Coded light transmission and reception
US8660436B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2010 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Feb 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/198
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Coded light has been proposed to enable advanced control of light sources and transmit information using light sources. An assignment for the identification frequencies of light sources enables more unique frequencies to be assigned, i.e. more light sources to be uniquely identified in the system. An available frequency band is divided into non-uniform frequency regions and frequencies are selected from a set of uniformly spaced frequencies in the non-uniform frequency regions. A receiver is based on a successive approach and is enabled to analyze higher harmonics of the received light signals. The light contributions are successively estimated group by group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.