Optical receiver for area location system
US5355222A · kind A · utility
68Cited by
18References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1992 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | May 15, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/784
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical location system for locating the position of a moving object in a defined area. An optical transmitter is attached to the moving object. A stationary receiver has a number of sensors for receiving a signal from the transmitter. One sensor has a field of view of the entire area. Other sensors have partially blocked fields of view, with the blocking being accomplished with nonopaque strips of decreasing width. These strips are arranged so that the detection or nondetection of light by the sensors can be digitally coded in a manner that corresponds to sections of the area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.