Abstract: The present invention relates to a solid state lighting system comprising at least one light emitting semiconductor device (LEDstr), at least one driving means (LEDdr) for driving a predetermined current through the at least one light emitting semiconductor device (LEDstr). The lighting system furthermore comprises a first voltage supplying unit (PS1) coupled to provide a first supply voltage (Vbus1) to a first side of the at least one light emitting semiconductor device, and a second voltage supplying unit (PS2) coupled to provide a second supply voltage (Vbus2) for the at least one light emitting semiconductor device. The first and the second supply voltages (Vbus1, Vbus2) are selected to optimize the voltage drop across the at least one light emitting semiconductor device (LEDstr).

Abstract: A media stream is transmitted from a server device to a client device. The client device (10) transmits set-up request messages (43a), discovery messages (44b) and a play command message (45a). The server receives versions of the set-up request messages (43b), the discovery message (44b) and the play message (45b) with matching identifier in the payloads of the messages. The server device (12) receives the discovery messages (44b) on a predetermined port and stores information recording that the discovery messages (44b) have been received, at least when no corresponding set-up request message 43b has been received before. The server device (12) compares the identifiers from the received set up request message (43b) and the discovery message (44b) according to the information recording reception, at least when the discovery message (44b) has been received before the set-up request message (43b).

Abstract: Embodiments provide a microphone/speaker assembly such as a headphone or headset which comprises a mechanical acoustical low pass filter between the microphone and the speaker so as to effectively attenuate higher frequencies fed back to the microphone. The low pass filter may comprise a hole or tunnel which connects a front volume of the microphone with a front volume of the speaker, providing a reliable and effective stable structure. An attenuation material may be provided for adjusting the attenuation of the low pass filter. Other embodiments provide side-by-side microphone and speaker so that the microphone does not distort the speaker acoustic path.

Abstract: A data handling system wherein the system is configured for receiving at an input a first plurality of commands, the plurality of commands comprising a plurality of read commands, and for producing at an output a second plurality of data objects; the system comprises: a plurality of memory banks, a distributor (102), a plurality of access modules (104), and a rearranging network (108). Wherein the commands are buffered to avoid bank conflicts, and wherein the retrieved data objects are rearranged by the rearrangement network.

Abstract: The semiconductor device (100) comprises at least one semiconductor element (20), a metallization structure comprising a first (31) and a second line (32) and extending thereon a resistor. An electrically insulating protection layer (36) is present on the resistor (35) and is defined in a pattern that is substantially identical to the resistor pattern and has a temperature stability up to a temperature that is at least equal to a deposition temperature of a passivation layer (37) to be deposited thereon so as to cover the metallization structure. Both the resistor (35) and the protection layer (36) are deposited conformally on the metallization structure and any underlying substrate.

Abstract: A micro-electromechanical resonator comprising a material having anisotropic directional elasticity characteristics. A shape of the resonator is such that a first distance in a first direction from a centroid of the resonator to a first point on a peripheral edge of the resonator is greater than a second distance in a second direction from the centroid to a second different point on the edge. This is true for every first direction and every second direction wherein the material has a lesser modulus of elasticity in the first direction than the second direction.

Abstract: A sensor array (100) for detecting particles, the sensor array (100) comprising a substrate (102) having a plurality of holes (104), a plurality of electronic sensor chips (106) each having a sensor active region (202) being sensitive to the presence of particles to be detected, and an electric contacting structure (110) adapted for electrically contacting the plurality of electronic sensor chips (106), wherein the plurality of electronic sensor chips (106) and/or the electric contacting structure (110) are connected to the substrate (102) in such a manner that the plurality of holes (104) in combination with the plurality of electronic sensor chips (106) and/or the electric contacting structure (110) form a plurality of wells with integrated particle sensors.

Abstract: Power consumption by an image display device is reduced. The image display device is of a type that transmits light from a back light unit (4, 12) through an image display area of a light modulation panel (10). The intensity of the light supplied by the back light unit (4, 12) to the image display area is made position dependent according to a predetermined function that decreases from a centre of the display area towards a periphery of the image display area on mutually opposite sides of the centre. This may be done by varying the density the light sources (4) as a function of position from a centre of the image display area towards a periphery of the image display area. Position dependent compensation factors may be applied to pixel values defined by received image data, the position dependent compensation factors being selected to compensate at least partly for an effect of the density of light sources on light intensity as a function of position in the image display area.

Abstract: A near field communication device being operable in a first operating state and a second operating state, the near field communication device comprising a communication unit adapted for communicating with an external device; and a control unit coupled to the communication unit; wherein the control unit is adapted for controlling the communication unit to be presented to the external device to be in the first operating state and supporting the second operating state, and wherein the control unit is adapted for switching the communication unit from the first operating state to the second operating state upon receipt of a configuration signal received from the external device.

Abstract: A bi-directional switch for a power converter comprises first and second transistors (SW1, SW2) and a floating supply capacitor (C2) associated with the second transistor (SW2). The drive circuit and/or gate of the first transistor (SW1) is charged by the floating supply capacitor (C2) of the second transistor (SW2). The charging takes place at a predetermined moment in the switching cycle, and in particular at a moment in the switching cycle when the voltage across the bi-directional switch is substantially a minimum.

Abstract: A semiconductor device is formed by forming a second trench 120 at the base of a first trench 18, depositing insulator 124 at the base of the second trench 120, and then etching cavities 26 laterally from the sidewalls of the second trench, but not the base which is protected by insulator 124. The invention may in particular be used to form semiconductor devices with cavities under the active components, or by filling the cavities to form silicon on insulator or silicon on conductor devices.

Abstract: A system and method for controlling an IC in different operational modes involves automatically loading operational configurations of target circuitries in the IC for a determined operational mode into at least one register and operating the target circuitries in the IC according to the operational configurations that are automatically loaded into the at least one register.

Abstract: Conventional modulation envelope demodulators for amplitude modulated signals (e.g. ASK coded signals RX) contain rectifier elements which extract a baseband signal BB. Disadvantageously, due to a non-linear characteristic of the rectifier elements, an amplitude of the baseband signal BB depends on an amplitude of the high-frequent carrier signal. The present invention discloses an improved demodulation circuit for demodulating of ASK coded or amplitude modulated signals. This is achieved by using a sampling mixer 4 and a phase adjusting regulation loop (5) by means of which the sampling of the ASK coded signal RX at its maxima is performed with high accuracy. Due to the absence of any rectifying elements, the baseband signal BB can be fully extracted from the ASK coded signals RX.

Abstract: A system and method provides extended convolutional coding for packets/frames or superframes used in wireless transmission. A wireless system has an extended convolutional encoder/decoder, a wireless network, a server having an extended convolutional encoding/decoding module, one or more clients, at least one of which performs extended convolutional encoding/decoding; and a wireless transmission unit for the server and one or more clients to communicate via the wireless network. A method for providing the extended convolutional encoding includes the steps of retrieving a set of codes from a database that has a maximal-minimal free distance within a certain range; selecting a subset of the retrieved codes that have the smallest number of paths at the maximal-minimal free distance; and finding extended convolutional codes by selecting a code having a certain rate from the subset of codes that have the smallest number of paths at increased free distances to provide the best candidates.

Abstract: In a data carrier (1), there are provided modification means (19) for modifying, as a function of the distance between the data carrier (1) and the base station (4), the ratio of the duration of a load period (TB) to the duration of an off-load period (TE), at which ratio the data carrier (1) load-modulates the electromagnetic field (HF) generated by a base station (4).

Abstract: An electronic circuit for cryptographic processing, comprising a first combinatorial logical circuit, arranged to perform a first set of logical operations on input data and to produce output data, the output data having a functional relation to the input data, further comprising at least a second combinatorial logical circuit, arranged to perform a second set of logical operations on the same input data and to produce output data, the output data having an identical functional relation to the input data, wherein the first set of logical operations is different from the second set of logical operations, and wherein the electronic circuit is arranged to dynamically select one combinatorial logical circuit, of a set comprising at least the first combinatorial logical circuit and the second combinatorial logical circuit, for performing logical operations on the input data and producing output data.

Abstract: A commutating auto zero amplifier system, comprises a first amplifier (A1), a second amplifier (A2) and a switching arrangement which defines a two phase operation, with one amplifier in an output mode providing the output and the other amplifier in a zeroing mode during each phase. A capacitor arrangement (Cof1. Cot1) stores offset voltages, a buffer amplifier (B) couples the output from the amplifier in the output mode to an input of the amplifier in the zeroing mode. This eliminates voltage swings at the output of an amplifier as it switches between modes of operation.

Abstract: Recently, the use of class-D audio amplifiers has become more and more widespread. In contrast to the generally employed class-AB linear amplification technology, class-D allows for improved efficiency. However, the class-D principle is known for its poor distortion characteristics. According to the present invention a digital amplifier (18) is provided for converting an audio signal to a power output, comprising a ripple suppression circuit (16) for suppressing voltage ripples in a supply voltage supplied to the bridge circuit with (6) at least one pair of switches. The ripple suppression circuit (16) suppresses ripples in the supply voltage supplied to a switch in the bridge circuit (6), which has been found to cause a major part of the distortions in the output signal of the digital amplifier (18).

Abstract: The invention relates to a non-volatile memory device comprising: an input for providing external data (D1) to be stored on the non-volatile memory device; and a first non-volatile memory block (100) and a second non-volatile memory block (200), the first non-volatile memory block (100) and the second non-volatile memory block (200) being provided on a single die (10), wherein the first non-volatile memory block (100) and second non-volatile memory block (200) are of a different type such that the first non-volatile memory block (100) and the second non-volatile memory block (200) require incompatible external attack techniques in order to retrieve data there from, the external data (D1) being stored in a distributed way (D1?, D1?) into both the first non-volatile memory block (100) and the second non-volatile memory block (200). The invention further relates to method of protecting data in a non-volatile memory device.

Abstract: An electric circuit for a communication device (200) for communicating with a further communication device (500), the electric circuit comprising an inductive antenna element (101) adapted for inductively communicating with the further communication device (500), a capacitive antenna element (102) adapted for capacitively communicating with the further communication device (500), and a common matching circuit (105) adapted to match impedances of the inductive antenna element (101) and of the capacitive antenna element (102).