DRM Server Authentication for Mobile Video Content
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Solution Overview
Problem
Current digital rights management systems for wireless communication devices lack efficient mechanisms for securely transferring and playing copyrighted content between digital video recorders (DVRs) and mobile video players (MVPs) over wireless networks, risking unauthorized access and playback.
Innovation Solution
A method and system where a network server maintains accounts for both MVPs and DVRs, using unique identifiers to authenticate and encrypt content transfers, ensuring that only authorized devices can access and play the content, and implementing transcoding to accommodate different playback capabilities of MVPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If content is transferred directly from DVR to MVP without authentication, then transfer speed is improved, but security and copyright protection deteriorate
Solution Approach 1:
The patent introduces a content authorization server as an intermediary between the DVR and MVP. The server receives content requests from the MVP, authenticates the mobile station, verifies copyright status, and controls the content transfer process. This intermediary ensures secure authentication and copyright protection while managing the transfer process, resolving the contradiction between transfer speed and security.
2Device complexity
If content is transferred from DVR to MVP without authentication mechanism, then system complexity is reduced, but unauthorized access and playback increase
Solution Approach 1:
The patent implements preliminary authentication action before content transfer. The content authorization server authenticates the mobile station and verifies copyright status before allowing any content transfer from the DVR. This preliminary action prevents unauthorized access and playback while maintaining manageable system complexity through centralized authorization control.
3Loss of time
If content is transferred without transcoding, then transfer time is reduced, but compatibility with different MVP playback capabilities deteriorates
Solution Approach 1:
The patent applies parameter changes through transcoding to adapt content to different MVP playback capabilities. The content authorization server transcodes the content into formats compatible with various mobile stations before transfer. This ensures broad compatibility across different devices while managing transfer time efficiently through automated transcoding processes.
Data Source
AI summary
Methods and systems are provided for digital rights management for mobile devices. An account is maintained for a subscriber. The account is associated with a mobile video player (MVP) and a digital video recorder (DVR). The MVP is served by a wireless carrier, and the DVR is connected to a packet-data network. A first content request is received from the MVP. The first content request identifies requested content and includes an identifier of the MVP that was added to the first content request by the wireless carrier to verify that the MVP sent the first content request. The identifier of the MVP is used to identify the account. A second content request, which identifies the requested content, is sent to the DVR. The requested content is received from the DVR, and then sent to the MVP via the wireless carrier, for receipt and playing by the MVP for the subscriber.