NL6906740A - - Google Patents

Info

Publication number
NL6906740A
NL6906740A NL6906740A NL6906740A NL6906740A NL 6906740 A NL6906740 A NL 6906740A NL 6906740 A NL6906740 A NL 6906740A NL 6906740 A NL6906740 A NL 6906740A NL 6906740 A NL6906740 A NL 6906740A
Authority
NL
Netherlands
Application number
NL6906740A
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 filed Critical
Publication of NL6906740A publication Critical patent/NL6906740A/xx

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
    • H03M11/26—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys using opto-electronic means
    • 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • H03K17/98—Switches controlled by moving an element forming part of the switch using a capacitive movable element having a plurality of control members, e.g. keyboard
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/02—Apparatus or circuits at the transmitting end

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
NL6906740A 1968-05-03 1969-05-02 NL6906740A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72635468A 1968-05-03 1968-05-03

Publications (1)

Publication Number Publication Date
NL6906740A true NL6906740A (xx) 1969-11-05

Family

ID=24918260

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6906740A NL6906740A (xx) 1968-05-03 1969-05-02

Country Status (5)

Country Link
US (1) US3617627A (xx)
BE (1) BE731524A (xx)
DE (1) DE1921851A1 (xx)
FR (1) FR2007742A1 (xx)
NL (1) NL6906740A (xx)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2139543B2 (de) * 1971-08-06 1974-03-07 Standard Elektrik Lorenz Ag, 7000 Stuttgart Fotoelektrische Tastatur für Dateneingabegeräte oder dergleichen
US3937952A (en) * 1972-09-22 1976-02-10 National Research Development Corporation Keyboard and switches for keyboards
US3856127A (en) * 1972-11-24 1974-12-24 U Halfon Photo-optical keyboard
DE2612162A1 (de) * 1976-03-23 1977-10-06 Lothar Sachsse Digital-tastatur nebst optischem uebertrager
DE2650308C3 (de) * 1976-11-02 1979-08-02 Olympia Werke Ag, 2940 Wilhelmshaven Tastatur
US4390861A (en) * 1979-11-02 1983-06-28 The Singer Company Cockpit display system to reduce vertigo
USRE32419E (en) * 1981-03-16 1987-05-12 Engineering Research Applications, Inc. Molded keyboard and method of fabricating same
US4362934A (en) * 1981-04-08 1982-12-07 Syntronics Music Corporation Velocity sensing device using opto-electronic switches
GB2173931B (en) * 1985-04-16 1988-05-11 Ncr Co Data input system including a keyboard having no moving parts
FR2604658B1 (fr) * 1986-10-02 1994-05-20 Souloumiac Alain Clavier a balayage matriciel
US4795900A (en) * 1986-03-27 1989-01-03 Sadao Kokubu Optical switch device employing a fluorescent substance with a radioactive element as a light source
US5834669A (en) * 1995-02-27 1998-11-10 Burgett, Inc. Method and apparatus for optically determining note characteristics from hammer catchers in a keyboard operated musical instrument
US5841050A (en) * 1995-02-27 1998-11-24 Burgett, Inc. Method and apparatus for optically determining note characteristics from key motion in a keyboard operated musical instrument
US5524521A (en) * 1995-02-27 1996-06-11 Burgett, Inc. Method and apparatus for optically determining note characteristics in a keyboard operated musical instrument
US7224344B2 (en) * 2003-08-05 2007-05-29 International Business Machines Corporation Key code filter apparatus and method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641753A (en) * 1951-07-14 1953-06-09 Monroe Calculating Machine Photoelectric keyboard
BE572561A (xx) * 1957-11-01
US3017463A (en) * 1959-04-10 1962-01-16 Bendix Corp Keyboard apparatus
NL274914A (xx) * 1961-02-17
US3104388A (en) * 1962-03-28 1963-09-17 Rabinow Engineering Co Inc Keyboard signal generator
US3201779A (en) * 1962-04-13 1965-08-17 United Aircraft Corp Magnetic encoder
US3140357A (en) * 1962-06-28 1964-07-07 Bell Telephone Labor Inc Multifrequency receiver
US3334237A (en) * 1964-02-07 1967-08-01 Monroe Internat Inc Photoelectric signal control with power keyboard actuated code discs
GB1091775A (en) * 1965-02-18 1967-11-22 Purdy & Mcintosh Electronic De Improvements in or relating to electrical selector circuits
US3381276A (en) * 1965-09-15 1968-04-30 Photo Magnetic Syst Inc Computer systems
US3526892A (en) * 1967-02-27 1970-09-01 Stromberg Carlson Corp Signalling system with upper and lower case designations
US3488451A (en) * 1967-04-05 1970-01-06 Bell Telephone Labor Inc Call transmitter
US3465099A (en) * 1967-09-05 1969-09-02 Friden Inc Optical encoder

Also Published As

Publication number Publication date
DE1921851A1 (de) 1969-11-20
BE731524A (xx) 1969-09-15
US3617627A (en) 1971-11-02
FR2007742A1 (xx) 1970-01-09

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