Slant-Moving Input Device for Angled Display Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electronic pens with pressure switches fail to detect contact with a display when used at an angle, leading to operational failures due to misalignment between the pen's movement direction and pressing direction.
Innovation Solution
The input device features a front-end and rear-end moveable object that can move reciprocally along the axis direction and also in a direction slanted from it, with a concave compartment design allowing smooth movement and contact detection, even when the device is used at an angle, utilizing a transmitter to send contact-detection signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic pen uses a pressure switch that requires alignment between pressing direction and movement direction, then the contact detection can be achieved under normal conditions, but the contact detection fails when the pen is used at a slant angle
Solution Approach 1:
The patent replaces the fixed pressure switch mechanism with a movable object that can dynamically adjust its movement direction. The movable object is constrained only by the concave compartment's inner wall, allowing it to move in any direction (axial or slanted) to contact the display, thereby adapting to different usage angles while maintaining reliable contact detection
Solution Approach 2:
The patent transitions from a one-dimensional movement constraint (axial direction only) to multi-dimensional movement freedom. The movable object can now move in multiple directions including axial and slanted directions, expanding the operational dimensions and enabling contact detection at various angles
2Device complexity
If the moveable object is constrained to move only along the axis direction, then the structure can be simple, but the contact detection fails when pressed in a slanted direction
Solution Approach 1:
The patent segments the movement constraint from the detection function. Instead of constraining movement to a single axis, the concave compartment is designed with an inner wall that allows segmented movement paths - the movable object can move axially or slantedly depending on the pressing direction, while still triggering the detection mechanism
Solution Approach 2:
The movable object serves multiple functions: it can move in axial direction for normal writing, move in slanted direction for angled writing, and always trigger contact detection. This multi-functional design eliminates the need for separate mechanisms for different writing angles
Data Source
AI summary
An input device includes a casing having a concave compartment having an inner bottom end, the concave compartment formed at one end of an axis direction of the casing, a moveable object supported in the concave compartment and reciprocally moveable along the axis direction of the casing, and a transmitter to transmit a contact-detection signal of the input device contacting on a display face when the moveable object is pressed and moved into the inner bottom end of the concave compartment for a given distance. When the moveable object is pressed along the axis direction of the casing, the moveable object is moved into the inner bottom end along the axis direction of the casing, and when the moveable object is pressed along a direction slanted from the axis direction of the casing, the moveable object is moved into the inner bottom end along the slanted direction.