Dynamic Audio Link Adaptation for Wireless Error Management
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Solution Overview
Problem
Existing digital audio transmission methods, such as HDMI and USB, suffer from errors leading to audio interruptions and disturbances, while wireless options like HomePlug provide lower bandwidth and higher error rates, making them unsuitable for reliable multi-channel digital audio distribution to multiple speakers without cluttering the environment.
Innovation Solution
A communication system utilizing Certified Wireless USB (CWUSB) with WiMedia Ultra-Wideband radio technology dynamically adapts data packet transfer methods, encoding formats, synchronization, and transmission rates to manage errors, incorporating forward error correction and error concealment techniques for uninterrupted, high-quality digital audio delivery to multiple speakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless transmission is used to eliminate physical wires and reduce clutter, then ease of operation and aesthetic appearance are improved, but data error rates increase and reliability deteriorates
Solution Approach 1:
The system performs preliminary error correction by encoding audio data with forward error correction codes before transmission. This preliminary action prepares the data to withstand potential transmission errors, allowing the wireless system to maintain reliability while providing ease of operation.
Solution Approach 2:
The patent introduces an intermediary error correction layer between the audio source and wireless transmission. This intermediary processing layer adds redundancy and correction capabilities that mediate between the desire for simple wireless operation and the need for reliable transmission.
2Reliability
If forward error correction encoding is applied to ensure reliable transmission, then reliability is improved, but data transmission rate decreases and productivity deteriorates
Solution Approach 1:
The system applies partial error correction by selecting correction schemes that provide adequate reliability for audio transmission without over-correcting. This partial action maintains acceptable productivity while achieving sufficient reliability for audio playback.
Solution Approach 2:
The patent dynamically changes encoding parameters based on transmission conditions. When channel conditions are good, it uses lighter encoding to maintain high data rates. When conditions deteriorate, it increases error correction strength, thus adapting productivity and reliability parameters to current needs.
3Manufacturing precision
If dynamic adaptation of transmission parameters is implemented to maintain high quality audio, then audio quality is improved, but device complexity increases
Solution Approach 1:
The system implements self-service by automatically monitoring transmission quality and adjusting encoding parameters without external intervention. The device monitors packet error rates and autonomously adapts transmission parameters, reducing the need for complex external control systems while maintaining high audio quality.
Solution Approach 2:
The patent employs feedback mechanisms where transmission performance is monitored and used to adjust encoding parameters in real-time. This feedback loop enables dynamic adaptation of audio quality while managing device complexity through intelligent control algorithms.
Data Source
AI summary
A communication system including a host transceiver, one or many device transceivers, and a wireless or wired link, in which encoded digital audio data and optionally also other auxiliary data are transmitted and received between the host transceiver and one or many device transceivers. The wireless link can but need not be a Certified Wireless USB (“CWUSB”) link, which utilizes WiMedia Ultra-Wideband (“UWB”) radio technology. For certain embodiments, packets of encoded audio data are transmitted from a host to a device or multiple devices over the wireless link utilizing a variety of data packet transfer methods, with the host adapting its algorithms dynamically to provide the digital audio content over a changing wireless error rate environment. The host intelligently controls the method of data transmission, including data encoding format, synchronization, latency, and transmission rate, in response to data transfer error information it detects or receives from each individual device in the system. Other embodiments are devices that employ audio-data-specific error concealment methods. Other embodiments concern host and device management of graceful muting and restart of audio on a device-by-device basis.