US 12,267,107 B2
Face detection and optical wireless communication module
Bastien Bechadergue, Malakoff (FR); Carlos Dominguez-Gonzalez, Sèvres (FR); Clément Lartigue, Clamart (FR); and Benjamin Azoulay, Paris (FR)
Assigned to OLEDCOMM, Vélizy Villacoublay (FR)
Appl. No. 17/619,132
Filed by OLEDCOMM, Vélizy Villacoublay (FR)
PCT Filed Jun. 16, 2020, PCT No. PCT/EP2020/066623
§ 371(c)(1), (2) Date Dec. 14, 2021,
PCT Pub. No. WO2020/254321, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 1906600 (FR), filed on Jun. 19, 2019.
Prior Publication US 2022/0358785 A1, Nov. 10, 2022
Int. Cl. H04B 10/114 (2013.01); G06V 10/143 (2022.01); G06V 40/16 (2022.01)
CPC H04B 10/1143 (2013.01) [G06V 10/143 (2022.01); G06V 40/166 (2022.01); G06V 40/172 (2022.01)] 14 Claims
OG exemplary drawing
 
1. A detection and communication module arranged to implement a face detection function and an optical wireless communication function, and comprising a processing unit, a transmission chain comprising a transmission analog front-end circuit and a light source, and a reception chain comprising a reception analog front-end circuit and a photoreceiver,
the processing unit being arranged to transmit via the transmission chain a detection signal, to receive via the reception chain the detection signal following its reflection on a surface of the face of an individual, to measure a time of flight of the detection signal, and to evaluate a distance between the detection and communication module and the surface of the face of the individual,
the processing unit being further arranged to transmit via the transmission chain a transmitted optical wireless communication signal containing data to be transmitted, and to receive via the reception chain a received optical wireless communication signal,
wherein the detection signal and the transmitted optical wireless communication signal are included in a single mixed signal that comprises packets each comprising a detection frame, a communication preamble, and a communication frame comprising the data to be transmitted,
wherein the detection frame comprises a binary signal having high autocorrelation and comprising a pseudo-random noise code, and
wherein the optical wireless communication function is used to define the pseudo-random noise code assigned to the detection and communication module.