Position detection system
US7453582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2008 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Jan 28, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/8029
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Positions of a plurality of objects in a space are detected. A position of reflected light of an object passing through an infrared screen is specified by analyzing an image obtained by selectively imaging the infrared rays. When the infrared screen is formed in front the display, reflected light is only caused just in front of the display. When the infrared rays are selectively imaged, a picture displayed with visible light is separated from reflected light in the infrared region, and only the reflected light can be imaged. A position of the reflected light on the display can be specified by a publicly known image analysis technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.