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US6982639B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2002 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Jan 7, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/33
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for tracking a subject of interest in a location is disclosed. The system is used with subjects who have an identification device having a unique signal identifier. The system comprises a wireless proximity detector capable of detecting the signal identifier; a monitoring unit that monitors the proximity detector by monitoring which signal identifier has been detected by the proximity detector, the monitoring unit generating a data signal representative of which signal identifier has been detected; and a data output unit that generates location data based upon the data signal. The information can be displayed graphically or as a list and can be sorted by various criteria. The display can provide many options to make the display more useful. Also disclosed is a method for tracking a subject of interest using a unique signal identifier. Additionally, a display to be used with the system is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.