Baseband Video Transmission Speed Control for Low-Delay Playback
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Solution Overview
Problem
Existing technologies struggle to perform continuous video reproduction with minimal delay when transmitting baseband video data over networks, particularly due to jitter fluctuations that can cause buffer short-circuits and image disturbances.
Innovation Solution
A transmission device and reception device system that controls the transmission of baseband video data via optical communication networks, where the transmission speed is adjusted based on requests from the reception device to manage buffer levels and mitigate jitter fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a buffer is provided in the display on the reception side to temporarily accumulate transmitted data, then continuous video reproduction is ensured, but the buffer capacity must be increased when jitter fluctuation is large, and the buffer is short-circuited when transmission is not performed at a constant rate
Solution Approach 1:
The transmission speed is dynamically adjusted based on buffer status. The reception device monitors buffer levels and requests transmission speed changes from the transmission device, allowing the system to adapt transmission characteristics in real-time rather than using fixed buffer capacity
Solution Approach 2:
A feedback mechanism is established where the reception device monitors buffer levels and sends transmission speed change requests back to the transmission device. This closed-loop control allows the system to maintain optimal buffer levels without excessive capacity while ensuring continuous reproduction
2Adaptability or versatility
If baseband video data is transmitted via a network, then flexibility in transmission path is achieved, but jitter fluctuation occurs in the intermediate path causing image disturbance or black images
Solution Approach 1:
The reception device monitors buffer levels and sends transmission speed change requests to the transmission device via the network, creating a feedback loop that compensates for network jitter and maintains stable video transmission despite intermediate path fluctuations
Solution Approach 2:
The transmission speed parameter is dynamically changed based on buffer status. By adjusting transmission speed in response to buffer levels, the system compensates for network jitter and maintains reliable video transmission over flexible network paths
Data Source
AI summary
To enable continuous video reproduction on a reception side with a minimum delay in a case where baseband video data is transmitted via a network.A transmission/reception system includes a transmission device and a reception device connected via a network. By the transmission device, baseband video data is transmitted to the reception device via the network, and a transmission speed of the baseband video data is controlled on the basis of a transmission speed change request received from the reception device via the network. By the reception device, the baseband video data is received from the transmission device via the network, and the transmission speed change request is transmitted to the transmission device via the network on the basis of a buffer amount of the baseband video data.