Method for Adjusting Touch Positions of Software Keyboard, Non-Transitory Computer Readable Storage Medium for Storing Thereof and Touch Screen Electrical Device Applying Thereof

• US 20120154298A1
• Filed: 04/04/2011
• Published: 06/21/2012
• Est. Priority Date: 12/15/2010
• Status: Abandoned Application

• Current Assignee: Institute For Information Industry
• Original Assignee: Institute For Information Industry
• Inventors: Wu, Cheng-Han, Liao, Chung-Wen, Chen, Wen-Tang, Yang, Chao-Chi
• Application Number:
  US13/079,111
• Publication Number:
  US 20120154298A1
• 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 method for adjusting touch positions of software keyboard includes the following steps: a software keyboard is displayed on the touch screen. The preset characters are displayed respectively to receive at least one first touched position corresponding to each of the preset characters on the touch screen. A touched offset corresponding to each of the preset characters is calculated according to the at least one first touched position corresponding to each of the preset characters respectively. At least one touched boundary among each of the preset characters and the neighboring characters thereof is calculated according to the touched offset and the preset base center point corresponding to each of the preset characters respectively. A preset close-loop scope corresponding to each of the preset characters is calculated according to the touched boundaries respectively. Output characters according to the close-loop scopes touched.

Claims

1. A method for adjusting touch positions of software keyboard applying to an electrical device with a touch screen, wherein the method for adjusting touch positions of software keyboard comprises:

displaying a software keyboard on the touch screen, wherein the software keyboard comprises a plurality of keys, a plurality of displayed boundaries are displayed among the keys, each of the keys corresponds to a preset character respectively, each of the preset characters corresponds to a preset base center point on the touch screen respectively;

displaying the preset characters respectively to receive at least one first touched position corresponding to each of the preset characters on the touch screen;

calculating a touched offset corresponding to each of the preset characters according to the at least one first touched position corresponding to each of the preset characters respectively;

calculating at least one touched boundary among each of the preset characters and the neighboring characters thereof according to the touched offset and the preset base center point corresponding to each of the preset characters respectively;

calculating a preset close-loop scope corresponding to each of the preset characters according to the touched boundaries respectively;

receiving a second touched position on the touch screen;

identifying a corresponding character, whose corresponding close-loop scope is occupied by the second touched position; and

outputting the corresponding character.

2. The method for adjusting touch positions of software keyboard of claim 1 further comprising:

determining whether the second touched position is in one of the preset close-loop scopes or not; and

if the second touched position is not in one of the preset close-loop scopes, outputting a nearest character, a nearest base center point corresponding to which is nearest to the second touched position among the preset base center points.

3. The method for adjusting touch positions of software keyboard of claim 1, wherein each of the touched offset comprises a first axis offset and a second axis offset, the method for adjusting touch positions of software keyboard further comprises:

calculating at least one first-axis distance from the preset base center point to the at least one first touched position corresponding to each of the preset characters along the first axis respectively, and calculating average of the at least one first-axis distance to be taken as the first axis offset corresponding to each of the preset characters respectively;

calculating at least one second-axis distance from the preset base center point to the at least one first touched position corresponding to each of the preset characters along the second axis respectively, and calculating average of the at least one second-axis distance to be taken as the second axis offset corresponding to each of the preset characters respectively;

calculating a first deviated boundary according to the first axis offset and the preset base center point corresponding to each of the preset characters; and

calculating a second deviated boundary according to the second axis offset and the preset base center point corresponding to each of the preset characters, wherein the at least one touched boundary among each of the preset characters and the neighboring characters thereof comprises the first deviated boundary and the second deviated boundary corresponding to each of the preset characters.

4. The method for adjusting touch positions of software keyboard of claim 3 further comprising:

adding the first axis offset to value of the preset base center point corresponding to each of the preset characters along the first axis to obtain a first deviated center point corresponding to each of the preset characters;

adding the second axis offset to value of the preset base center point corresponding to each of the preset characters along the second axis to obtain a second deviated center point corresponding to each of the preset characters;

calculating a first median between each of the first deviated center point corresponding to each of the preset characters and the first deviated center point corresponding to the neighboring characters thereof; and

calculating a second median between each of the second deviated center point corresponding to each of the preset characters and the second deviated center point corresponding to the neighboring characters thereof, wherein the at least one touched boundary between each of the preset characters and the neighboring characters thereof comprises the first median and the second median.

5. The method for adjusting touch positions of software keyboard of claim 1 further comprising:

determining whether there is at least one deviated touched position, distance from which to the corresponding preset base center point is more than an offset limit, among the at least one first touched position corresponding to each of the preset characters or not; and

if there is the at least one deviated touched position, removing the deviated touched position before calculating the touched offset.

6. The method for adjusting touch positions of software keyboard of claim 1, wherein each of the preset close-loop scopes corresponding to each of the preset characters comprises a plurality of Bazier Curves.

7. The method for adjusting touch positions of software keyboard of claim 1, wherein each of the preset close-loop scopes corresponding to each of the preset characters comprises a plurality of curves, each of the curves touches at least one of the touched boundaries at just one point.

8. A non-transitory computer readable storage medium with a computer program to execute a method for adjusting touch positions of software keyboard applying to an electrical device with a touch screen, wherein the method for adjusting touch positions of software keyboard comprises:

displaying a software keyboard on the touch screen, wherein the software keyboard comprises a plurality of keys, a plurality of displayed boundary are displayed among the keys, each of the keys corresponding to a preset character respectively, each of the preset characters corresponds to a preset base center point on the touch screen respectively;

displaying the preset characters respectively to receive at least one first touched position corresponding to each of the preset characters on the touch screen;

calculating a touched offset corresponding to each of the preset characters according to the at least one first touched position corresponding to each of the preset characters respectively;

calculating at least one touched boundary among each of the preset characters and the neighboring characters thereof according to the touched offset and the preset base center point corresponding to each of the preset characters respectively;

calculating a preset close-loop scope corresponding to each of the preset characters according to the touched boundaries respectively;

receiving a second touched position on the touch screen;

identifying a corresponding character, whose corresponding close-loop scope is occupied by the second touched position; and

outputting the corresponding character.

9. A touch screen electrical device comprising:

a touch screen for displaying a software keyboard, wherein the software keyboard comprises a plurality of keys, a plurality of displayed boundaries are displayed among the keys;

a storage unit for storing a preset character corresponding to each of the keys respectively and for storing a preset base center point on the touch screen corresponding to each of the preset characters respectively; and

a processing unit electrically connected to the touch screen and the storage unit, wherein the processing unit comprises;

a boundary setting module for displaying the preset characters respectively to receive at least one first touched position corresponding to each of the preset characters on the touch screen;

an offset calculating module for calculating a touched offset corresponding to each of the preset characters according to the at least one first touched position corresponding to each of the preset characters respectively;

a boundary calculating module for calculating at least one touched boundary among each of the preset characters and the neighboring characters thereof according to the touched offset and the preset base center point corresponding to each of the preset characters respectively;

a curve calculating module for calculating a preset close-loop scope corresponding to each of the preset characters according to the touched boundaries respectively; and

an output module for identifying and outputting a corresponding character, whose corresponding close-loop scope is occupied by the second touched position, when a second touched position on the touch screen is received, wherein the corresponding close-loop scope is one of the preset close-loop scopes.

10. The touch screen electrical device of claim 9, wherein the output module further comprises:

a boundary determiner for determining whether the second touched position is in one of the preset close-loop scopes or not,

wherein if the second touched position is not in one of the preset close-loop scopes, the output module outputs a nearest character, a nearest base center point corresponding to which is nearest to the second touched position among the preset base center points.

11. The touch screen electrical device of claim 9, wherein number of the at least one touched boundary between each of the preset characters and the neighboring characters thereof is more than one, each of the touched offset comprises a first axis offset and a second axis offset, the offset calculating module comprises:

a first offset calculator for calculating at least one first-axis distance from the preset base center point to the at least one first touched position corresponding to each of the preset characters along the first axis respectively, and calculating average of the at least one first-axis distance to be taken as the first axis offset corresponding to each of the preset characters respectively; and

a second offset calculator for calculating at least one second-axis distance from the preset base center point to the at least one first touched position corresponding to each of the preset characters along the second axis respectively, and calculating average of the at least one second-axis distance to be taken as the second axis offset corresponding to each of the preset characters respectively,

wherein the boundary calculating module calculates a first deviated boundary according to the first axis offset and the preset base center point corresponding to each of the preset characters,

wherein the boundary calculating module calculates a second deviated boundary according to the second axis offset and the preset base center point corresponding to each of the preset characters,

wherein the touched boundaries between each of the preset characters and the neighboring characters thereof comprises the first deviated boundary and the second deviated boundary corresponding to each of the preset characters.

12. The touch screen electrical device of claim 11, wherein the boundary calculating module comprises:

a first deviated point calculator for adding the first axis offset to value of the preset base center point corresponding to each of the preset characters along the first axis to obtain a first deviated center point corresponding to each of the preset characters;

a second deviated point calculator for adding the second axis offset to value of the preset base center point corresponding to each of the preset characters along the second axis to obtain a second deviated center point corresponding to each of the preset characters; and

a median calculator for calculating a first median between each of the first deviated center point corresponding to each of the preset characters and the first deviated center point corresponding to the neighboring characters thereof, and for calculating a second median between each of the second deviated center point corresponding to each of the preset characters and the second deviated center point corresponding to the neighboring characters thereof,

wherein the at least one touched boundary between each of the preset characters and the neighboring characters thereof comprises the first median and the second median.

13. The touch screen electrical device of claim 9, wherein the offset calculating module comprises:

a deviation determiner for determining whether there is at least one deviated touched position, distance from which to the corresponding preset base center point is more than an offset limit, among the at least one first touched position corresponding to each of the preset characters or not; and

if there is the at least one deviated touched position, the offset calculating module removes the deviated touched position before calculating the touched offset.