Abstract: A lighting device comprising a controller arranged to convey a cryptographic message to a load indicative of an instruction for said load to consume an amount of power during a selected time-interval; determine the power consumed during said selected time-interval and determine a condition indicative of an unauthorized load when said determined power is different from one which is expected.

Abstract: A method (300) for determining temperature in a region (220/230) of an environment (200) by compensating for heat-up of a temperature sensor caused by ambient air and/or electronic heating, using a system (100) comprising: (i) a structure (110); (ii) a controller (130); and (iii) a temperature sensor (120), the method comprising: obtaining (320) first temperature measurements while the structure is in a first operating mode; changing (330) the first operating mode of the structure to a second operating mode; obtaining (340) second temperature measurements while the structure is in the second operating mode; determining (350) a temperature correction comprising an effect of the second operating mode on the temperature sensor; obtaining (360) a new temperature measurement during operation of the structure in the second operating mode; and adjusting (370), using the temperature correction, the new temperature measurement to generate a compensated temperature measurement.

Abstract: A lighting device comprising a controller arranged to convey a cryptographic message to a load indicative of an instruction for said load to consume an amount of power during a selected time-interval; determine the power consumed during said selected time-interval and determine a condition indicative of an unauthorized load when said determined power is different from one which is expected.

Abstract: There is provided a driver having a primary output, for a primary load, and an auxiliary output, for an auxiliary load. A power supply of the driver supplies power to both outputs. Connection or disconnection of an auxiliary load is determined by detecting a change in power consumption at the auxiliary output, and an action is performed by a driver controller in response to this change in power consumption.

Abstract: A device, method and computer program for determining the distance or position of a camera relative to a light source based on an image of that light source captured by the camera. The device comprises a coded light detection module for detecting a coded light signal modulated into the light from the light source. The coded light detection module is configured to retrieve one or more physical dimensions of the light source based on the coded light signal from that light source. Further, the device comprises an image analysis module configured to determine a distance of the camera from the light source, by performing a geometric perspective calculation to compare the one or more retrieved physical dimensions with one or more apparent dimensions of the image of the light source.

Abstract: There is provided a driver having a primary output, for a primary load, and an auxiliary output, for an auxiliary load. A power supply of the driver supplies power to both outputs. Connection or disconnection of an auxiliary load is determined by detecting a change in power consumption at the auxiliary output, and an action is performed by a driver controller in response to this change in power consumption.

Abstract: This invention relates to a method for transmitting a message to a wireless device, the wireless device comprising a set of at least two distinct logical entities, the wireless device being arranged for receiving a message during discontinuous reception opportunities, the method comprising, prior to transmission of the message, the steps of (a) selecting a transmission mode from a set of transmission modes comprising a first transmission mode and a second transmission mode, where, in the first transmission mode, the reception opportunities for the message are limited to the reception opportunities that are associated with a single selected logical entity of the set of at least two logical entities, and in the second transmission mode, the reception opportunities for the message correspond to combined reception opportunities associated with at least two logical entities; and (b) causing the transmission of the message during one of the reception opportunities corresponding to the selected transmission mode.

Abstract: The invention relates to a proxy node comprising means for managing a proxy table, a receiver for receiving a message from a first resource restricted device, said message being intended to at least one corresponding destination device, control means for checking whether an entry for the first resource restricted device is included in the set of entries of the proxy table, the set of entries of the proxy table indicating the set of resource-restricted devices the proxy node is in charge of, a transmitter for forwarding the message depending on the result of the proxy table checking, the means for managing the proxy table being arranged for cleaning the proxy table of the entry relative to the resource-restricted device by monitoring the relative usage of the proxy node for forwarding messages for the resource restricted device with the usage of competitor proxy nodes for forwarding messages for the resource restricted device.

Abstract: The present invention relates to a system and method for managing proxy device assignment in a wireless communication network where proxy devices operate as relay devices forwarding signals from a resource restricted device to a destination device. The method comprises dividing an identifier space of the resource restricted device into at least two parts, and assigning at least one of the at least two parts of the identifier space to at least one proxy device of the wireless communication network wherein the proxy device assigned to a first part of the identifier space is responsible for the resource restricted device transmitting a signal comprising an identifier falling within the first part of the identifier space.

Abstract: The invention relates to a user-operated device, a method and computer program for providing acknowledgement indicators performed by a user-operated device within a communication network. The user-operated device for receiving user input to trigger in a user-perceivable reaction of the user-operated device or a system controlled by it, the user-operated comprising means for detecting an actuation pattern of the user-operated device upon actuation of a user; means for comparing the detected actuation pattern with a predetermined pattern; and means for generating an acknowledgement indicator in dependence of a comparison result of the actuation pattern with the predetermined pattern.

Abstract: This invention generally relates to interference mitigation, and more specifically to interference mitigation in wireless communications networks. The proposed solution takes advantage of the clear channel assessment (CCA) function used by WLAN networks. Hence, by jamming the interfering WLAN channel during a predetermined time period, the interfering WLAN network is forced to withhold transmissions on the WLAN interfering channel during a backoff period of time. The solution of the subject application makes use of this backoff period to enable a WPAN network to transmit critical information such as, but not limited to, a request for changing the current working frequency.

Abstract: In a wireless environment, a dockee informs a docking station of the dockee's access point connection credentials and parameters in order for the docking station to become an intermediate proxy for the connection between the dockee and the access point. The docking station takes over the connection between the dockee and the access point.

Abstract: The invention relates to a user-operated device, a method and computer program for providing acknowledgement indicators performed by a user-operated device within a communication network. The user-operated device for receiving user input to trigger in a user-perceivable reaction of the user-operated device or a system controlled by it, the user-operated comprising means for detecting an actuation pattern of the user-operated device upon actuation of a user; means for comparing the detected actuation pattern with a predetermined pattern; and means for generating an acknowledgement indicator in dependence of a comparison result of the actuation pattern with the predetermined pattern.

Abstract: The invention relates to a proxy node comprising means for managing a proxy table, a receiver for receiving a message from a first resource restricted device, said message being intended to at least one corresponding destination device, control means for checking whether an entry for the first resource restricted device is included in the set of entries of the proxy table, the set of entries of the proxy table indicating the set of resource-restricted devices the proxy node is in charge of, a transmitter for forwarding the message depending on the result of the proxy table checking, the means for managing the proxy table being arranged for cleaning the proxy table of the entry relative to the resource-restricted device by monitoring the relative usage of the proxy node for forwarding messages for the resource restricted device with the usage of competitor proxy nodes for forwarding messages for the resource restricted device.

Abstract: This invention relates to a method for transmitting a message to a wireless device, the wireless device comprising a set of at least two distinct logical entities, the wireless device being arranged for receiving a message during discontinuous reception opportunities, the method comprising, prior to transmission of the message, the steps of (a) selecting a transmission mode from a set of transmission modes comprising a first transmission mode and a second transmission mode, where, in the first transmission mode, the reception opportunities for the message are limited to the reception opportunities that are associated with a single selected logical entity of the set of at least two logical entities, and in the second transmission mode, the reception opportunities for the message correspond to combined reception opportunities associated with at least two logical entities; and (b) causing the transmission of the message during one of the reception opportunities corresponding to the selected transmission mode.

Abstract: A luminaire is provided for use in determining an orientation of a camera based on an image of the luminaire captured by the camera. The luminaire comprises a light source having an on state in which it emits light and an off state in which it does not emit light, and being of a shape having a symmetry in the off state. The luminaire also comprises a controller configured to control the light source to emit said light in the on state with a lighting effect that breaks said symmetry. A device comprising receives an image of the light source from a camera, and determines an orientation of the camera relative to the light source by performing a geometric perspective calculation based on the image of the light source. An ambiguity in the orientation is resolved by detecting the asymmetry in the light emitted by the light source.

Abstract: This invention relates to a method for transmitting a message to a wireless device, the wireless device comprising a set of at least two distinct logical entities, the wireless device being arranged for receiving a message during discontinuous reception opportunities, the method comprising, prior to transmission of the message, the steps of (a) selecting a transmission mode from a set of transmission modes comprising a first transmission mode and a second transmission mode, where, in the first transmission mode, the reception opportunities for the message are limited to the reception opportunities that are associated with a single selected logical entity of the set of at least two logical entities, and in the second transmission mode, the reception opportunities for the message correspond to combined reception opportunities associated with at least two logical entities; and (b) causing the transmission of the message during one of the reception opportunities corresponding to the selected transmission mode.

Abstract: The invention relates to a proxy node comprising means for managing a proxy table, a receiver for receiving a message from a first resource restricted device, said message being intended to at least one corresponding destination device, control means for checking whether an entry for the first resource restricted device is included in the set of entries of the proxy table, the set of entries of the proxy table indicating the set of resource-restricted devices the proxy node is in charge of, a transmitter for forwarding the message depending on the result of the proxy table checking, the means for managing the proxy table being arranged for cleaning the proxy table of the entry relative to the resource-restricted device by monitoring the relative usage of the proxy node for forwarding messages for the resource restricted device with the usage of competitor proxy nodes for forwarding messages for the resource restricted device.

Abstract: This invention generally relates to interference mitigation, and more specifically to interference mitigation in wireless communications networks. The proposed solution takes advantage of the clear channel assessment (CCA) function used by WLAN networks. Hence, by jamming the interfering WLAN channel during a predetermined time period, the interfering WLAN network is forced to withhold transmissions on the WLAN interfering channel during a backoff period of time. The solution of the subject application makes use of this backoff period to enable a WPAN network to transmit critical information such as, but not limited to, a request for changing the current working frequency.

Abstract: Methods, apparatus, and systems are disclosed herein for projecting lighting effects (124, 224, 324, 424) carrying light messages onto surfaces. A first of one or more light-emitting diodes (LEDs, 554) of a lighting fixture (120, 220, 320, 420, 520) may be selectively energized to produce a first coded light signal conveying a first light message associable with a first location. Light emitted from the first LED may be projected onto a first surface, e.g., as a spatially-limited lighting effect. In some embodiments, a second of the one or more LEDs of the lighting fixture may be selectively energized to produce a second coded light signal conveying a second light message associable with a second location distinct from the first location. Light emitted from the second LED may be projected onto the first surface or a second surface. Alternatively, lighting effects of various shapes and hues may convey information.