Broadcast Data Receiver Linking via Telephone Line Authorization
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Solution Overview
Problem
Broadcasters face revenue loss due to second broadcast data receivers being used in different premises, leading to unauthorized sharing or sale, as existing solutions like RS232 connections are costly and not foolproof.
Innovation Solution
A system where two broadcast data receivers are connected via a telephone line, with one enabling the other using a signal, incorporating a timer that requires periodic authorization via a secure code, ensuring both receivers operate within the same premises and preventing unauthorized use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RS232 data connection is provided between two BDRs, then the BDRs can be ensured to be used in conjunction with each other in the same premises, but it requires adapters and additional cabling which is expensive and not entirely foolproof
Solution Approach 1:
The patent introduces a telecommunications network as an intermediary medium to enable communication between BDRs. Instead of direct RS232 connections requiring physical adapters and cabling, the system uses existing telephone lines to transmit authorization signals, thereby eliminating the need for additional hardware while maintaining security.
Solution Approach 2:
The patent leverages the existing telecommunications network infrastructure for a new purpose - BDR authorization and communication. By using the widely available telephone line network, the system avoids requiring dedicated cabling or adapters, making the solution both cost-effective and universally applicable without adding device complexity.
2Ease of operation
If RS232 data connection is provided between two BDRs, then communication between BDRs is established, but it is not entirely foolproof as extended connection can be provided between the two BDRs to allow the BDRs to be used in different premises
Solution Approach 1:
The patent implements a feedback mechanism where the first BDR continuously monitors the telecommunications line for specific signal patterns indicating the presence of a second BDR. The system uses timed authorization codes and periodic verification to ensure both BDRs remain in the same premises, providing ongoing security verification rather than a one-time check.
Solution Approach 2:
The system employs periodic authorization verification through timed authorization codes that must be exchanged between BDRs at regular intervals. This periodic action ensures continuous verification that both BDRs remain in the authorized location, preventing unauthorized relocation while maintaining ease of operation for legitimate users.
3Reliability
If a timer is provided in the BDR to limit functional period, then the BDR will only function for a limited period of time upon activation, but resetting requires input of authorisation code which must be securely communicated
Solution Approach 1:
The patent uses the telecommunications network as an intermediary to securely transmit authorization codes between the head-end equipment and BDRs. This eliminates the need for complex local secure communication hardware in each BDR, as the trusted telephone line infrastructure handles the secure code transmission, simplifying the overall system while maintaining security.
Data Source
AI summary
A broadcast data receiver system is provided and a method of operating the system. The system includes a first broadcast data receiver (BDR) (2) located at a first location, typically in a premises. The BDR (2) receives video, audio and/or auxiliary digital data broadcast from a remote location via cable, satellite or terrestrial means. The BDR processes the data and displays the processed data on a display screen (10) and/or audio data via speakers connected thereto. At least a second broadcast data receiver (8) is provided at least a second location typically in the same premises. One of the first and second BDRs (2, 8) is made functional by a signal received from the other of the first and second BDRs, via a telecommunications line (4) provided in the premises and connecting the first and at least second BDRs together, thereby ensuring that both BDRs are connected before operation of the two BDRs can be achieved.