Hybrid Broadcast Backchannel Streaming Delivery
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Solution Overview
Problem
Existing multimedia streaming technologies face limitations in bandwidth and server capabilities, leading to slow content delivery, especially as countries transition from analog to digital formats, restricting users' access to high-speed multimedia content.
Innovation Solution
A combined broadcast and backchannel approach is employed, where a broadcaster sends streamlets of multimedia content in packets, including a table of contents, using digital broadcast standards, and the receiving device processes and displays streamlets while requesting additional data through a backchannel communication link to ensure seamless and fast content delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional unicast streaming is used, then server control and content delivery are simplified, but bandwidth limitations and server capability constraints reduce content delivery speed
Solution Approach 1:
The patent combines broadcast and unicast (backchannel) delivery modes into a hybrid system. Broadcast delivers common content segments efficiently to multiple users, while unicast backchannel handles user-specific requests and interactions. This merging resolves the contradiction by achieving high delivery speed through broadcast while maintaining server control through backchannel, without requiring complete system redesign.
Solution Approach 2:
The content delivery system is segmented into broadcast channel for common content and backchannel for individualized content. This segmentation allows different delivery mechanisms to handle different types of content traffic, improving overall delivery speed while keeping each subsystem relatively simple and manageable.
2Productivity
If broadcast delivery is used, then bandwidth efficiency and content delivery speed are improved, but device complexity and system coordination requirements increase
Solution Approach 1:
The receiving device acts as an intermediary that coordinates between broadcast input and backchannel communication. It manages the complexity of synchronizing broadcast content with backchannel requests, buffering and processing data from both channels, and presenting unified content to the user. This local intermediary approach distributes system complexity from central servers to individual devices.
Solution Approach 2:
The system performs preliminary actions by pre-delivering content segments through broadcast before users request them individually via backchannel. This advance content availability through broadcast reduces the coordination burden during actual content access, as the bulk of content delivery is already completed through the efficient broadcast channel.
3Speed
If digital broadcast standards are implemented, then content delivery speed and user access capability are improved, but transition complexity and infrastructure requirements increase
Solution Approach 1:
The system dynamically adapts between different delivery modes (broadcast and backchannel) based on content type, user behavior, and network conditions. This dynamic flexibility allows gradual implementation and adaptation during the transition from analog to digital, reducing implementation complexity while maintaining high delivery speeds through optimal mode selection.
Data Source
AI summary
Streaming content may be delivered through a combination of broadcast and a backchannel. A desired streamlet may be selected from the packet of information and presented with a display. A remainder of a data stream associated with the streamlet may be requested and received from via a backchannel while the desired streamlet is being presented. The remaining data stream may then be presented with the display.