Dynamic Reference Color Lists for TV Check-in Authentication
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Solution Overview
Problem
Existing technologies for check-in operations during television broadcasts face challenges in scalability for large numbers of viewers, handling diversity in TV receivers and smartphones, and preventing illegitimate check-ins, particularly due to vulnerabilities in feature-based queries and image-based comparison methods.
Innovation Solution
An information processing system that uses client-side and server-side metadata generation based on reference color lists, where clients capture and process video frames, and servers compare metadata to authenticate viewer presence, ensuring high accuracy and scalability while preventing illegitimate check-ins by dynamic reference color distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image information itself is sent to the server side for comparison, then the technology is applicable even with untrusted input, but it is difficult to allow simultaneous check-in by a large number of viewers due to high data transmission load
Solution Approach 1:
The patent extracts only the essential color distribution features from the captured video frames and transmits this compressed metadata to the server, rather than sending the complete image data. This extraction approach maintains verification reliability while dramatically reducing the data transmission load, enabling simultaneous check-ins by many viewers.
Solution Approach 2:
The patent creates a simplified copy of the video content in the form of color distribution histograms and metadata, which preserves the essential characteristics needed for authenticity verification while being much more efficient for transmission and processing than the original video data.
2Productivity
If feature quantities are extracted from pre-stored video for check-in comparison, then the process is efficient, but there is vulnerability to illegitimate acts such as cheating
Solution Approach 1:
The patent uses dynamic reference color lists that are generated and updated in real-time based on the actual broadcast content, rather than relying on static pre-extracted features. This dynamic approach ensures that the verification system adapts to the current video content, making it resistant to cheating while maintaining efficient processing.
Solution Approach 2:
The patent changes the verification parameters by using color distribution histograms and metadata that are dynamically generated from the captured frames, rather than comparing against fixed pre-extracted features. This parameter transformation maintains processing efficiency while significantly improving anti-cheating capability.
3Device complexity
If the same reference color list is used for all clients, then the system is simple to implement, but it cannot prevent illegitimate check-in by using fake television video
Solution Approach 1:
The patent assigns different reference color lists to different clients or client groups, creating local variations in the verification parameters. This differentiation allows the system to maintain simplicity in overall structure while preventing illegitimate check-ins, as each client must match the specific reference color list assigned to them.
Solution Approach 2:
The patent introduces asymmetry by using different reference color lists for different clients rather than a uniform reference list for all. This asymmetric approach prevents cheating while keeping the system implementation relatively simple, as the differentiation is managed through centralized distribution of reference color lists.
Data Source
AI summary
A reference-color-list generating unit of a server generates a reference color list on the basis of reference color lists stored in a CLDB, at a timing reported from a program-information management unit. An S-metadata generating unit generates S metadata from TV program information stored in an RVDB and the reference color list. A C-metadata generating unit of a user terminal generates C metadata from individual information of each frame constituting a captured image and the reference color list. An authenticity determining unit determines whether to permit or deny check-in by a user on the basis of the obtained C metadata, the S metadata extracted by the CMDB, and program detail information managed by the program-information management unit.