Touch control device and operating method thereof

• US 10,088,943 B2
• Filed: 06/24/2016
• Issued: 10/02/2018
• Est. Priority Date: 06/30/2015
• Status: Active Grant

• Current Assignee: ASUSTek Computer, Inc.
• Original Assignee: ASUSTek Computer, Inc.
• Inventors: Chen, Ya-Ting, Lin, Hung-Yi, Wang, Yi-Ou
• Primary Examiner(s): Merkoulova, Olga
• Application Number:
  US15/191,538
• Publication Number:
  US 20170003805A1
• Time in Patent Office: 830 Days
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A touch control device including a touchpad, a first driving circuit and a system circuit is provided. The first driving circuit is coupled to the touchpad for driving the touchpad to detect a sensed value frame of a touch event on the touchpad. The system circuit is coupled to the first driving circuit for analyzing the sensed value frame provided by the first driving circuit to recognize a first finger position, a second finger position and a third finger position, and defining the first finger position as a left key position of a virtual mouse, the second finger position as a right key position of the virtual mouse according to a position relationship among the first finger position, the second finger position and the third finger position. An operating method of a touch control device is also provided.

Claims

1. A touch control device comprising:

a touchpad;

a first driving circuit coupled to the touchpad, configured to drive the touchpad to detect a sensed value frame of a touch event on the touchpad; and

a system circuit coupled to the first driving circuit, configured to analyze the sensed value frame provided by the first driving circuit to recognize a first finger position, a second finger position and a third finger position, and to define the first finger position as a left key position of a virtual mouse, the second finger position as a right key position of the virtual mouse according to a position relationship among the first finger position, the second finger position and the third finger position,

wherein as the left key position and the right key position having been detected to move forward or backward simultaneously, the system circuit triggers a rolling of a mouse wheel of the virtual mouse.

2. The touch control device according to claim 1, wherein the system circuit recognizes a palm position from the sensed value frame and defines the palm position as the position of the virtual mouse;

when the system circuit analyzes the sensed value frame and determines that the palm position and the finger positions from the sensed value frame move together toward a similar vector, the system circuit triggers a cursor movement event.

3. The touch control device according to claim 1, when the recognized first finger position and second finger position in a first period do not have the sensed value frame in a second period, the system circuit determines that the first finger position and the second finger position are in an up state in the second period;

when the system circuit analyzes the sensed value frame and determines that the first finger position and the second finger position are in the up state, the third finger position remains in a down state

and the third finger position moves toward a similar vector, the system circuit triggers a cursor movement event.

4. The touch control device according to claim 1, when the recognized second finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the second finger position is in an up state in the second period;

when the system circuit analyzes the sensed value frame and determines that the first finger position and the third finger position are in a down state, and the second finger position changes from the down state to an up state and further back to the down state, or from the down state, an up state, the down state, and to the up state in sequence, the system circuit triggers a mouse right-click event.

5. The touch control device according to claim 1, when the recognized first finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the first finger position in the second period is in an up state;

when the system circuit analyzes the sensed value frame and determines that the second finger position and the third finger position are in a down state, and the first finger position changes from the down state to the up state and further back to the down state, or from the down state, the up state, the down state and to the up state in sequence, the system circuit triggers a mouse left-click event.

6. The touch control device according to claim 1, the recognized first finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the first finger position is in an up state in the second period;

when the system circuit analyzes the sensed value frame and determines that the second finger position and the third finger position are in a down state, and the first finger position changes from the down state, the up state, the down state, the up state and to the down state in sequence, or from the down state, the up state, the down state, the up state, the down state and to the up state, the system circuit triggers a mouse left double click event.

7. The touch control device according to claim 1, when the recognized first finger position in a first period does not have the sensed value frame in a second period, the system circuit determines the first finger position in the second period is in an up state;

when the system circuit analyzes the sensed value frame and determines that the second finger position and the third finger position are in a down state, and the first finger position changes from the down state to the up state and further back to the down state, and the first finger position, the second finger position and the third finger position move toward a similar vector together, the system circuit triggers a drag event.

8. The touch control device according to claim 1, further comprising:

a first detector disposed at a first side of the touchpad; and

a second driving circuit coupled to the first detector and the system circuit, configured to drive the first detector to detect a touch event on the first detector;

wherein when the system circuit detects the touch event on the first detector via the second driving circuit, the system circuit ignores a touch event on a corresponding area of the touchpad corresponding to the first detector.

9. The touch control device according to claim 8, further comprising:

a second detector disposed at a second side of the touchpad; and

a third driving circuit coupled to the second detector and the system circuit, configured to drive the second detector to detect a touch event of the second detector;

wherein when the system circuit detects the touch event on the second detector via the third driving circuit, the system circuit considers the position of the second detector as a palm position.

10. An operating method of a touch control device comprising:

providing a touchpad;

driving the touchpad by a first driving circuit to detect a sensed value frame of a touch event on the touchpad;

analyzing the sensed value frame by a system circuit to recognize a first finger position, a second finger position and a third finger position;

defining the first finger position as a left key position of a virtual mouse and defining the second finger position as a right key position of the virtual mouse by the system circuit according to a position relationship among the first finger position, the second finger position and the third finger position; and

triggers a rolling of a mouse wheel of the virtual mouse by the system circuit as the left key position and the right key position having been detected to move forward or backward simultaneously.

11. The operating method of the touch control device according to claim 10, wherein the system circuit recognizes a palm position from the sensed value frame and defines the palm position as the position of the virtual mouse, the operating method further comprises:

triggering a cursor movement event by the system circuit when the system circuit analyzes the sensed value frame and determines that the palm position and the finger position from the sensed value frame move toward a similar vector together.

12. The operating method of the touch control device according to claim 10, wherein when the recognized first finger position and the second finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the first finger position and the second finger position in the second period are in an up state, the operating method further comprises:

triggering a cursor movement event by the system circuit when the system circuit analyzes the sensed value frame and determines that the first finger position and the second finger position are in the up state, the third finger position is in a down state, and the third finger position move toward the similar vector.

13. The operating method of the touch control device according to claim 10, wherein when the recognized second finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the second finger position in the second period is in an up state, the operating method further comprises:

triggering a mouse right-click event by the system circuit when the system circuit analyzes the sensed value frame and determines that the first finger position and the third finger position are in a down state, and the second finger position changes from the down state to the up state and further back to the down state or the second finger position changes from the down state, the up state, the down state and to the up state in sequence.

14. The operating method of the touch control device according to claim 10, wherein when the recognized first finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the first finger position in the second period is in an up state, and the operating method further comprises:

triggering a mouse left-click event by the system circuit when the system circuit analyzes the sensed value frame and determines that the second finger position and the third finger position are in a down state, and the first finger position changes from the down state to the up state and further back to the down state.

15. The operating method of the touch control device according to claim 10, wherein when the recognized first finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the first finger position in the second period is in an up state, the operating method further comprises:

triggering a mouse left-click event by the system circuit when the system circuit analyzes the sensed value frame and determines that the second finger position and the third finger position are in a down state, and the first finger position changes from the down state, the up state, the down state and to the up state in sequence.

16. The operating method of the touch control device according to claim 10, wherein when the recognized first finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the first finger position in the second period is in an up state, the operating method further comprises:

triggering an event of a left double click of the mouse by the system circuit when the system circuit analyzes the sensed value frame and determines that the second finger position and the third finger position are in a down state, and the first finger position changes from the down state, the up state, the down state, the up state and to the down state in sequence.

17. The operating method of the touch control device according to claim 10, wherein when the recognized first finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the first finger position in the second period is in an up state, the operating method further comprises:

triggering an event of a left double click of the mouse by the system circuit when the system circuit analyzes the sensed value frame and determines that the second finger position and the third finger position are in a down state, and the first finger position changes from the down state, the up state, the down state, the up state, the down state and to the up state in sequence.

18. The operating method of the touch control device according to claim 10, wherein when the recognized first finger position in a first period does not have the sensed value frame in a second period, the system circuit determines that the first finger position in the second period is in an up state, the operating method further comprises:

triggering a drag event according to a similar vector by the system circuit when the system circuit analyzes the sensed value frame and determines the second finger position and the third finger position are in a down state, and the first finger position changes from the down state to the up state and further back to the down state, and the first finger position, the second finger position and the third finger position move together toward the similar vector.

19. The operating method of the touch control device according to claim 10, further comprising:

disposing a first detector at a first side of the touchpad;

driving the first detector by a second driving circuit to detect a touch event on the first detector; and

ignoring a touch event on a corresponding area of the touchpad corresponding to the first detector when the touch event on the first detector is detected.

20. The operating method of the touch control device according to claim 19, further comprising:

disposing a second detector at a second side of the touchpad;

driving a second detector by a third driving circuit to detect a touch event on the second detector; and

considering the position of the second detector as a palm position when the touch event is detected on the second detector.