System to allow the selection of alternative letters in handwriting recognition systems

• US 7,490,041 B2
• Filed: 07/15/2003
• Issued: 02/10/2009
• Est. Priority Date: 07/15/2003
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Davis, Scott
• Primary Examiner(s): Han; Qi
• Application Number:
  US10/621,007
• Publication Number:
  US 20050015250A1
• Time in Patent Office: 2,037 Days
• Field of Search: 704/270, 704/3, 704/270.1, 382/186, 382/187, 379/908
• US Class Current: 704/270
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G06V 30/1423 the instrument generating sequences of position coordinates corresponding to handwriting preprocessing or recognising digital ink G06V30/32
• CPC Class Codes: G10L 15/24 Speech recognition using non-acoustical features
• CPC Class Codes: G10L 2015/228 of application context
• CPC Class Codes: Y10S 379/908 Multimedia

Abstract

A system and/or method that provides a virtual alpha-numeric keyboard based at least in part upon a user real-time input entry within a portable computing device. An input component receives an input providing a recognition component to determine and/or infer possible input entries (e.g., virtual keys). Once possible input entries are determined and/or inferred, a rendering component concurrently displays the virtual keys during the input entry.

Claims

1. A recognition system comprising:

an input component configured to receive a first portion of an analog user input to be recognized;

a recognition component configured to analyze the first portion of the analog user input and identify a first subset of virtual keys of a plurality of available virtual keys to concurrently convey to a user during the analog user input; and

a rendering component configured to display the first subset of virtual keys to the user concurrently with receiving the first portion of the analog user input,

wherein the input component is configured to receive a second portion of the analog user input,

wherein the recognition component is configured to analyze the second portion of the analog user input and eliminate at least one virtual key from the first subset of virtual keys to produce a second subset of virtual keys to concurrently convey to the user during the analog user input, and

wherein the rendering component is configured to display the second subset of virtual keys to the user concurrently with receiving the second portion of the analog user input.

2. The recognition system of claim 1, wherein the analog user input being handwriting.

3. The recognition system of claim 1, further comprising a data store having stored thereon a plurality of user profiles that the recognition component employs in connection with the analysis.

4. The system of claim 1, the recognition component utilizing an artificial intelligence component providing inference of possible real-time input entry.

5. The system of claim 4, further comprising a trained classifier.

6. The system of claim 4, the artificial intelligence component contemplating and/or accounting for quality-deterioration of the real-time input.

7. The system. of claim 4, the recognition component utilizing a starting point of the real-time input entry for determination and/or inference.

8. The system of claim 4, the recognition component utilizing an ending point of the real-time input entry for determination and/or inference.

9. The system of claim 1, displaying N virtual keys, N being an integer, and N being a function of confidence associated with the analysis.

10. The system of claim 9, the virtual keys being dynamically determined and/or inferred.

11. A portable communications device comprising the system of claim 1.

12. A portable computing device comprising the system of claim 1.

13. The system of claim 1, the recognition component concurrently analyzing handwriting and voice input.

14. The system of claim 13, the hand-writing and voice input are part of a single user input.

15. A method, comprising:

receiving a first portion of an analog user input;

analyzing the first portion of the analog user input,

determining a first subset of virtual keys to display to a user;

displaying the first subset of virtual keys concurrently with receiving the first portion of the analog user input,

receiving a second portion of the analog user input,

analyzing the second portion of the analog user input,

determining a second subset of virtual keys by eliminating at least one virtual key from the first subset of virtual keys to produce a second subset of virtual keys, and

displaying the second subset of virtual keys concurrently with receiving the second portion of the analog user input.

16. The method of claim 15, the user input being handwriting.

17. A method of claim 15, the determination being dynamic, and the first subset being modified as a function of temporally receiving the user input.

18. A computer readable medium having stored thereon computer executable instructions for carrying out the method of claim 15.

19. A recognition system, comprising:

means for receiving a first portion of an analog user input;

means for analyzing the first portion of the analog user input, and determining a first subset of virtual keys to display to a user;

means for displaying the first subset of virtual keys concurrently with receiving the first portion of the analog user input;

means for receiving a second portion of the analog user input,

means for analyzing the second portion of the analog user input,

means for determining a second subset of virtual keys by eliminating at least one virtual key from the first subset of virtual keys to produce a second subset of virtual keys, and

means for displaying the second subset of virtual keys concurrently with receiving the second portion of the analog user input.