Pressure-Responsive Eraser End for Electronic Ink Correction
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Solution Overview
Problem
Pen-based computing systems lack efficient methods for correcting and erasing electronic ink, as conventional editing tools like keyboards and mice are not always available or preferred, making it cumbersome to edit large amounts of data entered using an electronic pen.
Innovation Solution
An electronic pen with an eraser end that contacts the display surface, allowing users to erase electronic ink by applying pressure, with the eraser end capable of deleting pixels or entire strokes of ink, and the width of the erasure area increasing with pressure, enabling efficient correction of electronic ink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional editing tools like keyboards and mice are used to correct electronic ink, then editing capability is provided, but ease of operation deteriorates when these tools are not available or preferred
Solution Approach 1:
The electronic pen is designed to perform multiple functions: writing/inking and erasing/correction. By integrating both writing and erasing capabilities into a single device, the system eliminates the need for separate editing tools like keyboards or mice, providing universal functionality that works across all pen-based computing scenarios.
Solution Approach 2:
Instead of using separate tools for writing and correction, the invention inverts the approach by making the writing tool itself (the electronic pen) also perform the correction function. The eraser end of the pen provides correction capability, reversing the conventional model where a different device (keyboard/mouse) would be needed for editing.
2Productivity
If a fixed-size eraser is used, then device complexity is reduced, but productivity deteriorates when erasing large areas of electronic ink
Solution Approach 1:
The eraser width is made dynamic rather than fixed. The system adjusts the eraser width based on the pressure applied by the user - light pressure produces a narrow eraser for precise corrections, while heavy pressure produces a wide eraser for rapid removal of large areas of electronic ink. This dynamic adjustment dramatically improves erasing efficiency without requiring complex mechanical components.
Solution Approach 2:
The invention changes the parameter of eraser width based on pressure input. By monitoring the pressure applied to the display surface and dynamically adjusting the eraser width parameter accordingly, the system provides adaptive erasing capability that matches user intent and improves productivity across different correction scenarios.
3Ease of operation
If pressure-sensitive erasing is implemented, then ease of operation improves for selective erasure, but device complexity increases due to pressure sensing requirements
Solution Approach 1:
The display surface itself serves as the pressure sensing mechanism. The display is capable of detecting pressure applied to it without requiring separate sensors in the pen. This self-service approach allows the system to determine the pressure level and adjust eraser width accordingly, providing precise control while minimizing additional device complexity.
Solution Approach 2:
The display surface acts as an intermediary between the user's pressure input and the erasing operation. Instead of requiring complex sensors in the pen, the display mediates the interaction by detecting pressure and translating it into appropriate eraser width settings, simplifying the overall system architecture.
Data Source
AI summary
A method of adjusting the size of an area to be deleted in a pen-based computing system is provided. An electronic pen may include an eraser end. The eraser end may be used to contact the display surface of a computer system. Application of pressure to the display through the eraser end of the electronic pen may result in the deletion of the text indicated by the position of the electronic pen. As additional pressure is applied, the size of the area to be deleted increases. The invention provided may be used with both pixel type and stroke type erasing systems and provides an efficient and accurate method of deleting electronic ink.