NL7310090A - - Google Patents
Info
- Publication number
- NL7310090A NL7310090A NL7310090A NL7310090A NL7310090A NL 7310090 A NL7310090 A NL 7310090A NL 7310090 A NL7310090 A NL 7310090A NL 7310090 A NL7310090 A NL 7310090A NL 7310090 A NL7310090 A NL 7310090A
- Authority
- NL
- Netherlands
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
- H03M11/20—Dynamic coding, i.e. by key scanning
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
- Calculators And Similar Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP47072532A JPS4931232A (xx) | 1972-07-21 | 1972-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7310090A true NL7310090A (xx) | 1974-01-23 |
Family
ID=13492034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7310090A NL7310090A (xx) | 1972-07-21 | 1973-07-19 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3900845A (xx) |
| JP (1) | JPS4931232A (xx) |
| DE (1) | DE2337084A1 (xx) |
| FR (1) | FR2194327A5 (xx) |
| GB (1) | GB1432706A (xx) |
| IT (1) | IT991329B (xx) |
| NL (1) | NL7310090A (xx) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB35278A (xx) * | 1972-07-26 | |||
| JPS5626058B2 (xx) * | 1975-02-12 | 1981-06-16 | ||
| US4032908A (en) * | 1975-07-02 | 1977-06-28 | Automated Systems, Inc. | Security alarm system |
| JPS5221729A (en) * | 1975-08-11 | 1977-02-18 | Sharp Corp | Key input device |
| JPS5477532A (en) * | 1977-12-02 | 1979-06-21 | Matsushita Electric Ind Co Ltd | Key identifying circuit |
| JPS58192581A (ja) * | 1982-05-04 | 1983-11-10 | 山野 陸三 | 噴水流式洗たく機 |
| US4581603A (en) * | 1983-03-11 | 1986-04-08 | The Maxi-Switch Company | Switch matrix key closure validation device and method |
| JP3243365B2 (ja) * | 1994-04-19 | 2002-01-07 | シャープ株式会社 | キー入力装置 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493928A (en) * | 1966-07-12 | 1970-02-03 | Ibm | Electronic keyboard terminal code checking system |
| US3624645A (en) * | 1969-12-15 | 1971-11-30 | Sperry Rand Corp | Oscillator keyboard with roll and double-strike control |
| JPS4842427B1 (xx) * | 1970-03-14 | 1973-12-12 | ||
| JPS5035372B1 (xx) * | 1970-03-26 | 1975-11-15 | ||
| US3740745A (en) * | 1970-09-28 | 1973-06-19 | Eaton Corp | Ring core keyboard entry device |
| NL166140C (nl) * | 1970-11-14 | 1981-06-15 | Philips Nv | Toetsenbord. |
| JPS5019374Y1 (xx) * | 1970-11-25 | 1975-06-12 | ||
| US3720938A (en) * | 1971-04-19 | 1973-03-13 | Lematex Inc | System for preventing erroneous data output signals from an electrical keyboard |
| JPS541406B2 (xx) * | 1971-12-20 | 1979-01-24 | ||
| US3715747A (en) * | 1971-12-30 | 1973-02-06 | Ibm | Capacitive keyboard electronics |
| JPS4924635A (xx) * | 1972-06-30 | 1974-03-05 | ||
| US3771130A (en) * | 1972-10-10 | 1973-11-06 | Lear Siegler Inc | Mode selection network |
-
1972
- 1972-07-21 JP JP47072532A patent/JPS4931232A/ja active Pending
-
1973
- 1973-07-13 FR FR7325782A patent/FR2194327A5/fr not_active Expired
- 1973-07-13 GB GB3347873A patent/GB1432706A/en not_active Expired
- 1973-07-19 NL NL7310090A patent/NL7310090A/xx unknown
- 1973-07-20 DE DE19732337084 patent/DE2337084A1/de active Pending
- 1973-07-20 IT IT26894/73A patent/IT991329B/it active
- 1973-07-23 US US381486A patent/US3900845A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3900845A (en) | 1975-08-19 |
| DE2337084A1 (de) | 1974-02-21 |
| GB1432706A (en) | 1976-04-22 |
| FR2194327A5 (xx) | 1974-02-22 |
| JPS4931232A (xx) | 1974-03-20 |
| IT991329B (it) | 1975-07-30 |