Content Transmission Authentication Using Network Delay Limits
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Solution Overview
Problem
Existing methods for copyright protection of video/audio information transmitted over networks, such as LAN, do not adequately prevent illegal copying and do not restrict content usage within personal use regions, especially when devices are connected to the Internet, allowing unauthorized access and distribution.
Innovation Solution
A transmitter and receiver apparatus system that employs network communication processing, authentication, encryption, and equipment information management, including a timer for authentication and registration of device information, to ensure secure and authorized content transmission and usage within personal use limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If contents are transmitted through network without authentication and encryption, then ease of operation is improved, but copyright protection deteriorates
Solution Approach 1:
The system performs authentication and encryption operations before content transmission begins. The transmitter apparatus encrypts contents with authentication information before transmission, and the receiver apparatus verifies authentication in advance, preventing unauthorized copying before it occurs.
Solution Approach 2:
Authentication information acts as an intermediary between the transmitter and receiver apparatuses. This intermediary mechanism enables controlled access and copyright protection without requiring complex manual authorization processes, maintaining ease of operation while ensuring reliability.
2Reliability
If authentication and encryption processing is added to content transmission, then copyright protection is improved, but device complexity increases
Solution Approach 1:
The transmitter and receiver apparatuses automatically perform authentication and encryption operations without requiring manual intervention. The systems self-manage the complex processing tasks through automated protocols, reducing the perceived complexity for users while maintaining robust copyright protection.
Solution Approach 2:
The system changes the state of contents by encrypting them and embedding authentication information. This parameter transformation converts unprotected digital data into protected formatted data, achieving copyright protection through systematic parameter modification rather than complex structural changes.
3Adaptability or versatility
If contents are made freely copyable over network, then adaptability is improved, but harmful factors increase
Solution Approach 1:
The system applies preliminary anti-action by encrypting contents and attaching authentication information before transmission. This pre-emptive measure prevents illegal copying and unauthorized distribution, countering harmful factors before they can occur while still allowing legitimate access.
Solution Approach 2:
The copyright protection system dynamically adapts to different transmission scenarios by automatically applying authentication and encryption protocols. The system remains flexible in handling various content types and transmission paths while consistently preventing illegal copying through adaptive security measures.
Data Source
AI summary
For achieving the protection of copyright, by suppressing illegal copy production thereof, in particular, when transmitting contents with using a wired or wireless LAN, as well as, for preventing the transmission of contents from deviating from a range of a personal use thereof, a contents transmitter apparatus and a contents receiver apparatus make an authentication, mutually, before transmitting contents therebetween. At the time when conducting this authentication, measurement is made upon a time-period up to arrival of a receipt confirmation responding to the transmission of an authentication request or a response to the authentication; then, only in the case when this value measured does not exceed a predetermined upper value, the transmission is conducted on the contents encrypted, and at the same time, address information and equipment information unique to the apparatus are registered, thereby conducting the transmission of encrypted contents, but without conducting the time-measurement thereon, when transmitting the contents, again. Also, while conducting the time-measurement periodically, dynamic management is made on the registration information, so that the contents thereof are suitable for the network structure at the present.