Touch Panel and Quick Scrolling Method Thereof

• US 20100110034A1
• Filed: 11/02/2009
• Published: 05/06/2010
• Est. Priority Date: 11/06/2008
• Status: Abandoned Application

• Current Assignee: Darfon Electronics Corporation
• Original Assignee: Darfon Electronics Corporation
• Inventors: Teng, Chao-Ching
• Application Number:
  US12/610,449
• Publication Number:
  US 20100110034A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0485 Scrolling or panning
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A touch panel and a quick scrolling method thereof are disclosed. The quick scrolling method includes the steps stated below. Firstly, a first location of an object at a fist moment of time is detected by a touch panel. Next, a second location of the object at a second moment of time is detected by the touch panel. Then, a moving speed of the object is calculated according to a time difference between the fist moment and the second moment of time and a distance between the first location and the second location. After that, the moving speed is compared to a threshold value, and if the moving speed is greater than the threshold value, then a scroll of a display window will be moved fast.

Claims

1. A quick scrolling method, comprising:

detecting a first location of an object at a fist moment of time by a touch panel;

detecting a second location of the object at a second moment of time;

calculating a moving speed of the object according to a time difference between the fist moment of time and the second moment of time and a distance between the first location and the second location; and

comparing the moving speed to a threshold value, and moving a scroll of a display window fast if the moving speed is greater than the threshold value.

2. The method according to claim 1, further comprising:

keeping moving the scroll of the display window fast when the object stays at the second location.

3. The method according to claim 2, further comprising:

halting the movement of the scroll of the display window when the object leaves the touch panel from the second location after having stayed at the second location for a period of time.

4. The method according to claim 1, further comprising:

keeping moving the scroll of the display window fast when the object leaves the touch panel from the second location.

5. The method according to claim 4, further comprising:

halting the movement of the scroll of the display window when the touch panel detects the object again after the object has left the touch panel.

6. The method according to claim 1, further comprising:

determining a moving direction of the scroll of the display window according to the relationship between the first location and the second location so as to.

7. The method according to claim 6, wherein the moving direction of the scroll is downward, upward, leftward or rightward.

8. A touch panel, comprising:

a panel body having at least one scrolling area;

a plurality of sensing elements disposed on the at least one scrolling area of the panel body for detecting a location of an object, wherein, the sensing elements detect a first location of the object at a fist moment of time and detect a second location of the object at a second moment of time;

a register unit having a plurality of register areas in which the data comprising the fist moment of time, the second moment of time, the first location and the second location are temporarily storied

a calculation unit for calculating a time difference between the fist moment of time and the second moment of time and a distance between the first location and the second location to further calculate a moving speed of the object;

a comparison unit for comparing the moving speed to a threshold value; and

a processing unit for generating a fast moving signal so as to move a scroll of a display window fast if the comparison unit determines that the moving speed is greater than the threshold value.

9. The touch panel according to claim 8, wherein, the arrangement of the sensing elements is linear.

10. The touch panel according to claim 8, wherein, each of the sensing elements is a capacitor element.

11. The touch panel according to claim 8, wherein, the at least one scrolling area is located at an edge of the panel body.

12. The touch panel according to claim 8, wherein, the panel body has two scrolling areas respectively adjacent to two edges of the panel body which are mutually perpendicular to each other.

13. The touch panel according to claim 8, wherein, the processing unit continues to generate the fast moving signal to keep moving the scroll of the display window fast when the object stays at the second location.

14. The touch panel according to claim 13, wherein, the processing unit further halts the movement of the scroll of the display window when the sensing elements detect that the object leaves the touch panel from the second location after having stayed at the second location for a period of time.

15. The touch panel according to claim 8, wherein, the processing unit continues to generate the fast moving signal to keep moving the scroll of the display window fast when the object leaves the touch panel from the second location.

16. The touch panel according to claim 15, wherein, after the object leaves the touch panel, the processing unit stops generating the fast moving signal so as to halt the movement of the scroll of the display window when the sensing elements again detect the object.

17. The touch panel according to claim 8, wherein, the processing unit determines a moving direction of the scroll of the display window according to the relationship between the first location and the second location.

18. The touch panel according to claim 17, wherein, the moving direction of the scroll is downward, upward, leftward or rightward.