Display Device Thumbnail Synchronization via Priority Tuning
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Solution Overview
Problem
Conventional television receivers face usability issues due to the time required to obtain thumbnails for counterprograms from broadcast waves, which can take several minutes, and the lack of synchronization between obtained thumbnails and current broadcasted content, leading to delayed and inaccurate counterprogram listings.
Innovation Solution
A display device with first and second receiving means to prioritize receiving broadcast waves carrying content near the currently viewed program, allowing for immediate display of thumbnails and ensuring content synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If thumbnails are obtained from all broadcast waves sequentially, then complete counterprogram listing with thumbnails is achieved, but display time is delayed by several minutes
Solution Approach 1:
The system performs preliminary actions by pre-obtaining and caching thumbnails for frequently accessed or currently viewed programs before they are actually needed for display. When a user views a program, its thumbnail is already available, eliminating wait time. The system also pre-loads thumbnails for programs that are likely to be selected based on current viewing context.
Solution Approach 2:
The counterprogram listing is segmented into priority levels: currently viewed program (highest priority), programs in same time slot (medium priority), and other programs (lower priority). Thumbnails are obtained and displayed in this priority order, ensuring that the most relevant thumbnails appear immediately while less critical ones are loaded progressively.
2Loss of information
If thumbnails are obtained sequentially from multiple broadcast waves, then all counterprogram thumbnails are available, but synchronization with current broadcast content is lost
Solution Approach 1:
The system continuously monitors the currently broadcast program information and compares it with the obtained thumbnails. When a program ends and another begins, the system receives feedback about the program change and immediately updates the thumbnail display to match the current broadcast content, ensuring synchronization between thumbnails and actual programming.
Solution Approach 2:
The system obtains thumbnails in advance for programs that are scheduled to broadcast, storing them with their corresponding program metadata including start and end times. This preliminary preparation ensures that when a program transitions occurs, the correct thumbnail is already available and can be displayed immediately without synchronization delays.
3Loss of information
If all broadcast waves are received simultaneously, then all counterprogram thumbnails can be obtained, but device complexity and processing load increase
Solution Approach 1:
The system applies different receiving strategies to different broadcast waves based on their priority. High-priority channels (currently viewed, same time slot programs) are received with higher bandwidth and processing priority, while lower-priority channels use standard receiving parameters. This localized optimization reduces overall system complexity while maintaining thumbnail availability.
Solution Approach 2:
The system performs partial action by initially obtaining thumbnails only for the currently viewed program and a limited number of adjacent time slot programs, rather than all possible counterprograms. Additional thumbnails are obtained progressively as users navigate through the listing, reducing initial processing load while still providing useful functionality.
Data Source
AI summary
The present invention includes (i) a tuner (21b) for preferentially receiving broadcast waves (2b) for carrying television programs (3b) list-displayed near a television program (3a) carried by a broadcast wave (2a) rather than a broadcast wave for carrying television programs which are list-displayed away from the television program (3a) and (ii) an information obtaining section (11) for obtaining thumbnails (5a) representing the television programs (3b) from the broadcast waves (2b) received by the tuner (21b).