Patent ID: 9720518
Date: 2017-08-01
CPC Classifications: G06F

Claim:
1. A character input apparatus comprising: a touch screen; a first keypad information database for storing information on a first keypad; a second keypad information database for storing information on a second keypad; a first keypad creation unit for di splaying the first keypad configured of at least one or more character keys on the touch screen in a case of character input mode; a first key touch recognition unit for acquiring, if touch of a first key is sensed on the first keypad, a character code corresponding to a value of the first key from the first keypad information database and calling a second keypad creation unit; the second keypad creation unit for creating a second keypad including character keys related to the first key and displaying the second keypad on, the touch screen, in response to the call of the first key touch recognition unit; and a second key touch recognition unit for acquiring, if a touch move action is sensed on the second keypad, a character corresponding to the touch move action from the second keypad information database and displaying the character on the touch screen, wherein the first keypad information database stores at least one of a coordinate value according to a form and a size of a character key configuring the first keypad, a center point coordinate value or a center point color value of the character key arranged on the first keypad, and a character code and a character label corresponding to the center point coordinate value or the center point color value.