GB8320294D0 - Keyboard input devices - Google Patents
Keyboard input devicesInfo
- Publication number
- GB8320294D0 GB8320294D0 GB838320294A GB8320294A GB8320294D0 GB 8320294 D0 GB8320294 D0 GB 8320294D0 GB 838320294 A GB838320294 A GB 838320294A GB 8320294 A GB8320294 A GB 8320294A GB 8320294 D0 GB8320294 D0 GB 8320294D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- input devices
- keyboard input
- keyboard
- devices
- input
- 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.)
- Pending
Links
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB838320294A GB8320294D0 (en) | 1983-07-27 | 1983-07-27 | Keyboard input devices |
PCT/GB1984/000255 WO1985000713A1 (en) | 1983-07-27 | 1984-07-19 | Keyboard input devices |
EP19840902811 EP0151597A1 (en) | 1983-07-27 | 1984-07-19 | Keyboard input devices |
AU31532/84A AU3153284A (en) | 1983-07-27 | 1984-07-19 | Keyboard input devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB838320294A GB8320294D0 (en) | 1983-07-27 | 1983-07-27 | Keyboard input devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB8320294D0 true GB8320294D0 (en) | 1983-09-01 |
Family
ID=10546392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB838320294A Pending GB8320294D0 (en) | 1983-07-27 | 1983-07-27 | Keyboard input devices |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0151597A1 (en) |
AU (1) | AU3153284A (en) |
GB (1) | GB8320294D0 (en) |
WO (1) | WO1985000713A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2599525B1 (en) * | 1986-06-02 | 1988-07-29 | Dassault Electronique | SECURITY KEYBOARD UNIT, PARTICULARLY FOR COMPOSING A CONFIDENTIAL CODE |
DE4111329C1 (en) * | 1991-04-08 | 1992-12-24 | S. Siedle & Soehne Telefon- Und Telegrafenwerke Stiftung & Co, 7743 Furtwangen, De | Keyboard scanning appts. for detecting key depressions - identifies key from return line and from temporal location of pulse on line, using shift register and processor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4199750A (en) * | 1975-11-10 | 1980-04-22 | Hitachi, Ltd. | Key input circuit capable of roll-over operation |
US4222038A (en) * | 1978-02-24 | 1980-09-09 | Motorola, Inc. | Microcomputer keyboard input circuitry |
CH625072A5 (en) * | 1978-03-08 | 1981-08-31 | Landis & Gyr Ag |
-
1983
- 1983-07-27 GB GB838320294A patent/GB8320294D0/en active Pending
-
1984
- 1984-07-19 AU AU31532/84A patent/AU3153284A/en not_active Abandoned
- 1984-07-19 WO PCT/GB1984/000255 patent/WO1985000713A1/en unknown
- 1984-07-19 EP EP19840902811 patent/EP0151597A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
AU3153284A (en) | 1985-03-04 |
EP0151597A1 (en) | 1985-08-21 |
WO1985000713A1 (en) | 1985-02-14 |
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