JP4295924B2 - 抵抗梯子スイッチングマトリクスをキャリブレートする方法および装置 - Google Patents

抵抗梯子スイッチングマトリクスをキャリブレートする方法および装置 Download PDF

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Publication number
JP4295924B2
JP4295924B2 JP2000583169A JP2000583169A JP4295924B2 JP 4295924 B2 JP4295924 B2 JP 4295924B2 JP 2000583169 A JP2000583169 A JP 2000583169A JP 2000583169 A JP2000583169 A JP 2000583169A JP 4295924 B2 JP4295924 B2 JP 4295924B2
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Japan
Prior art keywords
cover
calibration element
calibration
contact
keypad
Prior art date
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Expired - Fee Related
Application number
JP2000583169A
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English (en)
Japanese (ja)
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JP2002530764A (ja
JP2002530764A5 (2
Inventor
クラクストン、ダニエル・ディー
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.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
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Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of JP2002530764A publication Critical patent/JP2002530764A/ja
Publication of JP2002530764A5 publication Critical patent/JP2002530764A5/ja
Application granted granted Critical
Publication of JP4295924B2 publication Critical patent/JP4295924B2/ja
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/22—Static coding
    • H03M11/24—Static coding using analogue means, e.g. by coding the states of multiple switches into a single multi-level analogue signal or by indicating the type of a device using the voltage level at a specific tap of a resistive divider
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0241—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call
    • H04M1/0245—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call using open/close detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Set Structure (AREA)
  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Transmitters (AREA)
  • Analogue/Digital Conversion (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Telephone Function (AREA)
JP2000583169A 1998-11-13 1999-11-12 抵抗梯子スイッチングマトリクスをキャリブレートする方法および装置 Expired - Fee Related JP4295924B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/191,200 US6178388B1 (en) 1998-11-13 1998-11-13 Method and apparatus for calibrating a resistive ladder switching matrix
US09/191,200 1998-11-13
PCT/US1999/026853 WO2000030263A1 (en) 1998-11-13 1999-11-12 Method and apparatus for calibrating a resistive ladder switching matrix

Publications (3)

Publication Number Publication Date
JP2002530764A JP2002530764A (ja) 2002-09-17
JP2002530764A5 JP2002530764A5 (2) 2007-12-13
JP4295924B2 true JP4295924B2 (ja) 2009-07-15

Family

ID=22704516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000583169A Expired - Fee Related JP4295924B2 (ja) 1998-11-13 1999-11-12 抵抗梯子スイッチングマトリクスをキャリブレートする方法および装置

Country Status (12)

Country Link
US (1) US6178388B1 (2)
EP (1) EP1131891B1 (2)
JP (1) JP4295924B2 (2)
KR (1) KR20010080446A (2)
CN (1) CN1168220C (2)
AT (1) ATE287592T1 (2)
AU (1) AU767291B2 (2)
CA (1) CA2350579C (2)
DE (1) DE69923343T2 (2)
HK (1) HK1042599B (2)
RU (1) RU2233539C2 (2)
WO (1) WO2000030263A1 (2)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE520689C2 (sv) * 1997-12-19 2003-08-12 Ericsson Telefon Ab L M Lock innefattande elekriska kalibreringsorgan, portabel anordning och sätt att tillverka ett lock
TW439366B (en) * 1999-11-19 2001-06-07 Darfon Electronics Corp Key scanning circuit
US6577250B1 (en) * 2000-05-19 2003-06-10 Microsoft Corporation Resistance based keyboard key discrimination
DE10044087A1 (de) * 2000-09-07 2002-04-04 Bosch Gmbh Robert Vorrichtung zur Aktivierung eines Steuergeräts
US6628216B2 (en) * 2002-02-13 2003-09-30 Intersil Americas Inc. Calibration of resistor ladder using difference measurement and parallel resistive correction
US8526950B2 (en) * 2003-12-30 2013-09-03 Nokia Corporation Determining handover based on state of mobile terminal
US7248195B2 (en) * 2005-11-30 2007-07-24 Symbol Technologies, Inc. Methods and apparatus for multiplexed digital inputs using an analog-to-digital converter
JP4578451B2 (ja) * 2006-09-15 2010-11-10 京セラ株式会社 電子機器
TWI307520B (en) * 2006-09-15 2009-03-11 Novatek Microelectronics Corp Key system utilizing two operation nodes to detect the status of a plurality of keys
US7639168B1 (en) * 2007-02-06 2009-12-29 Linear Technology Corporation Systems and methods for switch resistance control in digital to analog converters (DACs)
US10529506B2 (en) 2015-12-31 2020-01-07 Onespan North America Inc. Electronic apparatus comprising a linear keypad
RO132882A2 (ro) 2017-04-05 2018-10-30 Preh Gmbh Sistem şi metodă pentru citirea simultană a mai multor butoane sau senzori utilizând un singur pin analogic al unui microcontroler

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015254A (en) * 1975-12-04 1977-03-29 General Motors Corporation Keyboard encoding circuit utilizing an A/D converter
US4118700A (en) * 1977-05-31 1978-10-03 Rca Corporation Single wire transmission of multiple switch operations
US4695840A (en) * 1985-09-03 1987-09-22 Mobil Oil Corporation Remote switch position determination using duty cycle modulation
US4884070A (en) * 1988-04-04 1989-11-28 California Institute Of Technology Method and apparatus for multiplexing switch signals
AT397311B (de) * 1991-08-16 1994-03-25 Hans Dr Leopold Verfahren zur bestimmung einer messgrösse sowie schaltungsanordnung zur durchführung des verfahrens
US5543588A (en) * 1992-06-08 1996-08-06 Synaptics, Incorporated Touch pad driven handheld computing device
US5510783A (en) * 1992-07-13 1996-04-23 Interlink Electronics, Inc. Adaptive keypad
DE4227149A1 (de) * 1992-08-17 1994-02-24 Hans Joachim Dr Ing Schuster Meßverfahren zur Ermittlung der Widerstandswerte ohmscher Widerstände, insbesondere Temperaturfühler
US5469364A (en) * 1993-03-15 1995-11-21 Hughey; Bradley W. Apparatus and methods for measuring and detecting variations in the value of a capacitor
US5515040A (en) * 1993-09-28 1996-05-07 Sejin Electron, Incorporated Methods of self-calibration for a key-type mouse
US5619196A (en) * 1995-12-28 1997-04-08 Universal Electronics Inc. Single wire keyboard encode and decode circuit
KR100203745B1 (ko) * 1996-05-27 1999-06-15 윤종용 에이디씨-키 패드 장치 및 그의 제어방법
US5900829A (en) * 1996-07-23 1999-05-04 Motorola, Inc. Method of and apparatus for detecting key actuations
US5798716A (en) * 1996-08-23 1998-08-25 Motorola, Inc. Method and apparatus for detecting key actuations
RU2121221C1 (ru) * 1996-09-27 1998-10-27 Государственное предприятие - Научно-исследовательский и проектно-конструкторский институт средств автоматизации на железнодорожном транспорте Кодирующее устройство для проверки систем телемеханики на сортировочных горках
FR2754399B1 (fr) * 1996-10-09 1998-12-04 Connexion Soc Nle Contacts tournants a effets auto-nettoyant
SE520689C2 (sv) * 1997-12-19 2003-08-12 Ericsson Telefon Ab L M Lock innefattande elekriska kalibreringsorgan, portabel anordning och sätt att tillverka ett lock

Also Published As

Publication number Publication date
KR20010080446A (ko) 2001-08-22
HK1042599B (zh) 2005-05-20
US6178388B1 (en) 2001-01-23
JP2002530764A (ja) 2002-09-17
RU2233539C2 (ru) 2004-07-27
HK1042599A1 (en) 2002-08-16
ATE287592T1 (de) 2005-02-15
AU767291B2 (en) 2003-11-06
EP1131891A1 (en) 2001-09-12
DE69923343D1 (de) 2005-02-24
WO2000030263A1 (en) 2000-05-25
CA2350579A1 (en) 2000-05-25
CN1342344A (zh) 2002-03-27
DE69923343T2 (de) 2006-05-04
AU1620900A (en) 2000-06-05
EP1131891B1 (en) 2005-01-19
CA2350579C (en) 2008-02-05
CN1168220C (zh) 2004-09-22

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