Stylus Protocol Switching via Haptic Vibration Signals
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Solution Overview
Problem
Active styluses face compatibility issues with electronic devices due to differing communication protocols, requiring users to manually switch protocols, which is inconvenient.
Innovation Solution
A stylus and touch electronic device system that uses a haptic actuator to encode transmission information into a vibration signal, allowing the stylus to decode this information through a pressure sensor, enabling two-way communication and automatic protocol switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple communication protocols are supported in active styluses, then compatibility with different electronic devices is improved, but device complexity and ease of operation deteriorate due to manual protocol switching requirements
Solution Approach 1:
The stylus automatically detects the communication protocol of the electronic device and switches protocols without user intervention. The controller receives detection information from the touch panel about the device's protocol, then automatically configures the stylus to use the matching protocol, eliminating manual switching operations while maintaining multi-protocol compatibility
Solution Approach 2:
The system uses feedback from the touch panel's detection information about the electronic device's communication protocol to automatically adjust the stylus's protocol configuration. The controller continuously monitors detection information and switches protocols based on this feedback, enabling adaptive compatibility without user input
2Productivity
If vibration signals are used for communication, then information transmission efficiency is improved, but measurement precision requirements increase for pressure sensing
Solution Approach 1:
The communication uses periodic vibration signals with specific frequencies to encode information. The touch panel generates rhythmic vibration patterns that the pressure sensor detects, allowing efficient data transmission through frequency-modulated vibration sequences while maintaining manageable precision requirements through pattern recognition
Solution Approach 2:
The system encodes information by changing vibration signal parameters such as frequency, amplitude, and duration. Different communication protocols are represented by distinct parameter patterns, allowing efficient information transmission through parameter variation rather than requiring extremely high precision sensing
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
Facilitates seamless communication between the stylus and electronic device by allowing automatic protocol switching and improved user experience through vibration-based information transmission.
Implementation Method 1
the haptic actuation device drives the touch panel to output a vibration signal
Implementation Method 2
the pressure sensor senses a vibration force of the vibration signal. The controller decodes the vibration signal according to the vibration force
Data Source
AI summary
A stylus, a touch electronic device, and a touch system are provided. The touch electronic device includes a touch panel and a haptic actuation device, and the haptic actuation device is connected to the touch panel. The stylus includes a pressure sensor and a pen tip. The touch electronic device encodes transmission information into a vibration signal, determines a vibration force of the vibration signal with respect to at least one synchronization time point, and controls the haptic actuation device to drive the touch panel to output the vibration signal. The pen tip of the stylus receives the vibration signal, and the pressure sensor senses the vibration force of the vibration signal. The stylus decodes the vibration signal according to the vibration force with respect to the synchronization time point to obtain the transmission information, and the stylus performs a function according to the transmission information.