Bi-directional Touch Control via Origin Axis
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Solution Overview
Problem
Existing touch input devices struggle to provide both gross and fine grain control in a single user interface, making it difficult to effectively manage varying levels or scroll through data elements.
Innovation Solution
A touch-sensitive display with first and second touch zones separated by an origin axis, where the rate of change of a controlled variable or pointer location depends on the distance from the origin axis, allowing for continuous and directional changes based on touch location and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional touch control interface is used, then the interface is simple to operate, but it cannot provide both gross and fine grain control simultaneously
Solution Approach 1:
The touch interface is divided into different zones with different functions: a first region for gross control where any position changes the controlled variable, and a second region for fine control where positions closer to a reference point provide finer adjustment. This local differentiation allows the interface to provide both coarse and fine control capabilities simultaneously without increasing operational complexity.
Solution Approach 2:
The control precision dynamically changes based on the user's touch position. When the user touches in the second region closer to the reference point, the system automatically provides finer grain control. This dynamic adaptation allows the interface to adjust its precision level based on the user's intent without requiring manual configuration or complex gestures.
2Measurement precision
If the rate of change is constant regardless of touch position, then the control response is predictable, but it cannot provide variable precision control
Solution Approach 1:
The system changes the rate of change parameter based on touch position. In the second region, touches closer to the reference point produce smaller changes in the controlled variable, while touches farther away produce larger changes. This parameter adaptation allows variable precision control without complex mechanical mechanisms, achieving fine and coarse control through software-based rate modulation.
Data Source
AI summary
A user interface for an electronic device incorporating a touch sensitive display forms a touch input zone on a portion of the display. The touch input zone is split into two sections separated by an origin axis. The origin axis may be fixed or may be determined by an initial touch by a user in the touch zone. The device detects a touch by the user in the touch zone and changes a controllable variable or a pointer to an item within a scrollable list of data elements based on the location of the detected touch relative to the origin axis, where the rate of change is determined by the distance from the touch location to the origin axis and the direction of change is determined by the section in which the touch is detected.