DE2146012C3 - Kontaktlose Tastaturvorrichtung - Google Patents
Kontaktlose TastaturvorrichtungInfo
- Publication number
- DE2146012C3 DE2146012C3 DE2146012A DE2146012A DE2146012C3 DE 2146012 C3 DE2146012 C3 DE 2146012C3 DE 2146012 A DE2146012 A DE 2146012A DE 2146012 A DE2146012 A DE 2146012A DE 2146012 C3 DE2146012 C3 DE 2146012C3
- Authority
- DE
- Germany
- Prior art keywords
- key
- windings
- circuit
- primary
- pressed
- 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
Links
- 238000004804 winding Methods 0.000 claims description 66
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 4
- 230000005291 magnetic effect Effects 0.000 description 22
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 230000000994 depressogenic effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Classifications
-
- 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
- H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
- H03K17/972—Switches controlled by moving an element forming part of the switch using a magnetic movable element having a plurality of control members, e.g. keyboard
-
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7494970A | 1970-09-24 | 1970-09-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2146012A1 DE2146012A1 (de) | 1972-03-30 |
| DE2146012B2 DE2146012B2 (de) | 1974-07-18 |
| DE2146012C3 true DE2146012C3 (de) | 1975-03-06 |
Family
ID=22122613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2146012A Expired DE2146012C3 (de) | 1970-09-24 | 1971-09-15 | Kontaktlose Tastaturvorrichtung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3668697A (enExample) |
| JP (1) | JPS5245171B1 (enExample) |
| CA (1) | CA939610A (enExample) |
| DE (1) | DE2146012C3 (enExample) |
| FR (1) | FR2131215A5 (enExample) |
| GB (1) | GB1315885A (enExample) |
| MY (1) | MY7500223A (enExample) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4117438A (en) * | 1977-04-13 | 1978-09-26 | Datanetics Corporation | Contactless keyswitch for keyboards |
| JPS547717Y2 (enExample) * | 1978-01-12 | 1979-04-10 | ||
| US4300127A (en) * | 1978-09-27 | 1981-11-10 | Bernin Victor M | Solid state noncontacting keyboard employing a differential transformer element |
| US4494109A (en) * | 1978-09-27 | 1985-01-15 | Bernin Victor M | Noncontacting keyboard employing a transformer element |
| US4283714A (en) * | 1979-08-08 | 1981-08-11 | Texas Instruments Incorporated | Magnetic keyboard system |
| US4401986A (en) * | 1979-12-26 | 1983-08-30 | Texas Instruments Incorporated | Position sensor and system |
| US4398180A (en) | 1980-06-26 | 1983-08-09 | International Standard Electric Corporation | Contactless keyboard |
| ATE30131T1 (de) * | 1982-04-15 | 1987-10-15 | Alcatel Nv | Tastenelement. |
| DE3836733A1 (de) * | 1988-10-28 | 1990-05-03 | Mannesmann Kienzle Gmbh | Schaltungsanordnung zur einstellung des ausloesepunktes in einer induktiven tastatur |
| JP2733300B2 (ja) * | 1989-04-28 | 1998-03-30 | 松下電器産業株式会社 | キー入力装置 |
| WO2021081570A1 (en) | 2019-10-22 | 2021-04-29 | Azoteq (Pty) Ltd | Electronic device user interface |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2997703A (en) * | 1956-08-03 | 1961-08-22 | Clary Corp | Keyboard controlled circuitry |
| US3453598A (en) * | 1965-06-03 | 1969-07-01 | Nasco Design Corp | Credit card verifier using transformers |
| DE1549489B2 (de) * | 1967-03-18 | 1972-08-31 | Kienzle Apparate Gmbh, 7730 Villingen | Vorrichtung zur eingabe alphanumerischer informationen in datenverarbeitungsmaschinen |
| US3551865A (en) * | 1968-08-20 | 1970-12-29 | Transducer Systems Inc | Keyboard switch means |
-
1970
- 1970-09-24 US US74949A patent/US3668697A/en not_active Expired - Lifetime
-
1971
- 1971-08-31 CA CA121,855A patent/CA939610A/en not_active Expired
- 1971-09-13 GB GB4259171A patent/GB1315885A/en not_active Expired
- 1971-09-15 DE DE2146012A patent/DE2146012C3/de not_active Expired
- 1971-09-21 FR FR7133892A patent/FR2131215A5/fr not_active Expired
- 1971-09-23 JP JP46073871A patent/JPS5245171B1/ja active Pending
-
1975
- 1975-12-30 MY MY223/75A patent/MY7500223A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1315885A (en) | 1973-05-02 |
| FR2131215A5 (enExample) | 1972-11-10 |
| MY7500223A (en) | 1975-12-31 |
| DE2146012B2 (de) | 1974-07-18 |
| DE2146012A1 (de) | 1972-03-30 |
| US3668697A (en) | 1972-06-06 |
| CA939610A (en) | 1974-01-08 |
| JPS5245171B1 (enExample) | 1977-11-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| 8339 | Ceased/non-payment of the annual fee |