Position sensor
US-2015378517-A1 · Dec 31, 2015 · US
Optical touch system and touch sensing method
US9128564B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9128564-B2 |
| Application number | US-201314078532-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 13, 2013 |
| Priority date | May 7, 2013 |
| Publication date | Sep 8, 2015 |
| Grant date | Sep 8, 2015 |
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Abstract
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An optical touch system including a touch surface, a reflection structure and light source modules is provided. The reflection structure and the light source modules are disposed at a periphery of the touch surface. Each light source module has a light-emitting unit and a sensing unit. The sensing unit obtains a brightness value distribution of a sensing light emitted by the light-emitting unit after the sensing light is reflected by the reflection structure, so as to sense touch input. The periphery of the touch surface includes first and second sections. When the light-emitting unit located on the first section emits the sensing light, the sensing light is not reflected by the reflection structure at the light source modules located on the second section so that low-brightness areas are formed, and the light-emitting units of the second group emit compensation lights correspondingly. In addition, a touch sensing method is also provided.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical touch system, comprising: a touch surface; a reflection structure, disposed at a periphery of the touch surface and surrounding the touch surface; and a plurality of sensing modules, disposed at the periphery of the touch surface, wherein each of the sensing modules has a light-emitting unit and a sensing unit, each of the light-emitting units is adapted to emit a sensing light, and each of the sensing units is adapted to sense a brightness va…
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- G06F3/0428Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9128564B2 cover?
- An optical touch system including a touch surface, a reflection structure and light source modules is provided. The reflection structure and the light source modules are disposed at a periphery of the touch surface. Each light source module has a light-emitting unit and a sensing unit. The sensing unit obtains a brightness value distribution of a sensing light emitted by the light-emitting unit…
- Who is the assignee on this patent?
- Wistron Corp
- What technology area does this patent fall under?
- Primary CPC classification G06F3/0428. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 08 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).