Bluetooth Audio Synchronization via Hybrid BLE and Classic Link
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Bluetooth devices, especially those without displays or user interfaces, face complexity in connection management and synchronization of audio data transmission, particularly in adjusting device positions and angles for optimal voice signal reception and synchronizing audio data output timings in wireless communication systems.
Innovation Solution
A method for a third device to transmit audio data in a short-range wireless communication system, involving determining synchronization values for audio data reception and output timing, adjusting device positions and angles, and synchronizing audio data output across multiple devices using Bluetooth Low Energy technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If Bluetooth Classic method is used for audio data transmission, then transmission speed and audio quality are improved, but power consumption increases
Solution Approach 1:
The patent combines Bluetooth Classic and Bluetooth Low Energy technologies into a hybrid system where BLE handles control signaling and device discovery while Bluetooth Classic handles high-bandwidth audio data transmission. This merging allows the system to leverage the low power consumption of BLE for control functions and the high speed of Bluetooth Classic for audio transmission, resolving the contradiction between transmission speed and power consumption.
2Reliability
If device discovery and connection management are implemented manually, then connection reliability is improved, but operation complexity increases
Solution Approach 1:
The patent implements automatic device discovery and connection establishment mechanisms where the system autonomously performs Bluetooth device scanning, pairing, and connection management without requiring manual user intervention. The control device automatically identifies available audio devices, establishes connections, and manages audio stream routing, thereby maintaining connection reliability while eliminating operational complexity for users.
3Adaptability or versatility
If multiple devices are connected for surround sound, then audio system versatility is improved, but synchronization difficulty increases
Solution Approach 1:
The patent implements a centralized synchronization mechanism where the control device acts as a master clock, sending timing synchronization signals to all connected audio devices. Each audio device receives continuous synchronization commands from the control device, allowing the system to maintain precise audio timing across multiple devices. This feedback-based synchronization approach enables versatile multi-device configurations while managing synchronization complexity centrally.
4Use of energy by moving object
If Bluetooth Low Energy is used for audio transmission, then power consumption is reduced, but transmission speed decreases
Solution Approach 1:
The patent segments the audio transmission system into two distinct functional components: BLE communication for low-power control signaling and device management, and Bluetooth Classic for high-speed audio data transmission. This segmentation allows each protocol to operate in its optimal performance regime, with BLE handling synchronization and control commands at low power consumption, while Bluetooth Classic handles bulk audio data transfer at high speeds, thereby resolving the contradiction between power consumption and transmission speed.
Data Source
AI summary
A method according to the present disclosure comprises determining a first synchronization value associated with a point in time at which reception of the audio data of each of a first device and a second device is completed; determining a second synchronization value for synchronizing points in time at which the audio data is output from the first device and the second device; determining a first synchronization reference time point based on the first synchronization value and the second synchronization value; performing a specific operation associated with transmitting the audio data; and transmitting, to each of the first device and the second device, the audio data on a specific channel associated with transmitting the audio data, wherein the audio data is transmitted based on the first synchronization reference time point and a second synchronization reference time point determined based on a specific time value for the specific operation.