Abstract: A stimulation apparatus includes a stimulation lead (102), a multiplexer (114), a stimulation signal generator (116), and a signal detector (120). The stimulation lead (102) includes a plurality of stimulation electrodes (112) disposed in an array about a distal portion of the lead body (110). The arrangement of the electrodes (112) facilitates the controlled steering of stimulating electrical field (118) in three dimensions. Four dimensional field steering may also be provided.

Abstract: A power efficient biomedical electro-stimulator circuit BSC is provided. The circuit BSC includes a charging circuit arranged to control charging of a storage capacitor C based on electric energy from an energy source ES, e.g. a battery. The charging circuit includes an energy converter EC that applies a charging current I to the storage capacitor C, this charging current I being substantially constant over a charging period T, thereby providing a power efficient charging. In preferred embodiments, the energy converter EC is an inductive energy converter, e.g. a DC-DC converter, with a control circuit serving to provide an almost constant charging current during the charging period. In another embodiment, the energy converter EC is an energy converter that charges the storage capacitor via a series resonator, e.g. a series connection of an inductor and a capacitor. The proposed biomedical electro-stimulator circuit is advantageous for devices such as pacemakers, and neural stimulation etc.

Abstract: The invention relates to a neurostimulation system, particularly for deep brain stimulation (DBS), comprising a spatial array (130) of stimulation electrodes (132) and an associated controller (110). The controller (110) is adapted to sequentially supply electrical pulses to different subsets of the stimulation electrodes (132). Preferably, the controller (110) comprises a single pulse-generator (112) and a multiplexing unit (111) for distributing the pulses to different stimulation electrodes. The stimulation electrodes (132) may preferably be arranged on probes (131).

Abstract: An antenna system for an implantable device like a cardiac pacemaker or a cochlear implant. The antenna system includes at least two coil units coupled with their terminals to a control circuit which can selectively connect the coil units in series or in anti-series, corresponding to a “operational mode” and a “safety mode”, respectively. In the operational mode, magnetically induced voltages in the coil units add, while they subtract and therefore completely or partially compensate in the safety mode. Thus the implantable device can be protected from damage due to extraordinarily large changing rates of external magnetic fields as they exist for example during MRI examinations.

Abstract: A (display) device (31,4,5) contains multiple panels (3,7) like e.g. displays. Every display can be used to display its own content and can be rolled out of a sub-housing (5) like e.g. a cartridge separately. In different configurations the same cartridge can be arranged in such a way that the panels are used for a separate functionality or multiple display panels form one big screen.

Abstract: A power efficient biomedical electro-stimulator circuit BSC is provided. The circuit BSC includes a charging circuit arranged to control charging of a storage capacitor C based on electric energy from an energy source ES, e.g. a battery. The charging circuit includes an energy converter EC that applies a charging current I to the storage capacitor C, this charging current I being substantially constant over a charging period T, thereby providing a power efficient charging. In preferred embodiments, the energy converter EC is an inductive energy converter, e.g. a DC-DC converter, with a control circuit serving to provide an almost constant charging current during the charging period. In another embodiment, the energy converter EC is an energy converter that charges the storage capacitor via a series resonator, e.g. a series connection of an inductor and a capacitor. The proposed biomedical electro-stimulator circuit is advantageous for devices such as pacemakers, and neural stimulation etc.

Abstract: The invention relates to a neurostimulation system, particularly for deep brain stimulation (DBS), comprising a spatial array (130) of stimulation electrodes (132) and an associated controller (110). The controller (110) is adapted to sequentially supply electrical pulses to different subsets of the stimulation electrodes (132). Preferably, the controller (110) comprises a single pulse-generator (112) and a multiplexing unit (111) for distributing the pulses to different stimulation electrodes. The stimulation electrodes (132) may preferably be arranged on probes (131).

Abstract: The invention relates to an antenna system (AS) for an implantable device like a cardiac pacemaker or a cochlear implant. The antenna system comprises at least two DD coil units (L1, L2) coupled with their terminals (T1 1, T21, T 12, T22) to a control circuit (CC) which can selectively connect the coil units in series or in anti-series, corresponding to an “operational mode” and a “safety mode”, respectively. In the operational mode, magnetically induced voltages (U1, U2) in the coil units add, while they subtract and therefore completely or partially compensate in the safety mode. Thus the implantable device can be protected from damage due to extraordinarily large changing rates of external magnetic fields as they exist for example during MRI examinations.

Abstract: The invention relates to an electrode system (200) that is particularly suited for deep brain stimulation. According to a preferred embodiment, the electrode system (200) comprises an elongated probe body (202) carrying a plurality of annular stimulation electrodes (201) of radius r and axial extension h that are axially distributed at distances d. The axial extension h is preferably smaller than the diameter 2r and preferably larger than the distance d. Moreover, the electrode system (200) optionally comprises a plurality of microelectrodes (203) projecting radially away from the probe body (202), said microelectrodes (203) being suited for recording neurophysio logic potentials.

Abstract: A stimulation apparatus includes a stimulation lead (102), a multiplexer (114), a stimulation signal generator (116), and a signal detector (120). The stimulation lead (102) includes a plurality of stimulation electrodes (112) disposed in an array about a distal portion of the lead body (110). The arrangement of the electrodes (112) facilitates the controlled steering of stimulating electrical field (118) in three dimensions. Four dimensional field steering may also be provided.

Abstract: A thin film transistor circuit has a main thin film transistor (10), a control input (12) for controlling the operation of the main thin film transistor and a threshold adjustment capacitor (14) connected between the control input and the gate of the main thin film transistor. A charging circuit (16, 18) is used for charging the threshold adjustment capacitor to a desired threshold adjustment voltage. The circuit is used to affect a voltage shift to the voltage applied to the control input. This effectively implements a threshold voltage change by altering the relative voltages on the main transistor gate and the control input.

Abstract: The invention relates to a magnetic sensor device comprising excitation wires (11, 13) for generating a magnetic excitation field and a magnetic sensor element, particularly a GMR sensor (12), for sensing magnetic fields generated by labeling particles in reaction to the excitation field. The magnetic excitation fields are generated with non-sinusoidal forms, particularly as square-waves, such that their spectral range comprises a plurality of frequency components. Magnetic particles with different magnetic response characteristics can then be differentiated according to their reactions to the different frequency components of the excitation fields. The magnetic excitation field and the sensing current driving the GMR sensor (12) are preferably generated with the help of ring modulators (22, 24). Moreover, ring modulators (27, 29) may be used for the demodulation of the sensor signal.

Abstract: A system comprises a display (1) with a substrate (16) and a carrier (2). The display (1) comprises pixels (11) and display conductors (12) which supply display signals (DS) to the pixels (11). The carrier (2) comprises carrier conductors (20) for carrying input signals (IS). The display conductors (12) and the carrier conductors (20) are positioned with respect to each other to obtain capacitors (C) between corresponding ones of the display conductors (12) and the carrier conductors (20) to capacitively transfer the input signals (IS) on the carrier conductors (20) to the display conductors (12).

Abstract: The element (50) comprises a first electrode (51), a self-assembled system (52), which is or comprises a monolayer an a second electrode (54). A polymeric contact layer (53) that has been deposited wet-chemically is present between the self-assembled system (52) and the second electrode (54). Suitably, both the self-assembled system (52) and the contact layer (53) are provided in a cavity (40).

Abstract: An over voltage protection device on a radio frequency identification tag or in a radio frequency receiver comprises electro-magnetic coupling means between a base station and the radio frequency identification tag or radio frequency receiver. At least one ferroelectric capacitor is electrically connected to the coupling means. As long as the voltage across the ferroelectric capacitor remains below its coercive voltage, its capacitance will be linear and the tag or radio frequency receiver will behave normally. However, if the voltage across the ferroelectric capacitor exceeds the coercive voltage, the ferroelectric capacitance will experience polarization reversal and exhibit its non-linear and dissipative behavior. Connecting the ferroelectric capacitor in suitable ways to the coupling means, will result in a dumping of the voltage transferred to the electronics present on the tag or radio frequency receiver. This electronics is then protected against excessive voltages that could cause it damage.

Abstract: A thin film transistor circuit has a main thin film transistor (10), a control input (12) for controlling the operation of the main thin film transistor and a threshold adjustment capacitor (14) connected between the control input and the gate of the main thin film transistor. A charging circuit (16,18) is used for charging the threshold adjustment capacitor to a desired threshold adjustment voltage. The circuit is used to effect a voltage shift to the voltage applied to the control input. This effectively implements a threshold voltage change by altering the relative voltages on the main transistor gate and the control input.

Abstract: An identification transponder (IDT) for supplying an identification code to a base station (BS) varies an RF signal transmitted by the base station (BS) in a rhythm that corresponds to the identification code. The identification transponder (IDT) has identification code generation means (IDCG) for generating the identification code, rectifier means (RTF) for AC coupling with the base station (BS) for applying a supply voltage (V1) to the identification code generation means (IDCG), a modulation transistor (TM), voltage adaptation means (VADPT) for adapting the voltage levels of the identification code and for supplying the code with adapted voltage levels to a control terminal of the modulation transistor (TM), and further rectifier means (FRTF) for the aforementioned AC coupling to the base station (BS) for applying a separate supply voltage (V2) to the voltage adaptation means (VADPT).

Abstract: A (display) device (31,4,5) contains multiple panels (3,7) like e.g. displays. Every display can be used to display its own content and can be rolled out of a sub-housing (5) like e.g. a cartridge separately. In different configurations the same cartridge can be arranged in such a way that the panels are used for a separate functionality or multiple display panels form one big screen.

Abstract: A matrix array display device (100) is mounted on a flexible substrate (110) such as a polyimide substrate, and has a plurality of first conductors (120) crossing a plurality of second conductors (130), with a plurality of pixels (140) being located in the vicinity of a crossing between a first conductor (120) and a second conductor (130). The display device (100) includes a flexible shift register (150) and an optional further flexible shift register (160) for addressing the first conductors (120). The flexible shift register (150), which preferably is realized using organic semiconductor materials, occupies a smaller area of the flexible substrate (110) than for instance a bus structure, thus increasing the effective display area of the display device (100).

Abstract: A system comprises a display (1) with a substrate (16) and a carrier (2). The display (1) comprises pixels (11) and display conductors (12) which supply display signals (DS) to the pixels (11). The carrier (2) comprises carrier conductors (20) for carrying input signals (IS). The display conductors (12) and the carrier conductors (20) are positioned with respect to each other to obtain capacitors (C) between corresponding ones of the display conductors (12) and the carrier conductors (20) to capacitively transfer the input signals (IS) on the carrier conductors (20) to the display conductors (12).