Dual-use electronic transceiver set for wireless data networks
US6426599B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2001 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Jan 26, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/195
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus for generating electromagnetic radiation in which the radiation has both a first and second utility. The electromagnetic radiation is modulated to produce electronically detectable variations to achieve the second utility, the variations not affecting the first utility. In one embodiment, the electromagnetic radiation is visible light. In this embodiment, the first utility is illumination and the second utility is the transmission of data. In another embodiment, the invention provides a lamp for generating visible light capable of providing illumination and transmitting data to a receiver. Any variations in the visible light resulting from the data transmission are imperceptible by a human eye regardless of the nature of the data being transmitted. In yet another embodiment, a power line carrier modem may be used with the present invention to transmit information to the source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.