Patent application number | Description | Published |
20100225245 | DIRECTION CONTROLLABLE LIGHTING UNIT WITH ULTRASOUND - A direction controllable lighting unit | 09-09-2010 |
20100312071 | CAPACITIVE SENSING AND COMMUNICATING | 12-09-2010 |
20100315206 | ELECTRODE DIVERSITY FOR BODY-COUPLED COMMUNICATION SYSTEMS - The present invention relates to coupler device, processing apparatus and method of processing a plurality of body-coupled communication signals which have been detected by using an electrode arrangement with a plurality of electrodes or electrode segments ( | 12-16-2010 |
20100327754 | ADAPTIVE MODULATION AND DATA EMBEDDING IN LIGHT FOR ADVANCED LIGHTING CONTROL - This invention relates to a method for controlling a light output signal emitted by a set of light sources comprising at least one light source, wherein said light output signal comprises a modulation signal which carries individual information, the method comprising recurrently: remotely detecting the light output signal of said set of light sources; determining at least one quality measure of said remote detection of the light output signal; and adjusting the modulation signal on basis of said at least one quality measure. | 12-30-2010 |
20100329691 | LIGHT-BASED COMMUNICATION FOR CONFIGURATION OF LIGHT-SENSING PERIPHERALS - The present invention relates to light-based communication, and more particularly it relates to methods for configuration of at least one remote light-sensing device, to a central light-emitting unit and to a light-sensing device. According to the invention, spatial configuration of remote light-sensing devices (e.g. peripherals such as loudspeakers or light devices), will be achieved by transmission of embedded identifiers or configuration information in light emitted in a plurality of directions from a central light-emitting unit. With a different identifier or different configuration information for each direction of transmission, the directions can be distinguished from each other. The invention enables a user to place remote light-sensing devices in a desired spatial position and the central light-emitting unit will be able to determine location and spatial function, i.e. for example whether the peripheral is an audio device and/or a lighting device. As a result, the peripherals will be correctly configured without any user interaction required. | 12-30-2010 |
20110043116 | ILLUMINATION SYSTEM AND METHOD FOR PROCESSING LIGHT - Proposed is an illumination system ( | 02-24-2011 |
20110044701 | LIGHT MODULE, ILLUMINATION SYSTEM AND METHOD INCORPORATING DATA IN LIGHT EMITTED - Proposed is a light module ( | 02-24-2011 |
20110092824 | MONITORING A VITAL PARAMETER OF A PATIENT WITH "IN-SITU" MODULATION SCHEME TO AVOID INTERFERENCE - The invention relates to a method of monitoring a vital parameter of a patient by measuringattenuation of light emitted onto tissue of the patient, comprising the following steps: modulating the light with a modulation frequency or/and a modulation code; emitting the modulated light onto the tissue of the patient; collecting lightwhich is transmitted through the tissue or/and which is reflected from the tissue; demodulating the collected light; analyzing the demodulated collected light with regard to interference with ambient light; determining amodulation frequency or/and a modulation code for which interference with the ambient light is minimized or falls under a predefined threshold; and setting the modulation frequency or/and the modulation code for modulating the light according to the determined modulation frequency or/and a modulation code for which interference with the ambient light is minimized or falls under a predefined threshold. In this way a versatile and reliable possibility of monitoring a vital parameter of a patient with a high signal-to-interference ratio is provided. | 04-21-2011 |
20110101871 | CONFIGURATION OF A LUMINAIRE SYSTEM - There is provided a method for advanced configuration and initialization of a luminaire system. The luminaire system comprises one or more lighting devices ( | 05-05-2011 |
20110266415 | SENSOR DEVICE WITH TILTING OR ORIENTATION-CORRECTING PHOTO SENSOR FOR ATMOSPHERE CREATION - The present invention relates to a method and a device for controlling a physical property of light emitted from a light source. In particular, the invention can be applied to a lighting system for atmosphere creation. The measurements needed for feedback control are made at a portable user device comprising a planar photodetector. More or less all industrially available photodetectors are of the planar type, but planarity is in fact a necessary feature to achieve faithful relative measurements. Since the user device is portable, variations in the orientation of the photodetector can introduce large and unpredictable measurement errors, making effective control of the light source impossible. According to one embodiment of the invention, the orientation-dependent errors are eliminated by measuring the actual orientation of the photodetector and processing the detection signal appropriately. According to a second embodiment, the photodetector is movably mounted in the user device in order to retain its preferred orientation irrespective of the orientation of the user device. In a third embodiment, the emitted light is monitored by a plurality of photodetectors; knowing the actual orientation of the user device, the control device can give priority to the measurements coming from the best oriented photodetector at every instant. | 11-03-2011 |
20110310621 | AUTOMATICALLY COMMISSIONING OF DEVICES OF A NETWORKED CONTROL SYSTEM - The invention relates to automatically commissioning of devices of a networked control system, particularly to automatically commissioning (auto-commissioning) of light sources of a lighting system, where a control of light sources on an individual and local basis is required. A basic idea of the invention is to route commissioning messages through a grid, particularly an approximately rectangular grid of devices in that each device is able to receive commissioning messages from and to transmit commissioning messages to directly neighbored devices in the grid via light. An embodiment of the invention relates to a method for automatically commissioning of devices ( | 12-22-2011 |
20120002974 | ILLUMINATION DEVICE AND METHOD FOR EMBEDDING DATA SYMBOLS IN A LUMINANCE OUTPUT - The invention relates to embedding data symbols of a data signal into a luminance output of an illumination device. The device includes a controller configured for receiving a first base pattern and a second base pattern within a frame period, and generating a shifted second pattern by phase shifting the second base pattern within the frame period with respect to the first base pattern in response to the data signal such that the data symbols are embedded in the luminance output of the device. The device also includes a first light source configured to generate a first luminance output in response to the first base pattern and a second light source configured to generate a second luminance output in response to the shifted second pattern. The first and second luminance outputs have different output spectra and the luminance output of the illumination device comprises both the first and second luminance outputs. With this approach, the short-time average light output of the illumination device remains constant, decreasing the visible flicker and allowing the use of lower switching frequencies relative to the prior art approaches. | 01-05-2012 |
20120025740 | LIGHTING DEVICE - It is presented a lighting device ( | 02-02-2012 |
20120091896 | EFFICIENT ADDRESS ASSIGNMENT IN CODED LIGHTING SYSTEMS - Coded light has been proposed to enable advanced control of light sources and transmit information using light sources. It is based on invisibly embedding of data and identifiers in their light output. Methods, devices and systems configured to efficient assignment of addresses in a coded lighting system, still allowing for unique identification, are proposed. More specifically, the assignment of addresses occurs in two phases, where in the initial phase wide area unique addresses are used, while in the second phase only local area unique addresses are used. Also, methods, devices and systems configured to efficiently distribute a set of addresses over a set of light sources in this second phase, to maximize the performance of the illumination contribution estimation, and positioning, are disclosed. | 04-19-2012 |
20120153838 | COGNITIVE IDENTIFIER ASSIGNMENT FOR LIGHT SOURCE CONTROL - Coded light has been proposed to enable advanced control of light sources and transmit information using light sources. Methods, devices and systems configured to operate a coded lighting control system, which is robust to interference from other sources of light are proposed. The method is based on sensing the light by a remote control device, and based on the sensing result adapting the identifiers used by the different light sources. By assigning a code identifier to the light source based on light received by the light receiver the code identifiers may be selected such that the influence of light interfering with the light source identifiers may be mitigated. | 06-21-2012 |
20120163826 | CODED LIGHT TRANSMISSION AND RECEPTION - Coded light has been proposed to enable advanced control of light sources and transmit information using light sources. An assignment for the identification frequencies of light sources enables more unique frequencies to be assigned, i.e. more light sources to be uniquely identified in the system. An available frequency band is divided into non-uniform frequency regions and frequencies are selected from a set of uniformly spaced frequencies in the non-uniform frequency regions. A receiver is based on a successive approach and is enabled to analyze higher harmonics of the received light signals. The light contributions are successively estimated group by group. | 06-28-2012 |
20120170939 | METHOD AND SYSTEM FOR ASYNCHRONOUS LAMP IDENTIFICATION - The invention relates to embedding data into a luminance output generated by an illumination system comprising a light source and a controller. The controller is configured to embed data by modulating a drive signal applied to the light source with an information signal comprising a shifted base code and a synchronization code. The synchronization code serves to provide synchronization for the receiver, while the shifted base code serves to carry the embedded data. A cyclic phase shift that is applied to a base code to generate the shifted base code corresponds to particular data, such as, for example, light source identification, that needs to be embedded into the luminance output of the illumination system. In this manner, data may be embedded into the luminance output generated by a light source without requiring synchronization of this light source with other light sources. | 07-05-2012 |
20120200226 | Commissioning Coded Light Sources - Commissioning a coded light source in a lighting system is accomplished by using a remote controller. When an identification of a light source is successful, a control message is sent to that light source to at least partly switch off its light emission. Thus the light contribution of the identified light source is suppressed. Thereby the chance of coded light from an already identified light source colliding with identifiers comprised in coded light emitted by other light sources is reduced. When no more coded light is detectable, a sensitivity of the remote controller can be increased until coded light again is detectable. Further light sources can then be identified and commissioned. | 08-09-2012 |
20120281879 | Method and System for 2D Detection of Localized Light Contributions - The invention relates to a detection system for determining whether a light contribution of a light source is present at a selected position within a 2D scene. The light contribution includes an embedded code comprising a repeating sequence of N symbols. The detection system includes a camera and a processing unit. The camera is configured to acquire a series of images of the scene via specific open/closure patterns of the shutter. Each image includes a plurality of pixels, each pixel representing an intensity of the light output of the light source at a different physical position within the scene. The processing unit is configured to process the acquired series of images to determine whether the light contribution of the first light source is present at the selected physical position within the scene by e.g. correlating a sequence of pixels of the acquired series corresponding to the selected physical position with the first sequence of N symbols. | 11-08-2012 |
20120281987 | Data Detection For Visible Light Communications Using Conventional Camera Sensor - The invention relates to a detection system for determining data embedded into the light output of a light source in a form of a repeating sequence of N symbols. The detection system includes a camera and a processing unit. The camera is configured to acquire a series of images of the scene via specific open/closure patterns of the shutter. The processing unit is configured to process the acquired series of images to determine the repeating sequence of N symbols. By carefully triggering when a shutter of the camera is open to capture the different symbols of the encoded light within each frame time of a camera, a conventional camera with a relatively long frame time may be employed. Therefore, the techniques presented herein are suitable for detecting the invisible “high frequency” coded light while using less expensive cameras as those used in the prior art. | 11-08-2012 |
20120299510 | ADAPTABLE LIGHTING SYSTEM - The present invention relates to a control unit ( | 11-29-2012 |
20130069540 | Adaptive modulation and data embedding in light for advanced lighting control - Disclosed is a method for controlling a light output signal emitted by a set of light sources comprising at least one light source, wherein said light output signal includes a modulation signal which carries individual information, such that the method includes recurrently:
| 03-21-2013 |
20130145610 | COMMISSIONING OF A BUILDING SERVICE SYSTEM - The invention relates to adjusting at least one of installed building service sensors ( | 06-13-2013 |
20130182566 | DEVICE AND METHOD FOR LOAD BALANCING FOR DATA PACKET TRANSMISSIONS IN WIRELESS NETWORKS - For load balancing in a large-scale wireless mesh network, a device, a system and a method are provided for controlling data packet transmissions in the wireless mesh network, wherein answers to more than one received data packet are aggregated in one answer-batch. | 07-18-2013 |
20130188492 | DEVICE AND METHOD FOR SCHEDULING DATA PACKET TRANSMISSIONS IN WIRELESS NETWORKS - For load balancing in a large-scale wireless mesh network, a device, a system and a method are provided for controlling data packet transmissions in the wireless mesh network, wherein a time slot is randomly selected within a determined answer interval for transmitting an answer responding to a received data packet. | 07-25-2013 |
20130242929 | SYSTEM AND METHOD FOR OPTIMIZING DATA TRANSMISSION TO NODES OF A WIRELESS MESH NETWORK - For improving data packet transmission from a collector node to one or more network nodes without additional routing protocols or increase of the overall network load, a system and a method are provided, wherein a node and/or the collector node receiving an uplink data packet addressed to the collector node is adapted to store at least a sender node information and a transmitting node information as a reverse-route information for a predetermined time. | 09-19-2013 |
20130250590 | DIRECTION CONTROLLABLE LIGHTING UNIT WITH ULTRASOUND - A direction controllable lighting unit | 09-26-2013 |
20130272125 | COMPONENT, SYSTEM AND METHOD FOR CONTROLLING COMMUNICATION OF DATA OF AT LEAST ONE APPLICATION OF A COMMUNICATIONS NETWORK - For improving application data traffic in a communications network, data traffic of at least one application of the communications network is divided into two types in view of the current situation of the network—a first type comprising data, which can be transmitted by delaying the transmission, and a second type comprising data, which should not be delayed but should be transmitted at the current time. When an analysis of the current (average) load of the network shows that transmitting both types of data could lead to a heavy data traffic, a temporal transmission suppression session can be performed with regard to at least one entity of the communications network. In the temporal transmission suppression session, transmitting of data of the first type is interrupted during transmitting data of the second type. After completion of transmitting data of the second type, transmitting data of the first type is resumed. | 10-17-2013 |
20140056588 | Light module, illumination system and method incorporating data in light emitted - Proposed is a light module ( | 02-27-2014 |
20140072310 | Lighting device and receiver - There is provided a method and corresponding lighting device ( | 03-13-2014 |
20140096253 | AVOIDANCE OF HOSTILE ATTACKS IN A NETWORK - For improving the protection of a network against denial of service attacks and other hostile attacks, while keeping the operation of the network simple and efficient and considering restricted capacities of single network nodes, a control unit, a system and a method for operating a network with a plurality of nodes are provided, wherein at least one operation parameter of at least one node is adjusted based on a current network phase and a data packet received by the node ( | 04-03-2014 |
20140115666 | SECURE PROTOCOL EXECUTION IN A NETWORK - For secure configuration of network nodes from a backend with low connectivity requirements and workload at the backend and reduced communication overhead, a system, a control unit for a segment controller and a method for secure protocol execution in a network are provided, wherein protocol information is provided to a segment controller ( | 04-24-2014 |
20140192723 | Device and method for controlling a node of a wireless network - In order to increase transmission reliability and transmission efficiency in the presence of interference at a transmitting or receiving node of a wireless network a device for controlling the node of the wireless network is provided, wherein the node is associated to at least one load unit. The device comprises a control unit that is adapted to adjust a communication mode of the node based on an operation state of the load unit. | 07-10-2014 |