Method for key inputting in a portable terminal

The present invention relates to a method for inputting a key in a portable terminal, the method comprising the steps of: receiving handwriting; checking an input size of the input handwriting and a reference size; converting the input handwriting into a text size corresponding to the reference size and inputting the handwriting when the difference between the checked input size of the handwriting and the reference size is less than a predetermined difference. [Reference numerals] (AA) Start; (BB) No; (CC) Yes; (DD) End; (S201) Input handwriting; (S202) Check an input size of the input handwriting; (S203) Check a reference size; (S204) Is the difference between the checked input size and the reference size more than a predetermined difference?; (S205) Convert the input handwriting into a text having a text size corresponding to the reference size and input the text; (S206) Convert the input handwriting into a text having a text size increased as the difference than a text size corresponding to the reference size and input the text