Abstract: The present invention provides a lighting system 10 for operating a high intensity discharge (HID) lamp 12, comprising: a converter 200 for converting an input voltage to a DC current; a commutator 202 coupled to the converter for converting the DC current to an alternating drive current; a voltage controlled feedback loop 204 for adjusting said DC current, which is connected between an output and an input of the converter; a processor 206 for controlling the feedback loop, wherein the processor is adapted to adjust a damping level of the feedback loop by controlling a gain level of the feedback loop depending on a measured lamp current. The feedback loop has one or more adjustable gain levels. The processor adjusts the one or more gain levels to limit overshoot or undershoot of the lamp current following drive current transitions. The processor can adjust the gain levels of the VCL using the rising and/or falling transitions of the lamp current.

Abstract: The present invention provides a locating apparatus (100) for locating a user in a wireless network, coverage area of the wireless network including at least one functional area, comprising: a transmission source (101) for transmitting a radio signal; a first receiver (111) for receiving the radio signal; a second receiver (112) for receiving the radio signal; a first detector (121) for detecting a first signal variation state of the radio signal received by the first receiver; a second detector (122) for detecting a second signal variation state of the radio signal received by the second receiver; and a determiner (124) for determining whether the user is in one of the at least one functional areas according to the first signal variation state and the second signal variation state.

Abstract: A method for transferring volumetric image data from a server to at least one client comprising: transforming said volumetric images into a hierarchical representation comprising a plurality of coefficients, said hierarchical representation comprising a plurality of levels of essentially non-redundant data, wherein a level of said hierarchical representation comprises transform data sufficient to reconstruct said images at a resolution corresponding to said level; partitioning said coefficients into a plurality of voxels, each voxel comprising “n” coefficients in a horizontal direction, “m” coefficients in a vertical direction, and “P” coefficients in a depth direction; requesting, from a client to a server, transform data in the form of voxels from one or more levels of said hierarchical representation necessary to reconstruct at least a portion of said source volume; transferring, from a client to a server, a request for coefficients of at least a portion of said volumetric image; transferring, from said se

Abstract: There is provided a personal fall detection system comprising a sensor module that is suitable for attachment to a user, the sensor module comprising an accelerometer for measuring accelerations acting on the sensor module; and a processor for analyzing the measured accelerations to determine if the sensor module has suffered an impact, and for estimating a vertical displacement of the sensor module during a time period immediately before the impact; wherein the processor estimates the vertical displacement of the sensor module by twice integrating the measurements from the accelerometer.

Abstract: Devices (1) for monitoring light (2) coming from different areas comprise first components (10) for selecting light coming from a particular area, second components (20) for filtering the selected light, third components (30) for sensing the filtered light, and fourth components (40) for in response to an output signal of the third component (30) determining spectra of the sensed light and for calculating color parameters such as color points and/or color rendering indices from the spectra. The first components (10) may comprise light angle selectors and redirectors (11), such as rotational mirrors (110) and rotational apparatuses (112), and light angle restrictors (12), such as high aspect ratio structures with absorbing walls (120) or circular holes (121). The second components (20) may comprise filter arrays (21). The third components (30) may comprise sensor arrays (31).

Abstract: The present invention relates to an apparatus for determining a modification of a size of an object. The apparatus comprises a registration unit (13) for registering with respect to each other a first region of interest in a first image data set showing an object at a first time and a second region of interest in a second image data set showing the object at a second time being different from the first time, wherein the registration unit is adapted to generate a scaling value by performing at least a scaling transformation for registering the first region of interest and the second region of interest with respect to each other. The apparatus further comprises a modification value determination unit (14) for determining a modification value, which indicates the modification of the size of the object, depending on the generated scaling value.

Abstract: A method for managing the weight of a user is disclosed. The method comprises a) obtaining the energy expended by the user preferably in a day b) modeling the user's weight management and predicting the target weight that can be reached and the target time period required for achieving the predicted target weight based on the obtained energy expended in combination with the current weight of the user c) using the model and devising a weight management plan that the user has to pursue for a pre-determined time period d) using the devised weight management plan and coaching the user on a daily basis for the pre-determined time period and e) monitoring the progress at the end of the pre-determined time period and checking whether the user's weight is differing with respect to the weight that is to be achieved based on where the user is currently in the target time period and if so repeating step a, step b, step c and step d.

Abstract: The invention relates to a circuit for operating a high pressure discharge lamp La. The circuit comprises input terminals for connecting to a source of supply voltage; first capacitive means C1 coupled to the input terminals and second capacitive means C2 coupled to the input terminals parallel to the first capacitive means C1. A switchable element D1 is provided between the first and second capacitive means C1, C2 for blocking a current with which the second capacitive means C2 in use charge the first capacitive means C1. Output terminals for connection of the high pressure discharge lamp La and the inductive means are provided and a commutator BR coupled to said input terminal and to said output terminals for supplying an alternating current to the high pressure discharge lamp La when the lamp is connected to said output terminals. The circuit comprises a pulse supply for supplying to the output terminals a current pulse in a later part of a half period of the alternating current.

Abstract: A multi-voltage compatible track system which has a single adapter for both 120 Volts and 277 Volts track systems. The systems further comprise a variable input voltage ballast capable of operating with both 120V and 277V input while operating properly.

Abstract: The present invention relates to method for communicating in a network comprising the step a) of a primary station transmitting to at least one secondary station on a downlink control channel an indication related to a resource allocated to said secondary station in accordance with a semi persistent schedule, wherein the step a) comprises the step of transmitting to the secondary station at least two messages including at least part of the indication in one subframe.

Abstract: A neonatal feeding tube (10) includes electronics and instrumentation for monitoring a neonate and for provides nourishment to the neonate. The tube (10) includes electrodes (20) for sensing ECG signals of the neonate. Thermistors (22, 24, 28, 30) are placed at various points along the tube (10) to measure the neonate's temperature at those points. Breathing effort is measured by calculating a pressure differential at two pressure ports (32, 34). Pulse and SpO2 are measured at a fiber optic window (35). The electrodes (20), a distal electrode (64) and a light source (66) aid in helping a caregiver position the tip (12) of the tube (10) correctly in the stomach of the neonate.

Abstract: The present invention relates to a method for communicating in a network comprising at least one primary station communicating with at least one secondary station, comprising (a) the secondary station sending to the primary station a buffer status report representative of the amount of data in a buffer of the secondary station, (b) in absence of acknowledgement from the primary station, the secondary station retransmitting the buffer status report and, (c) if a maximum number of retransmissions has been reached, the secondary station sending a further buffer status report to the primary station.

Abstract: A method of automatically meshing a volume of an object in an ultrasound imaging system comprises the steps of: —acquiring image data of the object; —selecting a first surface of interest comprising a first slice of the object in the image data; —determining a main axis (AX) of the object; —defining a set of planes (22) separated by a given distance, being not parallel with the main axis while being parallel one with the other; —drawing a contour of the second slice of the object in at least two planes of the set of planes comprising a second slice of the object; and —meshing the volume by stacking the contours along the main axis according to the given distance.

Abstract: The present invention relates to a system and corresponding method for a secure end-to-end patient healthcare system which includes wireless medical sensors adapted to be attached to a patient's body and in communication with each other forming a body sensor network within a wireless medical sensor network including one or more body sensor networks; ?-secure keying means incorporated into each wireless medical sensor for enabling secure communications between the wireless medical sensors, and a personal security manager within the body sensor network and in communication with the wireless medical sensors within the body sensor network, the personal security manager providing secure communications with backend services and providing security relationships within the body sensor network by means of the ?-secure keying means, wherein the ?-secure keying means are such that a coalition of no more than ? compromised wireless medical sensors conceals a pairwise key between any two non-compromised wireless medical s

Abstract: The invention relates to an illumination system (4) comprising at least one light source (10) for emitting light of a predominant wavelength (W), and a light-transmitting panel (14) which comprises a light-emitting window (16), a rear wall (18) situated opposite said light-emitting window, and edge walls (20) extending between the light-emitting window and the rear wall. Light from the LED is coupled into the light-transmitting panel and is transported substantially via total internal reflection. The rear wall is provided with a two-dimensional array of recesses (22, 24). A sub-set of recesses (22) is distributed substantially regularly on the rear wall. Each recess (22A, 22B, 22C) from the sub-set (22) comprises scattering material (26). When light from the light-transmitting panel reaches the scattering material of the recess, part of the light (W?) is coupled out of the light-transmitting panel via scattering.

Abstract: A parametric representation of a multi-channel audio signal describes the spatial properties of the audio signal well with compact side information when a coherence information, describing the coherence between a first and a second channel, is derived within a hierarchical encoding process only for channel pairs including a first channel having only information of a left side with respect to a listening position and including a second channel having only information from a right side with respect to a listening position. As within the hierarchical process the multiple audio channels of the audio signal are downmixed iteratively into monophonic channels, one can pick the relevant parameters from an encoding step involving only channel pairs carrying the information needed to describe the spatial properties of the multi-channel audio signal.

Abstract: A method and apparatus for rendering image data on a 3D display is disclosed. A first image signal is received and then at least one colour component of the first image signal is rendered in reduced spatial resolution to produce a second image signal. The second image signal is spatial filtered wherein spatial errors and view errors are balanced when reconstructing a full resolution signal for the display.

Abstract: A method for exchanging data between first and second functional units includes the following steps. In a first handshake procedure, data is exchanged corresponding to a communication thread selected by the first functional unit, while independently in a second handshake procedure, information relating to a status of at least one communication thread is exchanged from the second to the first functional unit. The information enables the first functional unit to anticipate the possibility of exchanging data for the at least one communication thread.

Abstract: In a computer-assisted visualization of a three-dimensional anatomical object, two or more diagnostic image data records (1, 3, 4, 5) of the object are recorded. Thereafter, an imaging specification is defined for imaging the image data (1, 3, 4, 5) onto a two-dimensional display plane (8). In order to define the imaging specification, anatomical features (2) of the object are identified in at least one of the image data records (1). Finally, a combined two-dimensional representation is calculated by imaging the two or more image data records (1, 3, 4, 5) according to the previously defined imaging specification onto a common display plane (8).

Abstract: A recording method, particularly suitable for use in a digital video-camera, is described according to which a digital signal (10), deriving from the encoding of an audio-video signal is temporarily stored in a buffer (11) and from there recorded in a dual layer DVD (12) in successive recording intervals (22) or packets. The start/stop of a recording interval is normally controlled according to the level (15) of filling of the buffer. The digital signal is partitioned in portions that need to be entirely recorded on one single layer, and this triggers the need for a layer jump independently from the level of filling of the buffer. In order to avoid starting a layer jump with the buffer already partly filled, and therefore having a short non-recording interval (23) when time is mostly needed for calibrations, it is proposed to adjust the resolution in the encoding of the audio-video signal so as to have the buffer close to empty when the layer jump occurs.