Patent Document ID: 9459702
Application ID: 13583955
Patent Flag: 1

Claim One:
1. A portable terminal capable of inputting three signals by one input key comprising: at least one input key, and a plurality of sensors sensing electrical signals positioned below the input key; wherein a position of the input key pressed for the first time is set as the first reference point, and two second reference points are set on a left and right side at the same distance from the first reference point when the input key is pressed; and an area A is between the two second reference points, a left side of the area A is set as an area B, and the right side of the area A is set as an area C, wherein a left one of the two second reference points is on a boundary between the area A and the area B and a right one of the two second reference points is on a boundary between the area A and the area C, and the size of area B and area C is variable depending on the position of the first reference point, one of three different letters, numbers or symbols is allocated to the A area, another of the three different letters, numbers or symbols is allocated to the B area, and the remaining one of the three different letters, numbers, or symbols is allocated to the C area, when the pressing is removed from the A area, the letter, number or symbol allocated to the A area is input, when the pressing is moved to the B area and the pressing is removed from the B area, the letter, number or symbol allocated to the B area is input, and when the pressing is moved to the C area and the pressing is removed from the C area, the letter, number or symbol allocated to the C area is input.