| 摘要 |
A lighting system for using illumination light of light emitting diodes (LEDs) to provide one-way data communication to user mobile communication devices is described. The lighting system includes illumination lighting devices at different locations within an area to emit visible illumination light illuminating the area. Each illumination lighting device includes: one or more LEDs producing visible illumination light; and a device lighting control circuit that modulates the visible illumination light to carry data and to broadcast the data in an illuminated area of the respective illumination lighting device which is modulated to carry the data. Each illumination lighting device also includes a device memory to locally store the data which is modulated onto the visible illumination light; and a device memory control circuit that updates the data stored in the device memory. |
