ALPHABET INPUT DEVICE AND ALPHABET RECOGNITION SYSTEM IN SMALL-SIZED KEYPAD

• US 20130088432A1
• Filed: 11/30/2012
• Published: 04/11/2013
• Est. Priority Date: 07/14/2008
• Status: Abandoned Application

• Current Assignee: INHA Industry Partnership Institute
• Original Assignee: INHA Industry Partnership Institute
• Inventors: Lee, Kyung Hee, Nyang, Dae Hun
• Application Number:
  US13/690,146
• Publication Number:
  US 20130088432A1
• Time in Patent Office: Days
• US Class Current: 345/168
• CPC Class Codes: G06F 3/0233 Character input methods
• CPC Class Codes: G06F 3/0235 using chord techniques G06F3/0234 takes precedence

Abstract

Disclosed herein are an alphabet input device and an alphabet recognition system in a small-sized keypad. The device includes: a first keypad part comprising a plurality of buttons each of which is assigned with a symbol extracted from strokes of alphabet characters so that the alphabet characters be input by one of the buttons or a combination of two or more of the buttons; and a second keypad part comprising one or more buttons each assigned with an alphabet character having a high usage frequency. With the device, alphabet characters can be inputted in a simpler and more efficient manner.

Claims

1. A character input device in a keypad, comprising:

a keypad unit to receive an input of a character input button from a user, the keypad unit comprising a plurality of character input buttons;

a character forming unit to form a character with two inputs of the character input buttons or fewer; and

a display unit to display the formed character on the user,

wherein the keypad unit receives the input through a touch screen.

2. The character input device of claim 1, wherein the keypad unit includes the character input buttons corresponding to characters ‘

-’

, ‘

∥

’

, ‘

.’

, ‘

I’

, ‘

C’

, ‘

O’

, ‘

U’

, ‘

V’

, ‘

A’

, ‘

E’

, ‘

P’

, ‘

O’

, and ‘

T’

,

the character is formed by the input character alone or a combination of the input characters through the character forming unit, and

the character formed by the combination of the input characters is determined based on a first input and a second input.

3. The character input device of claim 2, wherein a character ‘

B’

is formed with the first input of the ‘

P’

button and the second input of the ‘

O’

button, and a character ‘

R’

is formed with the first input of the ‘

P’

button and the second input of the ‘

.’

button.

4. The character input device of claim 2, wherein a character ‘

D’

is formed with the first input of the ‘

I’

button and the second input of the ‘

O’

button, a character ‘

K’

is formed with the first input of the ‘

I’

button and the second input of the ‘

C’

button, a character ‘

N’

is formed with the first input of the ‘

I’

button and the second input of the ‘

V’

button, and a character ‘

L’

is formed with the first input of the ‘

I’

button and the second input of the ‘

-’

button.

5. The character input device of claim 2, wherein a character ‘

M’

is formed with the first input of the ‘

∥

’

button and the second input of the ‘

V’

button, and a character ‘

H’

is formed with the first input of the ‘

∥

’

button and the second input of the button.

6. The character input device of claim 2, wherein the second input of the ‘

.’

button forms a character ‘

G’

with the first input of the ‘

C’

button, a character ‘

Q’

with the first input of the ‘

O’

button, a character ‘

F’

with the first input of the ‘

T’

button, a character ‘

Y’

with the first input of the ‘

V’

button, a character ‘

i’

with the first input of the ‘

I’

button, a character ‘

j’

with the first input of the ‘

U’

button, and a character ‘

,’

with the first input of the ‘

-’

button.

7. The character input device of claim 2, wherein the character is formed with a double click as the first input and the second input, and

a character ‘

W’

is formed with the double click of the ‘

∥

’

button, a character ‘

X’

is formed with the double click of the ‘

I’

button, and a character ‘

Z’

is formed with the double click of the ‘

-’

button.

8. The character input device of claim 2, wherein a character ‘

S’

is formed with the first input of the ‘

C’

button and the second input of the ‘

O’

button, and a character ‘

?’

is formed with the first input of the ‘

O’

button and the second input of the ‘

.’

button.

9. The character input device of claim 2, wherein the keypad unit displays a character input button available for the second input distinguishably when the keypad unit identifies the first input.

10. The character input device of claim 2, wherein the first input and the second input are based on a touch-and-drag operation, and

the first input is implemented by touching a character input button, and the second input is implemented by dragging the touched character input button and releasing the touch.

11. A method for inputting a character in a keypad, the method comprising:

receiving an input, from a user, of a character input button in a keypad comprising a plurality of character input buttons;

forming a character with two inputs of the character input buttons or fewer; and

displaying the formed character on the user,

wherein the receiving of the input comprises receiving the input through a touch screen.

12. The method of claim 11, wherein the character input buttons include buttons corresponding to characters ‘

-’

, ‘

∥

’

, ‘

.’

, ‘

I’

, ‘

C’

, ‘

O’

, ‘

V’

, ‘

A’

, ‘

E’

, ‘

P’

, ‘

O’

, and ‘

T’

,

the character is formed by the input character alone or a combination of the input characters, and

the character formed by the combination of the input characters is determined based on a first input and a second input.