System and method of super synchronization in RTLS
US9219984B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2013 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Feb 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
System and method for wireless infrared-aided location, including: a portable tag to be located, the portable tag comprising an infrared (IR) receiver; and a plurality of base-stations, at least one of said base-stations comprising: a processor coupled to a memory; a first clock coupled to the processor, the first clock configured to be selectively activated and deactivated by the processor; a receiver coupled to the processor, the receiver configured to receive a periodic timing synchronization signal; and an infrared transmitter coupled to the processor, the infrared transmitter configured to transmit an IR signal to the portable tag, wherein the IR signal is substantially identical and in-phase with IR signals from other base-stations, wherein the processor is configured to synchronize said base-station to the periodic timing synchronization signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.