Abstract:
L'invention propose u n système d'immersion d'au moins un premier utilisateur (1) dans une réalité virtuelle ou augmentée comprenant un espace d'immersion (2) dans lequel peut se déplacer ledit au moins un premier utilisateur (1). Selon l'invention le système comprend : - un dispositif de réception optique (11) porté par ledit premier utilisateur, - des moyens de traitement (3) comprenant : - des moyens de génération d'un premier flux multimédia immersif destiné audit premier utilisateur (11) en fonction des mouvements de ce dernier, - des moyens de transmission optique (TxO 1 , TxO 2 ... TxO n ) d'un signal optique multiplexé (λ 1 , λ 2 ...λ n ) vers au moins une borne d'accès optique (PAO), ladite borne d'accès optique (PAO) étant disposée dans ledit espace d'immersion (2) de façon à former une cellule optique (CEO) s'étendant dans ledit espace d'immersion (2), ledit dispositif de réception optique (11) comprenant a) des moyens de réception du signal optique multiplexé (λ 1 , λ 2 ...λ n ) depuis ladite borne d 'accès optique (PAO) via une liaison optique sans fil lorsque ledit premier utilisateur (1) se situe dans la cellule optique (CEO), et b) des moyens de filtrage configurés pour extraire le premier flux multimédia immersif destiné au premier utilisateur (1) à partir du signal optique multiplexé (λ 1 , λ 2 ...λ n )·
Abstract:
A transmitting device comprising: a transmitter for transmitting data to a receiving device; and a controller for formatting the data to be transmitted from the transmitter, by dividing the data amongst a plurality of packets. The controller is configured to package each respective one of the packets with only a respective portion of an index sequence as an identifier field for distinguishing between the packets within the sequence, wherein at least one of the portions is alone insufficient to identify its respective packet. The controller is further configured to control the transmitter to transmit the packets including the respective portions of the index sequence, ordered such that the index sequence repeats cyclically over the transmission of the packets; thereby enabling the receiving device to determine a respective position in the index sequence for each of the packets by referencing a plurality of the portions together, and to thereby identify the packets.
Abstract:
Techniques are disclosed for spatially resolving received light-based communication (LCom) signals. In an example case where one or more LCom signals are in the field of view (FOV) of an LCom receiver, the image representing the FOV may be captured and segmented into non-overlapping cells, such as hexagonal, triangular, rectangular, or circular shaped cells. Each LCom signal may be interpreted as a unique pixel cluster comprising one or more of the cells. In some cases, the LCom signals in the FOV may be received from multiple LCom-enabled luminaires and/or a single LCom-enabled luminaire having multiple light panels. The benefits may include establishing a link with multiple LCom signals within the FOV of a receiver without conflict and/or determining the location of those LCom signals, improving signal to noise ratio, augmenting position information, enhancing sampling frequency, and improving communication speed.
Abstract:
A system for transmitting and receiving electromagnetic radiation includes a beam splitter and a transceiver. The beam splitter is configured to separate an optical pulse into a pump pulse and a probe pulse. The transceiver may include a transmitter switch and a receiver switch. The pump pulse is directed toward the transmitter switch and the probe pulse is directed towards the receiver switch. Electromagnetic radiation is emitted from the transceiver when the pump pulse strikes the transmitter switch. The electromagnetic radiation may be terahertz radiation in either a pulsed or continuous wave form.
Abstract:
Methods and a system for enrolling nodes into an ad hoc network associated with a multi-roomed structure. Nodes within the ad hoc network comprise a communication module configured to communicate with the ad hoc network using at least one of room- limited communications and room-transparent communications.