Optical Stylus Pen for High-Accuracy Touch Systems
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Solution Overview
Problem
Current optical touch technologies face accuracy limitations, particularly on large screens, making precise operations like drawing or navigation challenging due to their inherent optic characteristics.
Innovation Solution
A computer system comprising a stylus pen with an optical lens for retrieving relative movement information, a processing unit for generating control signals, and a light-emitting unit to send optical signals, paired with an optical touch system that calculates relative coordinates using a sensing module and processing unit, enhancing accuracy through encoded movement data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If optical touch technology is used, then cost and ease of implementation are improved, but touch operation accuracy deteriorates
Solution Approach 1:
The patent replaces the traditional optical touch sensing mechanism with an optical encoding system that uses light reflection and image processing to detect stylus position. The stylus pen includes an optical lens and light-emitting unit that encode movement information, while the touch system uses a sensing module to capture and process this information, achieving high accuracy without relying on conventional optical touch limitations
Solution Approach 2:
The patent introduces an intermediary optical encoding system between the stylus and the touch detection system. The stylus pen acts as an active intermediary device with optical components that generate and transmit encoded movement information, while the touch system's sensing module serves as the intermediary detector that captures this encoded data to calculate precise coordinates
2Device complexity
If optical touch technology is used, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent replaces complex mechanical or capacitive touch sensing mechanisms with a simplified optical encoding and image processing system. The stylus pen incorporates optical components (lens and light-emitting unit) that work with the touch system's sensing module to achieve precise measurement through optical means rather than complex mechanical or electrical systems
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
The system achieves high accuracy in touch operations by decoding relative movement information from optical or wireless signals, enabling precise stylus movement tracking and location calculation, even on large screens.
Implementation Method 1
an optical lens for retrieving relative movement information of the stylus pen when the stylus pen is moving
Implementation Method 2
a light-emitting unit for sending an optical signal according to the control signal, wherein the optical signal includes the relative movement information
Implementation Method 3
The optical touch system comprises a sensing module for receiving the optical signal
Data Source
AI summary
The present disclosure provides a computer system. The computer system comprises a stylus pen and an optical touch system. The stylus pen comprises an optical lens for retrieving relative movement information of the stylus pen when the stylus pen is moving, a first processing unit for analyzing the relative movement information and generating a control signal and a light-emitting unit for sending an optical signal according to the control signal, wherein the optical signal includes the relative movement information. The optical touch system comprises a sensing module for receiving the optical signal and a second processing unit, for calculating relative coordinates of the stylus pen according to the relative movement information included in the optical signal.