Virtual Joystick Touch Control for Limited Screen Space
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Solution Overview
Problem
Existing touchscreen devices with limited interaction space face challenges in user interaction due to the need for physical input devices like keyboards and mice, which limit portability and are prone to failure, and existing virtual controllers require significant screen space or mode switching, making them cumbersome for small devices.
Innovation Solution
Implementing a virtual joystick on touchscreen devices that utilizes small-scale micromovements and micromovements to control interactive elements, leveraging high-resolution capacitive data processing for precise touch input detection and adaptation, allowing seamless interaction with virtual keyboards and voice inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a physical keyboard, mouse, or joystick is used for touchscreen device interaction, then interaction precision is improved, but device portability deteriorates and points of failure increase
Solution Approach 1:
The patent creates a virtual copy of a physical joystick on the touchscreen display that replicates the functionality and control precision of a physical device without requiring the actual physical hardware. The virtual joystick interface mimics the directional control and interaction patterns of physical joysticks, allowing users to achieve the same level of interaction precision while maintaining device portability and eliminating additional physical components.
2Adaptability or versatility
If a virtual keyboard or trackpad is implemented on touchscreen display, then device portability is improved, but ease of operation deteriorates due to limited interaction space
Solution Approach 1:
The patent transitions from traditional 2D touchscreen interaction to 3D spatial interaction by implementing a virtual joystick that utilizes depth perception and three-dimensional touch gestures. This dimensional enhancement allows the virtual controller to provide more intuitive and easier operation despite limited screen space, as users can interact with the virtual joystick using natural hand movements and gestures that map directly to directional control.
3Volume of moving object
If touchscreen devices become smaller to improve portability, then device compactness is improved, but interaction space deteriorates making control more difficult
Solution Approach 1:
The patent changes the interaction parameters by implementing a virtual joystick that responds to subtle finger movements, pressure variations, and gesture patterns rather than requiring large-scale screen interactions. This parameter transformation allows the system to maintain effective interaction capability on smaller devices by detecting and responding to fine-grained touch inputs that can be executed within limited screen real estate.
Data Source
AI summary
There are provided methods and devices for enabling touchscreen device interactions using a virtual joystick. In response to detecting a touch input detected at or near a display of the touchscreen device, touch contact information including a centroid and a contact shape of the touch input may be generated. A speed and a direction associated with an interactive element on the display may be determined, by a model, based on the touch contact information. The interactive element may be controlled on the display, based on the speed and the direction. The disclosed methods and devices may enable improved user interaction with touchscreen devices having limited interaction space, for example, by more accurately distinguishing small-scale micromovements as touch inputs.