TWI454893B - 按鍵檢測電路 - Google Patents

按鍵檢測電路 Download PDF

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Publication number
TWI454893B
TWI454893B TW098114302A TW98114302A TWI454893B TW I454893 B TWI454893 B TW I454893B TW 098114302 A TW098114302 A TW 098114302A TW 98114302 A TW98114302 A TW 98114302A TW I454893 B TWI454893 B TW I454893B
Authority
TW
Taiwan
Prior art keywords
key
circuit
transistor
function
scan
Prior art date
Application number
TW098114302A
Other languages
English (en)
Chinese (zh)
Other versions
TW200947193A (en
Inventor
Zhi Jun Liao
Robert Warren Schmidt
Ai Hua Sun
Original Assignee
Thomson Licensing
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.)
Filing date
Publication date
Application filed by Thomson Licensing filed Critical Thomson Licensing
Publication of TW200947193A publication Critical patent/TW200947193A/zh
Application granted granted Critical
Publication of TWI454893B publication Critical patent/TWI454893B/zh

Links

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)
TW098114302A 2008-05-15 2009-04-30 按鍵檢測電路 TWI454893B (zh)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
TW200947193A TW200947193A (en) 2009-11-16
TWI454893B true TWI454893B (zh) 2014-10-01

Family

ID=39759851

Family Applications (1)

Application Number Title Priority Date Filing Date
TW098114302A TWI454893B (zh) 2008-05-15 2009-04-30 按鍵檢測電路

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 (2)

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Publication number Priority date Publication date Assignee Title
US20050237680A1 (en) * 2004-04-27 2005-10-27 Microsoft Corporation Leakage current interrupter with sustained overvoltage and/or overcurrent protection
TW200636542A (en) * 2004-09-28 2006-10-16 Broadcom Corp Method and apparatus for high performance key detection with key debounce

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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
FR2501938B1 (fr) * 1981-03-13 1985-06-21 Constr Telephoniques Circuit conformateur de signaux
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
JPH0433127U (enExample) 1990-07-13 1992-03-18
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
JPH08102628A (ja) * 1994-09-30 1996-04-16 Ando Electric Co Ltd 差動増幅回路
CN1109290C (zh) * 1999-12-14 2003-05-21 达方电子股份有限公司 一种按键扫描电路
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
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050237680A1 (en) * 2004-04-27 2005-10-27 Microsoft Corporation Leakage current interrupter with sustained overvoltage and/or overcurrent protection
TW200636542A (en) * 2004-09-28 2006-10-16 Broadcom Corp Method and apparatus for high performance key detection with key debounce

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
EP2120339B1 (en) 2018-10-03
EP2120339A2 (en) 2009-11-18
EP2120339A3 (en) 2010-12-08
US8138811B2 (en) 2012-03-20
CN101581764B (zh) 2013-11-06
KR20090119706A (ko) 2009-11-19

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MM4A Annulment or lapse of patent due to non-payment of fees