Device Authorization via Video Content Fingerprinting
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Solution Overview
Problem
Existing systems lack an efficient method to automatically authorize and authenticate devices to receive content from a content distributor without requiring users to provide access credentials, especially in scenarios where multiple devices are associated with a single user.
Innovation Solution
The system identifies content distributors by calculating fingerprints of video or audio content and determining time delays, allowing for automatic authorization and authentication of devices through a device authorization system that compares captured fingerprints with reference fingerprints and time delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional credential-based authorization is used, then security is maintained, but user convenience and ease of operation deteriorate due to manual credential input requirements
Solution Approach 1:
The system enables devices to automatically authorize themselves by detecting content distributors through fingerprint analysis. The device autonomously identifies the content distributor and initiates authorization without requiring user intervention or credential input, making the system self-serve the authorization process.
Solution Approach 2:
The patent introduces an intermediary authorization system that mediates between devices and content distributors. This intermediary system uses fingerprint detection and distributor identification to bridge the authorization gap, eliminating the need for direct credential exchange while maintaining security through automated verification.
2Ease of operation
If automated fingerprint-based identification is implemented, then ease of operation improves by eliminating credential input, but device complexity increases due to fingerprint calculation and comparison mechanisms
Solution Approach 1:
The patent extracts the complex fingerprint calculation and comparison operations from the end-device and relocates them to a centralized authorization server. The client device only needs to capture content signals and transmit them for analysis, significantly reducing local device complexity while maintaining automated authorization capabilities.
Solution Approach 2:
The system replaces manual credential input mechanisms with automated content-based identification. Instead of mechanical or manual authentication processes, the patent uses automated fingerprint detection and digital signal analysis to identify content distributors and authorize devices, substituting complex manual procedures with streamlined automated processes.
3Measurement precision
If content distributor identification through fingerprint analysis is used, then authorization accuracy improves, but processing time increases due to fingerprint calculation and matching operations
Solution Approach 1:
The patent implements preliminary actions by pre-calculating and storing reference fingerprints for known content distributors in a database. When authorization is needed, the system only needs to compare captured content fingerprints against these pre-prepared references, significantly reducing processing time while maintaining high identification accuracy.
Solution Approach 2:
The system skips time-consuming full fingerprint analysis by using incremental matching and early termination strategies. When sufficient matching confidence is achieved during fingerprint comparison, the process terminates early, rushing through the authorization decision without completing exhaustive analysis, thus reducing processing time while preserving accuracy.
Data Source
AI summary
Methods and systems to authorize devices and/or perform other actions based on identifying content distributors are described. In some example embodiments, the methods and systems access video content playing at a client device, calculate fingerprints of a portion of the video content, identify a distributor of the video content based on the fingerprints, and perform an action in response to the identification of the distributor of the video content, such as actions to authorize the client device or other associated devices (e.g., second screens) to receive content from the distributor, actions to present sponsored content to the client device or associated devices, and so on.