Wireless Display Audio Sync via Local Silent Stream Generation
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Solution Overview
Problem
Current methods for initializing and synchronizing display devices with audio data are inefficient, particularly in wireless configurations, leading to bandwidth and power wastage due to the transmission of silent audio data streams, which can result in audio clipping and increased power consumption.
Innovation Solution
The solution involves shifting the generation of silent audio data streams from the transmitter to the receiver, where metadata associated with the audio data stream is stored and used to transmit a silent data stream based on this information, eliminating the need for continuous synchronization and reducing bandwidth and power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a silent audio data stream is transmitted over the wireless link to maintain audio synchronization, then audio synchronization is retained, but bandwidth and power consumption increase significantly
Solution Approach 1:
The patent extracts the silent audio data generation function from the transmitter and relocates it to the receiver. The transmitter only sends a trigger signal or metadata, while the receiver generates the actual silent audio data locally using stored audio format information, eliminating the need to transmit unnecessary audio data over the wireless link.
Solution Approach 2:
The receiver creates a local copy of the audio data stream by generating silent audio frames based on stored metadata from the latest audio data stream. This copied silent data is then used to maintain synchronization without requiring continuous transmission of actual audio content from the transmitter.
2Reliability
If a silent audio data stream is transmitted over the wireless link to maintain audio synchronization, then audio synchronization is retained, but valuable wireless network bandwidth is consumed
Solution Approach 1:
The patent extracts the silent audio data generation function from the transmitter and relocates it to the receiver. The transmitter only sends a trigger signal or metadata, while the receiver generates the actual silent audio data locally using stored audio format information, eliminating the need to transmit unnecessary audio content over the wireless link.
Solution Approach 2:
Instead of transmitting complete silent audio data streams, the system transmits only essential metadata or trigger signals from the transmitter. The receiver then performs the partial action of generating the actual silent audio frames locally, reducing overall data transmission requirements while maintaining synchronization.
3Reliability
If the transmitter generates and transmits silent audio data streams, then audio synchronization is maintained, but device complexity and processing overhead increase
Solution Approach 1:
The patent extracts the silent audio data generation function from the transmitter and relocates it to the receiver. The transmitter only sends a trigger signal or metadata, while the receiver generates the actual silent audio data locally using stored audio format information, eliminating the need to transmit unnecessary audio content over the wireless link.
Data Source
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AI summary
An apparatus and method is provided for improving initialization and synchronization of display devices to audio data. Current implementations to retain synchronization between a transmitter and a display use "Keep Alive" silent audio data stream in the format of the latest data stream on an interface between the transmitter and the display even when no data is available. Implementing the above solution in a system where the silent audio data stream is transmitted over a wireless link is bandwidth and power inefficient. The techniques provide an apparatus and method to efficiently generate and transmit silent audio data stream for maintaining synchronization.