Display Audio Channel Selection for Synchronized LE Audio Playback
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Solution Overview
Problem
Existing display apparatuses face issues with unsynchronized audio and image playback during multi-channel screen projection due to high power consumption and bandwidth resource utilization when monitoring all Bluetooth channels for audio data, leading to poor user experience.
Innovation Solution
Implementing Bluetooth Low Energy Audio (LE Audio) technology with a microphone grabbing mechanism to determine the target Bluetooth device with the earliest occurrence time, allowing the display apparatus to monitor only the target BIS channel indicated by the BIS channel identifier, reducing unnecessary bandwidth and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display apparatus monitors all Bluetooth channels to receive audio data, then the audio data can be received from any channel, but the power consumption and bandwidth resource utilization increase significantly
Solution Approach 1:
The display apparatus receives the BIS channel identifier in advance from the Bluetooth device before actual audio transmission begins. This preliminary channel identification allows the display apparatus to tune to the correct channel beforehand, avoiding the need to continuously monitor all channels during audio reception, thus reducing power consumption while ensuring reliable audio data reception.
2Reliability
If the display apparatus monitors all Bluetooth channels to receive audio data, then the audio data can be received from any channel, but the bandwidth resource utilization increases significantly
Solution Approach 1:
The display apparatus receives the BIS channel identifier in advance from the Bluetooth device before actual audio transmission begins. This preliminary channel identification allows the display apparatus to tune to the correct channel beforehand, avoiding the need to continuously monitor all channels during audio reception, thus reducing power consumption while ensuring reliable audio data reception.
3Reliability
If the display apparatus monitors all Bluetooth channels, then no audio data is lost, but the synchronization between audio and image playback deteriorates
Solution Approach 1:
The display apparatus receives the BIS channel identifier and occurrence time in advance, allowing it to pre-position itself on the correct channel before audio transmission starts. This eliminates channel switching delays and monitoring overhead during actual playback, ensuring that audio and image data are received and processed simultaneously, thereby maintaining synchronization.
Solution Approach 2:
The Bluetooth device provides feedback information including the BIS channel identifier and occurrence time to the display apparatus. This feedback mechanism enables the display apparatus to accurately track and synchronize with the audio transmission timing, ensuring precise audio-image synchronization while maintaining complete audio data reception through the identified target channel.
Data Source
AI summary
Disclosed are a display apparatus and a data processing method. The display apparatus can include: a display, an audio playback module, a WiFi communication module, and a memory. A processor is connected with the display, the audio playback module, the WiFi communication module and the memory, and can be configured to execute computer instructions in the memory to cause the display apparatus to perform: determining a target Bluetooth device having the earliest occurrence time of microphone grabbing from at least one Bluetooth device; sending a microphone grabbing success indication to the target Bluetooth device, receiving a Broadcast Isochronous Stream, BIS, channel identifier sent from the target Bluetooth device after sending the microphone grabbing success indication; monitoring a target BIS channel indicated by the BIS channel identifier to receive a target BIS audio; and controlling the audio playback module to play the target BIS audio.