Apparatus and method for inputting character using touch screen in portable terminal

• US 9,891,819 B2
• Filed: 12/16/2013
• Issued: 02/13/2018
• Est. Priority Date: 10/29/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Huh, Jung-Chul
• Primary Examiner(s): Karimi, Pegeman
• Application Number:
  US14/107,504
• Publication Number:
  US 20140104215A1
• Time in Patent Office: 1,520 Days
• Field of Search: 345156, 345157, 345173, 345174, 345175
• CPC Class Codes: G06F 2203/04805 Virtual magnifying lens, i.e. window or frame movable on top of displayed information to enlarge it for better reading or selection
• CPC Class Codes: G06F 3/02 Input arrangements using manually operated switches, e.g. using keyboards or dials
• CPC Class Codes: G06F 3/0233 Character input methods
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/04845 for image manipulation, e.g. dragging, rotation, expansion or change of colour
• CPC Class Codes: G06F 3/04886 by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
• CPC Class Codes: G06F 3/04895 Guidance during keyboard input operation, e.g. prompting
• CPC Class Codes: G09G 5/26 for modifying the character dimensions, e.g. double width, double height
• CPC Class Codes: H04M 1/0266 for a display module assembly

Abstract

A method of inputting characters in a portable terminal is provided. The method includes displaying a plurality of characters on a keyboard, detecting a touch on the keyboard, displaying one character corresponding to a key corresponding to the touch on the keyboard as enlarged relative to other characters upon detecting the touch, displaying the character, which is displayed enlarged when detecting a release of the touch, in a character input area upon detecting a release of the touch on the keyboard, and displaying a plurality of recommended words in a vicinity of the keyboard based on characters which have been inputted so far, at least one of the plurality of recommended words comprising the characters which have been inputted so far.

Claims

1. A method of inputting characters in a portable terminal, comprising the steps of:

displaying a plurality of characters on a keyboard;

detecting a touch on the keyboard;

displaying a first character corresponding to a key corresponding to the touch on the keyboard as enlarged relative to other characters upon detecting the touch;

displaying a second character corresponding to a key corresponding to a touch-move on the keyboard as enlarged relative to other characters on the keyboard upon detecting the touch-move without a release of the touch;

displaying the second character, which is displayed enlarged when detecting the release of the touch, in a character input area upon detecting the release of the touch on the keyboard; and

in response to displaying the second character, displaying a plurality of recommended words in a vicinity of the keyboard in the character input area,

wherein the recommended words are determined based on the second character and other characters which have been displayed in the character input area.

2. The method of claim 1, wherein the keyboard is a QWERTY keyboard.

3. The method of claim 1, wherein the release of the touch is detected when an object is released from the keyboard, or when a next touch is detected, or when the touch is maintained over a predetermined length of time.

4. The method of claim 1, wherein the second character is displayed as enlarged near its corresponding key or in a predetermined portion of the character input area.

5. The method of claim 1, further comprising:

selecting one of the recommended words; and

displaying the selected recommended word in the character input area.

6. The method of claim 1, further comprising, when the character is displayed in the character input area, generating at least one of a vibration, sound, and a graphic effect.

7. The method of claim 1, wherein the portable terminal is a pocket-sized communication terminal.

8. A computer-readable medium comprising instructions that, when executed by at least one processor of a portable terminal, cause the portable terminal to execute the method of claim 1.

9. The method of claim 1, further comprising, upon detecting a touch input on the displayed recommended word, displaying, in the character input area, the recommended word in lieu of the other characters and the second character which have been displayed.

10. The method of claim 1, further comprising displaying a predicted character of the keyboard as enlarged, wherein the predicted character is determined as a character which has not been displayed among characters of the recommended word.