Wireless Audio Links Using Separate Channels for Low Latency
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Solution Overview
Problem
Existing wireless audio systems struggle with high latency, which leads to incompatibility with low latency televisions and poor audio-video synchronization, due to the high computational resources required for accurate low-latency transmission.
Innovation Solution
A wireless audio system that transmits audio and auxiliary data through separate communication channels with varying frequency bandwidth, modulation, and communication protocols, using independent radio chains and diverse communication methods to manage latency and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high computational resources are used to achieve accurate low-latency transmission, then transmission accuracy is improved, but system complexity and cost increase
Solution Approach 1:
The patent segments the wireless communication into separate channels: a first channel for audio data transmission and a second channel for auxiliary data transmission. This segmentation allows each channel to be optimized independently, with the audio channel focusing on low latency and the auxiliary channel handling configuration and control data, thereby reducing the computational burden on the audio transmission path.
Solution Approach 2:
The patent introduces an intermediary auxiliary data transmission channel that carries control information between the audio transmitter and receiver. This intermediary channel enables the system to manage link schedules, coding rates, and other parameters without interfering with the real-time audio data transmission, thus maintaining low latency while reducing computational complexity for audio processing.
2Reliability
If separate channels with different modulation and protocols are used for audio and auxiliary data, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent divides the wireless communication system into distinct channels: a first channel dedicated to audio data with optimized modulation for low latency, and a second channel for auxiliary data with different modulation characteristics. This segmentation improves reliability by preventing interference between data types while allowing each channel to use protocols optimized for its specific purposes.
Solution Approach 2:
The patent implements dynamic link scheduling where the system can switch between different modulation and coding schemes based on real-time network conditions. The auxiliary data channel dynamically adjusts its parameters to match the audio channel's performance characteristics, enabling the system to adapt to changing wireless environments while maintaining separate optimized paths for audio and control data.
Data Source
AI summary
The illustrative embodiments provide a wireless audio system. The system includes a transmitter including one or more radios. The system includes receivers including one or more radios. The transmitter is configured to transmit audio data and auxiliary data through communications channel differing in at least one of frequency bandwidth, modulation, scheme, or communication protocol. The auxiliary data is configured to modify at least one operating parameter of one or more of the receivers.