NRT Service Manager for Broadcast Receiver Targeting
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Solution Overview
Problem
Legacy DTV receivers lack the necessary means to properly receive and process Non-Real-Time (NRT) services due to the absence of a processing unit for NRT services, leading to inefficiencies in receiving and processing NRT content combined with Real-Time (RT) services.
Innovation Solution
A broadcast receiver system that includes a baseband processor, a Program Specific Information/Program and System Information Protocol (PSI/PSIP) section parser, a Service Signaling Section Parser, a Service Manager, and an NRT service manager to identify and validate NRT services or content based on Receiver Targeting Descriptors, enabling the download of valid NRT services or content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If legacy DTV receivers are used without NRT processing capabilities, then device complexity is reduced, but the ability to receive and process NRT services is lost
Solution Approach 1:
The broadcast receiver is designed to handle both Real-Time (RT) and Non-Real-Time (NRT) services through a unified architecture. The service manager and NRT service manager coordinate to process different service types using common components like the baseband processor and PSI/PSIP section parser, allowing one device to serve multiple functions without requiring separate dedicated hardware for each service type.
Solution Approach 2:
The receiver architecture divides NRT service processing into distinct functional modules: a service manager for overall service control and an NRT service manager specifically for NRT content management. This segmentation allows the system to handle NRT services independently while maintaining compatibility with RT services, reducing the complexity impact of adding new functionality.
2Productivity
If NRT services are transmitted over broadcast medium, then bandwidth utilization is improved, but service reliability depends on receiver processing capabilities
Solution Approach 1:
The receiver performs preliminary validation of NRT services by checking the Receiver Targeting Descriptor before attempting to download or process the actual content. This preliminary action includes verifying the targeting_criterion_type_code and other validity criteria, ensuring that only compatible and intended services are processed, thereby maintaining service reliability while utilizing broadcast bandwidth efficiently.
Solution Approach 2:
The service manager receives feedback from the NRT service manager regarding the validity and compatibility of received NRT services. This feedback mechanism allows the system to adjust its processing behavior based on receiver capabilities and service requirements, ensuring reliable operation while maximizing bandwidth utilization for NRT content delivery.
Data Source
AI summary
A method of receiving a broadcast signal including a Non-Real-Time (NRT) Receiver Targeting service is disclosed herein. A method of receiving a broadcast signal including a Non-Real-Time (NRT) Receiver Targeting service, the method comprises receiving broadcast signal including first signaling information and second signaling information, identifying an NRT service based on the first signaling information, parsing a Receiver Targeting Descriptor from the second signaling information, determining validity of the NRT service or an NRT content based on a targeting_criterion_type_code included in the Receiver Targeting Descriptor, and downloading the NRT service or the NRT content when a receiver determines the NRT service or the NRT content to be valid.