Transparent Handwriting Input Device with Coating Detection
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Solution Overview
Problem
Handwriting input devices face challenges in use in dark environments, risk of complete data loss leading to input information loss, and require special instruments for erasing written or drawn figures.
Innovation Solution
A handwriting input device equipped with a transparent or translucent object coated with a detection system for tracking the position of a coating material, which allows visual changes and prevents data loss by storing information physically, enabling erasure without special instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a display-type handwriting input device is used, then visibility is improved in dark environments, but the risk of complete data loss increases
Solution Approach 1:
The patent creates a physical copy of the handwriting input information by depositing coating material on the display surface. This physical record serves as a backup that prevents complete data loss while the display provides visual output. The coating material deposition process creates a tangible trace of the input that persists independently of the electronic display state.
Solution Approach 2:
The patent utilizes color or optical property changes of the coating material to indicate the position and state of handwriting input. The coating material's optical characteristics provide visual feedback that enhances visibility in dark environments while simultaneously creating a physical record of the input for data preservation.
2Measurement precision
If a display-type handwriting input device is used, then visual feedback is improved, but the need for special instruments for erasing increases
Solution Approach 1:
The patent enables the display surface itself to serve dual functions: as the active display area and as the erasable surface. The coating material deposited during handwriting input can be physically removed using general objects like tissue paper or fingers, eliminating the need for special erasing instruments. The display surface becomes self-erasable through simple physical contact.
3Measurement precision
If a board surface moving type system is used, then reading capability is improved, but complexity of the system increases
Solution Approach 1:
The patent extracts the reading function from a complex moving board system and integrates it directly into the display surface. By depositing coating material on the display and using the display's own sensors to detect the coating position, the system eliminates the need for separate rolling mechanisms, motors, and CCD sensors, thereby reducing overall system complexity while maintaining reading capability.
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 use in dark environments, prevents data loss by physically storing input information, and allows erasure using general objects like tissue paper or fingers.
Implementation Method 1
a detection means configured to detect a position in which a coating material attaches on the object to be coated
Implementation Method 2
a detection means configured to detect a position in which a coating material attaches on the object to be coated
Implementation Method 3
a display means configured to cause a visual change in accordance with the position where attachment of the coating material is detected by the detection means
Data Source
AI summary
This handwriting input device is equipped with an object to be coated 101, a detection means 102, and a display means 103. The object to be coated 101 is transparent or translucent. When a letter or a figure is written or drawn with a coating material, the detection means 102 detects a position in which the coating material attaches on the object to be coated 101. The display means 103 causes a visual change in accordance with the position in which attachment of the coating material is detected by the detection means 102, thereby displaying the letter or figure written or drawn with the coating material.