Digital Content Access Control via Authorized Device Identifier
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Solution Overview
Problem
Current systems for accessing digital multimedia content on mobile devices often result in suboptimal viewing experiences due to small screens and poor audio quality, and lack control over which devices can access purchased content, including parental control limitations.
Innovation Solution
A method for managing access to digital content by designating authorized recipient devices and transmitting access data, using an electronic key connected to a content server, which includes an identifier and electronic signature for secure verification, allowing only authorized devices to access the content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If content is accessed on mobile devices, then portability and accessibility are improved, but display quality and audio quality deteriorate
Solution Approach 1:
The patent introduces a transfer device as an intermediary component that receives content from a first device (mobile device) and transmits it to a second device (restitution device with larger screen and better audio). This mediator enables high-quality restitution while maintaining the portability benefit of mobile access, as the mobile device only needs to transfer content rather than reproduce it with high fidelity.
2Adaptability or versatility
If all transfer devices are granted access to content, then device versatility is improved, but access control and security deteriorate
Solution Approach 1:
The patent implements local quality by assigning different access rights to different transfer devices. Each transfer device receives an identifier that is specifically authorized for certain content, rather than all devices having universal access. This allows the system to maintain versatility across multiple devices while enforcing granular access control policies.
Solution Approach 2:
The system performs preliminary authorization by verifying the identifier of each transfer device before granting access to content. The content server checks whether the transfer device's identifier is authorized for the requested content, and only provides access data if the verification succeeds. This preliminary check ensures security is maintained while allowing versatile device access.
3Ease of operation
If access data is transmitted to multiple devices, then user convenience is improved, but access security and control deteriorate
Solution Approach 1:
The patent applies local quality by providing different access data to different transfer devices based on their specific authorization status. Each device receives access data tailored to its authorized content, rather than all devices receiving identical universal access data. This maintains security while enabling convenient multi-device access.
Solution Approach 2:
The system implements feedback by having transfer devices send their identifiers to the content server for verification before receiving access data. The content server responds with access data only if the identifier is authorized, creating a feedback loop that ensures security is maintained while enabling convenient access for authorized devices.
Data Source
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AI summary
The invention deals with a method of managing access, by an off-site device (CL1&CL3), to a content stored on a contents server (SCNT), an off-site device being associated with an identifier, characterized in that it comprises a prior step of requesting an authorization of access to the content, by a device (MOB1), the request for authorization being accompanied by at least one identifier of off-site device (CL1&CL3) authorized to access the content, followed by a step of making available the data for access (TK/SGN(TK)) to the content, the access data including said at least one identifier (CL1&CL3), a step of access to the content including i. a step of obtaining the access data by the off-site device (CL1), ii. a request for access to the content by the off-site device, the request including the access data and the identifier of the off-site device originating the request, iii. a reception of the content by the off-site device if the identifier of the off-site device (CL1) originating the transmission corresponds to an identifier authorized to access the content.