MOBILE DEVICE ADOPTING A HYBRID INPUT SYSTEM COMPRISING A FRONT TOUCH SCREEN, AND INPUT METHOD

摘要

The present invention relates to a mobile technology adopting a hybrid input system using a front touch screen and a rear keypad. The present invention achieves a three-dimensional key input system which maintains the merits of a touch screen input system and supplements the touch screen input system when using a portable phone or a variety of mobile devices adopting the touch screen input system. The present invention enables a user to use a maximum of eight fingers to manipulate a rear keypad so that efficient key input can be performed as compared to the system using only two fingers for manipulating a front touch screen. Further, the keypad is arranged to be suitable for the arrangement of the fingers of users to improve the convenience of handling programs requiring frequent key manipulation, such as a game program, and two types of input means matched with each other are positioned symmetrically to each other to enable users to intuitively match key manipulation and input with ease.