Token-Based Metadata Search for Broadcast Reception Devices
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Solution Overview
Problem
Current systems lack efficient management and search capabilities for service worker frameworks in broadcast content reception devices, particularly in delivering and managing application parts and metadata via broadcast waves and networks.
Innovation Solution
A reception device and transmission device system that utilizes a token-based approach for efficient metadata search, including a service worker search scope token and cache scope token, to facilitate the acquisition and management of scheduled data, enabling effective use of service workers in clients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional metadata search methods are used in broadcast reception devices, then complete metadata can be searched, but search efficiency is low and time-consuming
Solution Approach 1:
The patent segments metadata into two categories: essential metadata (required for basic functionality) and non-essential metadata (optional information). By delivering only essential metadata through broadcast waves and making non-essential metadata available on-demand via network, the system reduces the amount of data that must be searched through conventional slow methods, thereby improving search efficiency and reducing time loss.
Solution Approach 2:
The patent introduces a new dimensional approach to metadata delivery by combining broadcast wave transmission with network-based on-demand delivery. This dual-channel approach creates an additional dimension in the metadata search space, allowing the reception device to access critical metadata quickly via broadcast while supplementing with detailed metadata from the network as needed, thus resolving the efficiency-time contradiction.
2Loss of information
If all metadata is delivered via broadcast wave, then complete information is available, but data transmission volume and bandwidth requirements increase
Solution Approach 1:
The patent segments metadata into essential and non-essential categories, delivering only essential metadata via broadcast waves. This segmentation ensures that the broadcast channel carries only the minimum necessary data volume while maintaining information completeness for basic operations, with non-essential metadata available on-demand through the network.
Solution Approach 2:
The patent creates a universal metadata delivery system that combines broadcast wave transmission with network-based on-demand delivery. This multi-functional approach allows the system to serve both bandwidth-constrained scenarios (using broadcast) and information-complete scenarios (using network supplementation), resolving the contradiction between information completeness and data volume.
3Adaptability or versatility
If service worker framework is implemented in broadcast reception devices, then application management capability is improved, but system complexity increases
Solution Approach 1:
The patent segments the service worker framework implementation into modular components that work specifically with the dual-channel metadata delivery system. By creating specialized service workers for broadcast metadata processing and network metadata supplementation, the system improves application management capability through targeted functionality while keeping overall complexity manageable through clear separation of concerns.
Solution Approach 2:
The patent introduces service workers as intermediary components that mediate between the dual-channel metadata delivery system and applications. These service workers automatically manage metadata acquisition, caching, and supplementation without requiring complex application-level logic, thus improving adaptability while managing system complexity through the intermediary layer.
Data Source
AI summary
Provided are a device and a method which are capable of realizing an efficient search of metadata such as access information corresponding to acquisition-scheduled data in a reception device. A reception device receives a token which is auxiliary search information for efficiently searching for metadata such as access information related to acquisition-scheduled data of the reception device and performs a search process using the token. The token includes a service worker (SW) search scope token capable of limiting a search scope of access information corresponding to data serving as a management target of a specific service worker (SW) which is a data management program and a service worker (SW) cache scope token indicating that access information corresponding to data serving as a management target of a service worker (SW) is collectively recorded.