Bluetooth Connection Switching in Portable Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Bluetooth technologies in portable terminals cannot selectively connect to multiple handsfree devices without disconnecting existing service links, limiting user flexibility in switching calls between different Bluetooth devices.
Innovation Solution
A portable terminal apparatus and method that includes a position determining unit for searching and connecting to additional Bluetooth devices by sensing movement direction, allowing the release of existing connections to establish new ones while maintaining ongoing calls, using a Bluetooth connecting unit to manage the switching process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a portable terminal maintains a service link connection with a Bluetooth device, then the call connection is stable and reliable, but the terminal cannot selectively connect to another Bluetooth device without disconnecting the existing connection
Solution Approach 1:
The patent segments the Bluetooth connection management into two independent parts: service link connection (for call stability) and SCO link connection (for audio channel). This allows the terminal to maintain the service link with the current device while establishing SCO links with multiple devices simultaneously, enabling call switching without disconnecting the underlying service connection.
Solution Approach 2:
The service link connection is designed to serve multiple functions: it maintains the logical connection for call control while allowing multiple SCO audio channels to be established with different Bluetooth devices. This multi-functionality enables the terminal to use one service link to support connections with multiple handsfree devices.
2Adaptability or versatility
If a portable terminal releases the connection with the first Bluetooth device to connect with the second Bluetooth device, then the terminal can switch to a different device, but the existing call connection may be disrupted
Solution Approach 1:
By separating service link management from SCO link management, the patent allows selective release of SCO links without affecting the service link. The terminal can release SCO connections with first and second devices independently while the service link remains intact, ensuring call continuity during device switching.
Solution Approach 2:
The terminal establishes the service link connection in advance as a stable foundation, then manages SCO link connections dynamically. This preliminary establishment of the service link ensures that when SCO links are released or switched, the underlying connection framework remains ready to maintain call continuity.
3Ease of operation
If a portable terminal searches for additional Bluetooth devices by sensing movement direction, then the terminal can automatically detect the desired device, but the connection switching process becomes more complex
Solution Approach 1:
The terminal uses its own motion sensors to detect movement direction and automatically determines which Bluetooth device the user intends to connect to. This self-service capability eliminates the need for manual device selection by the user, as the terminal autonomously identifies the target device based on physical movement patterns.
Solution Approach 2:
The patent replaces manual device selection (mechanical interaction via buttons or touchscreen) with motion sensing technology. The terminal's motion sensors detect physical movement and translate it into automatic device selection, substituting mechanical user interaction with an automated sensing and recognition system.
Data Source
AI summary
An apparatus and method for connecting with a plurality of Bluetooth devices is provided in a portable terminal. The apparatus includes a position determining unit and a Bluetooth connecting unit. The position determining unit searches for a second Bluetooth device by using a movement direction of the terminal, when performing a call by the second Bluetooth device while maintaining a call. The Bluetooth connecting unit processes the performance of a call using a first Bluetooth device and the second Bluetooth device. When searching the second Bluetooth device, the Bluetooth connecting unit releases the connection of the first Bluetooth device while maintaining the call and performs a connection with the second Bluetooth device.