Display Device Image Enlargement via Tap Detection and Block Segmentation
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Solution Overview
Problem
Current methods for enlarging images on tablet terminals, such as the pinch operation, result in screen flickering and poor operability due to the need for multiple steps and visual obstruction, making it difficult to accurately enlarge figures or photographs within images.
Innovation Solution
A display device and data processing system that associates page image data with figure or photograph information, including area data, allowing for precise identification and enlargement of specific images by determining the tapped area and using this information to display the enlarged image without redrawing the entire screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pinch operation is used to enlarge image on tablet terminal, then image enlargement is achieved, but screen flickers and becomes difficult to see
Solution Approach 1:
The patent divides the image into multiple blocks and processes only the specific block containing the figure to be enlarged, rather than redrawing the entire screen. This segmentation approach eliminates screen flicker while maintaining accurate image enlargement of the target figure.
Solution Approach 2:
The patent applies different processing quality to different regions: the target figure block is enlarged with high quality while other blocks remain unchanged. This local quality approach prevents screen-wide flicker and maintains visual stability during enlargement operations.
2Measurement precision
If pinch operation is used for image enlargement, then image can be enlarged, but multiple operation steps are required leading to poor operability
Solution Approach 1:
The patent pre-divides the image into blocks and pre-identifies figure regions before user interaction. When the user taps the screen, the system immediately identifies which pre-defined figure block is selected and enlarges it directly, eliminating the need for multiple pinch-to-zoom steps and improving operational simplicity.
3Ease of operation
If user moves hand above screen to perform operation, then operation can be executed, but hand covers the screen causing visual obstruction
Solution Approach 1:
The patent replaces the mechanical pinch gesture requiring hand movement over the screen with a simple tap operation detected through the touch panel. This substitution allows users to operate without blocking the screen view, maintaining both operational capability and visual clarity.
4Measurement precision
If entire screen is redrawn during image enlargement, then image can be enlarged, but processing time increases and operability decreases
Solution Approach 1:
The patent segments the display into multiple blocks and redraws only the specific block containing the enlarged figure rather than the entire screen. This selective redrawing significantly reduces processing time while maintaining accurate image enlargement of the target figure.
Solution Approach 2:
The patent applies full processing quality only to the local block containing the target figure, while other blocks are updated minimally or not at all. This local quality approach reduces overall processing time while preserving the accuracy of the enlarged figure display.
Data Source
AI summary
A display device, including: a storage unit in which page image data including a figure or a photograph and figure photo information are stored so as to be associated with each other for each page, the figure photo information corresponding to a figure or a photograph included in a page, being information for individually displaying the figure or the photograph and including area information which indicates an area occupied by the figure or the photograph in page image data corresponding to the page; a display unit; an operation unit; an identification unit; and a display control unit.