Tamper monitoring system and method
US7471203B2 · kind B2 · utility
29Cited by
41References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2006 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Dec 4, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F3/0358
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A tamper monitoring system includes at least one active tag and a transmission link. The one active tag includes a transmitter and a receiver. The first end of the transmission link is connected to the transmitter and the second end is connected to the receiver. The transmitter is designed to transmit a non-constant signal to the transmission link to the receiver, and the receiver is designed to receive a signal from the transmission link and to correlate the received signal with the transmitted signal. When the received signal does not correlate with the transmitted signal, the active tag transmits a tamper beacon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.