WRITING STROKE RECOGNITION APPARATUS, MOBILE TERMINAL AND METHOD FOR REALIZING SPATIAL WRITING

• US 20110304534A1
• Filed: 08/25/2009
• Published: 12/15/2011
• Est. Priority Date: 06/10/2009
• Status: Abandoned Application

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Zhang, Junbiao
• Application Number:
  US13/203,601
• Publication Number:
  US 20110304534A1
• Time in Patent Office: Days
• US Class Current: 345/156
• CPC Class Codes: G06F 1/1694 the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer
• CPC Class Codes: G06F 2200/1637 Sensing arrangement for detection of housing movement or orientation, e.g. for controlling scrolling or cursor movement on the display of an handheld computer
• CPC Class Codes: G06F 3/0346 with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
• 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: G06V 30/333 Preprocessing; Feature extraction
• CPC Class Codes: G06V 40/37 based only on signature signals such as velocity or pressure, e.g. dynamic signature recognition

Abstract

A writing stroke recognition apparatus, a mobile terminal and a method for realizing spatial writing are provided. By acquiring and analyzing the writing movement amount information, the present invention utilizes the preset corresponding relationship between the movement amount information and stroke information, and the preset corresponding relationship between the movement amount information and the stroke relative position information, to obtain the writing stroke information and the writing relative position information. Further, the present invention recognizes the corresponding character by using the obtained writing stroke information and the writing relative position information.

Claims

1. A writing stroke recognition apparatus, comprising an acquiring module, a stroke recognition module, and a storage module configured to store a corresponding relationship between movement amount information and stroke information, wherein

the acquiring module is configured to acquire movement amount information of the movement of the writing stroke recognition apparatus per se, and output the movement amount information to the stroke recognition module;

and

the stroke recognition module is configured to obtain stroke information corresponding to the acquired movement amount information according to the corresponding relationship stored in the storage module.

2. The writing stroke recognition apparatus according to claim 1, wherein the storage module is further configured to store corresponding relationship between the movement amount information and stroke relative position information;

the writing stroke recognition apparatus further comprises a selection module and a stroke relative position recognition module, wherein

the selection module is configured to output the movement amount information from the acquiring module to the stroke recognition module or the stroke relative position recognition module, according to different control information; and

the stroke relative position recognition module is configured to obtain stroke relative position information corresponding to the acquired movement amount information, according to the corresponding relationships stored in the storage module.

3. The writing stroke recognition apparatus according to claim 1, wherein the acquiring module is an acceleration sensor.

4. The writing stroke recognition apparatus according to claim 3, wherein the acceleration sensor is a triaxial acceleration sensor or a biaxial acceleration sensor.

5. The writing stroke recognition apparatus according to claim 2, wherein the selection module is a key-press, wherein pressing or releasing the key-press indicates different control information.

14. The writing stroke recognition apparatus according to claim 2, wherein the acquiring module is an acceleration sensor.

15. The writing stroke recognition apparatus according to claim 14, wherein the acceleration sensor is a triaxial acceleration sensor or a biaxial acceleration sensor.

6. A mobile terminal, at least comprising a writing stroke recognition apparatus and a character recognition unit, wherein

the writing stroke recognition apparatus comprises an acquiring module, a stroke recognition module, and a storage module configured to store a corresponding relationship between movement amount information and stroke information, wherein

the acquiring module is configured to acquire movement amount information of the movement of the writing stroke recognition apparatus per se, and output the movement amount information to the stroke recognition module;

the stroke recognition module is configured to obtain stroke information corresponding to the acquired movement amount information according to the corresponding relationships stored in the storage module; and

the character recognition unit is configured to make transformation and obtain a corresponding character according to the stroke information received.

7. The mobile terminal according to claim 6, wherein the storage module is further configured to store corresponding relationship between the movement amount information and stroke relative position information;

the writing stroke recognition apparatus further comprises a selection module and a stroke relative position recognition module, wherein

the selection module is configured to output the movement amount information from the acquiring module to the stroke recognition module or the stroke relative position recognition module, according to different control information;

the stroke relative position recognition module is configured to obtain stroke relative position information corresponding to the acquired movement amount information according to the corresponding relationships stored in the storage module; and

the character recognition unit is further configured to make transformation and obtain the corresponding character according to the stroke relative position information received.

8. The mobile terminal according to claim 6, wherein the acquiring module is an acceleration sensor.

9. The mobile terminal according to claim 8, wherein the acceleration sensor is placed at edges and corners of the mobile terminal.

10. The mobile terminal according to claim 7, wherein the selection module is a key-press, wherein pressing or releasing the key-press indicates different control information.

16. The mobile terminal according to claim 7, wherein the acquiring module is an acceleration sensor.

17. The mobile terminal according to claim 16, wherein the acceleration sensor is placed at edges and corners of the mobile terminal.

11. A method for realizing spatial writing, presetting a corresponding relationship between movement amount information and stroke information, and the method further comprising:

obtaining movement amount information of a mobile terminal, and then obtaining stroke information according to the preset corresponding relationship and the obtained movement amount information; and

performing character recognition using the obtained stroke information.

12. The method according to claim 11, wherein the preset corresponding relationship further comprises corresponding relationship between the movement amount information and stroke relative position information, and the method further comprises:

obtaining stroke relative position information according to the preset corresponding relationship and the obtained movement amount information; and

further performing character recognition using the obtained stroke relative position information.

13. The method according to claim 11, wherein the movement amount information represents the variation of an acceleration value within a period of time.

18. The method according to claim 12, wherein the movement amount information represents the variation of an acceleration value within a period of time.