Content Item Identifier Validation Without Decoding
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Solution Overview
Problem
Current content identification methods, such as fingerprinting and watermarking, are computationally expensive due to the need for decoding content items from encoded representations to baseband level for identifier verification, which hampers efficiency and increases processing costs.
Innovation Solution
A system that generates and validates content item identifiers based on both baseband and encoded representations, allowing for identifier validation without decoding, using a second identifier generated from the encoded representation to match an alleged identifier, thus reducing computational expense and ensuring identifier validity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If content identification is performed by decoding encoded content to baseband level for fingerprint verification, then identification accuracy is improved, but computational cost and processing time increase significantly
Solution Approach 1:
The patent divides the identification system into two parts: a first identifier generated from baseband content (providing accurate content identification) and a second identifier generated from encoded content (enabling efficient verification). This segmentation allows the system to use the computationally inexpensive second identifier for routine verification while maintaining the ability to use the first identifier when high accuracy is needed.
Solution Approach 2:
The patent performs preliminary generation of both the first identifier (from baseband) and the second identifier (from encoded form) before content distribution. This preliminary action enables receiving devices to verify content integrity using the pre-generated second identifier without needing to decode the content, thus improving processing efficiency while maintaining identification accuracy.
2Reliability
If decoding is performed to validate content identifiers, then identifier validity is ensured, but energy consumption and processing resources increase
Solution Approach 1:
The patent creates a second identifier that is a derived representation of the content in its encoded form, serving as a copy or proxy for the first identifier. This second identifier can be verified without accessing or decoding the original content, thus ensuring identifier validity while minimizing energy consumption and processing resource usage.
Solution Approach 2:
The second identifier is generated in advance from the encoded content before distribution. This preliminary generation allows receiving devices to validate content integrity by comparing the received second identifier with a locally generated one, eliminating the need for energy-consuming decoding operations during content verification.
3Productivity
If fingerprint verification is performed on encoded content without decoding, then processing efficiency is improved, but ability to verify identifier accuracy decreases
Solution Approach 1:
The patent segments the identifier system into two complementary identifiers: the first identifier derived from baseband content for accurate content representation, and the second identifier derived from encoded content for efficient verification. This segmentation allows the system to maintain verification accuracy by using the second identifier specifically designed for encoded content validation, while achieving high processing efficiency by avoiding decoding operations.
Data Source
AI summary
A system (50) is used for identifying a content item. The system (50) receives a received first identifier (101) of the content item, the received first identifier being based on at least part of a baseband level representation of the content item; a received second identifier (102) of the content item, the received second identifier being based on at least part of an encoded representation (103) of the content item; and the at least part of the encoded representation (103) of the content item. The system comprises a second identifier generator (53) for generating a generated second identifier based on the at least part of the encoded representation (103) of the content item; and a validation unit (54) for validating the received first identifier as a valid first identifier of the content item if the generated second identifier matches the received second identifier.