Patent ID: 7339498
Filing Date: 2008-03-04
Classification: G06F,H04M

Abstract:
1. An alphabetic character inputting device based on an array of 3×4 keypad buttons of a phone, using a character inputting interface, comprising: a keypad including a plurality of key buttons to which alphabetic characters are assigned in such a manner that alphabetic characters which are found on adjacent keys in a QWERTY keyboard are arranged on one or adjacent key buttons in the keypad by dividing alphabetic characters into a Group I for left hand inputting and a Group II for right hand inputting on the QWERTY keyboard and into a 1st Character Set, a 2nd Character Set, and a 3rd Character Set according to usage frequency, selecting one alphabetic character from each Character Set to form character combinations, and distributing these character combinations over the key buttons such that the alphabetic characters of Group I are arranged in a left column or a middle column of the keypad array and the alphabetic characters of Group II are arranged in a right column or a middle column of the keypad array; and an input key processing unit for processing the character inputting operation through the keypad and outputting corresponding characters, wherein the Group I consists of characters ‘Q’, ‘W’, ‘E’, ‘R’, ‘T’, ‘A’, ‘S’, ‘D’, ‘F’, ‘G’, ‘Z’, ‘X’, ‘C’, ‘V’ and ‘B’, which are assigned to numeral key buttons ‘