Bluetooth Device Hardware Address Modification for Profile Switching
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Solution Overview
Problem
Existing Bluetooth devices require manual re-pairing when switching between different Bluetooth profiles, reducing user convenience as they cannot automatically recognize and connect to slave devices using different profiles due to fixed hardware addresses.
Innovation Solution
A Bluetooth device capable of modifying its hardware address based on the selected profile, allowing automatic pairing and connection with a master device by generating an indication value and processing digital signals to manage multiple profiles, enabling seamless transitions between profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed hardware address is used for Bluetooth devices, then device identification and pairing are simplified, but automatic pairing fails when switching between different Bluetooth profiles
Solution Approach 1:
The patent applies dynamics by making the hardware address changeable rather than fixed. The Bluetooth device dynamically modifies its hardware address based on the selected Bluetooth profile (e.g., changing from SPP address to HID address). This allows the device to maintain automatic pairing capability when switching between profiles, as the master device recognizes the changed address as a valid pairing candidate rather than requiring manual re-pairing.
Solution Approach 2:
The patent changes the parameter of hardware address according to the Bluetooth profile. Each Bluetooth profile is associated with a specific hardware address, and when the user switches profiles, the system changes the hardware address parameter accordingly. This parameter change enables the master device to automatically recognize and pair with the slave device in the new profile without manual intervention.
2Productivity
If manual re-pairing is required when switching Bluetooth profiles, then pairing accuracy is maintained, but user convenience and connection speed are reduced
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple hardware addresses in the Bluetooth device, each corresponding to a different Bluetooth profile. When the user switches profiles, the system already has the appropriate hardware address prepared and can immediately apply it, enabling automatic pairing without requiring the user to perform manual re-pairing operations. This preliminary preparation of multiple addresses significantly speeds up the connection process.
3Adaptability or versatility
If a single hardware address is used for multiple Bluetooth profiles, then device simplicity is maintained, but profile switching requires manual deletion and re-pairing
Solution Approach 1:
The patent applies segmentation by dividing the hardware address into multiple distinct addresses, with each address corresponding to a specific Bluetooth profile. Instead of using a single hardware address for all profiles, the system segments the address space to create profile-specific addresses. This segmentation allows the device to switch between profiles by changing the active address, enabling automatic pairing without time-consuming manual re-pairing operations.
Data Source
AI summary
A connection establishing method for a slave Bluetooth device supporting a plurality of Bluetooth profiles, includes generating an indication value according to a selecting signal inputted to the Bluetooth device, the indication value indicating a Bluetooth profile to be used, deciding whether to modify a hardware address of the Bluetooth device according to the indication value and a state value that indicates a Bluetooth profile currently used, and establishing a connection with a master Bluetooth device according to the Bluetooth profile to be used indicated by the indication value.