DVB Service Information Table Consolidation for Receiver Workload Reduction
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Solution Overview
Problem
In broadcasting networks, receivers face processing overload when handling diverse and complex service information from both DVB and IP networks, leading to inefficient data processing and potential service disruptions.
Innovation Solution
A method is introduced where a managing center transmits structured service information tables via the DVB network, incorporating IP network data, allowing receivers to process and display all available services without analyzing IP network streams, using high-level tables like NIT and SDT to reduce processing burdens and enable seamless service switching between DVB and IP networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If receivers analyze and process service information from both DVB and IP network streams independently, then service information completeness is improved, but receiver processing complexity and workload increase
Solution Approach 1:
The patent merges service information from DVB and IP networks by embedding IP network service information into DVB network service information tables (NIT, SDT, EIT). This allows receivers to obtain complete service information from a single DVB stream without independently processing IP network streams, thus reducing receiver processing complexity while maintaining information completeness
Solution Approach 2:
The DVB service information tables act as an intermediary that consolidates and translates service information from both DVB and IP networks into a unified format. The managing center performs the consolidation and embedding operations, serving as a mediator that prepares integrated service information for distribution through the DVB network, thereby shielding receivers from the complexity of handling multiple network protocols
2Loss of information
If receivers process diverse service information from multiple network protocols, then service availability information is improved, but processing time and efficiency deteriorate
Solution Approach 1:
The managing center performs preliminary consolidation and embedding of service information from DVB and IP networks into unified DVB service information tables before distribution. This preliminary action ensures that receivers receive pre-processed, integrated service information, eliminating the need for receivers to perform time-consuming independent analysis of multiple network protocols and thereby improving processing efficiency
3Measurement precision
If receivers independently detect and analyze IP network streams for service information, then service discovery accuracy is improved, but receiver workload and potential service disruptions increase
Solution Approach 1:
The DVB service information tables serve as an intermediary that provides accurate service discovery information from both DVB and IP networks in a unified format. This approach maintains service discovery accuracy while improving reliability, as receivers depend on a single DVB information source rather than multiple independent network streams, reducing the risk of service disruptions
Data Source
AI summary
A method for transmitting services information in a broadcasting network by at least one managing center towards a plurality of receivers includes exploring streams broadcasted by a DVB network and streams broadcasted by an IP network and extracting services information from these streams, completing an information table, situated at the highest level in a hierarchy of services information tables, included in the service information DVB-SI transmitted by the DVB network by services information related to the IP network, and transmitting the completed information table in the streams broadcasted by the DVB network towards the receivers having two switchable receiving modules, connected respectively to a DVB and an IP services broadcasting network. The receivers are able to activate the reception of digital data of a service, equivalent to the service currently received, with a second receiving module when receiving conditions of a first receiving module are degraded.