Digital Pen Haptic Feedback for Scribble Recognition
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Solution Overview
Problem
In digital pen-based computing environments, users face challenges with limited visual feedback due to occlusion by the pen or device, and distinguishing between important interface elements and scribble inputs, which affects interaction efficiency and accuracy.
Innovation Solution
The system provides haptic, visual, or audible feedback when interacting with points of interest and detects scribble inputs, allowing for contextual menu options and automatic erasure of scribbles, enhancing user interaction and feedback in digital pen-based computing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If visual feedback is provided on the display interface, then user confidence and interaction speed improve, but screen real estate is reduced due to occlusion by the digital pen device and hand
Solution Approach 1:
The patent transitions feedback from the two-dimensional display surface to the three-dimensional tactile domain by implementing haptic feedback through the digital pen device itself. This allows feedback to be delivered without occupying display real estate, resolving the contradiction between providing feedback and maintaining screen space.
Solution Approach 2:
The digital pen device serves as an intermediary that delivers feedback to the user through haptic actuators. Instead of displaying feedback visually on the limited screen space, the pen acts as a mediator to convey interaction information through tactile sensations, thereby preserving screen real estate while maintaining feedback functionality.
2Reliability
If the system provides comprehensive visual feedback, then user confidence improves, but the feedback may be occluded by the user's hand or digital pen device
Solution Approach 1:
The patent replaces the visual feedback mechanism (which is susceptible to occlusion by hand or pen) with a haptic feedback mechanism delivered through the digital pen device. This substitution eliminates the occlusion problem by delivering feedback through tactile sensations that are not blocked by the user's hand or the pen itself.
Solution Approach 2:
The system implements haptic feedback through the digital pen device to provide reliable interaction information to the user. This feedback mechanism ensures that users receive consistent interaction confirmation without the reliability issues associated with visual feedback that can be occluded by hand or pen positioning.
3Measurement precision
If the system distinguishes between interface elements and scribble inputs, then interaction accuracy improves, but system complexity increases due to scribble recognition algorithms
Solution Approach 1:
The patent employs scribble recognition algorithms that analyze parameters such as stroke density, duration, and spatial distribution to distinguish between intentional interface interactions and scribble inputs. By changing and monitoring multiple parameters of the input signal, the system achieves accurate differentiation without requiring overly complex system architecture.
Solution Approach 2:
The scribble recognition system operates autonomously to filter and interpret user inputs, automatically distinguishing between valid interface interactions and scribble noise. This self-service capability reduces the burden on the overall system complexity by handling discrimination tasks independently through embedded algorithms.
Data Source
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AI summary
Feedback via an input device associated with an interaction with a point of interest (POI) and scribble recognition is provided. When using an input device to navigate a GUI, various POIs may be determined as elements beneficial for a user to notice, pay attention to, or avoid. When an input is received that may be associated with a POI, feedback may be provided. Feedback may include haptic, visual, or audible feedback. Scribble recognition may also be provided. When using an input device (e.g., digital pen), a user may "scribble" in a margin to test pen attributes. Upon recognizing a scribble, alternative pen attributes may be presented in a contextual menu. In addition, the scribble may be automatically erased upon selection of a pen attribute or upon receiving input in another area of the UI or alternatively, feedback may be provided prior to erasure of the scribble input.