Digital Broadcasting Receiver Image Scaling for Caption EPG Overlap
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Solution Overview
Problem
In digital broadcasting systems, the simultaneous display of caption information and Electronic Program Guide (EPG) information leads to visual collisions, making it difficult to provide caption information to users when channel changes occur.
Innovation Solution
An image processing apparatus and method in a digital broadcasting receiver that determines whether a changed channel includes caption information, scales down the digital broadcasting image data, and displays it on one side of the screen while showing EPG information on the other side, preventing visual collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If caption information and EPG information are simultaneously displayed, then information completeness is improved, but visual collision occurs making caption information difficult to provide
Solution Approach 1:
The display screen is segmented into multiple regions, with the broadcast image displayed in a first region and EPG information displayed in a second region. This spatial segmentation prevents visual collision between caption information and EPG information while allowing both to be displayed simultaneously, thus preserving caption information without harmful overlap.
2Shape
If broadcast image is displayed at full size, then image quality is improved, but no space remains for EPG information without causing visual collision
Solution Approach 1:
The solution transitions from a single-dimension display (full-screen image) to a two-dimension layout (multiple display regions). By utilizing the screen's spatial dimensions more effectively, the broadcast image is displayed in one region while EPG information occupies another region, allowing both to coexist without visual collision and preserving both image quality and information completeness.
Data Source
AI summary
In an image processing apparatus and method, a digital broadcasting receiver enables electronic program guide (EPG) information data and digital broadcasting image data not to visually overlap each other when digital broadcasting image data of a channel, including caption information, is processed. The image processor of the digital broadcasting receiver determines whether a changed channel includes caption information, and when the changed channel includes the caption information, the image processor scales down the digital broadcasting image data received from a digital broadcasting server, displays the scaled down digital broadcasting image data on one side of a screen, and displays EPG information data on another side of the screen.