Method and apparatus for correcting color imbalance of visible light in wavelength division parallel visible light communications
US7889999B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2008 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Aug 26, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/1141
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus for correcting a color imbalance of visible light in wavelength division parallel visible light communications (VLC). The method includes the steps of: transmitting a visible light signal including information from a VLC transmitter to a VLC receiver during a preset correction unit, and setting correction bits corresponding to a basis for correcting a color imbalance by each of wavelengths of the VLC transmitter A generating of a first adjustment light corrects the color imbalance between the wavelengths from the VLC transmitter during a preset color adjustment period, and generating of a second adjustment light corrects a color imbalance between a previous correction unit and a current correction unit from the visible light communication transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.