Video Receiver Blackout Data Segmentation for Real-Time Access Control
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Solution Overview
Problem
Conventional satellite video systems experience latency and customer confusion when handling back-to-back events due to delayed updating of blackout data, leading to inconsistent access control and misinformation about available content.
Innovation Solution
A method and system for managing blackout information with low latency, using a video services receiver that processes both system-wide and service-specific blackout data, including a join-in-progress indicator, to grant or deny access to events in real-time, reducing the delay in applying blackout rules for back-to-back events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If system-wide blackout data is updated in real-time, then access control accuracy is improved, but system complexity and data transmission overhead increase
Solution Approach 1:
The patent segments blackout data into two distinct types: system-wide blackout data (stored in SI tables) and service-specific blackout data (stored in ECMs). This segmentation allows the system to manage different levels of blackout information separately, enabling real-time updates for service-specific data without requiring complete system-wide retransmission, thus improving access control accuracy while managing system complexity.
Solution Approach 2:
The patent applies local quality by making service-specific blackout data updateable in real-time at the service level without affecting the entire system. The set-top box can independently update and apply service-specific blackout information from ECMs, allowing localized real-time changes while maintaining system-wide stability and avoiding unnecessary global data transmission overhead.
2Speed
If blackout data is updated frequently for back-to-back events, then response time is improved, but data transmission overhead increases
Solution Approach 1:
The patent segments blackout data into system-wide (SI tables) and service-specific (ECMs) portions. Service-specific blackout data can be updated frequently and applied immediately at the service level without triggering system-wide retransmission. This allows fast response to back-to-back event changes while minimizing data transmission overhead by updating only the necessary service-specific portion rather than the entire system-wide database.
Solution Approach 2:
The patent extracts service-specific blackout information from the system-wide SI tables and places it in separate ECMs (Entitlement Control Messages). This extraction allows independent, real-time updates of service-specific blackout data without requiring retransmission of the entire system-wide SI database, thereby reducing data transmission overhead while maintaining fast response capability for event changes.
3Speed
If service-specific blackout information is maintained separately, then update speed is improved, but storage requirements increase
Solution Approach 1:
The patent applies local quality by maintaining service-specific blackout information separately in ECMs, allowing real-time updates at the service level. While this does increase storage requirements, the patent manages this trade-off by updating only the necessary service-specific data rather than maintaining complete duplication of system-wide data, and by leveraging the existing ECM infrastructure that is already transmitted to set-top boxes for access control purposes.
Data Source
AI summary
The video services receiver system and related operating methods disclosed herein enable better management of blackout information for events associated with a broadcast service, such as a satellite television service. A system for providing video content to a display for viewing by a customer includes a receiver interface configured to receive data associated with a service, a display interface for the display, at least one memory element configured to store dated blackout information for events on the service, and to store frequently updated blackout information for events on the service, and a processor coupled to the receiver interface, the display interface, and the at least one memory element. The processor is configured to control access to a current event on the service by analyzing both the dated blackout information and the frequently updated blackout information. The processor is configured to present video content associated with the current event if access is granted.