Efficient character input scheme based on gyro-accelerometer sensor for NUI

Abstract

In recent years, as information technology (IT) has advanced rapidly, multimedia smart devices have been designed to provide a variety of services with which users can interact using touch screens. A smart phone is among the typical smart devices and it has provided simple mobility and a convenient interface via touch screens, as well as enabling desktop personal computer (PC) operations thanks to their high performance and miniaturization. In pace with this rapid advancement, a variety of input schemes has also been developed to allow users to enter text conveniently and rapidly. However, despite the development of such various input schemes, learning delay time and typos occur frequently. Furthermore, as touch screen-based multimedia smart devices employ finger-based text inputs, disabled persons or individuals who cannot use their fingers freely may have difficulties. In this paper, a virtual keyboard using a Gyro-Accelerometer sensor (VGA), which is an efficient text input keypad using an accelerometer sensor and gyro sensor, is proposed. The VGA can input text using a gyro sensor and accelerometer sensor embedded in multimedia smart devices. Through the VGA, users whose fingers are not freely available can enter texts easily and comfortably.