CN110832448A - 噪声检测电路、方法及检测电路 - Google Patents

噪声检测电路、方法及检测电路 Download PDF

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Publication number
CN110832448A
CN110832448A CN201880000944.5A CN201880000944A CN110832448A CN 110832448 A CN110832448 A CN 110832448A CN 201880000944 A CN201880000944 A CN 201880000944A CN 110832448 A CN110832448 A CN 110832448A
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CN
China
Prior art keywords
signal
frequency
quadrature
phase
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201880000944.5A
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English (en)
Inventor
文亚南
梁颖思
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology Co Ltd
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Application filed by Shenzhen Goodix Technology Co Ltd filed Critical Shenzhen Goodix Technology Co Ltd
Publication of CN110832448A publication Critical patent/CN110832448A/zh
Pending legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04182—Filtering of noise external to the device and not generated by digitiser components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance

Abstract

本申请提供了一种噪声检测电路(1)，包括：混波模块(12)，用来对一整合信号进行对应于多个频率的混波运算，以产生多个同相信号及多个正交信号；计算模块(14)，其中当触控系统利用第一频率进行触控检测时，所述计算模块对第一同相信号以及第一正交信号进行一信号消除运算，以计算并输出对应于所述第一频率的一第一输出信号；以及判断模块(16)，用来从所述多个输出信号选取一最佳输出信号，并输出一最佳频率。

Description

PCT国内申请，说明书已公开。

Claims (22)

  1. PCT国内申请，权利要求书已公开。
CN201880000944.5A 2018-06-13 2018-06-13 噪声检测电路、方法及检测电路 Pending CN110832448A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/091146 WO2019237290A1 (zh) 2018-06-13 2018-06-13 噪声检测电路、方法及检测电路

Publications (1)

Publication Number Publication Date
CN110832448A true CN110832448A (zh) 2020-02-21

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CN201880000944.5A Pending CN110832448A (zh) 2018-06-13 2018-06-13 噪声检测电路、方法及检测电路

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US (1) US11003281B2 (zh)
EP (1) EP3614243A4 (zh)
CN (1) CN110832448A (zh)
WO (1) WO2019237290A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019080026A1 (zh) * 2017-10-26 2019-05-02 深圳市汇顶科技股份有限公司 非正交解调模块、触控系统及非正交解调方法

Citations (3)

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JP2000258481A (ja) * 1999-03-04 2000-09-22 Sankyo Seiki Mfg Co Ltd ノイズマージンの自己診断装置
JP2005143137A (ja) * 1997-01-31 2005-06-02 Matsushita Electric Ind Co Ltd 直交周波数分割多重信号復調装置及び直交周波数分割多重信号復調方法
US20170262092A1 (en) * 2016-03-10 2017-09-14 Pixart Imaging Inc. Capacitive touch system using frequency division multiplexing and operating method thereof

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US8493331B2 (en) * 2007-06-13 2013-07-23 Apple Inc. Touch detection using multiple simultaneous frequencies
US9036650B2 (en) * 2009-09-11 2015-05-19 Apple Inc. Automatic low noise frequency selection
US8693967B2 (en) * 2011-03-28 2014-04-08 Mediatek Inc. Receiver capable of concurrently collecting dual band signals, and method thereof
US9372581B2 (en) * 2012-01-09 2016-06-21 Broadcom Corporation Interference estimation and adaptive reconfiguration of a capacitive touch controller
CN104731424B (zh) * 2013-11-08 2018-09-28 禾瑞亚科技股份有限公司 侦测近接于触控装置的发信器的方法、装置、与系统
US9606670B2 (en) * 2014-09-30 2017-03-28 Synaptics Incorporated Real-time spectral noise monitoring for proximity sensing device
TWI559202B (zh) * 2014-10-01 2016-11-21 義隆電子股份有限公司 電容式觸控裝置及其刺激訊號產生電路與方法
US9389742B2 (en) * 2014-12-10 2016-07-12 Pixart Imaging Inc. Capacitive touch device, capacitive communication device and communication system
US20170139536A1 (en) * 2015-11-13 2017-05-18 Pixart Imaging Inc. Fdm based capacitive touch system and operating method thereof
CN106775141B (zh) * 2015-12-30 2019-09-27 深圳市汇顶科技股份有限公司 电容感测电路及触控面板
US9991848B1 (en) * 2017-03-07 2018-06-05 International Business Machines Corporation Octagonal phase rotators
US10705667B2 (en) * 2017-08-02 2020-07-07 Tactual Labs Co. Phase shift and phase shift assisted sensing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005143137A (ja) * 1997-01-31 2005-06-02 Matsushita Electric Ind Co Ltd 直交周波数分割多重信号復調装置及び直交周波数分割多重信号復調方法
JP2000258481A (ja) * 1999-03-04 2000-09-22 Sankyo Seiki Mfg Co Ltd ノイズマージンの自己診断装置
US20170262092A1 (en) * 2016-03-10 2017-09-14 Pixart Imaging Inc. Capacitive touch system using frequency division multiplexing and operating method thereof

Also Published As

Publication number Publication date
US11003281B2 (en) 2021-05-11
EP3614243A4 (en) 2020-05-20
EP3614243A1 (en) 2020-02-26
WO2019237290A1 (zh) 2019-12-19
US20190384477A1 (en) 2019-12-19

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