FR2228409A5 - Keyboard control key having numerical or alphanumerical display - uses seven rectilinear segments or points forming alphanumeric symbols - Google Patents

Keyboard control key having numerical or alphanumerical display - uses seven rectilinear segments or points forming alphanumeric symbols

Info

Publication number
FR2228409A5
FR2228409A5 FR7315697A FR7315697A FR2228409A5 FR 2228409 A5 FR2228409 A5 FR 2228409A5 FR 7315697 A FR7315697 A FR 7315697A FR 7315697 A FR7315697 A FR 7315697A FR 2228409 A5 FR2228409 A5 FR 2228409A5
Authority
FR
France
Prior art keywords
display
control key
numerical
keyboard control
points forming
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7315697A
Other languages
French (fr)
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.)
SADAR SA
Original Assignee
SADAR SA
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 SADAR SA filed Critical SADAR SA
Priority to FR7315697A priority Critical patent/FR2228409A5/en
Application granted granted Critical
Publication of FR2228409A5 publication Critical patent/FR2228409A5/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/18—Modifications for indicating state of switch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The front face of the key is used to display a given number of figures or small dimension letters. The figures or letters are produced by electroluminescent diodes, or liquid crystals or other opto-electronic devices. The display is in the form of luminous segments or points, which permit the display of numerical or alphanumerical information. The key can also have the same height as a control key and a width is times the width of a control key which permits the display of a large number of letters or figures by means of electroluminescent elements on a keyboard of standard dimensions.
FR7315697A 1973-05-02 1973-05-02 Keyboard control key having numerical or alphanumerical display - uses seven rectilinear segments or points forming alphanumeric symbols Expired FR2228409A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7315697A FR2228409A5 (en) 1973-05-02 1973-05-02 Keyboard control key having numerical or alphanumerical display - uses seven rectilinear segments or points forming alphanumeric symbols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7315697A FR2228409A5 (en) 1973-05-02 1973-05-02 Keyboard control key having numerical or alphanumerical display - uses seven rectilinear segments or points forming alphanumeric symbols

Publications (1)

Publication Number Publication Date
FR2228409A5 true FR2228409A5 (en) 1974-11-29

Family

ID=9118693

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7315697A Expired FR2228409A5 (en) 1973-05-02 1973-05-02 Keyboard control key having numerical or alphanumerical display - uses seven rectilinear segments or points forming alphanumeric symbols

Country Status (1)

Country Link
FR (1) FR2228409A5 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340374A (en) * 1977-10-17 1982-07-20 Texas Instruments Incorporated Electronic learning aid
WO1983003691A1 (en) * 1982-04-14 1983-10-27 DAVID, Gábor Electric switch device with an actuator key comprising a non-galvanically coupled indicator display
US4447213A (en) * 1977-10-17 1984-05-08 Texas Instruments Incorporated Electronic learning aid
WO1985005704A1 (en) * 1984-06-06 1985-12-19 Lodovico Donati Keyboard for simultaneous insertion and handling of data
WO2001077802A1 (en) * 2000-04-11 2001-10-18 Gilbert Sabban Display keyboard

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340374A (en) * 1977-10-17 1982-07-20 Texas Instruments Incorporated Electronic learning aid
US4447213A (en) * 1977-10-17 1984-05-08 Texas Instruments Incorporated Electronic learning aid
WO1983003691A1 (en) * 1982-04-14 1983-10-27 DAVID, Gábor Electric switch device with an actuator key comprising a non-galvanically coupled indicator display
WO1985005704A1 (en) * 1984-06-06 1985-12-19 Lodovico Donati Keyboard for simultaneous insertion and handling of data
WO2001077802A1 (en) * 2000-04-11 2001-10-18 Gilbert Sabban Display keyboard

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Legal Events

Date Code Title Description
ST Notification of lapse