TOUCH METHOD AND TOUCH PROCESSOR

• US 20160266720A1
• Filed: 05/24/2016
• Published: 09/15/2016
• Est. Priority Date: 12/19/2011
• Status: Abandoned Application

• Current Assignee: eGalax_eMPIA Technology Inc.
• Original Assignee: eGalax_eMPIA Technology Inc.
• Inventors: CHANG, CHIN-FU
• Application Number:
  US15/163,174
• Publication Number:
  US 20160266720A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/0442 using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A touch processor and a touch method are disclosed. A hand rejection mode is executed if at least one stylus approaching/touching signal appears on a touch screen. At least one palm approaching/touching signal is not outputted if the at least one palm approaching/touching signal appears on the touch screen. The touch screen is kept in the hand rejection mode if the at least one stylus approaching/touching signal disappears while the at least one palm approaching/touching signal keeps existing.

Claims

1. A touch method, comprising:

executing a hand rejection mode if at least one stylus approaching/touching signal appears on a touch screen;

rejecting the output of at least one palm approaching/touching signal if the at least one palm approaching/touching signal appears on the touch screen; and

keeping the touch screen in the hand rejection mode if the at least one stylus approaching/touching signal disappears while the at least one palm approaching/touching signal keeps existing.

2. The touch method of claim 1, further comprising:

stopping the hand rejection mode if the at least one stylus approaching/touching signal and the at least one palm approaching/touching signal disappear.

3. The touch method of claim 1, wherein at least one touch stylus is approaching or touching the touch screen so as to generate the at least one stylus approaching/ touching signal, and at least one hand holding the at least one touch stylus is approaching or touching the touch screen so as to generate the at least one palm approaching/touching signal.

4. The touch method of claim 3, further comprising:

stopping the hand rejection mode if the at least one stylus approaching/touching signal disappears, but the at least one palm approaching/touching signal still exists, wherein the at least one palm approaching/touching signal is not generated by the at least one hand holding the at least one touch stylus.

5. The touch method of claim 1, wherein if the at least one stylus approaching/touching signal appears on the touch screen during a previous hand rejection mode, the previous hand rejection mode is kept executed until all stylus approaching/touching signals and palm approaching/touching signals disappear, wherein the previous hand rejection mode is executed according to a previous touch stylus approaching or touching the touch screen before the at least one stylus approaching/touching signal appears.

6. A touch processor, executing the following steps:

executing a hand rejection mode if at least one stylus approaching/touching signal appears on a touch screen;

rejecting the output of at least one palm approaching/touching signal if the at least one palm approaching/touching signal appears on the touch screen; and

keeping the touch screen in the hand rejection mode if the at least one stylus approaching/touching signal disappears while the at least one palm approaching/touching signal keeps existing.

7. The touch processor of claim 6, further executing the following step:

stopping the hand rejection mode if the at least one stylus approaching/touching signal and the at least one palm approaching/touching signal disappear.

8. The touch processor of claim 6, wherein at least one touch stylus is approaching or touching the touch screen so as to generate the at least one stylus approaching/ touching signal, and at least one hand holding the at least one touch stylus is approaching or touching the touch screen so as to generate the at least one palm approaching/touching signal.

9. The touch processor of claim 8, further comprising:

stopping the hand rejection mode if the at least one stylus approaching/touching signal disappears, but the at least one palm approaching/touching signal still exists, wherein the at least one palm approaching/touching signal is not generated by the at least one hand holding the at least one touch stylus.

10. The touch processor of claim 6, wherein if the at least one stylus approaching/touching signal appears on the touch screen during a previous hand rejection mode, the previous hand rejection mode is kept executed until all stylus approaching/touching signals and palm approaching/touching signals disappear, wherein the previous hand rejection mode is executed according to a previous touch stylus approaching or touching the touch screen before the at least one stylus approaching/touching signal appears.

11. A touch method, comprising:

executing a hand rejection mode to reject the output of any finger approaching/touching signal, appearing after at least one stylus approaching/touching signal appears, if the at least one stylus approaching/touching signal appears on a touch screen; and

outputting at least one finger approaching/touching track if at least one finger approaching/touching signal of the at least one finger approaching/touching track exists while the at least one stylus approaching/touching signal appears on the touch screen.

12. The touch method of claim 11, wherein if the at least one finger approaching/touching signal exists while the at least one stylus approaching/touching signal appears on the touch screen, the touch method further comprises:

determining whether the at least one finger approaching/touching track begins before the at least one stylus approaching/touching signal appears or not;

outputting the at least one finger approaching/touching track if the finger approaching/touching track begins before the at least one stylus approaching/touching signal appears; and

rejecting the output of the at least one finger approaching/touching track by the hand rejection mode if the finger approaching/touching track begins after the at least one stylus approaching/touching signal appears.

13. The touch method of claim 11, wherein at least one touch stylus is approaching or touching the touch screen so as to generate the at least one stylus approaching/touching signal.

14. The touch method of claim 11, wherein each finger approaching/touching track is a movement track of one single finger approaching or touching the touch screen.

15. The touch method of claim 14, wherein during the hand rejection mode, the at least one finger approaching/touching track is kept outputting until the corresponding finger leaves the touch screen.

16. A touch processor, executing the following steps:

executing a hand rejection mode to reject the output of any finger approaching/touching signal, appearing after at least one stylus approaching/touching signal appears, if the at least one stylus approaching/touching signal appears on a touch screen; and

outputting at least one finger approaching/touching track if at least one finger approaching/touching signal of the at least one finger approaching/touching track exists while the at least one stylus approaching/touching signal appears on the touch screen.

17. The touch processor of claim 16, wherein if the at least one finger approaching/touching signal exists while the at least one stylus approaching/touching signal appears on the touch screen, the touch processor further executes the following steps:

determining whether the at least one finger approaching/touching track begins before the at least one stylus approaching/touching signal appears or not;

outputting the at least one finger approaching/touching track if the finger approaching/touching track begins before the at least one stylus approaching/touching signal appears; and

rejecting the output of the at least one finger approaching/touching track by the hand rejection mode if the finger approaching/touching track begins after the at least one stylus approaching/touching signal appears.

18. The touch processor of claim 16, wherein at least one touch stylus is approaching or touching the touch screen so as to generate the at least one stylus approaching/touching signal.

19. The touch processor of claim 16, wherein each finger approaching/touching track is a movement track of one single finger approaching or touching the touch screen.

20. The touch processor of claim 19, wherein during the hand rejection mode, the at least one finger approaching/touching track is kept outputting until the corresponding finger leaves the touch screen.