Watermark-Based Live Broadcast Content Identification
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Solution Overview
Problem
Existing multimedia content management systems face issues with metadata loss and unreliability when content is transformed or processed, particularly in scenarios like digital to analog conversion or transcoding, leading to loss of interactive features and services.
Innovation Solution
The implementation of automatic content recognition using embedded watermarks that are imperceptible to viewers and immune to content processing operations, allowing for the detection of metadata and temporal position, enabling retrieval of additional content and interactive services through a standardized watermark structure and system architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metadata is interleaved, prepended or appended to multimedia content, then content management and interactive services are enabled, but metadata is lost when content is transformed or processed
Solution Approach 1:
The patent extracts metadata from the content stream and stores it separately in a database, while embedding only lightweight identifiers (watermarks) in the content. This separation prevents metadata loss during content transformation while maintaining the ability to retrieve complete metadata through the identifiers.
Solution Approach 2:
The patent introduces watermarks as intermediary elements embedded in the content that serve as keys to retrieve the actual metadata from a separate database. These watermarks survive content transformation and enable metadata recovery without being directly affected by processing operations.
2Adaptability or versatility
If metadata is included in the content stream, then interactive features are enabled, but additional bandwidth is occupied
Solution Approach 1:
The patent extracts extensive metadata from the content stream and stores it separately, transmitting only compact watermark identifiers within the content. This dramatically reduces the quantity of data transmitted over the content channel while preserving full interactive service capability through separate metadata retrieval.
Solution Approach 2:
The patent segments information into two parts: compact identifiers embedded in the content stream and detailed metadata stored separately. This segmentation allows the content channel to carry only essential routing information while the separate metadata repository provides comprehensive service information.
3Adaptability or versatility
If standard metadata formats are used, then interoperability is supported, but metadata can be lost during transcoding and format conversion
Solution Approach 1:
The patent uses watermarks as robust intermediary identifiers that are embedded in the content and can withstand transcoding and format conversion. These watermarks serve as reliable keys to retrieve the original metadata from a separate database, ensuring both interoperability and metadata preservation despite content transformation.
Solution Approach 2:
The patent creates a separate copy of the metadata in a database while embedding only essential identifiers in the content. This copying strategy ensures that the full metadata remains preserved in the database while the content carries sufficient information to retrieve it, maintaining reliability through redundancy.
Data Source
AI summary
Methods and devices are provided to identify live broadcast content that are multiple identities. One method includes is based on-the-fly modification of the broadcast content during broadcast and includes receiving the content that already includes pre-existing identification information that is embedded in the content, embedding a number of additional watermarks into the content as the content is being transmitted for live broadcast, where the plurality of additional watermarks includes a new identification information for the content. Just at the embedding of the additional watermark is commented, the pre-existing identification information, the new identification information and a temporal relationship between the pre-existing and additional watermarks are transmitted to a remote database, which can be used to enable reception of information based on the pre-existing identification.