Set-Top Box Software Component Selection via Configuration Server
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Solution Overview
Problem
Current digital TV set-top boxes have limited flexibility in software selection, leading to obsolescence due to newer software versions that require newer APIs, and they lack the ability to temporarily load diagnostic applications for troubleshooting, while also being constrained by the size of the Extended Application Information Table (XAIT) in the OpenCable Application Platform (OCAP) specification.
Innovation Solution
A method and system that allow users to select and load interactive video software components on a television set-top box over a video content network, bypassing the XAIT limitations by using a configuration server and set-top box processor to facilitate user selection and delivery of software components, enabling parental controls and diagnostic applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If users are allowed to select and load multiple software components, then software versatility and device lifespan are improved, but device complexity and memory requirements increase
Solution Approach 1:
The patent divides the software system into separate loadable components (application binaries, configuration files, diagnostic tools) that can be independently selected and loaded into memory, rather than requiring a fixed monolithic software image. This segmentation allows users to choose only the software components they need, reducing overall system complexity while maintaining versatility.
Solution Approach 2:
The system implements dynamic software loading where the set-top box can load, unload, and replace software components during operation. The configuration server enables dynamic updates and the memory management system handles dynamic allocation of loaded components, making the system adaptable rather than static.
2Quantity of substance
If the XAIT table size is increased to accommodate more applications, then software selection capacity is improved, but the OCAP specification compliance and system stability are compromised
Solution Approach 1:
The patent moves the software component repository from the constrained XAIT table structure to a network-based configuration server. Instead of storing application information in a single-dimensional table with limited capacity, the system uses a multi-dimensional approach with network storage, allowing virtually unlimited software components to be cataloged and delivered without compromising the core OCAP specification compliance.
Solution Approach 2:
The configuration server acts as an intermediary between the limited XAIT table and the user's software selection needs. The XAIT table maintains its specification-compliant size for stability, while the configuration server provides the extended software catalog and handles delivery of additional components, mediating between the constraint and the requirement.
3Ease of operation
If diagnostic applications are permanently loaded, then troubleshooting capability is improved, but memory consumption and device resource usage increase
Solution Approach 1:
Diagnostic applications are implemented as dynamically loadable components rather than permanently installed software. The system can load diagnostic tools into memory when troubleshooting is needed and unload them when not in use, providing full troubleshooting capability on demand while minimizing permanent memory consumption for these resource-intensive applications.
Solution Approach 2:
The system implements a discard and recover mechanism for diagnostic applications. These applications are loaded into memory temporarily for troubleshooting operations, then discarded when complete. The memory resources are recovered and made available for other uses, allowing comprehensive diagnostic capability without permanent memory allocation.
Data Source
AI summary
A method for allowing user selection of interactive video software components in a television STB operatively coupled to a video content network includes the steps of: affording the user a selection of interactive video software components to run on the set-top box; and loading selected interactive video software components onto the set-top box. The selected interactive video software components are delivered from a remote node over the video content network to which the STB is coupled.