Method for providing a user interface based on touch pressure, and electronic device using same

1. A method for providing a User Interface (UI) of an electronic device, the method comprising:

displaying three touch points to receive touch inputs;

detecting touch pressures of touch inputs through a touch screen of the electronic device;

unlocking the electronic device when each of the touch pressures of the touch inputs is within a predetermined magnitude range,

wherein the detecting comprises:

when a first touch pressure of the touch pressures is under the predetermined magnitude range, displaying a three-layered circle having a filled innermost circle, an unfilled middle circle, and an unfilled outermost circle, on a first touch point which corresponds to the first touch pressure;

when a second touch pressure of the touch pressures is above the predetermined magnitude range, displaying a three-layered circle having the filled innermost circle, a filled middle circle, and a filled outermost circle, on a second touch point which corresponds to the second touch pressure;

when a third touch pressure of the touch pressures is within the predetermined magnitude range:

displaying a three-layered circle having the filled innermost circle, the filled middle circle, and the unfilled outermost circle, on a third touch point which corresponds to the third touch pressure; and

when the third touch pressure, which is within the predetermined magnitude range, is sustained for a predetermined time, changing the displayed three-layered circle having the filled innermost circle, the filled middle circle, and the unfilled outermost circle to a different shape from the three-layered circle having the filled innermost circle, the filled middle circle, and the unfilled outermost circle; and

wherein the unlocking comprises unlocking the electronic device when each of the three touch points is changed to the different shape from the three-layered circle; and

controlling the electronic device, based on a touch pressure.

2. The method of claim 1 , wherein the controlling comprises adjusting a size or a zoom of a Graphical User Interface (GUI) element displayed in the touch screen, based on the touch pressure.

3. The method of claim 2 , wherein the controlling comprises controlling a speed of the GUI element displayed in the touch screen, based on the touch pressure.

4. The method of claim 2 , wherein the controlling further comprises:

changing an object to be adjusted, from the GUI element to another GUI element; and

adjusting a size or a zoom of the another GUI element.

5. The method of claim 1 , wherein the controlling comprises controlling at least one of a size, a movement, and a rotation of a GUI element displayed in the touch screen, based on the touch pressure.

6. The method of claim 1 , wherein the controlling comprises controlling at least one of a thickness, a saturation, and a color of a GUI element displayed in the touch screen, based on the touch pressure.

7. The method of claim 1 , wherein the controlling comprises controlling a speed of a GUI element displayed in the touch screen, based on the touch pressure.

8. The method of claim 7 , wherein the speed of the GUI element is one of a speed for moving the GUI element, a speed for turning the GUI element, and a speed for playing the GUI element.

9. The method of claim 1 , wherein the controlling comprises controlling a movement of a GUI element given a weight, based on the touch pressure.

10. The method of claim 1 , wherein the controlling comprises controlling at least one of an acoustic output and a tactile output of the electronic device, based on the touch pressure.

11. The method of claim 1 , wherein the controlling comprises selecting or executing a menu item, based on the touch pressure.

12. The method of claim 1 , wherein the controlling comprises controlling a mode of the electronic device, based on the touch pressure.

13. The method of claim 1 , wherein the controlling comprises controlling a wireless output of the electronic device, based on the touch pressure.

14. An electronic device, comprising:

a touch screen configured to:

display three touch points to receive touch inputs, and

detect touch pressures of touch inputs by a user, through a touch screen of the electronic device; and

a control part configured to:

unlock the electronic device when each of the touch pressures of the touch inputs is within a predetermined magnitude range, and

control operations, based on the touch pressures,

wherein the control part is further configured to:

when a first touch pressure of the touch pressures is under the predetermined magnitude range, display a three-layered circle having a filled innermost circle, an unfilled middle circle, and an unfilled outermost circle, on a first touch point which corresponds to the first touch pressure,

when a second touch pressure of the touch pressures is above the predetermined magnitude range, display a three-layered circle having the filled innermost circle, a filled middle circle, and a filled outermost circle, on a second touch point which corresponds to the second touch pressure,

when a third touch pressure of the touch pressures is within the predetermined magnitude range:

display a three-layered circle having the filled innermost circle, the filled middle circle, and the unfilled outermost circle, on a third touch point which corresponds to the third touch pressure; and

when the third touch pressure, which is within the predetermined magnitude range, is sustained for a predetermined time, change the displayed three-layered circle having the filled innermost circle, the filled middle circle, and the unfilled outermost circle to a different shape from the three-layered circle having the filled innermost circle, the filled middle circle, and the unfilled outermost circle; and

unlock the electronic device when each of the three touch points is changed to the different shape from the three-layered circle.