Touch Panel Finger Shape Detection for Multi-Operator Recognition
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Solution Overview
Problem
Existing operation display devices struggle to accurately differentiate between multi-touch operations performed by a single operator and separate single-touch operations carried out by multiple operators, especially in scenarios where users are close to each other, leading to incorrect recognition of touch inputs.
Innovation Solution
The implementation of a touch panel system that simultaneously detects multiple touch operations and utilizes a finger shape detecting unit to analyze finger attributes, such as shape and direction, to determine whether multiple touch operations are performed by the same operator or multiple operators, allowing for accurate judgment and adjustment of display content accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the touch panel recognizes multiple simultaneous touch operations as multi-touch operations, then the productivity and ease of operation are improved, but the reliability deteriorates when users are close to each other causing incorrect recognition of touch inputs
Solution Approach 1:
The patent changes the parameter used for judgment from touch position distance to finger attribute characteristics (shape, size, direction). By analyzing these attributes detected by the finger shape detecting unit, the system can reliably distinguish whether multiple touches are from one operator or multiple operators, resolving the reliability issue while maintaining multi-touch functionality
Solution Approach 2:
The patent replaces the mechanical judgment method (based on physical distance between touch positions) with an attribute-based detection method. Instead of measuring spatial separation, the system uses finger shape detection and attribute comparison to determine operator identity, enabling accurate recognition even when users are close together
2Ease of operation
If the system divides the display into multiple areas for multiple users, then the ease of operation for multiple users is improved, but the device complexity increases
Solution Approach 1:
The system automatically performs area assignment and operation routing without requiring manual configuration or complex user setup. The finger attribute detection automatically identifies operators and assigns appropriate display areas and operations, reducing system complexity while maintaining ease of multi-user operation
Data Source
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AI summary
Disclosed is an operation display device, including: a display unit; a touch panel to simultaneously detect touch operations carried out with fingers to a display surface of the display unit; a finger shape detecting unit to detect a shape of a contact part of the finger, which contacts to the display surface in each of the touch operations; and a control unit to control display contents of the display unit, wherein when the touch operations are simultaneously detected by the touch panel, the control unit judges whether the touch operations are an operation carried out by one operator or are operations carried out by a plurality of operators in accordance with the shape of the contact part of the finger relating to each touch operation, and changes the display contents of the display unit in accordance with a result of judging the touch operations.