Systems and methods for tracking an object
US7038589B2 · kind B2 · utility
39Cited by
12References
25Claims
0Family size
Inventors
Key dates
| Filing date | Nov 3, 2002 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Nov 3, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/1427
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A portable apparatus to track an object includes a transmitter adapted to sending pulses of known duration and intensity; a receiver having one or more antennas to receive the pulses of known duration and intensity from the transmitter, the receiver and the transmitter having synchronized clocks to determine signal propagation time and distance, and wherein an alarm is generated if the determined distance exceeds a preset value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.