Electrographic position location apparatus and method
US6661405B1 · kind B1 · utility
28Cited by
51References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 19, 2000 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/29
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for use in an electrographic position sensing system comprises an antenna system and a signal strength detector. In one embodiment, the antenna system comprises two antennas. The detector measures the signal strength from each antenna. A microprocessor contains an algorithm to calculate the position of the detector near the antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.