Hierarchical Publish-Subscribe Network for Video Special Effects
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Solution Overview
Problem
Current systems for providing special effects like subtitles and captions in video broadcasting lack user control and flexibility, as they are often not customizable and cannot be easily turned off or modified by viewers, and do not efficiently distribute transformed data streams to user interfaces.
Innovation Solution
A hierarchical publish/subscribe network is employed, where a top-level broker receives data streams from a primary content provider and distributes them to service providers, which can modify and transform the data streams in response to user subscription requests, ensuring the transformed streams are presented to user interfaces in association with video information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional subtitle and caption systems are used, then viewers can receive supplementary information, but users cannot control or customize the special effects
Solution Approach 1:
The system segments the subtitle/caption delivery into multiple independent data streams that can be individually controlled. Each special effect (subtitles, captions, teletext) is treated as a separate subscribable entity, allowing users to select and control specific effects independently rather than as a bundled system.
Solution Approach 2:
The system transforms static, broadcaster-controlled subtitle delivery into a dynamic, user-controllable system. Users can subscribe to, unsubscribe from, and customize various special effects in real-time, making the system adaptable to individual preferences while maintaining manageable complexity through standardized interfaces.
2Ease of operation
If subtitles and captions are provided by the broadcaster, then supplementary information is available, but the information cannot be easily turned off or modified by viewers
Solution Approach 1:
The system introduces an intermediary layer (the publish/subscribe system) between the broadcaster and the viewer. This intermediary enables users to selectively subscribe to and modify special effects without requiring changes to the broadcaster's transmission system, simplifying user control while maintaining a relatively simple distribution architecture.
3Adaptability or versatility
If a publish/subscribe network is used to distribute special effects, then user control and flexibility are improved, but data stream transformation and distribution complexity increases
Solution Approach 1:
The publish/subscribe network segments the distribution of special effects into separate, independently manageable data streams. Each effect type (subtitles, captions, teletext) can be published and subscribed to separately, allowing for granular control and transformation without requiring complex coordination across the entire system.
4Adaptability or versatility
If multiple data streams are distributed to multiple users, then personalized special effects are provided, but network traffic and distribution efficiency decrease
Solution Approach 1:
The system uses selective copying of data streams based on user subscriptions. Instead of broadcasting all possible special effects to all users, the publish/subscribe mechanism efficiently copies and delivers only the subscribed data streams to relevant users, reducing unnecessary network traffic while maintaining full personalization capability.
Data Source
AI summary
A hierarchical publish/subscribe network is employed to produce and distribute special effects to users to complement displayed video information. A top level broker in the network receives a plurality of data streams corresponding to a respective plurality of primary special. A service provider makes a subscription request for one of said primary special effects and receives the corresponding selected data stream. The selected data stream is transformed into at least one further data stream, corresponding to a further special effect. The further data stream is published to a lower level broker associated with the service provider. In response to a user subscription request for the further special effect, the lower level broker publishes the further data stream to a user interface for presentation to the user in association with the displayed video information.