Watermark Payload URL Construction for Metadata Retrieval
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Solution Overview
Problem
Existing metadata incorporation techniques in multimedia content are unreliable, often leading to loss of metadata during format transformations, transcoding, and transmission, especially in scenarios involving set-top boxes and different communication protocols, which hampers interactive services and content management.
Innovation Solution
The use of imperceptible watermarks embedded in audio and video content that are immune to processing operations and channel impairments, allowing for automatic content recognition and metadata retrieval, even in scenarios where metadata is lost, using a standardized watermark structure with Domain IDs and Sequence IDs for decentralized management and interoperability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metadata is interleaved, prepended or appended to multimedia content, then metadata can enable content management and interactive services, but metadata occupies additional bandwidth and can be lost during format transformation, transcoding, and transmission
Solution Approach 1:
The patent embeds metadata directly within the multimedia content by replacing selected audio samples with metadata values, creating a unified structure where metadata and content coexist. This merging eliminates the need for separate metadata transmission channels and protects metadata from loss during transcoding and format transformations, as the metadata becomes an intrinsic part of the content stream.
Solution Approach 2:
The patent uses audio samples as an intermediary carrier for metadata transmission. By embedding metadata within the audio portion of multimedia content, the system leverages the existing audio transmission infrastructure to carry metadata reliably through various processing stages, including transcoding and format conversions, without requiring separate dedicated metadata channels.
2Adaptability or versatility
If metadata is transmitted through communication protocols and interfaces, then interactive services can be enabled, but metadata can be lost during transmission through set-top boxes and different communication protocols
Solution Approach 1:
The patent merges metadata with the audio content stream by embedding it within selected audio samples. This unified structure ensures that metadata travels with the content through all communication protocols and set-top box processing stages, maintaining reliability across different transmission interfaces and enabling interactive services without metadata loss.
Solution Approach 2:
The patent makes the audio samples serve dual functions: carrying both audio information and embedded metadata. This multi-functionality allows the same transmission channel and processing pipeline to handle both content and metadata reliably, eliminating the need for separate metadata transmission paths that would be vulnerable to protocol-specific losses.
3Loss of information
If watermark detection is performed on received content, then automatic content recognition and metadata retrieval can be achieved, but additional processing steps are required
Solution Approach 1:
The patent implements self-service by embedding metadata directly within the audio content in a structured format that can be automatically detected and extracted. The watermark detection mechanism scans the audio samples, identifies embedded metadata patterns, and retrieves information without requiring external metadata sources or complex manual intervention, thus preserving metadata while maintaining manageable processing requirements.
Data Source
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AI summary
Methods and devices are provided to obtain metadata associated with multimedia content. One method includes performing watermark detection on a content that is received at a receiver device to detect one or more watermarks. At least one of the detected watermark includes a payload with a server code and an interval code. The method includes forming a uniform resource locator (URL) based on the watermark payload. The URL includes a first section with server domain name the includes at least a portion of the server code. The URL also includes a second section that includes at least a portion of the interval code. Upon transmission of a request based on the URL using a hypertext transfer protocol (HTTP) for delivery to a metadata server, a response is received that includes metadata associated with the content.