Method and system for reducing current noise of touch terminal

Patent metadata

Field	Value
Publication number	US-11025764-B2
Application number	US-201916358728-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Dec 19, 2018
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A method and a system for reducing current noise of a touch terminal are provided. The method includes: determining that a user receives a voice call via an earpiece of the touch terminal, and controlling the touch terminal to switch from a first touch scan frequency to a second touch scan frequency, where the second touch scan frequency is less than the first touch scan frequency. As can be seen, if the user receives the voice call via the earpiece of the touch terminal, the touch terminal is controlled to switch from the first touch scan frequency to the second touch scan frequency, to effectively reduce the current noise heard by the user by decreasing the touch scan frequency of the touch terminal, so that the periodic current noise is outside a frequency band perceptible to a human ear, thereby improving user experience when receiving the voice call.

First claim

The invention claimed is:

1. A system for reducing current noise of a touch terminal, comprising:
a reception device configured to determine whether a user receives a voice call via an earpiece of a touch terminal; and
a switching device configured to control, if it is determined that the user receives the voice call via the earpiece of the touch terminal, the touch terminal to switch from a first touch scan frequency to a second touch scan frequency, wherein the second touch scan frequency is less than the first touch scan frequency,
wherein the reception device comprises:
a second connection device configured to determine that the user receives the voice call, and
a second detection and determination device configured to: determine whether the user turns on a speaker of the touch terminal; and determine, that the user receives the voice call via the earpiece of the touch terminal in a case that the user does not turn on the speaker of the touch terminal.

2. The system for reducing current noise of a touch terminal according to claim 1 , wherein the switching device comprises:
a first acquisition device configured to acquire a first switching signal indicating that the user receives the voice call via the earpiece of the touch terminal, and
a first selection device configured to select, in response to the first switching signal, the second touch scan frequency, to control the touch terminal to switch from the first touch scan frequency to the second touch scan frequency.

3. The system for reducing current noise of a touch terminal according to claim 1 , wherein the switching device comprises:
a second acquisition device configured to acquire a first switching signal indicating that the user receives the voice call via the earpiece of the touch terminal, and
a second selection device configured to control, in response to the first switching signal, the touch terminal to stop touch scan performed at the first touch scan frequency.

4. The system for reducing current noise of a touch terminal according to claim 1 , wherein the reception device comprises:
a first connection device configured to determine that the user receives the voice call, and
a first detection and determination device configured to: detect a distance between the user and the touch terminal, and determine that the user receives the voice call via the earpiece of the touch terminal if it is determined that the distance between the user and the touch terminal is less than a preset distance.

5. The system for reducing current noise of a touch terminal according to claim 1 , further comprising:
a third detection and determination device configured to determine that the user is distant from the touch terminal by determining that a distance between the user and the touch terminal is greater than a preset distance during reception of the voice call by the user via the earpiece of the touch terminal; and
a restoration device configured to restore the touch terminal to the first touch scan frequency.

6. The system for reducing current noise of a touch terminal according to claim 5 , wherein the restoration device comprises:
an acquisition sub-device configured to acquire a second switching signal indicating that the user is distant from the touch terminal, and
a selection sub-device configured to select, in response to the second switching signal, the first touch scan frequency, to control the touch terminal to switch from the second touch scan frequency to the first touch scan frequency.

Assignees

• Shanghai Avic Opto Electronics Co Ltd

Inventors

• Huang Zhengyuan
• Yang Xu
• Wang Xupeng
• Zheng Zhi
• Liu Changchao

Classifications

• H04M1/72484

  wherein functions are triggered by incoming communication events · CPC title

• H04M1/72454

  according to context-related or environment-related conditions · CPC title

• G06F3/011

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• H04M2250/22

  including a touch pad, a touch sensor or a touch detector · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title