Purelifi Limited

Christopher Nigel Tate

Duncan John William Walker

Luca Carraro

Mostafa Afgani

Istvan Phillipe Bernard Csajaghy

Arne Rossius

Tamas Weszely

Istvan Philipe Bernard Csajaghy

Steven Alexander Richard Ritchie

An optical wireless communication (OWC) unit for transmitting and/or receiving data installable in a further device comprises at least one transmitter device for transmitting modulated light comprising an OWC signal of said data and/or at least one receiver device for receiving modulated light comprising an OWC signal representative of said data, wherein the at least one receiver device comprises at least one detector. The OWC unit further comprises analogue electronic circuitry for processing electronic signals and at least one power connection and/or at least one data connection for connection to a power source and/or processing resource of the further device. The OWC unit is operable to provide OWC communication under control of said further device and/or so as to transmit data from/provide data to said further device. The OWC unit is for use in an OWC system having an analogue bandwidth greater than or equal to 80 MHz.

Optical wireless communication (OWC) unit

An optical wireless communication (OWC) device comprises: a receiver comprising: a dual-wavelength filter configured to filter light arriving at the receiver, wherein the dual-wavelength filter is configured to pass light of a first frequency and light of a second, different frequency, and wherein the dual-wavelength filter is configured to substantially block light of a third frequency between the first frequency and second frequency; and a photodetector configured to receive the filtered light and to sense modulated light of the first frequency and/or modulated light of the second frequency to produce at least one receiver signal; demodulation circuitry and a processing resource for performing a demodulation and processing with respect to the at least one receiver signal to obtain data encoded in the modulated light of the first frequency and/or data encoded in the modulated light of the second frequency; a transmitter comprising a light source configured to output modulated light of the third frequency; a further transmitter comprising a further light source configured to output modulated light of the second frequency; and a controller configured to control operation of the transmitter and/or further transmitter to produce an output OWC signal in which data is encoded by modulation of light emitted by the light source and/or further light source.

Optical wireless communication system and method

Growing community of inventors

Edinburgh, United Kingdom

Christopher Nigel Tate