Patent ID: 9411425
Filing Date: 2016-08-09
CPC Classification: G06F

Claim Text:
1. An input device comprising: a display unit configured to display a keyboard screen on a front touch screen that shows a set of a plurality of characters or symbols that can be input by a user using the front touch screen and receive a user's selection of a character or a symbol so as to enter the character or the symbol received from the user on a mobile terminal; an input receiving unit configured to receive the character or the symbol selected by the user from among the plurality of characters or symbols; and a screen control unit configured to reduce a display priority of displaying the keyboard screen displayed on the front touch screen if an input operation is received from a touch panel provided on a rear face of the mobile terminal, wherein, in case of displaying the keyboard screen while displaying a plurality of screens including a first screen and a second screen of an application running in the mobile terminal on the front touch screen, the display unit displays the on-screen keyboard so that the on-screen keyboard is displayed on top of the first screen and on top of the second screen, wherein, whenever the input operation is received from the touch panel, the screen control unit displays the keyboard screen under the first screen and on top of the second screen, and wherein, if the screen control unit has not received an additional operation input from the touch panel for a predetermined time period or longer, the screen control unit adjusts the display of the on-screen keyboard from being displayed under the first screen to being displayed again on top of the first screen.