Dual Wireless Audio Transmission with Time Stamp Synchronization
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Solution Overview
Problem
Existing audio and video transmission systems face challenges in reliably transmitting audio signals from microphones to camera units, especially under varying conditions, which can lead to synchronization issues between audio and video signals during reporting.
Innovation Solution
An audio and/or video transmission system that employs a dual wireless transmission path, where the first path transmits audio signals and the second path embeds time stamps, allowing for independent audio transmission and subsequent synchronization with video signals, using wireless networks like GSM, UMTS, or WiFi.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If audio signals are transmitted wirelessly from microphone to camera unit, then transmission flexibility and mobility are improved, but transmission reliability and synchronization accuracy deteriorate under varying conditions
Solution Approach 1:
The system divides audio transmission into two separate wireless transmission paths: a first path for real-time audio signal transmission and a second path for time stamp transmission. This segmentation allows each path to be optimized independently, improving overall reliability while maintaining wireless flexibility.
Solution Approach 2:
Time stamps act as an intermediary element that mediates between the audio signal transmission and video signal synchronization. The time stamps are transmitted separately and used to accurately synchronize audio and video signals at the camera unit, ensuring synchronization accuracy despite wireless transmission variations.
2Device complexity
If a single wireless transmission path is used for audio signals, then device complexity is reduced, but synchronization accuracy between audio and video signals deteriorates
Solution Approach 1:
The transmission system is segmented into multiple independent paths: one for audio signals and another for time stamps. This segmentation enables precise synchronization measurement through dedicated time stamp transmission without adding significant complexity to the overall system architecture.
Solution Approach 2:
Time stamps are generated and transmitted in advance along with the audio signals. This preliminary action allows the camera unit to pre-synchronize or adjust synchronization based on the time stamps before actual audio-video playback, improving synchronization accuracy without requiring complex real-time adjustment mechanisms.
3Quantity of substance
If audio signals are transmitted without time stamps, then transmission data volume is reduced, but the ability to synchronize audio with video signals deteriorates
Solution Approach 1:
Instead of transmitting large amounts of synchronization data, the system transmits compact time stamp information at critical points. This local quality approach provides sufficient synchronization information with minimal data volume, maintaining efficiency while enabling accurate audio-video synchronization.
Data Source
AI summary
There is provided an audio and/or video transmission system. That audio and/or video transmission system has a microphone unit for detecting an audio signal. The microphone unit has a first wireless transmitting unit for wirelessly transmitting an audio signal by way of a first transmission path and a second wireless transmitting unit for wirelessly transmitting the audio signal by way of a second transmission path. The second wireless transmitting unit is adapted to embed a time stamp in the audio signal to be transmitted by way of the second transmission path.