Visible light communication apparatus and visible light communciation method
US8630549B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2009 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | Jul 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/1141
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The visible light communication apparatus includes: a brightness signal generator that calculates a duty cycle of an driving signal corresponding to brightness requirement information and generates clock frequency information on brightness signals based on the calculated duty cycle; a transmission data generator that generates transmission data; an illumination driver that generates and outputs an driving signal in a pulse waveform based on the clock frequency information of the brightness signals and the transmission data and controls a pulse position of a turn on section for each bit unit time in the waveform of the driving signal based on the transmission data; and an illumination that is operated according to the driving signal from the illumination driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.