An optical wireless communication system comprising a transmitter apparatus that comprises: an illumination light source configured to output visible light for illumination purposes, and a controller configured to control operation of the illumination light source to produce modulation of the visible light to provide an optical wireless communication signal representing data; a further light source configured to output further light, wherein the controller is configured to control operation of the further light source to produce modulation of the further light to provide a further optical wireless communication signal representing substantially the same data, wherein the visible light and the further light have different wavelengths.

An optical wireless communication (OWC) transmitter comprising a baseband chip comprises: a media access control (MAC) layer configured to receive data from a network; a first physical (PHY) layer associated with a first light source; and a second physical (PHY) layer associated with a second light source; wherein the first PHY layer is configured to receive first data from the MAC layer and provide a first signal to the first light source, so as to drive the first light source to emit first modulated light that comprises or is representative of the first data; and the second PHY layer is configured to receive second data from the MAC layer and provide a second signal to the second light source, so as to drive the second light source to emit second modulated light that comprises or is representative of the second data.

A system to communicate via modulated optical signals of the Li-Fi signal type to transmit data to and from a plurality of defined privileged spaces. The communicating system includes a plurality of first light sources, each first light source emitting, in the infrared, a first modulated optical signal. A plurality of optical fibers, each optical fiber guiding the first modulated optical signal from a single first light source in the direction of an optical interface. The optical interface transmitting the first modulated optical signal into a defined privileged space. Each optical fiber also transporting a second modulated optical signal from the associated defined privileged space in the direction of a device configured to acquire the second modulated optical signal.

In an example implementation according to aspects of the present disclosure, a method may include receiving, at an optical receiver of a first device, a transmission signal from an optical transmitter source of a second device. The method may include decoding the transmission signal to generate a pairing code, and using the pairing code to pair the first and second devices together for wireless communication. The method may include granting a level of access control of the first device to the second device via the wireless communication, wherein the level of access control is based on the pairing code.

A method and system for managing interference between transmission sources in an Optical Camera Communication (OCC) network is disclosed. The method includes receiving interference information associated with a set of transmission sources. Each of the set of transmission sources include a set of light sources configured to display one of a plurality of colors. The method further includes assigning a unique guard band to each of the set of transmission sources. The method includes sharing details of the unique guard band assigned to a first transmission source within the set of transmission sources with the camera. The camera is configured as the receiver of the first transmission source. The method further includes instructing the camera to accept data transmitted by the first transmission source based on the assigned unique guard band and drop data transmitted by the remaining set of transmission sources.

A method of communicating information via optical data transmission between two utility vehicles includes providing a control unit on a first utility vehicle, a work light on the first utility vehicle, and a second utility vehicle. The method also includes generating activation signals by the control unit of the first utility vehicle in dependence on transmission data to be transmitted, activating the work light by the activation signals, and emitting light signals via the activated work light to the second utility vehicle. The light signals represent the transmission data.

A communication system includes a seat unit mounted on a seat of a vehicle and operating by an electrical power supplied from a battery, and a vehicle unit that wirelessly communicates with the seat unit, and transmits a start command. The seat unit receives the start command in a standby state in which a power consumption is lower than a normal state, and then the seat unit switches from the standby state to the normal state. After that, the seat unit transmits an information on an electronic device mounted on the seat, in the normal state. According to the communication system, the seat unit switches from the standby state to the normal state, only when the vehicle unit transmits the start command. Therefore, battery life can be extended.

A visible light audio system is operable to enable free space optical communication of audio signals via transmission of modulated light intensity at a light source to a photo diode being operably engaged with a demodulator and audio output device. Embodiments of the present disclosure enable a plurality of visible light transmitting apparatuses being installed in a commercial or residential dwelling and operably engaged over a network to combine their microphone inputs via spatial, amplitude, spectral, and/or temporal filtering and physical and geometrical modeling methods to separate one or more acoustic sources using a visible light audio system comprising an array of light sources being operable to receive an audio source input.

The present invention discloses a Bluetooth mesh network system having quick provisioning mechanism that includes an infrared control apparatus and nodes. The infrared control apparatus generates a provisioning activation infrared signal. Each of the nodes receives the provisioning activation infrared signal and generates a group key according to predetermined group number information thereof to perform communication according to the group key based on a Bluetooth mesh network communication protocol.

Systems and methods for communicating using both radio frequency (RF) communication and light communication (LC) are disclosed. An example device comprises radio frequency communication circuitry, a light communication transmitter; a light communication receiver; a processor for controlling the device according to executable code; and memory for storing data and executable code, wherein the executable code comprises instructions for causing the processor to establish RF communication with an RF access point using the RF communication circuitry; and to establish LC communication with an LC access point using the LC transmitter, the LC receiver, or both.