CN101581764B - 按键检测电路 - Google Patents

按键检测电路 Download PDF

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Publication number
CN101581764B
CN101581764B CN200910142955XA CN200910142955A CN101581764B CN 101581764 B CN101581764 B CN 101581764B CN 200910142955X A CN200910142955X A CN 200910142955XA CN 200910142955 A CN200910142955 A CN 200910142955A CN 101581764 B CN101581764 B CN 101581764B
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CN
China
Prior art keywords
circuit
transistor
button
key
detecting circuit
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.)
Expired - Fee Related
Application number
CN200910142955XA
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English (en)
Chinese (zh)
Other versions
CN101581764A (zh
Inventor
廖志君
罗伯特·沃伦·施密特
孙爱华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomson Licensing SAS
International Digital Madison Patent Holding SAS
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Thomson Licensing SAS
Priority date (The priority date 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 date listed.)
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Publication date
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Publication of CN101581764A publication Critical patent/CN101581764A/zh
Application granted granted Critical
Publication of CN101581764B publication Critical patent/CN101581764B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/125—Discriminating pulses
    • H03K5/1252—Suppression or limitation of noise or interference
    • H03K5/1254—Suppression or limitation of noise or interference specially adapted for pulses generated by closure of switches, i.e. anti-bouncing devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
CN200910142955XA 2008-05-15 2009-05-15 按键检测电路 Expired - Fee Related CN101581764B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EAEP08305172.2 2008-05-15
EP08305172A EP2120338A1 (en) 2008-05-15 2008-05-15 Key press detecting circuit
EP08305172.2 2008-05-15

Publications (2)

Publication Number Publication Date
CN101581764A CN101581764A (zh) 2009-11-18
CN101581764B true CN101581764B (zh) 2013-11-06

Family

ID=39759851

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910142955XA Expired - Fee Related CN101581764B (zh) 2008-05-15 2009-05-15 按键检测电路

Country Status (6)

Country Link
US (1) US8138811B2 (enExample)
EP (2) EP2120338A1 (enExample)
JP (1) JP5710107B2 (enExample)
KR (1) KR101598559B1 (enExample)
CN (1) CN101581764B (enExample)
TW (1) TWI454893B (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102457256A (zh) * 2010-10-20 2012-05-16 鸿富锦精密工业（深圳）有限公司 复位信号延迟电路
CN102004559A (zh) * 2010-11-30 2011-04-06 汉王科技股份有限公司 使用按键输入信息的方法以及设置有按键的电子设备
CN102111467B (zh) * 2011-03-04 2014-07-30 惠州Tcl移动通信有限公司 一种手机及其按键检测装置
CN102111507B (zh) * 2011-03-21 2013-08-14 惠州Tcl移动通信有限公司 一种手机
TWI476647B (zh) 2011-09-02 2015-03-11 Pixart Imaging Inc 滑鼠裝置
KR101160681B1 (ko) 2011-10-19 2012-06-28 배경덕 이동 통신 단말기의 활성화 시에 특정 동작이 수행되도록 하기 위한 방법, 이동 통신 단말기 및 컴퓨터 판독 가능 기록 매체
EP2790369B1 (en) * 2011-12-08 2020-03-04 FUJI Corporation Multiplexed communication system, transmitting device and receiving device
CN102624370B (zh) * 2012-03-29 2014-11-05 广州市广晟微电子有限公司 一种实现电压检测的装置和方法
CN102857231B (zh) * 2012-06-26 2016-06-22 惠州市德赛西威汽车电子股份有限公司 一种按键检测电路
CN102866358B (zh) * 2012-08-03 2015-07-15 惠州市蓝微电子有限公司 高串数锂电池包电压检测电路及应用其的电池包保护电路
CN104251971A (zh) * 2013-06-28 2014-12-31 深圳富泰宏精密工业有限公司 按键检测电路
CN104124952B (zh) * 2014-07-22 2018-03-27 上海强邦电子有限公司 一种可识别按键电路
TWI540837B (zh) 2014-09-03 2016-07-01 原相科技股份有限公司 按鍵偵測電路
CN104965579B (zh) * 2015-07-24 2018-01-16 康泰医学系统（秦皇岛）股份有限公司 一种设备微处理器的长按键复位电路及其复合功能方法
CN107786209A (zh) * 2016-08-31 2018-03-09 厦门雅迅网络股份有限公司 一种按键检测电路和方法
CN109302188A (zh) * 2017-07-25 2019-02-01 厦门雅迅网络股份有限公司 一种电阻分压式的线控按键的检测方法和电路
CN108322223B (zh) * 2018-04-02 2024-02-09 延锋伟世通电子科技（上海）有限公司 一种带释放功能的状态保持电路
CN109038709B (zh) * 2018-07-12 2021-08-24 深圳拓邦股份有限公司 一种按键的识别电路、方法及搅拌机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2095015A (en) * 1981-03-13 1982-09-22 Int Standard Electric Corp Pulse shaping circuit
US5140178A (en) * 1990-07-13 1992-08-18 Pioneer Electronic Corporation Reset circuit for microcomputer
US5619169A (en) * 1994-09-30 1997-04-08 Ando Electric Co., Ltd. Variable gain differential amplifier
CN1304079A (zh) * 1999-12-14 2001-07-18 达方电子股份有限公司 一种按键扫描电路

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576485A (en) * 1969-05-05 1971-04-27 Gen Electric Fault detection circuit for the feedback of a control system
JPS61234118A (ja) * 1985-04-09 1986-10-18 Mitsubishi Electric Corp 波形整形回路
JPH0433127A (ja) * 1990-05-30 1992-02-04 Nec Corp チェックポイント制御方式
GB9106372D0 (en) * 1991-03-26 1991-05-15 Thomson Consumer Electronics Microcomputer reset circuit
JPH07182070A (ja) * 1993-12-22 1995-07-21 Omron Corp 制御機器
JP2001211060A (ja) * 2000-01-26 2001-08-03 Alps Electric Co Ltd スイッチ回路
US6816353B2 (en) * 2000-11-20 2004-11-09 General Electric Company Electronic actuation for mechanically held contactors
US7292418B2 (en) * 2004-04-27 2007-11-06 Microsoft Corporation Leakage current interrupter with sustained overvoltage and/or overcurrent protection
US7230548B2 (en) * 2004-09-28 2007-06-12 Broadcom Corporation Method and apparatus for high performance key detection with key debounce
KR100714037B1 (ko) * 2005-09-09 2007-05-04 디지털시스 주식회사 키 입력 검출장치
TW200838131A (en) * 2007-03-12 2008-09-16 Coretronic Corp Keypad module having light-indicating functionality and method for controlling the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2095015A (en) * 1981-03-13 1982-09-22 Int Standard Electric Corp Pulse shaping circuit
US5140178A (en) * 1990-07-13 1992-08-18 Pioneer Electronic Corporation Reset circuit for microcomputer
US5619169A (en) * 1994-09-30 1997-04-08 Ando Electric Co., Ltd. Variable gain differential amplifier
CN1304079A (zh) * 1999-12-14 2001-07-18 达方电子股份有限公司 一种按键扫描电路

Also Published As

Publication number Publication date
CN101581764A (zh) 2009-11-18
TW200947193A (en) 2009-11-16
KR101598559B1 (ko) 2016-02-29
EP2120338A1 (en) 2009-11-18
JP2009277229A (ja) 2009-11-26
US20090284301A1 (en) 2009-11-19
JP5710107B2 (ja) 2015-04-30
TWI454893B (zh) 2014-10-01
EP2120339B1 (en) 2018-10-03
EP2120339A2 (en) 2009-11-18
EP2120339A3 (en) 2010-12-08
US8138811B2 (en) 2012-03-20
KR20090119706A (ko) 2009-11-19

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Address after: I Si Eli Murli Nor, France

Patentee after: THOMSON LICENSING

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Effective date of registration: 20190128

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Patentee after: International Digital Madison Patent Holding Co.

Address before: I Si Eli Murli Nor, France

Patentee before: THOMSON LICENSING

Effective date of registration: 20190128

Address after: I Si Eli Murli Nor, France

Patentee after: THOMSON LICENSING

Address before: I Si Eli Murli Nor, France

Patentee before: THOMSON LICENSING

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131106