Wireless activation system and method
US7227445B2 · kind B2 · utility
10Cited by
19References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2003 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Sep 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/00876
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for wireless activation of a target. A communication device transmits an ID associated with the target to a network operations center. The network operations center provides an activation signal to the communication device. The communication device wirelessly transmits an acoustic activation signal to a nearby activation device. The activation device is positioned proximate the target and causes a change in at least one physical property of the target. The target may be an optical media containing an electrochromic material with optical properties that change on application of an electric signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.