Touch Screen Linear Control Fine Adjustment via Rolling Contact
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Solution Overview
Problem
Controls on a touch screen are difficult to finely adjust due to the large size of a finger relative to the resolution of the linear control, making precise value selection challenging.
Innovation Solution
An apparatus and method that utilize a touch screen, processor, and memory to detect a specified touch and measure rolling contact of a finger, modifying the linear control based on the rolling contact to enable precise adjustments by calculating a rolling contact angle and applying corresponding modifications to the control values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a finger is used to adjust linear control on touch screen, then the control can be operated, but the large size of finger relative to control resolution makes precise value selection difficult
Solution Approach 1:
The finger contact area is segmented into multiple subareas that contact different pixels on the touch screen. By analyzing the distribution and movement of these subareas during rolling contact, the system can determine precise control values despite the large overall finger size, resolving the contradiction between ease of operation and measurement precision.
2Device complexity
If traditional touch control methods are used, then the control interface is simple, but fine adjustment capability is limited
Solution Approach 1:
The system introduces dynamic analysis of finger movement patterns, specifically rolling contact where subareas of the finger maintain contact with corresponding pixels while rolling. This dynamic behavior enables fine adjustment capability without complicating the basic touch interface, allowing precise control through motion rather than complex interaction modes.
Data Source
AI summary
For fine adjustment of linear control, a processor detects a specified touch of a finger on a linear control of the touch screen. In response to detecting the specified touch, the processor measures a rolling contact of the finger on the touch screen. Subareas of the finger maintain contact with corresponding pixels of the touch screen. The processor modifies the linear control as a function of the rolling contact.