Erasing Device Tip Segmentation for Selective Image Deletion
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Solution Overview
Problem
Existing electronic chalkboard systems lack an efficient method to erase images selectively, requiring users to reset the entire display panel, which is inefficient for partial corrections or deletions.
Innovation Solution
An erasing device with a tip that generates an electromagnetic field, allowing the display apparatus to detect and control the area of image deletion based on the tip's position, adjusting the area of the image deletion region dynamically depending on which portions of the tip touch the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the entire display panel is reset to erase images, then all images are erased completely, but this is inefficient for selective erasure and wastes time
Solution Approach 1:
The erasing device divides the tip into multiple portions (first tip, second tip, etc.) with separate electromagnetic field generators. Each portion can be independently controlled to generate electromagnetic fields, allowing selective erasure of different regions. This segmentation enables precise control over which areas are erased without affecting the entire panel.
Solution Approach 2:
The patent implements local quality by making different portions of the tip have different erasing capabilities. When only the first tip touches the panel, a smaller region is erased; when both first and second tips touch, a larger region is erased. This allows the erasing effect to be locally adjusted based on the touching pattern, improving erasing efficiency for different scenarios.
2Adaptability or versatility
If a fixed area deletion region is used, then the erasure area is predetermined, but this lacks adaptability for different erasing needs
Solution Approach 1:
The deletion region area is made dynamic rather than fixed. The controller adjusts the area of the deletion region based on which tip portions are touching the panel. When the first tip touches, a first area is used; when the second tip touches, a second area is used. This dynamic adjustment provides adaptability without requiring complex manual configuration.
Solution Approach 2:
The system automatically determines the appropriate deletion region area based on the touching state of the tip portions. The controller detects which tips are touching and self-adjusts the erasure area accordingly, eliminating the need for manual user configuration and simplifying the user interface while maintaining high adaptability.
3Measurement precision
If multiple resonance coils are driven at different frequencies, then precise detection of tip portions is enabled, but this increases device complexity
Solution Approach 1:
The patent uses electromagnetic resonance (a form of vibration) in the resonance coils to detect tip contact. Each resonance coil is driven at its resonant frequency, and when a tip portion touches the panel, it modulates the electromagnetic field, allowing precise detection of which portions are touching. This vibration-based detection provides high measurement precision.
Solution Approach 2:
The resonance coils are driven at periodic resonant frequencies to detect tip contact. By using periodic electromagnetic excitation at known resonant frequencies, the system can precisely determine which tip portions are touching based on the detected electromagnetic field modulations, enabling accurate control of the erasure region.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and efficient erasure of specific regions on the display panel, allowing users to correct or delete parts of images without resetting the entire panel, enhancing usability and efficiency.
Implementation Method 1
a generator configured to generate an electromagnetic field so that the electromagnetic field is emitted from each of a plurality of portions of a tip of the housing
Implementation Method 2
the display apparatus detecting the electromagnetic field erases an image within a preset image deletion region
Data Source
AI summary
An erasing device to erase an image displayed on a display apparatus, the erasing device including: a housing; a generator to generate an electromagnetic field so that the electromagnetic field is emitted from each of a plurality of portions of a tip of the housing; and a controller to control the generator to generate the electromagnetic field when the tip touches a surface of the display apparatus so that the display apparatus detecting the electromagnetic field erases an image within a preset image deletion region with a predetermined area based on a position on the surface touched by the tip, wherein the generator adjusts output of the electromagnetic field from each portion of the tip based on whether each portion of the tip touches the surface so that the display apparatus adjusts the area of the image deletion region based on the portion of the tip touched by the surface.