Content Transmitter Authentication for Secure Remote Access
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Solution Overview
Problem
Conventional techniques restrict access to copy-protected content from outside the user's home network, limiting mobility and convenience for users who want to access their content from different locations.
Innovation Solution
A content transmitter apparatus and receiver apparatus system that allows authorized users to access and view copy-protected content from outside the home network by encrypting and retransmitting content, with advanced authentication and registration processes to ensure secure and controlled access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional copy protect techniques are used to encrypt content and restrict access within the home network, then content security is improved, but user mobility and accessibility from outside the home network deteriorates
Solution Approach 1:
The patent introduces an intermediary authentication process between the content transmitter and receiver apparatuses. When a receiver apparatus outside the home network requests content, the system performs authentication to verify the requestor's identity and permissions before allowing content transmission. This intermediary verification mechanism enables secure remote access while maintaining content protection, resolving the contradiction between security and accessibility.
2Reliability
If content is encrypted with copy protection to prevent unlimited copying, then copy control is improved, but the ability to legally share content with authorized users deteriorates
Solution Approach 1:
The patent implements different authentication and permission levels for different receiver apparatuses. The content transmitter apparatus stores management information that identifies specific authorized receiver apparatuses and their permission levels. This local quality differentiation allows the system to maintain strict copy control for unauthorized devices while enabling flexible sharing with authorized users, resolving the contradiction between copy protection and legitimate sharing.
3Reliability
If strict authentication is required for all content access to maintain security, then content protection is improved, but user convenience and access speed deteriorates
Solution Approach 1:
The patent performs authentication and permission verification in advance by storing management information in the content transmitter apparatus that pre-identifies authorized receiver apparatuses. When content access is requested, the system checks against this pre-stored information rather than performing full authentication each time. This preliminary action approach maintains strong content protection while significantly reducing authentication time and improving user convenience.
Data Source
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AI summary
A content transmitter apparatus (100) is provided which decides whether to permit a content receiver apparatus (300) at a content transmission destination to retransmit content to another content receiver apparatus located inside a house and transmits to the content receiver apparatus the content along with an identifIer indicating a permission or prohibition of the content retransmission. A content receiver apparatus is also provided which, when it receives encrypted content from the content transmitter apparatus, checks an identifier received together with the content in executing the content retransmission to another content receiver apparatus located outside the house. If the identifier is found to permit the content retransmission, the content receiver apparatus encrypts and retransmits the content to the outside-house content receiver apparatus. If the identifier is found to not permit the content retransmission, the content receiver apparatus does not retransmit the content to the outside of the house.