Set-Top Box Service Group Discovery via Location Identifier
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Solution Overview
Problem
Existing switched digital video systems struggle to assign service groups to set-top boxes without visible switched edge QAM devices, limiting the ability to utilize bandwidth-efficient digital video delivery.
Innovation Solution
A broadcast system and method that includes a video content network connecting a video server, discovery server, switched digital video service, and set-top box, where the set-top box receives an assigned location identifier and mapping from the discovery server to determine its service group, allowing communication with the switched digital video service and manager.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switched digital video systems use switched edge QAM devices to determine service groups, then service group assignment works reliably, but the system cannot assign service groups to set-top boxes without visible switched edge QAM devices
Solution Approach 1:
The patent introduces a location identifier as an intermediary element that mediates between the set-top box and the service group assignment mechanism. Instead of directly relying on switched edge QAM devices for service group determination, the system uses location identifiers assigned to set-top boxes and mapped to service groups through a mapping table, enabling service group assignment without requiring visible switched edge QAM devices.
Solution Approach 2:
The patent extracts the service group determination logic from the switched edge QAM devices and relocates it to the set-top box itself. By implementing the service group discovery process locally at the set-top box using the location identifier and mapping table, the system eliminates the dependency on switched edge QAM devices being visible to the in-band tuner.
2Ease of manufacture
If legacy broadcast systems send all programs to all set-top boxes, then service delivery is simple, but bandwidth utilization is inefficient
Solution Approach 1:
The patent implements a dynamic service delivery mechanism where the set-top box actively discovers its service group and requests only the programs relevant to its location. This dynamic approach allows the system to adapt content delivery to specific service groups, improving bandwidth utilization while maintaining operational simplicity through automated discovery processes.
3Adaptability or versatility
If set-top boxes autonomously discover service groups without switched edge QAM devices, then system adaptability improves, but the discovery process complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-assigning location identifiers to set-top boxes and pre-establishing the mapping between location identifiers and service groups in a mapping table. This preliminary configuration simplifies the autonomous discovery process, as the set-top box only needs to retrieve its location identifier and query the mapping table rather than implementing complex discovery algorithms.
Data Source
AI summary
A broadcast system and method that includes a video content network that connects a video server, a discovery server, a switched digital video service, a switched video manager, and a set-top box. The set-top box receives and stores an assigned location identifier, and receives a mapping from the discovery server, where the mapping includes records, each record associating a location identifier and a service group. The set-top box matches the assigned location identifier to the mapping to determine an assigned service group for the set-top box. The set-top box receives an address from the discovery server that identifies the switched video manager that is associated with the assigned service group. The set-top box operates in the broadcast system by communicating with the switched digital video service, and the switched video manager.