TOUCH-CONTROLLED DEVICE AND METHOD FOR DISPLAYING A VIRTUAL KEYBOARD ON THE TOUCH-CONTROLLED DEVICE THEREOF

• US 20120131490A1
• Filed: 07/19/2011
• Published: 05/24/2012
• Est. Priority Date: 11/22/2010
• Status: Abandoned Application

• Current Assignee: Acer, Inc.
• Original Assignee: Acer, Inc.
• Inventors: Lin, Shao-Chieh, Lin, Chih-Hsiang, Dai, Han-Yu
• Application Number:
  US13/185,512
• Publication Number:
  US 20120131490A1
• Time in Patent Office: Days
• US Class Current: 715/773
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• 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 touch-controlled device includes a touch panel, a recognition module, and a control unit. The touch panel is arranged for generating a touch signal according to a plurality of blocks on the touch panel triggered by a gesture, and for displaying images. The recognition module is coupled to the touch panel, and is arranged for recognizing a designated type of the gesture according to the touch signal. The control unit is coupled to the touch panel and the recognition module, and is arranged for triggering and displaying a virtual keyboard on the touch panel according to the designated type.

Claims

1. A touch-controlled device, comprising:

a touch panel, arranged for generating a touch signal according to a plurality of blocks on the touch panel triggered by a gesture, and for displaying images;

a recognition module, coupled to the touch panel, arranged for recognizing a designated type of the gesture according to the touch signal; and

a control unit, coupled to the touch panel and the recognition module, arranged for triggering and displaying a virtual keyboard on the touch panel according to the designated type.

2. The touch-controlled device according to claim 1, wherein the recognition module comprises:

a detecting unit, arranged for detecting a plurality of shapes respectively corresponding to the plurality of blocks triggered by the gesture according to the touch signal, wherein each block is corresponding to a plurality of cells;

a determining unit, coupled to the detecting unit, arranged for determining the designated type of the gesture according to the plurality of shapes; and

an analyzing unit, coupled to the determining unit, arranged for generating at least one characteristic value according to the plurality of shapes and the designated type.

3. The touch-controlled device according to claim 2, wherein the determining unit is arranged for determining that the designated type of the gesture as a wrist type, a finger type, or a finger-and-wrist type according to the plurality of shapes, and the at least one characteristic value comprises at least one of an opening angle of a wrist, a left-right distance of the wrist, a gesture angle of the wrist related to the touch panel, a maximum width of the gesture, a maximum height of the gesture, and a center position of the gesture.

4. The touch-controlled device according to claim 3, wherein the determining unit is arranged for determining that the designated type of the gesture as the wrist type or the finger-and-wrist type according to a first ellipse and a second ellipse of the plurality of shapes;

the analyzing unit is arranged for calculating the opening angle of the wrist according to a first major axis of the first ellipse and a second major axis of the second ellipse;

the analyzing unit is arranged for calculating the left-right distance of the wrist according to a closest distance between the first ellipse and the second ellipse; and

the analyzing unit is arranged for calculating the gesture angle of the wrist related to the touch panel according to the first ellipse and the second ellipse.

5. The touch-controlled device according to claim 3, wherein when the determining unit determines that the designated type of the gesture as the finger type or the finger-and-wrist type according to a plurality of ellipses of the plurality of shapes, the analyzing unit is arranged for calculating a lest-most cell and a right-most cell of the gesture according to the plurality of ellipses in order to determine the maximum width of the gesture.

6. The touch-controlled device according to claim 3, wherein when the determining unit determines that the designated type of the gesture as the finger type or the finger-and-wrist type according to a plurality of ellipses of the plurality of shapes, the analyzing unit is arranged for calculating a topmost cell of the gesture according to the plurality of ellipses in order to determine the maximum height of the gesture.

7. The touch-controlled device according to claim 3, wherein when the determining unit determines that the designated type of the gesture as the finger type or the finger-and-wrist type according to a plurality of ellipses of the plurality of shapes, the analyzing unit is arranged for calculating a center cell of the gesture according to the plurality of ellipses in order to determine the center position of the gesture.

8. The touch-controlled device according to claim 2, wherein the control unit is further arranged for adjusting a display position of the virtual keyboard and a button size of the virtual keyboard according to the at least one characteristic value.

9. A method for displaying a virtual keyboard on a touch-controlled device, the touch-controlled device having a touch panel for displaying images, the method comprises the following steps:

generating a touch signal according to a plurality of blocks on the touch panel triggered by a gesture;

recognizing a designated type of the gesture according to the touch signal; and

triggering and displaying a virtual keyboard on the touch panel according to the designated type.

10. The method according to claim 9, wherein the step of recognizing the designated type of the gesture according to the touch signal comprises:

detecting a plurality of shapes respectively corresponding to the plurality of blocks triggered by the gesture according to the touch signal, wherein each block is corresponding to a plurality of cells;

determining the designated type of the gesture according to the plurality of shapes; and

generating at least one characteristic value according to the plurality of shapes and the designated type.

11. The method according to claim 10, wherein the designated type of the gesture comprises a wrist type, a finger type, or a finger-and-wrist type;

and the at least one characteristic value comprises at least one of an opening angle of a wrist, a left-right distance of the wrist, a gesture angle of the wrist related to the touch panel, a maximum width of the gesture, a maximum height of the gesture, and a center position of the gesture.

12. The method according to claim 11, wherein the step of determining the designated type of the gesture according to the plurality of shapes comprises:

determining that the designated type of the gesture as the wrist type or the finger-and-wrist type according to a first ellipse and a second ellipse of the plurality of shapes; and

the step of generating the at least one characteristic value according to the plurality of shapes and the designated type comprises;

calculating the opening angle of the wrist according to a first major axis of the first ellipse and a second major axis of the second ellipse.

13. The method according to claim 11, wherein the step of determining the designated type of the gesture according to the plurality of shapes comprises:

determining that the designated type of the gesture as the wrist type or the finger-and-wrist type according to a first ellipse and a second ellipse of the plurality of shapes; and

the step of generating the at least one characteristic value according to the plurality of shapes and the designated type comprises;

calculating the left-right distance of the wrist according to a closest distance between the first ellipse and the second ellipse.

14. The method according to claim 11, wherein the step of determining the designated type of the gesture according to the plurality of shapes comprises:

determining that the designated type of the gesture as the wrist type or the finger-and-wrist type according to a first ellipse and a second ellipse of the plurality of shapes; and

the step of generating the at least one characteristic value according to the plurality of shapes and the designated type comprises;

calculating the gesture angle of the wrist related to the touch panel according to the first ellipse and the second ellipse.

15. The method according to claim 11, wherein the step of determining the designated type of the gesture according to the plurality of shapes comprises:

determining that the designated type of the gesture as the finger type or the finger-and-wrist type according to a plurality of ellipses of the plurality of shapes; and

the step of generating the at least one characteristic value according to the plurality of shapes and the designated type comprises;

calculating a lest-most cell and a right-most cell of the gesture according to the plurality of ellipses in order to determine the maximum width of the gesture.

16. The method according to claim 11, wherein the step of determining the designated type of the gesture according to the plurality of shapes comprises:

determining that the designated type of the gesture as the finger type or the finger-and-wrist type according to a plurality of ellipses of the plurality of shapes; and

the step of generating the at least one characteristic value according to the plurality of shapes and the designated type comprises;

calculating a topmost cell of the gesture according to the plurality of ellipses in order to determine the maximum height of the gesture.

17. The method according to claim 11, wherein the step of determining the designated type of the gesture according to the plurality of shapes comprises:

determining that the designated type of the gesture as the finger type or the finger-and-wrist type according to a plurality of ellipses of the plurality of shapes; and

the step of generating the at least one characteristic value according to the plurality of shapes and the designated type comprises;

calculating a center cell of the gesture according to the plurality of ellipses in order to determine the center position of the gesture.

18. The method according to claim 10, wherein the step of triggering and displaying the virtual keyboard on the touch panel according to the designated type comprises:

adjusting a display position of the virtual keyboard and a button size of the virtual keyboard according to the at least one characteristic value.