CN109074202A - 电容检测电路及电子装置 - Google Patents

电容检测电路及电子装置 Download PDF

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Publication number
CN109074202A
CN109074202A CN201780000179.2A CN201780000179A CN109074202A CN 109074202 A CN109074202 A CN 109074202A CN 201780000179 A CN201780000179 A CN 201780000179A CN 109074202 A CN109074202 A CN 109074202A
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China
Prior art keywords
signal
smear
coupled
circuit
time
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Granted
Application number
CN201780000179.2A
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English (en)
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CN109074202B (zh
Inventor
杨富强
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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Publication of CN109074202A publication Critical patent/CN109074202A/zh
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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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0442—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • 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

Abstract

一种电容检测电路(20)，应用于一电子装置，所述电子装置包括一触控屏，所述触控屏包括多个接收电极(ETD)，所述电容检测电路(20)包括一相位侦测电路(22)，用来侦测一接收信号(RX)的一相位，并产生一时间信号(tm)，其中所述接收电极(ETD)接收一传送信号(TX)并产生所述接收信号(RX)；一混频模块(24)，用来根据所述时间信号(tm)对所述接收信号(RX)进行一混频操作，产生一输出信号(Vo_INT)；以及一后端处理模块(26)，用来根据所述输出信号(Vo_INT)，判断对应于所述接收电极(ETD)的一电容；其中，所述时间信号(tm)指示所述混频模块(24)于一第一时间后，对所述接收信号(RX)进行所述混频操作。

Description

PCT国内申请，说明书已公开。

Claims (18)

  1. PCT国内申请，权利要求书已公开。
CN201780000179.2A 2017-03-14 2017-03-14 电容检测电路及电子装置 Active CN109074202B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/076667 WO2018165870A1 (zh) 2017-03-14 2017-03-14 电容检测电路及电子装置

Publications (2)

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CN109074202A true CN109074202A (zh) 2018-12-21
CN109074202B CN109074202B (zh) 2021-11-02

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US (1) US10642412B2 (zh)
EP (1) EP3416033A4 (zh)
CN (1) CN109074202B (zh)
WO (1) WO2018165870A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113884763A (zh) * 2021-09-30 2022-01-04 深圳市汇顶科技股份有限公司 检波电路及相关电子装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110061948A1 (en) * 2009-09-11 2011-03-17 Christoph Horst Krah Touch Controller with Improved Diagnostics Calibration and Communications Support
US20120327000A1 (en) * 2011-06-21 2012-12-27 Oh Do-Hwan Mixer for use in touch panel system and method for preocessing signals in the mixer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101840220B1 (ko) * 2011-10-10 2018-03-21 삼성디스플레이 주식회사 터치 표시 패널의 구동 방법 및 이에 적합한 터치 표시 장치
CN103207711B (zh) * 2012-01-13 2015-01-07 深圳市汇春科技有限公司 自电容触摸检测电路及方法
CN103323675B (zh) * 2012-03-23 2014-08-20 深圳市汇春科技有限公司 电容触摸检测电路及方法
KR102087830B1 (ko) * 2013-11-01 2020-04-14 엘지디스플레이 주식회사 터치 센싱 시스템과 그 구동 방법
US9760205B2 (en) * 2015-04-30 2017-09-12 Synaptics Incorporated Interference mitigation in a capacitive sensing device
CN106775142B (zh) * 2015-12-31 2019-10-01 深圳市汇顶科技股份有限公司 电容感测电路
CN106462309B (zh) * 2016-09-27 2019-12-17 深圳市汇顶科技股份有限公司 电容感测电路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110061948A1 (en) * 2009-09-11 2011-03-17 Christoph Horst Krah Touch Controller with Improved Diagnostics Calibration and Communications Support
US20120327000A1 (en) * 2011-06-21 2012-12-27 Oh Do-Hwan Mixer for use in touch panel system and method for preocessing signals in the mixer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113884763A (zh) * 2021-09-30 2022-01-04 深圳市汇顶科技股份有限公司 检波电路及相关电子装置

Also Published As

Publication number Publication date
US10642412B2 (en) 2020-05-05
US20190018536A1 (en) 2019-01-17
WO2018165870A1 (zh) 2018-09-20
CN109074202B (zh) 2021-11-02
EP3416033A4 (en) 2019-04-10
EP3416033A1 (en) 2018-12-19

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