[특허]Optical touchpad system and waveguide for use therein

[미국특허] Optical touchpad system and waveguide for use therein 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-003/042
출원번호	US-0480865 (2006-07-06)
등록번호	US8031186 (2011-09-19)
발명자 / 주소	Ostergaard, Jens Wagenblast Stubbe
출원인 / 주소	FlatFrog Laboratories AB
대리인 / 주소	Pillsbury Winthrop Shaw Pittman LLP
인용정보	피인용 횟수 : 13 인용 특허 : 17

초록 ▼

An optical touchpad system is disclosed that may be easily integrated into a variety of applications. One feature of the optical touchpad system that may contribute to this versatility may be the ability of the optical touchpad system to function in the same manner independent from a topology and/or opacity of an interface surface of the optical touchpad system. This may enable the interface surface to be composed of any of a variety of materials. This may further enable the interface surface to include various topologies adapted for the application in which the optical touchpad system may be employed.

대표청구항 ▼

What is claimed is: 1. An optical touchpad system comprising:one or more emitters configured to emit electromagnetic radiation;one or more sensors configured to receive electromagnetic radiation and output one or more output signals that correspond to one or more properties of the received electromagnetic radiation;a waveguide that guides a portion of the electromagnetic radiation emitted by the emitters to the sensors, the waveguide comprising:an irradiation layer that is optically coupled to the one or more emitters to receive electromagnetic radiation emitted therefrom,an interface surface spaced apart from the irradiation layer, the interface surface being configured to be engaged by a user with an object; anda signal layer separate from the irradiation layer that is optically coupled to the one or more sensors,wherein the waveguide is configured such that (i) if the interface surface is not deformed, the electromagnetic radiation received by the irradiation layer from the one or more emitters is kept wholly within the irradiation layer by total internal reflection, and (ii) if the interface surface is engaged with the object such that the engagement therebetween causes a local deformation in the irradiation layer, wherein a first portion of an irradiation layer surface is deformed while a second portion of the irradiation layer surface is not deformed, such local deformation of the irradiation layer causing the portion of the electromagnetic radiation incident on the local deformation to be reflected towards the signal layer at an angle such that the portion of the electromagnetic radiation reflected at the local deformation is leaked from the irradiation layer into the signal layer and guided to the one or more sensors at least in part by reflection within the signal layer.

이 특허에 인용된 특허 (17) 인용/피인용 타임라인 분석

Halldorsson Thorsteinn,DEX ; Schmidt-Bischoffshausen Horst,DEX ; Eberl Heinrich,DEX, Apparatus for recording the retina reflex image and for superimposing of additional images in the eye.
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Alles, Harold G.; Kubik, Peter S., Deformable touch sensitive surface.
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Fujimoto Kenneth Noboru, Integrated computer display and graphical input apparatus and method.
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George A. Plesko, Light beam scanning pen, scan module for the device and method of utilization.
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Stoustrup, Jakob; Cour-Harbo, Anders La, Method for determining the channel gain between emitters and receivers.
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Benderly, David, Optical modification of laser beam cross section in object marking systems.
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Wang,Jian; Zhang,Chunhui, Optical system design for a universal computing device.
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Sick Erwin (Icking DEX) Hartmann Klaus (Munich DEX) Henneberger Heinz (Stockdorf DEX), Photo electric light detection devices.
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Fukuzaki Yasuhiro (Saitama-ken JPX) Katsurahira Yuji (Saitama-ken JPX), Position detecting device and position pointing device therefor.
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Fukuzaki Yasuhiro (Saitama-ken JPX) Katsurahira Yuji (Saitama-ken JPX), Position pointing device including a memory and a position detecting device coupled by AC fields to the pointing device.
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Ball James V. (Santa Clara CA), Remote computer input system which detects point source on operator.
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Pinhas Gilboa IL, Six-degree of freedom tracking system having a passive transponder on the object being tracked.
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Eliasson,Jonas Ove Philip; ��stergaard,Jens Wagenblast Stubbe, System and method of determining a position of a radiation emitting element.
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Kasday Leonard R. (Plainsboro NJ), Touch position sensitive surface.
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Mallos James B. (Freehold NJ), Touch position sensitive surface.
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Yasutake Taizo, Touch sensitive input control device.
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Moissev Vitali D.,RUX ; Sumenkov Vitali P.,RUX ; Tareev Andrev A.,RUX ; Tareev Aleksey A.,RUX ; Singer Roland,DEX, Touchpad with active plane for pen detection.
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이 특허를 인용한 특허 (13) 인용/피인용 타임라인 분석

Kenney, Kevin M.; Russell-Clarke, Peter N., Composite enclosure.
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Ohlsson, Nicklas; Christiansson, Tomas, Detection of surface contamination.
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Wassvik, Ola; Bergström, Håkan, Light coupling in TIR-based optical touch systems.
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Eliasson, Jonas Ove Philip; Larsen, Niels Agersnap; Bastue, Jens; Ostergaard, Jens Wagenblast Stubbe, Optical touchpad with three-dimensional position determination.
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Wall, Henrik, Partial detect mode.
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Kenney, Kevin M., Reinforced device housing.
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Kenney, Kevin M., Smooth composite structure.
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Wallander, Mats Petter; Bergström, Håkan, Spatial resolution in touch displays.
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Wassvik, Ola, TIR-based optical touch systems of projection-type.
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Christiansson, Tomas; Ohlsson, Nicklas; Andreasson, Markus, Tomographic processing for touch detection.
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Jakobsen, Michael Linde; Hanson, Vagn Steen Gruner; Pedersen, Henrik Chresten, Touch-sensitive device.
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Jakobsen, Michael Linde; Hanson, Vagn Steen Gruner; Pedersen, Henrik Chresten, Touch-sensitive device.
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Rönkä, Kari; Keränen, Antti; Aikio, Janne, User input arrangement and related method of manufacture.
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A	생활필수품
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[미국특허] Optical touchpad system and waveguide for use therein 원문보기