Personal security system with transmitter test mode
US5467074A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1993 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Sep 20, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/009
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A portable transmitter produces an emergency signal including a personal identification number and an auxiliary code. The auxiliary code may be a test bit which, when set, indicates that the emergency signal was activated in a test mode and that an emergency condition did not exist. Activation of the test mode is accomplished by the same systems required to activate the emergency signal to provide full testing. The transmitter is part of a security system including a plurality of portable transmitters and fixed receivers. The transceivers issue either an alarm activating signal or a test signal depending on the test bit in the auxiliary code. A successful test is discernible to the user from the vicinity of the transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.