Electrographic position location apparatus and method
US7499036B2 · kind B2 · utility
20Cited by
55References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2003 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Jul 11, 2025 |
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.