilities.
2Adaptability or versatility
If monitor type video call terminal is used with opened microphone and loudspeaker, then voice and video input/output capability is improved, but privacy protection and security are worsened
Solution Approach 1:
The patent implements selective output control where different parts of the system (voice output unit and video output unit) can be independently controlled. The controller can selectively activate or deactivate specific output channels based on the call type and user preferences, allowing private calls to be routed to specific devices while keeping other outputs disabled, thus protecting privacy while maintaining full input/output capability when needed.
3Adaptability or versatility
If video call is made using related art mobile phone, then video call functionality is achieved, but the mobile phone has to be kept elevated and screen size is relatively small
Solution Approach 1:
The patent creates a universal video call system that can operate across multiple device types including mobile phones, VoIP terminals, and monitor-type terminals. By distributing the video call functionality across different device forms with varying screen sizes and positioning requirements, the system allows users to leverage the strengths of each device type - using larger external displays when available while maintaining mobile phone portability when needed.
4Adaptability or versatility
If VoIP type video call terminal is used, then network-based video call is enabled, but user has to know network information and perform own setup which is complicated and inconvenient
Solution Approach 1:
The system implements automatic network information exchange between the mobile phone and the server, as well as between the server and the other party's terminal. This self-service mechanism eliminates the need for users to manually configure network settings, as the system automatically negotiates and establishes the appropriate communication parameters based on the devices' capabilities.
Data Source
AI summary
A video call terminal, a mobile phone and a control method thereof are provided. The video call terminal includes a first communication unit configured to conduct a video call with a second terminal through an Internet protocol (IP) network; a second communication unit configured to communicate with a mobile phone; and a controller configured to transmit first network information of the video call terminal to the mobile phone, receive second network information of the second terminal from the mobile phone, and control the video call with the second terminal using at least one of the first and second network information.