Digital Pen With 3D Touchpad for Precision Input
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Solution Overview
Problem
Existing Information Handling Systems (IHS) that rely solely on touchscreens for user input face challenges in tasks requiring fine motor dexterity, such as selecting small targets, and disrupt user workflow when switching between input mechanisms like digital pens and trackpads.
Innovation Solution
A digital stylus with a three-dimensional touchpad that includes capacitive and pressure-sensitive layers around its circumference, allowing for detection of user contact and force, enabling seamless transitions between input modes without requiring users to put down the pen or divert their gaze, and providing haptic feedback for confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a touchscreen interface is used for user input, then the device can operate without a trackpad, but precision for fine motor tasks deteriorates
Solution Approach 1:
The patent combines the digital pen and trackpad into a single integrated device. The pen body incorporates a touchpad surface that can be activated by finger contact while holding the pen, merging the functions of precise pointer input (pen) and gesture control (trackpad) into one unified input mechanism.
Solution Approach 2:
The integrated pen-trackpad device serves multiple functions: it acts as a precision pointer for selecting small targets on the display, simultaneously provides a touchpad surface for gesture inputs, and maintains the benefits of both input methods without requiring separate devices.
2Measurement precision
If multiple input mechanisms (trackpad and digital pen) are provided, then precision for fine motor tasks is improved, but workflow continuity deteriorates due to switching requirements
Solution Approach 1:
The patent merges the trackpad functionality directly into the digital pen body, allowing users to access both precision pointing and gesture capabilities from a single device. This eliminates the need to switch between separate trackpad and pen inputs, maintaining workflow continuity while providing both precision and gesture capabilities.
3Measurement precision
If a trackpad is added to provide precise selection capability, then selection precision is improved, but device complexity increases
Solution Approach 1:
The patent adds the touchpad functionality in a new dimension by wrapping the touchpad surface around the pen body circumference, rather than adding a separate flat trackpad. This utilizes the three-dimensional form factor of the pen to integrate the touchpad surface area efficiently.
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
Enhances precision in touchscreen interactions and reduces workflow disruption by allowing users to perform gestures and squeeze inputs without switching devices, improving usability in virtual and augmented reality applications.
Implementation Method 1
the touchpad comprises one or more capacitive layers configured to detect the user contacting the touchpad
Implementation Method 2
the one or more pressure-sensitive layers comprise layers of piezoelectric polymers
Data Source
AI summary
A pen device includes a battery, a logic unit and a wireless transceiver configured to transmit detected pen device inputs by a user to an IHS (Information Handling System). A touchpad extending around a circumference of the pen device includes capacitive layers configured to detect the user contacting the touchpad. The touchpad also includes pressure-sensitive layers configured to detect a force applied by the user in contacting the touchpad. The combination of inputs from the layers of the touchpad provides the location and pressure of the user's contact with the touchpad. These touchpad inputs in combination with the detected movement of the pen device support detection of inputs such as taps, squeezes and gestures that may serve as inputs to an application operating on the IHS. Utilizing the pen device in this manner, a user may provide various types of application inputs without interruption from the user's current workflow.