Electronic text input involving word completion functionality for predicting word candidates for partial word inputs

• US 7,886,233 B2
• Filed: 10/21/2005
• Issued: 02/08/2011
• Est. Priority Date: 05/23/2005
• Status: Expired due to Fees

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Rainisto, Roope, Hard, John
• Primary Examiner(s): Lo; Weilun
• Assistant Examiner(s): Augustine; Nicholas
• Application Number:
  US11/255,580
• Publication Number:
  US 20060265648A1
• Time in Patent Office: 1,936 Days
• Field of Search: 715/534, 715/716, 715/843, 715/255, 715/256, 715/261, 715/773, 715/780, 715/810, 715/825, 715/840, 725/37, 710/30, 348/552
• US Class Current: 715/773
• CPC Class Codes: G06F 3/0237 using prediction or retrieval techniques
• 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 40/274 Converting codes to words; Guess-ahead of partial word inputs

Abstract

A text input method is described for an electronic apparatus having a user interface with text input means and a display screen. Word completion functionality is provided for predicting word candidates for partial word inputs made by the user with the text input means. The method involves receiving a partial word input from the user and deriving a set of word completion candidates using the word completion functionality. Each of the word completion candidates in the set has a prefix and a suffix, wherein the prefix corresponds to the partial word input. The method also involves presenting the suffices for at least a sub set of the word completion candidates in a predetermined area on the display screen, wherein each of the presented suffices is made selectable for the user.

Claims

1. A text input method for an electronic apparatus having a user interface with text input means and a display screen, wherein word completion functionality is provided for predicting word candidates for partial word inputs made by a user employing said text input means, wherein said display screen is touch-sensitive and said text input means includes a virtual keyboard which is presentable on said touch-sensitive display screen, the method involving:

receiving a partial word input from said user;

deriving a set of word completion candidates using said word completion functionality, each of the word completion candidates in said set having a prefix and a suffix, wherein the prefix corresponds to said partial word input; and

presenting the suffixes for at least a sub set of the word completion candidates in a predetermined area located within or at said virtual keyboard on said display screen, wherein each of the presented suffixes is made selectable for said user, said step of receiving a partial word input from said user involving detecting successive actuations, by said user, of virtual keys of said virtual keyboard which accumulate into said partial word input, and wherein said predetermined area is located entirely within a space bar included in said virtual keyboard wherein each of the presented suffixes is made selectable for said user.

2. A text input method as defined in claim 1, wherein said display screen is touch-sensitive and said text input means includes handwriting recognition (HWR) functionality for interpreting a hand-written input, made by said user on said touch-sensitive display screen, into at least one symbol among a set of possible symbols in a predefined symbol set, so as to generate said partial word input.

3. A text input method as defined in claim 1, wherein a particular presented suffix belongs to a full word completion candidate representing a full word, made up by the candidate'"'"'s prefix and suffix, in a currently active language for said word completion functionality.

4. A text input method as defined in claim 1, wherein the prefix of a particular word completion candidate corresponds to a first portion of a full word in a currently active language for said word completion functionality, the presented suffix of said particular word completion candidate corresponds to a second portion of said full word, following after said prefix and being followed in said full word by at least a third portion of said full word, and wherein said step of presenting involves presenting the second portion but not the third portion.

5. A text input method as defined in claim 4, involving the steps of

detecting selection by said user of the presented suffix for said particular word completion candidate;

appending the selected suffix to said partial word input; and

repeating said steps of deriving and presenting for the thus appended partial word input, consisting now of the first and second portions of said full word.

6. A text input method as defined in claim 4, wherein said second portion is a syllable of said full word.

7. A text input method as defined in claim 1, involving the steps of

receiving an additional character input made by said user employing said text input means;

appending said additional character input to said partial word input; and

repeating said steps of deriving and presenting for the thus appended partial word input.

8. A text input method as defined in claim 1, involving the step of presenting also the prefix that corresponds to said partial word input in said predetermined area.

9. A text input method as defined in claim 8, wherein the prefix is shown first, followed by each presented suffix in a successive order on said display screen.

10. A text input method as defined in claim 1, involving the steps of

detecting selection by said user of one of the presented suffixes;

and

for the selected suffix, replacing a presentation of said partial word on said display screen with a presentation of the word completion candidate to which the suffix belongs.

11. A text input method as defined in claim 10, involving the further step, after said step of replacing a presentation, of removing the presented suffixes from presentation in said predetermined area.

12. A text input method as defined in claim 1, wherein all presented suffixes contain at least two characters.

13. A text input method as defined in claim 10, wherein said predetermined area only overlaps a predefined maximum part of the space bar, the maximum part being such that a sufficient area of the space bar is left available for convenient selection by said user.

14. A text input method as defined in claim 1, involving the step of selecting, among the set of word completion candidates derived by the word completion functionality, candidates to be included in said sub set for presentation in a way such that shorter suffixes are favored over longer suffixes, thereby allowing a larger number of suffixes to be presented in the predetermined area.

15. A text input method as defined in claim 4, wherein the existence of said third portion of said full word is indicated to said user by adding a visually recognizable indication to the presented second portion of said full word.

19. A computer program product comprising a memory configured to execute the method as defined in claim 1.

16. An electronic apparatus having a user interface with text input means and a display screen, and a controller coupled to said display screen, wherein said display screen is touch-sensitive and said text input means includes a virtual keyboard which is presentable on said touch-sensitive display screen, the user interface including word completion functionality for predicting word candidates for partial word inputs made by a user employing said text input means, the controller being adapted for performing the steps of:

receiving a partial word input from said user;

deriving a set of word completion candidates using said word completion functionality, each of the word completion candidates in said set having a prefix and a suffix, wherein the prefix corresponds to said partial word input; and

presenting the suffixes for at least a sub set of the word completion candidates in a predetermined area located within or at said virtual keyboard on said display screen, wherein each of the presented suffixes is made selectable for said user, and said step of receiving a partial word input from said user involving detecting successive actuations, by said user, of virtual keys of said virtual keyboard which accumulate into said partial word input, and said predetermined area is located entirely within a space bar included in said virtual keyboard wherein each of the presented suffixes is made selectable for said user.

17. An electronic apparatus as in claim 16, in the form of a pocket computer.

18. An electronic apparatus as in claim 16, in the form of a mobile terminal for a mobile telecommunications network.