WO2004025402A3 - Rf absorption switching for keyboard signaling - Google Patents
Rf absorption switching for keyboard signaling Download PDFInfo
- Publication number
- WO2004025402A3 WO2004025402A3 PCT/US2003/028179 US0328179W WO2004025402A3 WO 2004025402 A3 WO2004025402 A3 WO 2004025402A3 US 0328179 W US0328179 W US 0328179W WO 2004025402 A3 WO2004025402 A3 WO 2004025402A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resonant tank
- energy
- absorption
- tank circuit
- sensor device
- Prior art date
Links
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
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003274959A AU2003274959A1 (en) | 2002-09-10 | 2003-09-10 | Rf absorption switching for keyboard signaling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40995302P | 2002-09-10 | 2002-09-10 | |
US60/409,953 | 2002-09-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004025402A2 WO2004025402A2 (en) | 2004-03-25 |
WO2004025402A3 true WO2004025402A3 (en) | 2004-11-25 |
Family
ID=31994037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/028179 WO2004025402A2 (en) | 2002-09-10 | 2003-09-10 | Rf absorption switching for keyboard signaling |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2003274959A1 (en) |
WO (1) | WO2004025402A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2570533B (en) | 2017-12-20 | 2021-09-22 | Sonuus Ltd | Keyboard sensor systems and methods |
GB2578346B (en) | 2018-08-07 | 2021-03-03 | Sonuus Ltd | Computer input devices |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3818472A (en) * | 1972-05-26 | 1974-06-18 | K Mauk | R.f. system for detecting unauthorized travel of articles through a selected zone |
US5378069A (en) * | 1992-08-24 | 1995-01-03 | Product Engineering & Mfg., Inc. | Environmentally safe touch typing keyboard |
US5677688A (en) * | 1991-09-06 | 1997-10-14 | David Sarnoff Research Center, Inc. | Optomechanical information entry device |
-
2003
- 2003-09-10 WO PCT/US2003/028179 patent/WO2004025402A2/en not_active Application Discontinuation
- 2003-09-10 AU AU2003274959A patent/AU2003274959A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3818472A (en) * | 1972-05-26 | 1974-06-18 | K Mauk | R.f. system for detecting unauthorized travel of articles through a selected zone |
US5677688A (en) * | 1991-09-06 | 1997-10-14 | David Sarnoff Research Center, Inc. | Optomechanical information entry device |
US5378069A (en) * | 1992-08-24 | 1995-01-03 | Product Engineering & Mfg., Inc. | Environmentally safe touch typing keyboard |
Also Published As
Publication number | Publication date |
---|---|
AU2003274959A1 (en) | 2004-04-30 |
WO2004025402A2 (en) | 2004-03-25 |
AU2003274959A8 (en) | 2004-04-30 |
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