Stylus Virtual Shadow Display for Touchscreen Precision
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Solution Overview
Problem
Users face difficulties in accurately selecting items on small touchscreen devices using an active stylus due to uncertainty about the stylus tip's location, leading to a negative user experience.
Innovation Solution
A computing device displays a virtual shadow of the stylus based on sensor data from the stylus, providing visual feedback that mimics pen interactions on paper, allowing users to select items by positioning the stylus shadow near the intended target without touching the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user uses an active stylus on a small touchscreen display, then the user can interact with the display, but the user cannot accurately determine the stylus tip location leading to imprecise selections
Solution Approach 1:
The patent displays a shadow representation of the stylus tip on the touchscreen surface, creating a visual copy that indicates the stylus location. This shadow copy allows users to accurately determine where the stylus tip is positioned without directly seeing the physical stylus tip on the screen surface, thereby improving location accuracy while maintaining stylus interaction capability.
Solution Approach 2:
The shadow acts as an intermediary visual element between the physical stylus and the user's perception. Instead of directly displaying the stylus tip position which is hard to perceive on small screens, the system introduces a shadow intermediary that clearly indicates the stylus location, mediating the information transfer from the stylus to the user's visual system.
2Area of stationary object
If the display device is small (less than 10 inches), then the device is portable and compact, but the user cannot accurately determine stylus tip location for precise selections
Solution Approach 1:
The shadow display creates a visual copy of the stylus tip position on the small screen, enabling users to accurately determine stylus location despite the limited display area. The shadow provides enhanced visual feedback that compensates for the small screen size, allowing precise selections without requiring a larger display.
3Productivity
If the stylus tip touches the display surface, then the user can make selections, but the user experience is degraded due to uncertainty about tip location
Solution Approach 1:
The shadow display provides real-time visual feedback about the stylus tip location and pressure to the user. This feedback loop allows users to see exactly where their stylus is positioned and how much pressure they are applying, improving both the ease of operation and the ability to make precise selections without touching the screen surface.
Data Source
AI summary
In some examples, a computing device may receive stylus sensor data from one or more sensors in a stylus that is used to interact with the computing device. The computing device may determine, based on the stylus sensor data, (i) a stylus height of a tip of the stylus from a display device and (ii) one or more stylus angles of the stylus relative to the display device. The computing device may display, on the display device, a virtual shadow of the stylus at a location based at least in part on the stylus height, the stylus angles, and a location of a virtual light source. The computing device may display, on the display device, one or more virtual shadows of content items corresponding to the stylus acting as a virtual light source.