Media Stream Switching With Staggered SMPTE 2022-7 Redundancy
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Solution Overview
Problem
Existing broadcast production systems require increased bandwidth during switching between different video sources, which can exceed available bandwidth and impose restrictions on creative work.
Innovation Solution
A method and device for switching between media data streams that maintains compliance with the SMPTE 2022-7 standard by discontinuing and enabling backup video streams in a staggered sequence, allowing seamless transitions without additional bandwidth requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two independent redundant networks are used to transport video signals, then reliability of broadcast production is improved, but bandwidth requirement increases
Solution Approach 1:
The patent enables the backup video stream in advance before the main video stream is discontinued during switching. This preliminary action ensures that the backup stream is ready and compliant with SMPTE 2022-7 standards before the switch occurs, maintaining reliability while managing bandwidth efficiently during the transition.
Solution Approach 2:
The patent segments the video stream transmission into main and backup streams that can be independently controlled. By discontinuing and enabling these streams in a specific sequence (enabling backup before discontinuing main), the system maintains redundancy and reliability while optimizing bandwidth usage during switching operations.
2Quantity of substance
If bandwidth is limited during switching, then bandwidth requirement is reduced, but compliance with SMPTE 2022-7 standard may be compromised
Solution Approach 1:
The backup video stream is enabled before the main video stream is discontinued, ensuring that at any point during switching, there are always two compliant streams available. This preliminary enabling action maintains SMPTE 2022-7 compliance while allowing efficient bandwidth management.
Solution Approach 2:
The patent ensures continuous compliance with SMPTE 2022-7 standards by maintaining the availability of two identical video streams throughout the switching process. The staggered discontinuation and enabling of main and backup streams ensures uninterrupted compliant transmission, preserving reliability without excessive bandwidth consumption.
3Speed
If main video stream is discontinued before backup is enabled, then switching speed is improved, but compliance with SMPTE 2022-7 standard is compromised
Solution Approach 1:
The backup video stream is enabled in advance before the main video stream is discontinued. This preliminary action ensures that compliance with SMPTE 2022-7 standards is maintained throughout the switching process, even though it extends the switching duration slightly compared to immediate discontinuation.
4Reliability
If backup video stream is enabled before main is discontinued, then compliance with SMPTE 2022-7 standard is maintained, but switching time increases
Solution Approach 1:
The backup video stream is enabled preliminarily before the main stream is discontinued, ensuring SMPTE 2022-7 compliance. While this extends switching time slightly, it guarantees that two compliant streams are always available, maintaining system reliability and standards compliance.
Solution Approach 2:
The patent maintains continuous compliance with SMPTE 2022-7 standards by ensuring that two identical video streams are always available during switching. The staggered stream management ensures uninterrupted compliant transmission, prioritizing reliability and standards adherence over minimal switching time.
Data Source
AI summary
A method for switching between different content streams to be ingested, processed, and delivered as an output stream by a media data processing device. Each content stream is −7 compliant and includes two identical video streams (main and backup) with identical IP packets. The switching process includes discontinuing transmission of a first of the main/backup video streams of a currently ingested first content stream, enabling transmission of a first of the main/backup video streams of a second content stream, switching from the first content stream to the second content stream, discontinuing transmission of a second one of the main/backup video streams of the first content stream, and enabling transmission of a second one of the main/backup video streams of the second video stream. For the short period of time associated with switching −7 compliance is not maintained but no additional bandwidth is required.