System for locating an object
US5686891A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/023
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system for locating an object. The system includes an electronic device, a wireless transmitter for outputting a transmitted signal, and a receiver wherein one of the receiver or the transmitter is mounted within the electronic device and the other is positioned remote therefrom. The receiver comprises a wake up timer circuit for periodically generating a wake up signal, a wireless signal receiver being activated by the receipt of the wake up signal from the wake up timer circuit for generating a detect signal when the wireless signal receiver circuit receives the transmitted signal from the transmitter; and an audible signal generator circuit for generating an audible signal upon receipt of the detect signal from the wireless signal receiver circuit. The wake up timer circuit and the wireless signal receiver circuit are disabled when the audible signal generator circuit generates the audible signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.