Positioning system using infrared radiation
US5796387A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1994 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Aug 16, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/305
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A positioning controller having a receiving side for receiving light from a light source is disclosed. The receiving side includes an axis extending perpendicularly therefrom, and a vertical plane and a horizontal plane intersecting at the axis. The positioning controller includes three sensors. The reference sensor is positioned between the other two sensors, and is masked to receive light within a predetermined range of acute angles measured from the axis. One of the other two sensors is a vertical angle sensor that is masked to receive a larger quantity of light from a first side of the horizontal plane and from a second side of the horizontal plane. The third sensor is a horizontal angle sensor that is masked to receive a larger quantity of light from a first side of the vertical plane than from a second side of the vertical plane. The positioning controller further includes circuitry for determining an orientation of the positioning controller using the amounts of light received by the reference sensor, the vertical angle sensor, and the horizontal angle sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.