Electronic tether for portable objects
US7042360B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 4, 2004 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Aug 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/0275
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method for issuing an alarm when the separation distance between a monitoring module associated with an object (animate or inanimate) and an alert module exceeds a preset threshold distance thereby forming a leadless electronic tether between the object and the object owner. A monitoring module comprises a portable transmitter provides a signal to an alert module comprising a receiver and a processor. The alert module is adapted to determine a separation distance between the monitoring module and the alert module based on an attribute of the signal. When the separation distance exceeds a predetermined threshold, the alert module issues an alert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.