Signify Holding B.v.

Philips Lighting Holding B.v.

Onno Martin Janssen

Stephanus Joseph Johannes Nijssen

Frederik Jan De Bruijn

Mark Henricus Verberkt

Xiangyu Wang

Engel Johannes Knibbe

Emmanuel David Lucas Michael Frimout

Hans Van Amstel

Lorenzo Feri

Tommaso Gritti

Petrus Johannes Lenoir

Gerardus Cornelis Petrus Lokhoff

Peter Hoekstra

Benjamin Johannes Vos

Andreas Felix Alfred Bluschke

Peter Johannes Lenoir

Pamungkas Prawisuda Sumasta

This invention relates to optical wireless communication systems that use radiation beams for communication. In such systems aiming at the communication partner is not easy especially if the distance between the communication devices is longer and radiation in the non-visible range is used. It is proposed to use an adaptive signal quality indicator in order to provide installing persons and users with a quick and deterministic way of aligning the communication devices.

Adaptive alignment of optical wireless communication devices

The invention relates to a system and methods for providing conditional access to indoor location information in a system comprising a mobile device (), a positioning webservice () and an authorization authority (), the method comprising: the mobile device () performing the steps of: transmitting license information to the authorization authority () and transmitting a request for indoor location information to the positioning webservice, the request comprising a request-location-estimate corresponding to a location estimate of the mobile device () at the time of making the request, the authorization authority () performing the steps of: receiving the license information, verifying whether the license information authorizes access to indoor location information by the mobile device (), issuing a secure proof, verifiable by the positioning webservice () upon successful verification, the secure proof indicating that the license information authorizes access to indoor location information by the mobile device () for an authorized region; the positioning webservice () performing the steps of: receiving the request for indoor location information and the secure proof; verifying whether the secure proof authorizes the transmission of indoor location information to the mobile device () for the request-location-estimate; and upon successful verification sending indoor location information for the request-location-estimate to the mobile device ().

Methods and systems for providing conditional access to indoor location information

Multiple luminaires are mounted contiguously in a plane, along a straight line or following a one or two dimensional contour, but with a visible periphery between each adjacent pair. A different signal is embedded into the visible illumination emitted by each luminaire, which an image processing module can detect from one or more images captured by a camera. An angle-dependent mask is arranged to cover at least the periphery between adjacent luminaires, such that an appearance of the periphery when viewed from the environment through the mask varies as a function of viewing angle, becoming less visible at greater values of viewing angle (being the angle between a corresponding viewing direction and a normal to the plane, line or contour). The image processing module distinguishes between the different signals based on the periphery being visible when captured from less than a predetermined value of the viewing angle.

Detecting signals embedded in visible light

The present invention relates to a mobile device for detecting light. The mobile device () includes a photo detector () which is arranged at the end of a socket barrel () of an audio jack socket in the mobile device. The socket barrel serves to collimate the light onto the photo detector.

Detecting light

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Geldrop, Netherlands

Onno Martin Janssen