Active Stylus Gesture Control Using Accelerometer Taps
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Solution Overview
Problem
Existing touch-sensitive devices lack efficient methods for users to interact with them using a stylus to execute predefined functions or gestures without requiring physical contact.
Innovation Solution
A stylus equipped with an accelerometer and a controller that detects acceleration from tapping, allowing it to transmit signals to initiate predefined functions on a device, potentially incorporating a gyroscope for enhanced interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a stylus uses traditional touch-sensitive interaction methods, then it requires physical contact with the display screen, but this limits the types of gestures and functions that can be executed
Solution Approach 1:
The patent replaces the mechanical contact-based touch screen interaction with an accelerometer-based detection system. The accelerometer detects tapping gestures through acceleration forces, eliminating the need for physical contact with the display screen while maintaining gesture execution capability.
Solution Approach 2:
The accelerometer acts as an intermediary device between the user's tapping gesture and the touch-sensitive display. It captures the mechanical acceleration from tapping and converts it into electrical signals that can be processed by the controller to execute gestures on the screen.
2Adaptability or versatility
If a stylus incorporates an accelerometer and controller for gesture detection, then it can execute predefined functions without physical contact, but this increases device complexity
Solution Approach 1:
The accelerometer serves multiple functions: it detects tapping gestures, determines gesture intensity through acceleration magnitude, and can potentially detect orientation changes. This multi-functionality reduces the need for separate sensors for each detection task, thereby managing complexity while enhancing versatility.
Solution Approach 2:
The system uses different acceleration parameter thresholds to differentiate between various gesture types (e.g., light tap vs. hard tap). By varying the detection parameters rather than adding more hardware components, the system achieves multiple gesture recognition capabilities without proportionally increasing complexity.
3Ease of operation
If a stylus requires physical contact with the screen for interaction, then the interaction method is simple, but it prevents execution of certain gestures that require non-contact movement
Solution Approach 1:
The patent substitutes the optical/electrical touch screen contact detection with an accelerometer-based mechanical motion detection system. This allows the stylus to detect gestures in mid-air through acceleration forces without requiring contact with the screen, thereby maintaining simplicity while increasing gesture variety.
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
Enables users to perform predefined functions and gestures on touch-sensitive devices through non-contact interactions, enhancing usability and functionality.
Implementation Method 1
an accelerometer on the body and operable to detect an acceleration in response to a touch to the body
Data Source
AI summary
In one embodiment, a stylus comprising an accelerometer operable to detect an acceleration in response to a touch to the body and initiate a pre-determined function, a method of using same, and one or more non-transitory computer-readable storage media embodying logic.