SYSTEM AND METHOD FOR IMPROVING RECOGNITION OF A TOUCH KEYBOARD OF AN ELECTRONIC DEVICE

• US 20120249434A1
• Filed: 06/24/2011
• Published: 10/04/2012
• Est. Priority Date: 04/01/2011
• Status: Active Grant

• Current Assignee: FIH (Hong Kong) Limited (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Chi Mei Communication Systems Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Inventors: YU, YI-CHUN
• Granted Patent: US 8,896,551 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• 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

Abstract

A system and a method for improving recognition of a touch keyboard in an electronic device include setting a fuzzy set corresponding to each virtual key of the touch keyboard displayed on a touch panel. The improving method further includes receiving coordinates of a touch point on the touch panel, confirming a touched virtual key corresponding to the touched coordinates and executing a function of the touched virtual key. The improving method further confirming one or more adjacent virtual keys of the touched virtual key, and revising a fuzzy set of the received virtual key or a fuzzy set of an adjacent virtual key, if a backspace virtual key and the adjacent virtual key have been touched in turn after the touched virtual key.

Claims

1. An electronic device, comprising:

a storage system;

a touch panel;

at least one processor;

one or more programs that are stored in the storage system and are executed by the at least one processor, the one or more programs comprising;

a definition module operable to define and store a fuzzy set corresponding to each virtual key of a touch keyboard displayed on the touch panel;

a receiving module operable to receive coordinates of a touch point on the touch panel;

a confirmation module operable to confirm a virtual key corresponding to the received coordinates according to fuzzy sets of virtual keys of the touch keyboard, determine the virtual key as a touched virtual key and the received coordinates as touched coordinates;

a processing module operable to execute a function corresponding to the touched virtual key on the virtual keyboard;

the confirmation module further operable to confirm one or more adjacent virtual keys of the touched virtual key, after the function of the touched virtual key is executed;

the processing module further operable to revise a fuzzy set of the touched virtual key or a fuzzy set of one of the adjacent virtual keys, upon the condition that a backspace virtual key of the touch keyboard and the adjacent virtual key have been touched in turn after the touched virtual key.

2. The electronic device as claimed in claim 1, wherein the one or more programs further comprises a determination module operable to determine whether inputs of the virtual keys have been finished.

3. The electronic device as claimed in claim 1, wherein the fuzzy set corresponding to each virtual key defines a plurality of membership functions of each virtual key, each of the membership functions correspond to an x interval and a y interval of a coordinate system based on the touch panel.

4. The electronic device as claimed in claim 3, wherein a number of non-zero membership function value corresponding to received coordinates of one touch point is one or two, the confirmation module confirms the virtual key by confirming the membership function value from the plurality of the fuzzy sets according to the received coordinates, under the condition that the number is one, or confirms the virtual key by confirming a larger membership function value in the two membership function values, under the condition that the number is two.

5. The electronic device as claimed in claim 4, wherein the one or more adjacent virtual keys of the touched virtual key have an intersection on x intervals with the touched virtual key.

6. The electronic device as claimed in claim 5, wherein the processing module revises the fuzzy sets by:

validating the number of the non-zero membership function value corresponding to the touched coordinates;

maintaining the fuzzy set of the touched virtual key and the fuzzy set of the adjacent virtual key, upon the condition that the number of the non-zero membership function value corresponding to touched coordinates is one;

or

confirming whether the maximum membership function value is equal to “

1”

, upon the condition that the number of the non-zero membership function value corresponding to touched coordinates is two;

calculating a new membership function of the touched virtual key according to the touched coordinates, in response to that the maximum membership function value is equal to “

1”

;

or

calculating a new membership function of the adjacent virtual key according to the touched coordinates, in response to that the maximum membership function value is not equal to “

1”

; and

calculating new intervals in the fuzzy set of the touched virtual key, or new intervals in the fuzzy set of the adjacent virtual key;

updating the fuzzy set of the touched virtual key or the fuzzy set of the adjacent virtual key according to the new membership and the new intervals.

7. A method for improving recognition of a touch keyboard in an electronic device, the electronic device comprising a storage system, a touch panel and at least one processor, the method comprising:

defining and storing a fuzzy set corresponding to each virtual key of a touch keyboard displayed on the touch panel;

receiving coordinates of a touch point on the touch panel;

confirming a virtual key corresponding to the received coordinates according to fuzzy sets of virtual keys of the touch keyboard, determining the virtual key as a touched virtual key and the received coordinates as touched coordinates;

executing a function corresponding to the touched virtual key on the virtual keyboard;

confirming one or more adjacent virtual keys of the touched virtual key, after the function of the touched virtual key is executed;

revising a fuzzy set of the touched virtual key or a fuzzy set of one of the adjacent virtual keys, upon the condition that a backspace virtual key and the adjacent virtual key have been touched in turn after the touched virtual key.

8. The method as claimed in claim 7, further comprising:

determining whether inputs of the virtual keys have been finished.

9. The method as claimed in claim 7, wherein the fuzzy set corresponding to each virtual key defines a plurality of membership functions of each virtual key, each of the membership functions correspond to an x interval and a y interval of a coordinate system based on the touch panel.

10. The method as claimed in claim 9, wherein a number of non-zero membership function value corresponding to received coordinates of one touch point is one or two, and confirming the virtual key by the membership function value from the plurality of the fuzzy sets according to the received coordinates, under the condition that the number is one;

or confirming the virtual key by the larger membership function value in the two membership function values, under the condition that the number is two.

11. The method as claimed in claim 10, wherein the one or more adjacent virtual keys of the touched virtual key have an intersection on x intervals with the touched virtual key.

12. The method as claimed in claim 11, wherein the fuzzy sets are revises by:

validating the number of the non-zero membership function value corresponding to the touched coordinates;

maintaining the fuzzy set of the touched virtual key and the fuzzy set of the adjacent virtual key, upon the condition that the number of the non-zero membership function value corresponding to touched coordinates is one;

or

confirming whether the maximum membership function value is equal to “

1”

, upon the condition that the number of the non-zero membership function value corresponding to touched coordinates is two;

calculating a new membership function of the touched virtual key according to the touched coordinates, in response to that the maximum membership function value is equal to “

1”

;

or

calculating a new membership function of the adjacent virtual key according to the touched coordinates, in response to that the maximum membership function value is not equal to “

1”

; and

calculating new intervals in the fuzzy set of the touched virtual key, or new intervals in the fuzzy set of the adjacent virtual key;

updating the fuzzy set of the touched virtual key or the fuzzy set of the adjacent virtual key according to the new membership and the new intervals.

13. A storage medium storing a set of instructions, the set of instructions capable of executed by a processor to perform a method for improving recognition of a touch keyboard in an electronic device, the method comprising:

defining and storing a fuzzy set corresponding to each virtual key of the touch keyboard displayed on a touch panel of the electronic device;

receiving coordinates of a touch point on the touch panel;

confirming a virtual key corresponding to the received coordinates according to fuzzy sets of virtual keys of the touch keyboard, determining the virtual key as a touched virtual key and the received coordinates as touched coordinates;

executing a function corresponding to the touched virtual key on the virtual keyboard;

confirming one or more adjacent virtual keys of the touched virtual key, after the function of the touched virtual key is executed;

revising a fuzzy set of the touched virtual key or a fuzzy set of one of the adjacent virtual keys, upon the condition that a backspace virtual key and the adjacent virtual key have been touched in turn after the touched virtual key.

14. The storage medium as claimed in claim 13, further comprising:

determining whether inputs of the virtual keys have been finished.

15. The storage medium as claimed in claim 13, wherein the fuzzy set corresponding to each virtual key defines a plurality of membership functions of each virtual key, each of the membership functions correspond to an x interval and a y interval of a coordinate system based on the touch panel.

16. The storage medium as claimed in claim 15, wherein a number of non-zero membership function value corresponding to received coordinates of one touch point is one or two;

confirming the virtual key by the membership function value from the plurality of the fuzzy sets according to the received coordinates, under the condition that the number is one;

or confirming the virtual key by the larger membership function value in the two membership function values, under the condition that the number is two.

17. The storage medium as claimed in claim 16, wherein the one or more adjacent virtual keys of the touched virtual key have an intersection on x intervals with the touched virtual key.

18. The storage medium as claimed in claim 17, wherein the fuzzy sets are revises by:

validating the number of the non-zero membership function value corresponding to the touched coordinates;

maintaining the fuzzy set of the touched virtual key and the fuzzy set of the adjacent virtual key, upon the condition that the number of the non-zero membership function value corresponding to touched coordinates is one;

or

confirming whether the maximum membership function value is equal to “

1”

, upon the condition that the number of the non-zero membership function value corresponding to touched coordinates is two;

calculating a new membership function of the touched virtual key according to the touched coordinates, in response to that the maximum membership function value is equal to “

1”

;

or

calculating a new membership function of the adjacent virtual key according to the touched coordinates, in response to that the maximum membership function value is not equal to “

1”

; and

calculating new intervals in the fuzzy set of the touched virtual key, or new intervals in the fuzzy set of the adjacent virtual key;

updating the fuzzy set of the touched virtual key or the fuzzy set of the adjacent virtual key according to the new membership and the new intervals.