Method for False Touch Prevention and Terminal

Patent metadata

Field	Value
Publication number	US-2019258380-A1
Application number	US-201716343305-A
Country	US
Kind code	A1
Filing date	Sep 22, 2017
Priority date	Nov 3, 2016
Publication date	Aug 22, 2019
Grant date	—

Abstract

A method and a terminal for false touch prevention. The method includes determining a type of a touch operation performed on a touchscreen by a user, correcting a false touch point in a doubtful touch operation based on an occurrence process of a screen point touch event in the doubtful touch operation and a preset determining policy when the touch operation is a doubtful touch operation, and reporting the corrected false touch point.

First claim

1 . A method for false touch prevention, wherein the method is applied to a terminal with a touchscreen, and wherein the method comprises:
determining a type of a touch operation performed on the touchscreen by a user; when the touch operation is a doubtful touch operation, generating a corrected false touch point by correcting a false touch point in the doubtful touch operation based on a preset determining policy and an occurrence process of a screen point touch event in the doubtful touch operation; and reporting the corrected false touch point.

2 . The method of claim 1 , further comprising:
shielding the touch operation without performing a process in response to determining that the touch operation is a false touch operation; executing an application corresponding to the touch operation in response to the determining that the touch operation is a useful touch operation.

3 . The method of claim 1 , wherein the screen point touch event comprises one of a down event or at least one move event, wherein correcting the false touch point in the doubtful touch operation and reporting the corrected false touch point comprises:
obtaining the down event in the screen point touch event; determining that a start touch point corresponding to the down event is an edge touch point; determining that the start touch point is the false touch point in response to the determining that the start touch point corresponding to the down event is the edge touch point; obtaining any one of the at least one move event in the screen point touch event; determining that a distance between an intermediate touch point corresponding to the at least one move event and the start touch point is greater than a first distance threshold; determining that the start touch point is not the false touch point, based on the determining that the distance is greater than the first distance threshold; and reporting the start touch point, the intermediate touch point, and a shielded intermediate touch point before the intermediate touch point.

4 . The method of claim 3 , wherein the screen point touch event further comprises an up event, and wherein the method further comprises:
obtaining the up event in the screen point touch event; determining whether an occurrence time difference between an end touch point corresponding to the up event and the start touch point is less than a first time threshold in response to the determining that, the start touch point is the false touch point; determining that the start touch point is not the false touch point, in response to the determining that the occurrence time difference is less than the first time threshold; and reporting the start touch point and the end touch point.

5 . The method of claim 1 , wherein the screen point touch event comprises one of a down event or at least one move event, and wherein correcting the false touch point in the doubtful touch operation and reporting the corrected false touch point comprises:
obtaining the down event in the screen point touch event; determining that a start touch point corresponding to the down event is a diagonal thenar touch point; determining that the start touch point is the false touch point in response to the determining that the start touch point corresponding to the down event is the diagonal thenar touch point; obtaining any one of the at least one move event in the screen point touch event; querying whether an auxiliary touch point exists on the touchscreen within an occurrence time from the start touch point to a first intermediate touch point corresponding to the at least one move event; determining that the start touch point is not the false touch point, and reporting the start touch point, the first intermediate touch point, and a shielded intermediate touch point before the first intermediate touch point in response to not obtaining, the auxiliary touch point; determining that a distance of a first tangent side between the first intermediate touch point and the start touch point is greater than a first tangent side distance threshold and that a distance of a second tangent side between the first intermediate touch point and the start touch point is greater than a second tangent side distance threshold in response to obtaining the auxiliary touch point; determining that the start touch point is not the false touch point, and reporting the start touch point, the first intermediate touch point, and the shielded intermediate touch point before the first intermediate touch point in response to the determining that the distance of the first tangent side is greater than the first tangent side distance threshold and that the distance of the second tangent side is greater than the second tangent side distance threshold; determining whether an average value of a length of the first tangent side of the first intermediate touch point and a length of a first tangent side of a second intermediate touch point before the first intermediate touch point is greater than a tangent side length threshold in response to the determining that the distance of the first tangent side is less than or equal to the first tangent side distance threshold and that the distance of the second tangent side is less than or equal to the second tangent side distance threshold; determining that the start touch point is the false touch point in response to the determining that the average value is greater than the tangent side length threshold; and determining that the start touch point is not the false touch point, and reporting the start touch point, the first intermediate touch point, and the shielded intermediate touch point before the first intermediate touch point in response to the determining that the average value is less than or equal to the tangent side length threshold.

6 . The method of claim 5 , wherein the screen point touch event further comprises an up event, and wherein the method further comprises:
obtaining the up event in the screen point touch event; determining whether an occurrence time difference between an end touch point corresponding to the up event and the start touch point is less than a second time threshold in response to the determining that the start touch point is the false touch point; and determining that the start touch point is not the false touch point, and reporting the start touch point and the end touch point in response to the determining that the occurrence time difference is less than the second time threshold.

7 . The method of claim 1 , wherein the screen point touch event comprises one of a down event or at least one move event, and wherein correcting the false touch point in the doubtful touch operation and reporting the corrected false touch point comprises:
obtaining the down event in the screen point touch event; determining a start touch point corresponding to the down event is a thenar touch point; determining that the start touch point is the false touch point in response to the determining that the start touch point corresponding to the down event is the thenar touch point; obtaining any one of the at least one move event in the screen point touch event; determining whether an intermediate touch point corresponding to the at least one move event is the thenar touch point; determining whether the intermediate touch point is a suspicious thenar touch point in response to the determining that the intermediate touch point is not the thenar touch point; determining that the start touch point is not the false touch point in response to the determining that the intermediate touch point is not the suspicious thenar touch point; and reporting the start touch point, the intermediate touch point, and a shielded intermediate touch point before the intermediate touch poi

Assignees

• Huawei Tech Co Ltd

Inventors

• Chen Hao
• Tong Bifeng
• Chen Xiaoxiao
• Jiang Minghui
• Guo Jianbo
• Xu Jie
• Zheng Aihua

Classifications

• G06F3/0488

  using a touch-screen or digitiser, e.g. input of commands through traced gestures · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0418 Primary

  for error correction or compensation, e.g. based on parallax, calibration or alignment · CPC title

• G06F3/04186 Primary

  Touch location disambiguation · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title