BR7907843A - Sistema e processo para a verificacao de teclado - Google Patents

Sistema e processo para a verificacao de teclado

Info

Publication number
BR7907843A
BR7907843A BR7907843A BR7907843A BR7907843A BR 7907843 A BR7907843 A BR 7907843A BR 7907843 A BR7907843 A BR 7907843A BR 7907843 A BR7907843 A BR 7907843A BR 7907843 A BR7907843 A BR 7907843A
Authority
BR
Brazil
Prior art keywords
verification
keyboard
keyboard verification
Prior art date
Application number
BR7907843A
Other languages
English (en)
Inventor
D Miller
J Painter
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of BR7907843A publication Critical patent/BR7907843A/pt

Links

Classifications

    • 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
    • H03M11/20—Dynamic coding, i.e. by key scanning

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
BR7907843A 1978-12-04 1979-11-29 Sistema e processo para a verificacao de teclado BR7907843A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/965,852 US4211915A (en) 1978-12-04 1978-12-04 Keyboard verification system

Publications (1)

Publication Number Publication Date
BR7907843A true BR7907843A (pt) 1980-07-29

Family

ID=25510590

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7907843A BR7907843A (pt) 1978-12-04 1979-11-29 Sistema e processo para a verificacao de teclado

Country Status (9)

Country Link
US (1) US4211915A (pt)
EP (1) EP0011840B1 (pt)
JP (1) JPS5597634A (pt)
AU (1) AU530110B2 (pt)
BR (1) BR7907843A (pt)
DE (1) DE2965119D1 (pt)
ES (1) ES8105494A1 (pt)
MX (1) MX147834A (pt)
YU (1) YU294779A (pt)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951929C2 (de) * 1979-12-21 1985-09-12 Siemens AG, 1000 Berlin und 8000 München Prüfeinrichtung
US4374381A (en) * 1980-07-18 1983-02-15 Interaction Systems, Inc. Touch terminal with reliable pad selection
US4543564A (en) * 1981-04-03 1985-09-24 Commissariat A L'energie Atomique Interference suppression apparatus for a capacitive keyboard
US4405917A (en) * 1981-04-28 1983-09-20 Honeywell Inc. Matrix screening and grounding arrangement and method
DE3215074A1 (de) * 1982-04-22 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Anordnung zur anpassung einer pruefeinrichtung an einen pruefling
US4758829A (en) * 1982-06-04 1988-07-19 Smith Iii William N Apparatus for stimulating a keyboard
US4581603A (en) * 1983-03-11 1986-04-08 The Maxi-Switch Company Switch matrix key closure validation device and method
JPS59195755A (ja) * 1983-04-20 1984-11-06 Casio Comput Co Ltd 小型電子機器
US4651133A (en) * 1984-12-24 1987-03-17 At&T Technologies, Inc. Method and apparatus for capacitive keyboard scanning
US4704601A (en) * 1985-06-27 1987-11-03 Illinois Tool Works Inc. Keyboard data entry system with hysteresis
US4728931A (en) * 1986-07-25 1988-03-01 Honeywell Inc. Charge redistribution capacitance detection apparatus
US4728932A (en) * 1986-07-25 1988-03-01 Honeywell Inc. Detector for capacitive sensing devices
US4794375A (en) * 1987-04-13 1988-12-27 Apple Computer, Inc. Keyboard crosspoint encoder having pseudo-n-key rollover
US4922184A (en) * 1988-08-29 1990-05-01 Control Data Corporation Apparatus and process for the simultaneous continuity sensing of multiple circuits
US4926475A (en) * 1988-11-30 1990-05-15 Motorola, Inc. Data encryption key failure monitor
FR2690544B1 (fr) * 1992-04-24 1994-06-17 Sextant Avionique Procede d'exploitation d'un clavier tactile capacitif.
US5572205A (en) * 1993-03-29 1996-11-05 Donnelly Technology, Inc. Touch control system
KR20010025777A (ko) * 1999-09-01 2001-04-06 이형도 키입력장치의 멀티키 처리방법
US20060221061A1 (en) * 2005-03-31 2006-10-05 Tyco Electronic Corporation Touch sensor and control with random pulse spacing
US20060227115A1 (en) * 2005-03-31 2006-10-12 Tyco Electronic Corporation Method and apparatus for touch sensor with interference rejection
CN209218068U (zh) 2015-12-31 2019-08-06 万思伴国际有限公司 包括线性键区的电子装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659163A (en) * 1969-07-29 1972-04-25 Konstantin Grigorievich Boriso Pushbutton variable capacitor
US3633015A (en) * 1970-03-09 1972-01-04 Francis F Lee Adjustable cycle length pseudorandom sequence generator
US3675239A (en) * 1970-09-14 1972-07-04 Ncr Co Unlimited roll keyboard circuit
US3735255A (en) * 1971-08-06 1973-05-22 A Goldman Apparatus and method for testing a multi-terminal logic circuit capable of detecting fixed and intermittant faults
US3750113A (en) * 1971-11-12 1973-07-31 Becton Dickinson Co Capacitive keyboard
US3786497A (en) * 1972-07-31 1974-01-15 Ibm Matrix keyboard method and apparatus
US3921166A (en) * 1972-09-15 1975-11-18 Raytheon Co Capacitance matrix keyboard
US3924181A (en) * 1973-10-16 1975-12-02 Hughes Aircraft Co Test circuitry employing a cyclic code generator
US3931610A (en) * 1973-11-29 1976-01-06 Teletype Corporation Capacitive keyswitch sensor and method
US3973256A (en) * 1975-07-14 1976-08-03 Compucorp Key detection system interconnecting keyboard and data processing system
JPS5258423A (en) * 1975-11-10 1977-05-13 Hitachi Ltd Key input circuit possible for roll over
US4044244A (en) * 1976-08-06 1977-08-23 International Business Machines Corporation Automatic tester for complex semiconductor components including combinations of logic, memory and analog devices and processes of testing thereof

Also Published As

Publication number Publication date
YU294779A (en) 1982-08-31
US4211915A (en) 1980-07-08
JPS5597634A (en) 1980-07-25
AU5257379A (en) 1980-06-12
DE2965119D1 (en) 1983-05-05
ES486595A0 (es) 1981-05-16
EP0011840B1 (en) 1983-03-30
ES8105494A1 (es) 1981-05-16
AU530110B2 (en) 1983-06-30
MX147834A (es) 1983-01-19
EP0011840A1 (en) 1980-06-11

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