Emergency Alert Signaling Syntax Elements
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Solution Overview
Problem
Current techniques for communicating emergency alert messages in digital media transmission standards, such as ATSC 3.0, are less than ideal, as they do not effectively signal information associated with emergency alert messages, leading to suboptimal presentation and retrieval of critical emergency content.
Innovation Solution
The proposed solution involves signaling syntax elements indicating the content type and description of media resources associated with emergency alert messages, allowing receiver devices to parse and retrieve relevant information effectively, and enabling more apparent presentation of emergency alerts to users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If current emergency alert message communication techniques are used, then transmission can occur, but the signaling of information associated with emergency alert messages is ineffective
Solution Approach 1:
The emergency alert message is segmented into distinct components: metadata elements (content type, description) and media resource identifiers. This segmentation allows the receiver to process and prioritize different information elements separately, improving overall information signaling effectiveness while maintaining communication reliability.
Solution Approach 2:
The patent signals information about media resources (content type, description) in advance before the actual emergency alert content is delivered. This preliminary action enables the receiver device to prepare appropriate presentation methods and ensures that critical information is available immediately when the alert is received, enhancing both information effectiveness and reliability.
2Measurement precision
If detailed syntax elements are signaled for emergency alert messages, then information retrieval is improved, but transmission data volume increases
Solution Approach 1:
The patent extracts only the most critical syntax elements (content type and description) from the full emergency alert message for signaling. By taking out only these essential elements, the system achieves precise content type identification without transmitting the entire message payload, thus improving measurement precision while controlling data volume.
Solution Approach 2:
The patent applies partial action by signaling a subset of possible syntax elements - specifically focusing on content type and description - rather than signaling all available emergency alert information. This partial signaling approach provides sufficient precision for content identification while minimizing the quantity of transmitted data.
Data Source
AI summary
A device may be configured to receive a low level signaling emergency alert message fragment from a broadcast stream. The device may parse syntax elements included in the emergency alert message fragment. The device may determine whether to retrieve a media resource associated with the emergency alert message based on the parsed syntax elements.