Abstract: The present invention relates to touch-based input control technology in which cursor operation and pointer moving operation are properly identified by interpreting touch-based gesture in manipulating user terminals such as smart phones (e.g., i-phone) or smart pads (e.g., i-pad). According to the present invention, a user may easily, quickly and automatically control text input operation, cursor move operation and pointer move operation properly in context without cumbersome task of changing input modes.

Abstract: A multi-touch input control system includes: a touch input unit having a multi-touch-type touch input surface which recognizes one or more touch points at the same time, generating the coordinates of one or more touch points inputted through the touch input surface, and transmitting touch information containing the coordinate information; and a computing unit receiving the touch information from the touch input unit, setting one of preset control modes according to the number of touch points, selecting a control command among control commands contained in the set control mode in correspondence to a variation in the number of touch points and a coordinate variation, and generating a control signal corresponding to the control command to performing internal control processing.

Abstract: A multi-touch character input method includes the steps of: (a) preparing a character table in which characters are discriminated and arranged according to multi-touch attributes; (b) detecting a touch occurring on a touch input surface; (c) recognizing a first attribute based on the number of touch points by the touch; (d) recognizing a first character corresponding to the first attribute in the character table; and (e) detecting a change in the first attribute, and recognizing a second character induced from the first character in the character table in correspondence to a second attribute based on the change of the first attribute.