Visible light communication apparatus
US9553667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2014 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Sep 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/532
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A visible light communication apparatus includes a constant current circuit and a load circuit including light emitting elements connected to output terminals of the constant current circuit. Further, the visible light communication apparatus includes a load variation circuit configured to change load characteristics of the load circuit by electrically connecting to the load circuit, the load variation circuit including a series circuit of a diode and a resistor connected in series to the load circuit and a switching element configured to electrically connect or disconnect the load variation circuit to the load circuit in response to a binary communication signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.