WO2004025402A3 - Commutation a absorption rf pour signalisation de clavier - Google Patents

Commutation a absorption rf pour signalisation de clavier Download PDF

Info

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
Application number
PCT/US2003/028179
Other languages
English (en)
Other versions
WO2004025402A2 (fr
Inventor
Roy J Lahr
Original Assignee
Rast Associates Llc
Roy J Lahr
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rast Associates Llc, Roy J Lahr filed Critical Rast Associates Llc
Priority to AU2003274959A priority Critical patent/AU2003274959A1/en
Publication of WO2004025402A2 publication Critical patent/WO2004025402A2/fr
Publication of WO2004025402A3 publication Critical patent/WO2004025402A3/fr

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

La présente invention a trait à un dispositif de clavier comportant une pluralité de touches, un circuit oscillant final correspondant à chacune de la pluralité de touches, chaque circuit d'oscillation final étant configuré pour l'absorption d'énergie à une fréquence respective prédéterminée, un dispositif capteur configuré pour la capture de l'absorption d'énergie par les circuits d'oscillation finals à des fréquences prédéterminées, un dispositif émetteur configuré pour l'émission d'énergie dans un trajet des circuits d'oscillation finals vers le dispositif capteur, et un dispositif de détermination configuré pour la détermination d'un état d'enfoncement des touches selon l'absorption, captée par le dispositif capteur, aux fréquences prédéterminées de l'énergie émise par le dispositif émetteur.
PCT/US2003/028179 2002-09-10 2003-09-10 Commutation a absorption rf pour signalisation de clavier WO2004025402A2 (fr)

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 (fr) 2004-03-25
WO2004025402A3 true WO2004025402A3 (fr) 2004-11-25

Family

ID=31994037

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/028179 WO2004025402A2 (fr) 2002-09-10 2003-09-10 Commutation a absorption rf pour signalisation de clavier

Country Status (2)

Country Link
AU (1) AU2003274959A1 (fr)
WO (1) WO2004025402A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2570533B (en) 2017-12-20 2021-09-22 Sonuus Ltd Keyboard sensor systems and methods
GB2584763B (en) * 2018-08-07 2023-03-29 Sonuus Ltd Computer input devices

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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 (fr) 2004-03-25
AU2003274959A8 (en) 2004-04-30

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