Systems and methods for visible light communication
US8521035B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Apr 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/40273
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for visible light communication are disclosed. In part, illumination devices and related systems and methods are disclosed that can be used for general illumination, lighting control systems, or other applications. The illumination devices synchronize preferentially to the AC mains to produce time division multiplexed channels in which control information can be communicated optically by the same light source that is producing illumination. Such illumination devices preferentially comprise LEDs for producing illumination, transmitting data, detecting ambient light, and receiving data, however, other light sources and detectors can be used. The physical layer can be used with a variety of protocols, such as ZigBee, from the Media ACcess (MAC) layer and higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.