Expandable object tracking system and devices
US6891471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Oct 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/016
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An object tracking system is constructed by linking a plurality of devices. Each device includes an RF transceiver, memory, a user interface and a processor for coordination and management of these components. The devices are programmed to form a link with another compatible device by wirelessly exchanging their unique ID codes for storage in the other's memory. The devices are responsive to messages from each device whose ID is stored in memory. Responses may range from sounding an alarm to actuation of a switch to detection of the presence or absence of another linked device. The simple, linkable devices, permit construction of complex and flexible networks for the purposes of object tracking, proximity detection, remote actuation and more. Each of the operations including linking, unlinking and general action is initiated by a single key of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.