Multi-wavelength visible light communications systems and methods
AssigneeElwah LLC
InventorsRoderick A. Hyde, Jordin T. Kare
Life of this patent
Estimating the term…
Abstract
A system for transmitting data using light includes a plurality of light sources configured to transmit light at non-overlapping wavelengths, processing electronics, and a diffuser configured to diffuse the transmission of light. The processing electronics assign the plurality of light sources to a plurality of channels, accept a data stream, allocate the data stream to the channels, and modulate a transmission of the light using the allocated data stream, where the allocated data used to modulate a first light source of the plurality of light sources is separate from the allocated data used to modulate a second light source of the plurality of light sources.
Claims46
A system for optically transmitting data, comprising:
- a plurality of light sources configured to transmit light at non-overlapping wavelengths;
- processing electronics configured to:
- assign the plurality of light sources to a plurality of channels;
- accept a data stream;
- allocate the data stream to the channels;
- modulate a transmission of the light using the allocated data stream, wherein the allocated data used to modulate a first light source of the plurality of light sources is separate from the allocated data used to modulate a second light source of the plurality of light sources;
- and
- an optical spreader configured to spread the transmission of light.
9-11. (canceled)
14-15. (canceled)
(canceled)
(canceled)
27-51. (canceled)
A system for optically transmitting data, comprising:
- a non-monochromatic light source configured to emit a spectrum of light;
- a dispersive device configured to separate the spectrum of light into portions;
- a modulation device;
- processing electronics configured to:
- accept a data stream;
- allocate the data stream to at least two data channels;
- and
- control an emission of light by modulating the portions using the modulation device and the data channels, wherein each portion is modulated using a separate data channel.
60-64. (canceled)
66-67. (canceled)
69-82. (canceled)
A system for receiving multi-wavelength optical data, comprising:
- a filtering device configured to filter wavelengths of light;
- at least one photodetector configured to respond to wavelengths of light;
- and
- processing electronics configured to:
- accept analog data from at least one photodetector;
- convert the analog data to digital data;
- separate the digital data into data segments corresponding to the wavelengths;
- and
- arrange the data segments into data streams.
91-111. (canceled)
Dependencies are inferred from the claim text.