Display Apparatus Channel Map Synchronization via Screen Text Extraction
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Solution Overview
Problem
The recommendation channel map received from a server device may differ from the current channel map on a set-top box (STB), leading to incorrect broadcast selection when the user's preferences are not aligned with the server-provided recommendations, causing unintended broadcasts to be displayed.
Innovation Solution
A display apparatus capable of recognizing and comparing channel information displayed on the screen, allowing for real-time updating of the channel map by extracting text-based channel information and determining its brightness relative to the background, thereby ensuring accurate channel selection and map synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a server device transmits a recommendation channel map to a TV receiver, then the user can view recommended broadcasts, but the channel map may differ from the current viewing environment causing incorrect broadcast selection
Solution Approach 1:
The system captures the currently displayed broadcast information from the screen, extracts channel identification data, and uses this feedback to correct the recommendation channel map. This closed-loop feedback mechanism ensures the channel map reflects the actual viewing environment, resolving the contradiction between adaptability and reliability.
Solution Approach 2:
The TV receiver automatically captures and extracts channel information from its own display output without requiring external intervention. The system self-corrects the channel map by comparing extracted data with received recommendations, enabling autonomous adaptation to the viewing environment.
2Adaptability or versatility
If the STB channel map changes or user preferences differ from server recommendations, then user customization is enabled, but the server-provided channel map becomes outdated and inaccurate
Solution Approach 1:
The system continuously monitors the actual channel being displayed and extracts channel identification data in real-time. This feedback loop detects discrepancies between the recommendation channel map and actual broadcasting, automatically updating the channel map to maintain synchronization and prevent information loss.
Solution Approach 2:
The system proactively captures and extracts channel information before discrepancies accumulate. By continuously monitoring and updating the channel map in advance, the system prevents outdated information from causing incorrect broadcast selection.
3Measurement precision
If text-based channel information is extracted from the displayed screen, then real-time channel recognition is achieved, but image processing complexity increases
Solution Approach 1:
The system extracts only the specific channel identification text from the displayed screen rather than processing the entire image. By focusing extraction on relevant textual elements containing channel information, the system achieves accurate recognition while minimizing processing complexity.
Solution Approach 2:
The image processing is applied locally to specific regions of the screen where channel information is displayed, rather than processing the entire display output. This localized approach maintains high recognition accuracy for channel data while reducing overall processing complexity.
Data Source
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AI summary
A display apparatus includes a storage configured to store a recommendation channel map including a plurality of channel numbers and channel information mapped to channel numbers; an input unit for inputting a user command and selecting a channel; a contents receiver configured to receive contents through a channel corresponding to the user command; a display configured to display the contents; and a controller configured to compare the stored channel information mapped to the selected channel number in the recommendation channel map and channel information of the received contents, and to update the recommendation channel map according to a result of comparison.