Touch System User Identification via Input Tool Characteristics
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Solution Overview
Problem
Touch equipment struggles to accurately identify the correct user performing touch actions, especially in multi-user scenarios, leading to misunderstandings of touch commands due to its inability to differentiate between users based on touch events alone.
Innovation Solution
A touch system and apparatus that utilize a processing unit to obtain characteristic data from input tools, generate identifiers, and determine specific functions, allowing accurate identification of users and execution of corresponding commands through the use of touch panels and input tools like styluses or fingers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If touch equipment only detects touch events through sensing electrodes, then the detection process is simple, but the ability to identify the correct user and determine touch commands is insufficient
Solution Approach 1:
The patent applies parameter changes by transitioning from detecting only touch event occurrence to measuring multiple characteristics of input tools including capacitance values, contact area, contact position, and contact duration. These changed parameters enable more precise user identification and touch command determination while maintaining a manageable detection system through the existing sensing electrode array.
2Measurement precision
If touch equipment uses multiple characteristic data to identify input tools, then the identification accuracy is improved, but the data processing complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-establishing a correspondence relationship between different input tool characteristics and their identifiers before actual touch operations. The processing unit stores and compares characteristic data against this pre-established mapping, which simplifies real-time data processing while maintaining high identification accuracy through the pre-organized reference framework.
Solution Approach 2:
The system employs feedback mechanisms by continuously comparing detected characteristic data against stored reference data and adjusting identification results based on matching degrees. This feedback loop enables accurate identification even when measurement variations occur, while the processing unit optimizes computational resources by using the feedback to determine when sufficient matching has been achieved.
3Reliability
If touch equipment cannot differentiate between multiple users, then the system operation is simple, but the touch command interpretation becomes erroneous
Solution Approach 1:
The patent applies segmentation by dividing the touch interaction into distinct components: input tool identification, user identification, touch action recognition, and command determination. Each component processes specific characteristic data separately, with the processing unit coordinating these segmented functions to achieve reliable touch command interpretation while maintaining systematic simplicity through clear functional separation.
Data Source
AI summary
A touch system, a stylus, a touch apparatus, and a control method of the touch apparatus are provided. The control method includes following steps. At least one characteristic data of at least one input tool is obtained. An identifier of the input tool is generated according to the characteristic data. If a touch operation on the touch panel is performed with the input tool, a specific function of the touch apparatus is determined according to the identifier of the input tool.