Reduced keyboard letter selection system and method

• US 7,224,292 B2
• Filed: 04/29/2004
• Issued: 05/29/2007
• Est. Priority Date: 04/29/2004
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Lazaridis, Mihal, Griffin, Jason T.
• Primary Examiner(s): Edwards, Jr.; Timothy
• Application Number:
  US10/835,118
• Publication Number:
  US 20050242972A1
• Time in Patent Office: 1,125 Days
• Field of Search: 341/22, 341/28, 379/93.18, 379/93.27, 345/168, 400/98
• US Class Current: 341/22
• CPC Class Codes: G06F 3/0236 using selection techniques to select from displayed items
• CPC Class Codes: H03K 2217/96031 Combination of touch switch and LC display

Abstract

A system and method of selecting a letter for display in a communication device having a display and a reduced-key keyboard is provided. One of the plurality of keys on the reduced-key keyboard is selected and a default letter associated with the selected key is displayed. A backspace key is selected to display a cursor in the position of the default letter on the display. The key associated with the default letter is selected again and an alternate letter associated with the selected key is displayed in place of the default letter.

Claims

1. A method of selecting a letter for display in a communication device having a display and a reduced-key keyboard, the method comprising the steps of:

selecting one of the plurality of keys on the reduced-key keyboard and displaying a default letter associated with the selected key;

selecting a backspace key and displaying a cursor in the position of the default letter on the display; and

selecting the one of the plurality of keys again and displaying an alternate letter associated with the selected key.

2. The method of claim 1, further comprising the steps of:

selecting the backspace key again to position the cursor in the position of the alternate letter on the display; and

selecting the one of the plurality of keys again and displaying a different alternate letter associated with the selected key.

3. The method of claim 1, further comprising the step of:

deleting the default letter when the backspace key is selected.

4. The method of claim 1, wherein the reduced-key keyboard is a QWERTY keyboard.

5. The method of claim 4, wherein the QWERTY keyboard comprises 14 letter keys, the 14 letter keys including 26 letter indicia.

6. The method of claim 5, wherein the 14 letter keys are organized into three rows of letter keys, a first row comprising 5 letter keys, a second row comprising 5 letter keys and a third row comprising 4 letter keys.

7. The method of claim 6, wherein the backspace key is positioned in the third row of letter keys.

8. The method of claim 7, wherein the QWERTY keyboard further comprises a space bar key positioned below the third row of letter keys.

9. The method of claim 8, wherein the QWERTY keyboard further comprises a numeric phone pad overlaid and centered on the three rows of letter keys.

10. The method of claim 1, wherein the reduced-key keyboard is a touch-tone phone pad.

11. The method of claim 1, wherein the alternate letter is selected from a plurality of alternate letters associated with the one of the plurality of keys.

12. The method of claim 1, wherein the alternate letter is selected by accessing a database of probable words to determine the most likely word being typed by a user of the communication device.

13. A mobile communication device comprising:

a user interface including a display and a reduced-key keyboard having a plurality of input keys of which at least one is a multi-letter key associated with a plurality of letters;

a processing subsystem comprising operating system software that controls operation of the mobile communication device; and

said operating system software is programmed to display a default letter associated with a selected multi-letter key upon a first actuation thereof and to display a cursor in the position of the default letter on the display when a backspace key of the keyboard is subsequently actuated and to then display an alternate letter associated with the selected multi-letter key upon a second actuation thereof.

14. The mobile communication device as recited in claim 13, wherein said mobile communication device is a wireless mobile communication device including data and voice communication functionalities.

15. The mobile communication device as recited in claim 13, wherein said mobile communication device is a wireless mobile communication device including personal information management functionalities.

16. The mobile communication device as recited in claim 13, wherein said operating system software is further programmed to position the cursor in the position of the alternate letter on the display when the backspace key is again actuated and to display a different alternate letter associated with the selected multi-letter key upon a third actuation thereof.

17. The mobile communication device as recited in claim 13, wherein said operating system software is further programmed to delete a displayed letter if the backspace key is successively twice actuated.

18. The mobile communication device as recited in claim 13, wherein the reduced-key keyboard is a QWERTY keyboard.

19. The mobile communication device as recited in claim 18, wherein the QWERTY keyboard comprises 14 letter keys, the 14 letter keys including 26 letter indicia.

20. The mobile communication device as recited in claim 19, wherein the 14 letter keys are organized into three rows of letter keys, a first row comprising 5 letter keys, a second row comprising 5 letter keys and a third row comprising 4 letter keys.

21. The mobile communication device as recited in claim 20, wherein the backspace key is positioned in the third row of letter keys.

22. The mobile communication device as recited in claim 21, wherein the QWERTY keyboard further comprises a space bar key positioned below the third row of letter keys.

23. The mobile communication device as recited in claim 22, wherein the QWERTY keyboard further comprises a numeric phone pad overlaid and centered on the three rows of letter keys.

24. The mobile communication device as recited in claim 13, wherein the reduced-key keyboard is a touch-tone phone pad.

25. The mobile communication device as recited in claim 13, wherein the alternate letter is selected from a plurality of alternate letters associated with the selected multi-letter key.

26. The mobile communication device as recited in claim 13, wherein the alternate letter is selected by accessing a database of probable words to determine the most likely word being typed by a user of the mobile communication device.

27. A processing subsystem configured to be installed in a mobile communication device comprising a user interface including a display and a reduced-key keyboard having a plurality of input keys of which at least one is a multi-letter key associated with a plurality of letters, said processing subsystem comprising:

operating system software that controls operation of an incorporating mobile communication device and said operating system software is programmed to display a default letter associated with a selected multi-letter key upon a first actuation thereof and to display a cursor in the position of the default letter on the display when a backspace key of the keyboard is subsequently actuated and to then display an alternate letter associated with the selected multi-letter key upon a second actuation thereof.