Object position detection apparatus and display method using the same
US-2024329826-A1 · Oct 3, 2024 · US
Touch surface with variable refractive index
US9035909B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9035909-B2 |
| Application number | US-201013395254-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 9, 2010 |
| Priority date | Sep 11, 2009 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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Abstract
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An apparatus for determining a location of at least one object on a touch surface, comprising: a light transmissive panel defining the touch surface and including a controllable reflective boundary; an illumination arrangement configured to introduce light into the panel; a control device configured to selectively control the reflective boundary such that the light may pass between a first layer and a second layer via an opening in the reflective boundary; a light detection arrangement configured to measure the light passed via the opening and impinged on the touch surface; and a processor unit configured to determine the location as a function of the measured light passed via the opening and the selective control of the reflective boundary. A method and computer readable medium is also described.
First claim
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The invention claimed is: 1. An apparatus for determining a location of at least one object on a touch surface, the apparatus comprising: a light transmissive panel defining the touch surface and comprising a first layer and a second layer arranged intermediate the touch surface and an opposite surface, a controllable reflective boundary formed between the first layer and the second layer, an illumination arrangement configured to introduce light into the panel for propagation…
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- G06F3/0421Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US9035909B2 cover?
- An apparatus for determining a location of at least one object on a touch surface, comprising: a light transmissive panel defining the touch surface and including a controllable reflective boundary; an illumination arrangement configured to introduce light into the panel; a control device configured to selectively control the reflective boundary such that the light may pass between a first laye…
- Who is the assignee on this patent?
- Christiansson Tomas, Flatfrog Lab Ab
- What technology area does this patent fall under?
- Primary CPC classification G06F3/0421. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 19 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).