Abstract
The touch interface is an input method widely used in smart devices. Recently, new touch interface which supports force value has been introduced. The force-touch interface adds a factor called depth to the plane coordinates as compared to the existing touch interface. Despite the advantages of force-touch, which can provide touch position and force intensity information with one input, there are still many devices that cannot support force values. To provide them with a force-touch interface, we developed a force-touch cover for existing smart devices that do not support the existing force value. It is a way to provide the force value to the smart device by recognizing the force value through the sensor installed in smartphone case. However, it is difficult to apply the force value obtained through such a device directly to the force-touch interface, because it is necessary to distinguish between force touch and general touch. Therefore, in order to use the force-touch interface using the force-touch cover proposed in this article, the force value measured at the time of general touch is analyzed by user experiment to set the general touch area. Also, an area outside the general touch area is set as the force-touch area. In the force-touch and general touch area, the area is applied considering the error of the force value actually measured in the developed force-touch cover. Therefore, in this article, we analyze the force value input through the proposed force-touch cover and find a reference value that can distinguish force touch from general touch by user experiment and propose a method to apply it.
Highlights
Since the introduction of the touch screen, the input method has been studied as being adopted as the main input device such as smartphones
Using the manufactured force-touch cover, we found the force value that can be measured according to the position in the smartphone
The results show the minimum time and minimum force values that the poster can use in force-touch cover
Summary
Since the introduction of the touch screen, the input method has been studied as being adopted as the main input device such as smartphones. General touch methods such as single tap, long press, and pinch zoom have been devised. A smart screen processes common functions, such as zoom in/out or move smoothly on the screen, by requiring the geometric data (X-coordinate, Y-Coordinate) of at least two touched parts. The intension information is automatically calculated by the force/pressuring sensor of the screen. This interface is often considered an College of Information and Communication Engineering, Sungkyunkwan
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