Apparatus and method for transmitting and receiving an information symbol in a visible light communication system for color code modulation
US8195054B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2009 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Dec 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/116
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A visible light communication system and method for transmitting and receiving an information symbol in a visible light communication system for a Color Code Modulation (CCM) scheme using a chromaticity diagram. The method includes determining a first coordinates value corresponding to an information symbol to be transmitted on the chromaticity diagram; determining a first color ratio corresponding to the first coordinates value; determining a second coordinates value corresponding to a compensation symbol for compensating for the first color ratio into a color white and determining a second color ratio corresponding to the second coordinates value; and emitting a visible ray corresponding to each of the first color ratio and second color ratio. The first and second coordinates values are located on a line on the chromaticity diagram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.