Digital TV EPG Image Capture for Program Information
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Solution Overview
Problem
Users find it difficult to read and understand program information displayed on digital broadcasting receiving apparatuses, as the information is typically presented in text format.
Innovation Solution
A digital broadcasting receiving apparatus with multiple tuners and signal processors captures and stores image information from multiple channels at predetermined intervals, allowing users to view detailed program information, including channel information, titles, start and end times, and stored times, through an Electronic Program Guide (EPG) window, using user input to select and display this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If program information is displayed in text format, then the display structure is simple, but users find it difficult to read and understand program information
Solution Approach 1:
The patent creates a visual copy of the actual broadcast content by capturing still images from the broadcast signal at predetermined time intervals. These captured images are stored and displayed in the EPG alongside program information, providing users with a visual representation of what was actually broadcast rather than relying solely on text descriptions.
Solution Approach 2:
The patent transitions from one-dimensional text-based program information to two-dimensional visual information by incorporating captured still images into the EPG display. This dimensional change allows users to perceive program content more effectively through visual recognition rather than reading text, thereby improving ease of understanding.
2Ease of operation
If image information is captured and stored for all programs, then users can understand program details better, but the storage requirement and processing time increase
Solution Approach 1:
Instead of capturing images continuously throughout entire programs, the system captures still images at predetermined time intervals (e.g., every 5 or 10 minutes). This partial action approach provides sufficient visual representation of program content while significantly reducing the total amount of image data that needs to be stored and processed.
Solution Approach 2:
The patent implements periodic capture of image information at predetermined time intervals throughout the broadcast. This periodic action ensures that users receive visual summaries of program content at regular intervals, maintaining their understanding of the broadcast while avoiding the need to store every frame of the entire program.
3Measurement precision
If the system captures image information at frequent intervals, then the visual representation of programs is more accurate, but the processing load and time consumption increase
Solution Approach 1:
The system uses partial action by capturing images only at predetermined time intervals rather than continuously. This approach provides sufficient accuracy in representing program content through strategic sampling while maintaining high processing speed and low time consumption compared to continuous capture methods.
Data Source
AI summary
A digital broadcasting receiving apparatus which receives broadcasting signals corresponding to a plurality of channels, the digital broadcasting receiving apparatus including: a first tuner that tunes one of the broadcasting signals; and a controller that controls the first tuner to successively tune the broadcasting signals for each channel, captures image information for a program of a tuned broadcasting signal at a predetermined time interval, and storing detailed program information comprising the captured image information.