Set-Top Box Unauthorized Use Detection via Master Identifier Comparison
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Solution Overview
Problem
Unauthorized use of set top boxes for satellite programming is a significant issue, leading to revenue loss for content providers as they cannot prevent sharing of services, which hampers investment in improving service features.
Innovation Solution
A system and method that compares a master identifier generated within a network of user devices with an expected identifier communicated from a head end, generating an error signal and disabling the service if they do not match, thereby preventing unauthorized use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If service sharing is allowed among user devices, then ease of operation and user convenience are improved, but unauthorized use increases and revenue is lost
Solution Approach 1:
The system performs preliminary actions by establishing a baseline master identifier for the authorized network configuration before service sharing occurs. This pre-established reference point enables later detection of unauthorized changes without interfering with legitimate service sharing operations.
Solution Approach 2:
The system implements feedback by continuously monitoring the master identifier and comparing it against the baseline. When changes are detected, the system provides feedback through error signals that can disable service, creating a closed-loop control system that prevents unauthorized use while allowing legitimate sharing.
2Reliability
If identifier verification is implemented to prevent unauthorized use, then reliability and security are improved, but device complexity increases
Solution Approach 1:
The verification functionality is extracted as a separate, dedicated module within the set-top box. This modular approach isolates the complexity of identifier verification into a specific component, making the overall system more manageable and maintainable while ensuring reliable security checks.
Solution Approach 2:
The system performs self-verification by automatically comparing the current master identifier against the baseline without requiring external intervention. This self-service capability reduces operational complexity while maintaining high reliability in authorization checks.
3Loss of energy
If service disabling is implemented upon unauthorized detection, then loss of revenue is reduced, but ease of operation deteriorates due to service interruptions
Solution Approach 1:
The system applies preliminary anti-action by implementing error signals that can disable service before significant revenue loss occurs from unauthorized use. This preventive measure stops unauthorized access early, reducing overall revenue loss while maintaining service continuity for authorized users through selective disabling.
Data Source
AI summary
A system and method for determining unauthorized use of a first user device associated with a local network that includes a plurality of user devices associated with a user account. A comparison module compares a first master identifier determined within the local network and an expected master identifier generated outside the local network. A disable module generates an error signal in response to comparing.