Abstract: An input device is provided. The input device includes a display that displays a keypad for input of a character and a character input window showing a character string input through the keypad; a gesture sensor that senses a gesture of a user; and a controller that controls the display, based on the gesture, wherein the keypad comprises: a central item; a plurality of peripheral items arranged while being spaced from one another around the central item; and a plurality of guide lines corresponding to the plurality of the peripheral items, the plurality of the guide lines are in a straight or curved line form directed from each of the plurality of the peripheral items toward the central item, and have different forms and directions.

Abstract: A character input apparatus comprises a display unit configured to display a graphic zone that displays multiple character groups including one or more characters and a touch zone that senses a touch of an input mean; a display control unit configured to select any one of the multiple character groups depending on a touch type of the input mean sensed by the touch zone and display the selected character at a predetermined position of the graphic zone; and an input unit configured to set the character displayed at the predetermined position of the graphic zone for a predetermined time as an input character. The display control unit selects a character moved to be closest to the predetermined position when the characters displayed on the graphic zone are moved in a sliding direction of the input mean and displays the selected character at the predetermined position of the graphic zone.

Abstract: An input device is provided. The input device includes a display that displays a keypad for input of a character and a character input window showing a character string input through the keypad; a gesture sensor that senses a gesture of a user; and a controller that controls the display, based on the gesture, wherein the keypad comprises: a central item; a plurality of peripheral items arranged while being spaced from one another around the central item; and a plurality of guide lines corresponding to the plurality of the peripheral items, the plurality of the guide lines are in a straight or curved line form directed from each of the plurality of the peripheral items toward the central item, and have different forms and directions.

Abstract: A character input apparatus comprises a display unit configured to display a graphic zone that displays multiple character groups including one or more characters and a touch zone that senses a touch of an input mean; a display control unit configured to select any one of the multiple character groups depending on a touch type of the input mean sensed by the touch zone and display the selected character at a predetermined position of the graphic zone; and an input unit configured to set the character displayed at the predetermined position of the graphic zone for a predetermined time as an input character. The display control unit selects a character moved to be closest to the predetermined position when the characters displayed on the graphic zone are moved in a sliding direction of the input mean and displays the selected character at the predetermined position of the graphic zone.

Abstract: An input apparatus includes a gesture sensing unit for sensing a hand gesture of a user; and an input signal generation unit for generating an input signal for control of a target electronic device based on the sensed hand gesture. The hand gesture of the user includes at least one of a pinching gesture with two or more fingers, a pointing gesture with one finger, and a scratching gesture with one finger to a camera.

Abstract: Provided is a sleep scheduling method based on directions of a target in a sensor network. A track subregion is set as an oval shape that is in proportion to a probability of the target moving in certain directions so as to track the target, and sleep patterns of sensor nodes in the tracking subregion are scheduled in consideration of a probability of the target moving in certain directions. As such, the energy efficiency of each sensor node in the sensor network can be improved.