Active Stylus Haptic Control Using Tip and Ring Position Sensing
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Solution Overview
Problem
Existing stylus pens lack the computing power to delicately control vibration strength, resulting in inadequate immersive vibration experiences.
Innovation Solution
A touch control device and method that determines the coordinate positions of a stylus pen's tip and ring sections, calculates usage scenarios, and generates vibration strength settings to control the vibrator accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If vibration control is implemented in the stylus pen itself, then the user can directly control vibration, but the limited computing power of the stylus pen prevents delicate control of vibration strength
Solution Approach 1:
The patent introduces the touch device as an intermediary between the user and the vibration control system. The touch device's processing circuit receives coordinate information from the stylus pen, determines usage scenarios, and generates vibration strength setting information that is then sent back to control the vibrator. This mediator approach allows the limited-capacity stylus pen to trigger vibration while the more powerful touch device handles the complex vibration strength control calculations.
2Measurement precision
If the stylus pen has more computing power to control vibration delicately, then vibration experience improves, but the device complexity and cost increase
Solution Approach 1:
The patent segments the vibration control system into two parts: the stylus pen handles simple coordinate detection and usage scenario identification, while the touch device handles complex vibration strength setting and control. This segmentation allows the stylus pen to remain simple and low-cost while the touch device, which already has sufficient computing power for other tasks, handles the delicate vibration control calculations.
3Reliability
If vibration strength is increased to provide immersive feedback, then haptic experience improves, but energy consumption increases
Solution Approach 1:
The patent implements dynamic vibration strength adjustment based on real-time usage scenarios. The processing circuit determines the current usage scenario (such as writing, drawing, or erasing) and generates appropriate vibration strength settings dynamically. This allows the system to provide strong haptic feedback when needed (improving reliability of haptic experience) while reducing vibration strength during other operations (lowering energy consumption), rather than maintaining constant high-strength vibration.
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
Provides exquisite vibration control by adjusting vibration strength based on usage scenarios and surface friction, enhancing the haptic feedback experience.
Implementation Method 1
The stylus pen may include a vibrator device to produce force to vibrate the stylus pen for providing haptic feedback for the user
Data Source
AI summary
A touch control device, applied in a touch device with a touch panel, comprising a touch control circuit, coupled to the touch panel, and configured to determine a coordinate position of a tip section of an active stylus pen according to a tip signal from the tip section and a coordinate position of the ring section of the active stylus pen according to the ring signal from the ring section; and a processing circuit, coupled to the touch control circuit and configured to determine a usage scenario according to the coordinate position of the tip section and the coordinate position of the ring section and generate vibration strength setting information corresponding to the determined usage scenario, wherein the vibration strength setting information is provided to the active stylus pen for performing vibration operations.