FR2028357A1 - - Google Patents
Info
- Publication number
- FR2028357A1 FR2028357A1 FR6945799A FR6945799A FR2028357A1 FR 2028357 A1 FR2028357 A1 FR 2028357A1 FR 6945799 A FR6945799 A FR 6945799A FR 6945799 A FR6945799 A FR 6945799A FR 2028357 A1 FR2028357 A1 FR 2028357A1
- 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- Withdrawn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
-
- 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
- H03M11/22—Static coding
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Logic Circuits (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Electronic Switches (AREA)
- Input From Keyboards Or The Like (AREA)
- Push-Button Switches (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79140669A | 1969-01-15 | 1969-01-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2028357A1 true FR2028357A1 (de) | 1970-10-09 |
Family
ID=25153625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR6945799A Withdrawn FR2028357A1 (de) | 1969-01-15 | 1969-12-30 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3551616A (de) |
| JP (1) | JPS4814623B1 (de) |
| CA (1) | CA922638A (de) |
| DE (1) | DE2001703A1 (de) |
| FR (1) | FR2028357A1 (de) |
| GB (1) | GB1248382A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0016912A1 (de) * | 1979-04-02 | 1980-10-15 | International Business Machines Corporation | Schalteranordnung für Tastenfeld |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3693775A (en) * | 1970-06-30 | 1972-09-26 | Ibm | Actuator for elastic diaphragm switch keyboard |
| US3684842A (en) * | 1970-07-01 | 1972-08-15 | Texas Instruments Inc | Pushbutton keyboard switch assembly with improved over center diaphragm contact |
| US3676615A (en) * | 1970-07-13 | 1972-07-11 | Ibm | Pushbutton keyboard switch array and associated printed circuit logic cards |
| US3710137A (en) * | 1970-08-06 | 1973-01-09 | A Stephens | Control system and method |
| US3696908A (en) * | 1970-11-09 | 1972-10-10 | Sperry Rand Corp | Capacitive key |
| US3721976A (en) * | 1971-02-01 | 1973-03-20 | Omron Syst Inc | Keyboard coding and interlock system |
| US3731015A (en) * | 1971-05-18 | 1973-05-01 | Universal Technology | Control keyboard switch with cantilevered contact and diode matrix array |
| US3797630A (en) * | 1971-07-12 | 1974-03-19 | Alphanumeric Holdings Ltd | Keyboard for electronic circuit |
| US4066850A (en) * | 1976-06-04 | 1978-01-03 | Ncr Corporation | Keyboard switch assembly having interchangeable cover plate, indicating layer and actuator switch assembly in any operative combination |
| US4071718A (en) * | 1976-10-22 | 1978-01-31 | Bowmar Instrument Corporation | Flat keyboard assembly having cover type membrane with protrusions to align switch components |
| US4293849A (en) * | 1979-05-23 | 1981-10-06 | Phillips Petroleum Company | Keyboard encoder using priority encoders |
| GB2064873B (en) * | 1979-11-26 | 1984-09-05 | Eventoff Franklin Neal | Pressure sensitive electric switch |
| JPS58189918A (ja) * | 1982-04-30 | 1983-11-05 | 日本メクトロン株式会社 | キ−ボ−ドスイツチ |
| US4727225A (en) * | 1986-07-10 | 1988-02-23 | Illinois Tool Works Inc. | Electrical switch for actuating a plurality of circuits |
| GB9004532D0 (en) * | 1990-02-28 | 1990-04-25 | Lucas Ind Plc | Switch assembly |
| US5374796A (en) * | 1991-11-27 | 1994-12-20 | Picker International, Inc. | Contact sensor with improved sensitivity |
| US5684279A (en) * | 1995-09-12 | 1997-11-04 | Key Tronic Corporation | Computer keyboard with improved membrane keyswitch structure having deflection concentration feature |
| US5900829A (en) * | 1996-07-23 | 1999-05-04 | Motorola, Inc. | Method of and apparatus for detecting key actuations |
| WO2004077679A1 (en) * | 2003-02-28 | 2004-09-10 | Infineon Technologies Ag | Method and apparatus for decoding a key matrix |
| GB2405247B (en) * | 2003-08-21 | 2007-07-25 | Hewlett Packard Development Co | Position sensing method and position sensing apparatus and its construction |
-
1969
- 1969-01-15 US US791406*A patent/US3551616A/en not_active Expired - Lifetime
- 1969-12-09 JP JP44098409A patent/JPS4814623B1/ja active Pending
- 1969-12-30 FR FR6945799A patent/FR2028357A1/fr not_active Withdrawn
-
1970
- 1970-01-06 GB GB573/70A patent/GB1248382A/en not_active Expired
- 1970-01-07 CA CA071569A patent/CA922638A/en not_active Expired
- 1970-01-15 DE DE19702001703 patent/DE2001703A1/de active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0016912A1 (de) * | 1979-04-02 | 1980-10-15 | International Business Machines Corporation | Schalteranordnung für Tastenfeld |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4814623B1 (de) | 1973-05-09 |
| CA922638A (en) | 1973-03-13 |
| DE2001703A1 (de) | 1970-07-30 |
| GB1248382A (en) | 1971-09-29 |
| US3551616A (en) | 1970-12-29 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |