Subscriber Authentication via Video Signal Luminance Modulation
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Solution Overview
Problem
Current video signal transmission methods lack a means to authenticate subscribers by embedding subscriber information, which is essential for ensuring authorized access to video content.
Innovation Solution
A system and method for embedding subscriber authentication information into video signals by modulating the luminance or chrominance of the video signal with supplemental data, allowing the authentication data to be encoded and decoded within the video signal itself, ensuring that only authorized subscribers can receive and access the content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If secondary information is transmitted by replacing active portions of the video signal or adding data to non-viewable scan lines, then the video signal can carry additional data, but the secondary information may be stripped from the video signal transmission before viewing
Solution Approach 1:
The patent applies parameter changes by modulating the luminance or chrominance parameters of the video signal to embed subscriber authentication information. This allows the authentication data to be encoded within the existing video signal parameters rather than adding separate data streams or replacing video content, thereby preventing stripping while maintaining information integrity
Solution Approach 2:
The patent embeds the authentication information nested within the video signal structure itself, specifically within the luminance or chrominance channels. This nesting approach ensures the data remains integrated with the video signal and cannot be easily separated or stripped by broadcast operators
2Reliability
If subscriber authentication information is embedded into the video signal by modulating luminance or chrominance, then secure authentication is enabled, but the video signal processing complexity increases
Solution Approach 1:
The patent makes the video signal processing system multi-functional by enabling it to perform both standard video transmission and subscriber authentication simultaneously. The same luminance or chrominance channels used for video content also carry authentication data, eliminating the need for separate dedicated authentication signal paths and reducing overall system complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure and efficient subscriber authentication by embedding and decoding authentication information within the video signal, ensuring that only authorized users can access the content, thereby preventing unauthorized access.
Implementation Method 1
modulating the luminance or chrominance of the video signal with supplemental data
Implementation Method 2
modulating the luminance or chrominance of the video signal with supplemental data
Data Source
AI summary
Systems and methods for authenticating subscribers of video signals are disclosed. In accordance with the various embodiments, a subscriber authentication system includes an encoder coupled to a source of video signals and a source of subscriber data. The encoder generates encoded video signals having at least a portion of the subscriber data encoded in the video signals. An authentication indicating apparatus operable to receive the encoded video signals and to decode the received signals generates an authentication status for the subscriber.