FR2148438A1 - - Google Patents
Info
- Publication number
- FR2148438A1 FR2148438A1 FR7227020A FR7227020A FR2148438A1 FR 2148438 A1 FR2148438 A1 FR 2148438A1 FR 7227020 A FR7227020 A FR 7227020A FR 7227020 A FR7227020 A FR 7227020A FR 2148438 A1 FR2148438 A1 FR 2148438A1
- Authority
- FR
- France
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
-
- 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
- H03K17/968—Switches controlled by moving an element forming part of the switch using opto-electronic devices
- H03K17/969—Switches controlled by moving an element forming part of the switch using opto-electronic devices having a plurality of control members, e.g. keyboard
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
- H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2139543A DE2139543B2 (de) | 1971-08-06 | 1971-08-06 | Fotoelektrische Tastatur für Dateneingabegeräte oder dergleichen |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2148438A1 true FR2148438A1 (fr) | 1973-03-23 |
Family
ID=5816038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7227020A Withdrawn FR2148438A1 (fr) | 1971-08-06 | 1972-07-27 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3750150A (fr) |
AU (1) | AU471027B2 (fr) |
CH (1) | CH544343A (fr) |
DE (1) | DE2139543B2 (fr) |
ES (1) | ES405572A1 (fr) |
FR (1) | FR2148438A1 (fr) |
IT (1) | IT963318B (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2650308C3 (de) * | 1976-11-02 | 1979-08-02 | Olympia Werke Ag, 2940 Wilhelmshaven | Tastatur |
US4379968A (en) * | 1980-12-24 | 1983-04-12 | Burroughs Corp. | Photo-optical keyboard having light attenuating means |
USRE32419E (en) * | 1981-03-16 | 1987-05-12 | Engineering Research Applications, Inc. | Molded keyboard and method of fabricating same |
US4442425A (en) * | 1981-11-13 | 1984-04-10 | Sperry Corporation | Passive fiber optic keyboard |
US4836636A (en) * | 1986-11-13 | 1989-06-06 | The Furukawa Electric Co., Ltd. | Optical switch and optical keyboard utilizing the same |
DE3901419A1 (de) * | 1989-01-19 | 1990-07-26 | Philips Patentverwaltung | Tastatur fuer ein elektrisches geraet |
GB9119092D0 (en) * | 1991-09-06 | 1991-10-23 | Sarnoff David Res Center | Optomechanical keyboard |
CN111312547B (zh) * | 2019-06-18 | 2023-08-04 | 光宝电子(广州)有限公司 | 按键模块、应用其的键盘及电子装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2641753A (en) * | 1951-07-14 | 1953-06-09 | Monroe Calculating Machine | Photoelectric keyboard |
US3017463A (en) * | 1959-04-10 | 1962-01-16 | Bendix Corp | Keyboard apparatus |
NL277886A (fr) * | 1961-05-02 | |||
US3465099A (en) * | 1967-09-05 | 1969-09-02 | Friden Inc | Optical encoder |
US3579047A (en) * | 1968-02-13 | 1971-05-18 | Diehl Fa | Keyboard using switches having light obstructing elements |
US3617627A (en) * | 1968-05-03 | 1971-11-02 | Teletype Corp | Code converter suitable for use with a keyboard |
-
1971
- 1971-08-06 DE DE2139543A patent/DE2139543B2/de active Granted
-
1972
- 1972-07-21 US US00273930A patent/US3750150A/en not_active Expired - Lifetime
- 1972-07-25 IT IT27366/72A patent/IT963318B/it active
- 1972-07-27 FR FR7227020A patent/FR2148438A1/fr not_active Withdrawn
- 1972-07-31 AU AU45131/72A patent/AU471027B2/en not_active Expired
- 1972-08-03 CH CH1153372A patent/CH544343A/de not_active IP Right Cessation
- 1972-08-05 ES ES405572A patent/ES405572A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH544343A (de) | 1973-11-15 |
DE2139543A1 (de) | 1973-03-01 |
AU471027B2 (en) | 1976-04-08 |
IT963318B (it) | 1974-01-10 |
DE2139543C3 (fr) | 1974-10-03 |
ES405572A1 (es) | 1975-08-01 |
AU4513172A (en) | 1974-02-07 |
US3750150A (en) | 1973-07-31 |
DE2139543B2 (de) | 1974-03-07 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |