Emergency Alert Table Parsing for Legacy Broadcast Receivers
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Solution Overview
Problem
Current mobile broadcasting systems lack the capability to provide efficient emergency alert services, particularly to old-fashioned broadcast receivers that do not support Non Real Time (NRT) or Electronic Service Guide (ESG) services, making it difficult to disseminate disaster information effectively across varying locations.
Innovation Solution
The method involves receiving and parsing a broadcast signal containing an emergency alert table with an emergency alert message and a content transfer structure descriptor, which includes IP address information for transferring the alert content, allowing for decoding and reproduction of the alert content using IP datagrams, even on receivers that do not support ESG/NRT services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If emergency alert service is provided through NRT broadcast service and ESG service, then the service can be provided to advanced receivers, but old-fashioned receivers that do not support these services cannot receive the emergency alert information
Solution Approach 1:
The emergency alert service is segmented into two parts: essential alert information that can be received by all receivers through basic broadcast services, and additional interactive content that is transmitted separately through NRT/ESG services for advanced receivers. This segmentation allows old-fashioned receivers to receive critical information while advanced receivers can access enhanced content.
Solution Approach 2:
The patent introduces an intermediary mechanism that translates and adapts emergency alert information into formats compatible with different receiver types. The system acts as a mediator between the broadcast system and various receiver capabilities, ensuring information delivery to all receiver types through appropriate adaptation layers.
2Adaptability or versatility
If the broadcast system uses advanced services like NRT and ESG for emergency alert delivery, then interactive content can be provided, but the complexity of the system increases and excludes old-fashioned receivers
Solution Approach 1:
The broadcast system is designed with multi-functionality to serve both advanced and old-fashioned receivers simultaneously. The same broadcast infrastructure delivers basic emergency alerts to all receivers while providing enhanced interactive services to advanced receivers, making the system universally applicable across different receiver capabilities.
Solution Approach 2:
The system dynamically adapts its service delivery based on receiver capabilities. Advanced receivers that support NRT and ESG services receive enhanced interactive emergency alert content, while old-fashioned receivers automatically receive simplified alert information through basic broadcast services, with the system adjusting its output dynamically according to the receiving device's capabilities.
3Loss of information
If emergency alert information is transmitted only through traditional broadcast channels, then all receivers can receive it, but interactive content and additional information cannot be effectively delivered
Solution Approach 1:
The patent adds another dimension to emergency alert delivery by introducing NRT and ESG service layers on top of traditional broadcast channels. This dimensional expansion allows the system to deliver both basic alert information through traditional channels and additional interactive content through the new dimension provided by NRT/ESG services, enriching the overall information delivery without abandoning legacy channels.
Data Source
AI summary
The present invention relates to a method for receiving urgent alarm contents through a broadcast system. According to an embodiment of the present invention, a method for receiving urgent alarm contents through a broadcast system includes the steps of: receiving a broadcast signal; parsing an urgent alarm table contained in the broadcast signal, the urgent alarm table containing an urgent alarm message and an urgent alarm contents transmission structure descriptor for signaling the information of the urgent alarm contents concerning the urgent alarm message, and the urgent alarm contents transmission structure descriptor containing the IP address of an IP datagram for transmitting the urgent alarm contents; receiving the IP datagram of the IP address; and decoding the IP datagram so as to reproduce the urgent alarm contents.