Patent ID: 8001467
Filing Date: 2011-08-16
Classification: G06F

Abstract:
1. A method of inputting letters in a mobile terminal using letter keys each of which has at least one letter allocated thereto, the method including: determining whether there is an input of the letter keys; extracting first proposed letter sets from combinations of letters corresponding to the input of the letter keys; displaying the extracted first proposed letter sets on a screen of the mobile terminal, wherein the displaying of the first proposed letter sets includes locating a first focus at one of the first proposed letter sets; selecting one of the extracted first proposed letter sets; receiving the selected first proposed letter set as input data when a first key is input; extracting second proposed letter sets based on the selected first proposed letter set when a second key is input; displaying the extracted second proposed letter sets on the screen, wherein the displaying of the second proposed letter sets includes locating a second focus at one of the second proposed letter sets; determining whether one of the second proposed letter sets is selected; receiving the selected second proposed letter set as input data; receiving an input of a specific key after the first proposed letter sets are displayed; deleting a last letter of the first proposed letter set at which the first focus is located; and extracting again the first proposed letter sets except the deleted last letter, wherein the extracted second proposed letter sets include each letter of the selected one of the first proposed letter sets.