Communication Device Connection Switching via Disconnect Notice
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Solution Overview
Problem
In wireless display systems, users face difficulties in seamlessly switching communication connections between the wireless display system and existing networks, such as the Internet, due to the need to change wireless LAN connection settings, which disrupts access to resources like public information and intracompany services.
Innovation Solution
A communication device and system that includes a controller to manage connection settings, sending a notice before switching from one device to another, and only changing settings when a connection is not established, allowing for simple switching between wireless display systems and existing networks without requiring users to reconfigure the wireless LAN.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wireless display system automatically changes connection settings to switch between transmission devices, then the system can handle multiple users, but the connection settings change even when not needed, causing users to lose access to existing networks
Solution Approach 1:
The notification device sends a disconnect notification to the external device before the connection settings are actually changed. This preliminary action allows the external device to prepare for the connection change, and more importantly, allows the system to check whether the change is necessary before executing it, thereby preventing unnecessary disconnections from existing networks
Solution Approach 2:
The system implements a feedback mechanism where the notification is sent to the external device, which can then respond with connection information. This feedback loop allows the system to verify whether a connection change is actually needed before proceeding, preventing unnecessary disconnections while still enabling multi-device support
2Ease of operation
If the transmission device changes wireless LAN connection settings to communicate with the wireless display system, then video transmission is enabled, but access to existing networks like the Internet is lost
Solution Approach 1:
The disconnect notification is sent before the actual connection setting change occurs. This timing allows the system to prepare for the video transmission while maintaining awareness of existing network connections, enabling the user to return to existing networks without full reconfiguration
Solution Approach 2:
The connection settings are made dynamic rather than static. The system can switch between wireless display system connection and existing network connection based on user needs, with the notification mechanism enabling smooth transitions without complete loss of network access
3Adaptability or versatility
If the transmission device switches connection settings frequently between wireless display system and existing networks, then user flexibility is improved, but the complexity of connection management increases
Solution Approach 1:
The notification mechanism enables a form of self-service where the system automatically manages the connection switching process. The disconnect notification triggers the necessary changes without requiring manual user intervention for each switch, reducing the complexity of connection management while maintaining flexibility
Data Source
AI summary
A communication device includes a communication part configured to establish a connection to either a first device or a second device, and a controller configured to control the communication part. The controller is configured to send a predetermined notice to the second device before disconnecting the connection with the second device in a predetermined operation mode to switch the connection from the second device to the first device, but the controller does not make the predetermined notice in other cases.


