MX147834A - Mejoras a sistema para verificar la operacion de las teclas individuales de un teclado en una maquina - Google Patents

Mejoras a sistema para verificar la operacion de las teclas individuales de un teclado en una maquina

Info

Publication number
MX147834A
MX147834A MX180295A MX18029579A MX147834A MX 147834 A MX147834 A MX 147834A MX 180295 A MX180295 A MX 180295A MX 18029579 A MX18029579 A MX 18029579A MX 147834 A MX147834 A MX 147834A
Authority
MX
Mexico
Prior art keywords
verify
keyboard
machine
individual keys
system improvements
Prior art date
Application number
MX180295A
Other languages
English (en)
Inventor
Donald Eugene Miller
John Phillip 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 MX147834A publication Critical patent/MX147834A/es

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)
MX180295A 1978-12-04 1979-12-03 Mejoras a sistema para verificar la operacion de las teclas individuales de un teclado en una maquina MX147834A (es)

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
MX147834A true MX147834A (es) 1983-01-19

Family

ID=25510590

Family Applications (1)

Application Number Title Priority Date Filing Date
MX180295A MX147834A (es) 1978-12-04 1979-12-03 Mejoras a sistema para verificar la operacion de las teclas individuales de un teclado en una maquina

Country Status (9)

Country Link
US (1) US4211915A (es)
EP (1) EP0011840B1 (es)
JP (1) JPS5597634A (es)
AU (1) AU530110B2 (es)
BR (1) BR7907843A (es)
DE (1) DE2965119D1 (es)
ES (1) ES486595A0 (es)
MX (1) MX147834A (es)
YU (1) YU294779A (es)

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
EP0062572B1 (fr) * 1981-04-03 1986-10-15 Commissariat à l'Energie Atomique Clavier capacitif à structure antiparasite
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
WO2017117613A2 (en) * 2015-12-31 2017-07-06 Vasco Data Securty, Inc. An electronic apparatus comprising a linear keypad

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
AU530110B2 (en) 1983-06-30
YU294779A (en) 1982-08-31
ES8105494A1 (es) 1981-05-16
ES486595A0 (es) 1981-05-16
US4211915A (en) 1980-07-08
EP0011840A1 (en) 1980-06-11
DE2965119D1 (en) 1983-05-05
BR7907843A (pt) 1980-07-29
JPS5597634A (en) 1980-07-25
EP0011840B1 (en) 1983-03-30
AU5257379A (en) 1980-06-12

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