Illumination light communication apparatus and illumination light communication system using the same
US9413458B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2015 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Feb 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/116
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An illumination light communication apparatus includes: a light source; a power supply circuit; a switching element which modulates an output current supplied from the power supply circuit to the light source; a visible light communication signal circuit which controls ON and OFF of the switching element to output a modulating signal for superimposing a visible light beacon signal including a unique ID onto the illumination light emitted from the light source; a control power supply circuit which supplies power to the visible light communication signal circuit; a wireless module which transmits a radio wave beacon signal including a unique ID; and a radio wave beacon controlling and transmitting circuit which controls the radio wave beacon signal transmitted from the wireless module, wherein the radio wave beacon controlling and transmitting circuit is supplied with power from the control power supply circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.