Apparatus and method for inputting alphabet characters on keypad

A method for entering characters from a keypad, comprising:

• grouping the characters into groups each assigned to a button, the characters of a corresponding group comprising a representative character and its succession characters;
• selecting a “next control” by pressing a control button;
• and
• entering the succession characters through a combination of the previous character and the “next control”.

A method for entering characters from a keypad, which is to input Arabic characters, the method comprising:

• grouping characters having meanings of numerals into nine groups of about three characters, the nine groups comprising a first group of characters having the meaning of a numeral starting with 1 on the keypad (i.e., 1, 10, 100 or 1, 10, 100, 1000), a second group of characters having the meaning of a numeral starting with 2 on the keypad (i.e., 2, 20, 200), and third to ninth groups of characters having the meaning of a numeral starting with 3 to 9 on the keypad, respectively;
• assigning the individual groups to buttons [1] to [9], respectively;
• designating characters of a unit as representative characters in each of the nine groups, the characters of a unit comprising 1-unit characters meaning 1, 2, 3, . . . , or 9, 10-unit characters meaning 10, 20, 30, . . . , or 90, and 100-unit characters meaning 100, 200, 300, . . . , or 900;
• and
• regarding the characters of the other units as succession characters of the representative character and control processing succession characters.

A method for entering characters from a keypad, which is to input Korean characters, the method comprising:

• grouping ten basic consonants and ten basic vowels into ten pairs of a basic consonant and a basic vowel;
• selecting a consonant with one stroke and a vowel with two strokes;
• assigning an aspirated consonant control to either a button [*] or a button [#], and a tense consonant control to a button not designated for the aspirated consonant control;
• and
• control processing aspirated consonants and tense consonants.

A method for entering characters from a keypad, which is to input Korean characters by selecting characters or controls on the keypad using a repeat selection method, the method comprising:

• optionally assigning nine of ten basic consonants other than one destitute of an aspirated consonant or a tense consonant to numeral buttons [1] to [9], respectively;
• optionally assigning three vowel elements “—”, “.” and “” to the three other buttons [*], [0] and [#];
• and
• arranging each of the basic consonants and vowel elements to be selected with one stroke of the corresponding button.

A method for entering characters from a keypad, which is to input various symbols through the keypad, the method comprising:

• dividing the symbols into symbol groups;
• assigning the meaning of a specific symbol group to a button on the keypad (i.e, associating a specific symbol group with a button on the keypad;
• arranging a plurality of symbol controls (i.e., symbol 1, symbol 2, . . . ) on a button on the keypad;
• selecting the symbol controls by using a repeat selection method;
• and
• inputting the symbols of the specific symbol group through a combination of the button, endowed with the meaning of the specific symbol group, and the symbol controls.