Portable Device Image Overlaying for Multi-Tasking Readability
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Solution Overview
Problem
Conventional portable devices cannot simultaneously display broadcast images and application images on their screens, limiting multi-tasking capabilities.
Innovation Solution
An apparatus and method for overlaying broadcast and application images using a broadcast image layer generator, an application image layer generator, and an overlay processor, which adjust translucency and color information to combine the images, allowing them to be displayed simultaneously on a screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the T-DMB image is displayed on the screen, then the broadcast quality is maintained, but the application image cannot be displayed simultaneously
Solution Approach 1:
The screen is divided into multiple layers: a broadcast image layer and an application image layer. The overlay processor segments the display into these separate layers, allowing independent processing and rendering of each layer while maintaining simultaneous display capability.
Solution Approach 2:
The patent introduces a new dimension of display by overlaying images at different transparency levels rather than switching between single images. This dimensional approach allows both broadcast and application images to coexist in the same spatial plane with different opacity values.
2Adaptability or versatility
If the application image is displayed over the broadcast image, then multi-tasking is enabled, but the readability of text in the application image deteriorates
Solution Approach 1:
The overlay processor applies different transparency settings to different regions of the application image. Text regions are assigned higher transparency values to ensure readability, while non-text regions use lower transparency to maintain visibility. This local quality adjustment preserves text readability while enabling simultaneous display.
Solution Approach 2:
The system adjusts color properties of the application image when overlaid on the broadcast image. By modifying color intensity and contrast in text areas, the patent ensures that text remains readable against the varying backgrounds of the broadcast content.
3Loss of information
If the transparency of the application image is increased, then text readability improves, but the visibility of the broadcast image deteriorates
Solution Approach 1:
The transparency of the application image is made dynamic rather than static. The overlay processor continuously adjusts the transparency level based on the type of content being displayed (text vs. image), user interactions, and the current state of the broadcast image. This dynamic adjustment optimizes both text readability and broadcast visibility in real-time.
Data Source
AI summary
An apparatus for overlaying images includes a broadcast image layer generator, an application image layer generator, and an overlay processor. The broadcast image layer generator generates a broadcast image layer based on a received broadcast signal. The application image layer generator generates an application image layer based on an application image. The overlay processor generates an overlay image obtained by overlaying the broadcast image layer with the application image layer, so that a broadcast image corresponding to the broadcast image layer and an application image corresponding to the application image layer may be displayed simultaneously on a screen. The broadcast image and the application image may be displayed simultaneously on a screen, and visibility and readability of a text in the application image may be enhanced based on the user's preference and the user's recognition ability when the portable device performs multi-tasking in which multiple programs are simultaneously executed.