System for controlling remote speakers using centralized amplifiers, centralized monitoring and master/slave communication protocol
US7197148B2 · kind B2 · utility
166Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2002 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Jan 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2227/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for providing a centralized speaker system that allows multiple speakers connected to a central amplifier speaker line to be monitored and controlled from a central location via a master/slave protocol. The centralized speaker system comprises a central station for selectively communicating at least one of a command and an information signal to a destination device. A tone generator is adapted to communicate an activation tone to the destination device. An amplifier, which is colocated with the central station, is adapted to amplify the signals to the destination device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.