Location system and communication
US7388464B2 · kind B2 · utility
20Cited by
8References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2002 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Jan 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S11/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A location system comprises a plurality of transponders whose locations are detectable by a base system. The base system interrogates (51-55) the transponders one at a time in accordance with a schedule of consecutive time slots. In response to a priority request received (53) from one of the transponders, the base system interrupts the schedule and interrogates substantially immediately (56,57,55) the signalling transponder so as to determine its location with minimal latency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.