CRC-Formatted Content Streams for Reliable Hybrid TV Delivery
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Solution Overview
Problem
Satellite television systems face inefficiencies in resource allocation due to broadcasting less popular content, which can be costly and wasteful, especially during peak viewing times, as they require significant satellite resources.
Innovation Solution
The method involves dividing content files into portions, forming a leading data portion, determining a cyclic redundancy check (CRC) value, and creating a trailing data portion with the CRC value, which are then combined into a content data stream for accurate transmission, allowing for efficient communication through both satellite and communication networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If satellite television systems broadcast less popular content during peak viewing times, then content availability is improved, but satellite resource efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts content delivery by transitioning from traditional satellite broadcasting to on-demand broadband delivery based on content popularity and timing. Less popular content is delivered via broadband connection during off-peak times, while popular content receives priority satellite bandwidth allocation during peak viewing times, optimizing resource efficiency.
Solution Approach 2:
The system changes the delivery parameter from uniform satellite broadcasting to differentiated delivery methods. By implementing CRC-based error detection and correction, the system ensures reliable content delivery across different transmission mediums (satellite and broadband), enabling flexible parameter adjustment for content priority and delivery timing.
2Adaptability or versatility
If satellite resources are allocated to broadcast less popular content, then content diversity is improved, but transmission cost increases
Solution Approach 1:
The system segments content delivery into two distinct pathways: popular content delivered via satellite broadcast during peak times, and less popular content delivered via broadband connection during off-peak times. This segmentation allows the system to maintain content diversity while significantly reducing satellite resource allocation for niche content.
Solution Approach 2:
The system performs preliminary content delivery by making less popular content available for download via broadband connection before peak viewing times. Users can download content in advance, and the system uses CRC verification to ensure content integrity, eliminating the need for expensive real-time satellite transmission of low-demand content.
3Loss of energy
If content is delivered via broadband connection for on-demand access, then satellite resource efficiency is improved, but transmission reliability may deteriorate
Solution Approach 1:
The system implements a feedback mechanism using cyclic redundancy check (CRC) values to verify content integrity during broadband transmission. The transmitting device calculates CRC values and embeds them with content data, allowing the receiving device to detect and correct transmission errors, thereby maintaining high reliability for on-demand broadband content delivery.
4Reliability
If CRC values are calculated and embedded with content data, then error detection capability is improved, but data processing complexity increases
Solution Approach 1:
The system employs self-service error detection where each content transmission includes its own CRC verification capability. The transmitting device automatically calculates and embeds CRC values, and the receiving device automatically verifies them, eliminating the need for external error checking mechanisms and simplifying the overall system architecture despite the added processing step.
Data Source
AI summary
A communication system 100 includes a content repository 274 storing a content file and a video transport processing system 223 receiving the content file and dividing the content file into a plurality of content file portions, forming a leading data portion, determining a cyclic redundancy check value, forming a trailing data portion with the cyclic redundancy check value therein, forming a content data stream from the leading data portion, the plurality of content file portions and trailing data portion. The system also includes a system communicating the content data stream to a user device.