Abstract: According to a known projection lithography method an object is imaged on an imaging surface by means of a telescopic system of rotationally symmetrical electron lenses. The throughput during the production of integrated circuits by means of projection lithography is determined by the amount of current in the imaging electron beam; this current is limited by the resolution-limiting interaction of the electrons (Coulomb interaction). The invention allows for a larger beam current in that areas with a high current concentration are avoided. To this end, the imaging system includes five mutually perpendicular quadrupoles, so that the electrons are concentrated in line-shaped focal spots instead of a (small) circular cross-over. The system is telescopic and the imaging is stigmatic with equal magnifications in the x-z plane and the y-z plane.

Abstract: An encrypting exponentiation modulo M is effected by a modular multiplication X*YmodM, where M is a temporally steady but instance-wise non-uniform modulus. The method involves an iterative series of steps. Each step executes one or two first multiplications to produce a first result, and a trim-down reduction of the size of the first result by one or more second multiplications to produce a second result. The method furthermore takes a distinctive measure for keeping the final result of each step below a predetermined multiplicity of the modulus. In particular, the method postpones substantially any subtraction of the modulus as pertaining to the measure to a terminal phase of the modular exponentiation. This is possible through choosing in an appropriate manner one or more parameters figuring in the method. This further maintains overall temporal performance.

Abstract: A polarization-sensitive beam splitter comprising at least one transparent wedge-shaped element of a birefringent material is made by providing each one of two substrate plates with an orientation layer, whereafter the substrate plates are arranged with their orientation layers facing each other while forming a wedge-shaped interspace. The interspace is filled with a liquid crystalline monomer composition, which is subsequently cured while forming a wedge-shaped element of a uniaxially oriented polymer material. After possible removal of the substrate plates, two or three of such wedge-shaped elements can be joined to a Wollaston prism for use in the pick-up element of a magneto-optical recording system.

Abstract: An amplifier comprising an input stage (IPST) having a pair of inputs (INN,INI) for receiving a differential input signal (Vin) and a pair of outputs (CQ6,CQ7) for delivering a differential intermediate signal in response to the differential input signal (Vin); an intermediate stage (INTST) for converting the differential intermediate signal to a non-differential intermediate signal, which intermediate stage (INTST) comprises a current mirror (Q5,R5,Q4,R4) having an input branch (Q5,R5) and an output branch (Q4,R4) for receiving the differential intermediate signal; an output stage (OPST) having an input coupled to the output branch (Q4,R4) and having an output for delivering an output signal (Vout) to an output (OP) of the amplifier; and means for stabilizing the amplifier. The means for stabilizing the amplifier comprises a capacitor (CM2) coupled between the output (OP) of the amplifier and the input branch (Q5,R5).

Abstract: A display device is disclosed that includes a cache memory consisting of memory segments, each memory segment being capable of storing an image fragment. A video generator is driven by a video cache reader, which builds up a screen image from complete or partial image fragments stored in the memory segments. By means of hardware counters and registers the address of an image point in the cache memory is derived from the address of the image point read in last. As a result of this, the screen image can be built up very rapidly, so that no special screen memory is required and the amount of data to be transferred is reduced.

Abstract: The invention relates to an electronic ballast for discharge lamp, comprising a container with a wall, electronic components and at least one electroconductive element, which forms a connection between the individual electronic components and/or which can form a connection between the electronic components and the discharge lamp. According to the invention, at least a part of the conductive element extends parallel to the wall and is enclosed in the material of the wall.

Abstract: In a method for encoding a non-interlaced signal (60P) into an interlaced signal (60I) and an auxiliary signal, the interlaced signal (60I) is generated in dependence on the non-interlaced signal (60P), and the auxiliary signal is generated by furnishing regeneration coefficients enabling a reconstruction of non-encoded lines (o: D) of the non-interlaced signal (60P) in dependence on the interlaced signal (60I: A, B, C) and the regeneration coefficients. The invention is preferably applied in a method of processing non-interlaced signals by equipment, such as studio equipment, developed for processing interlaced signals.

Abstract: In a ballast circuit for operating a discharge lamp, two different lamp power levels are adjustable. The ballast circuit is equipped with a switch to optimize the amount of power feedback for the lamp power level. This enables total harmonic distortion and power balance to be optimized for more than one power level.

Abstract: A storage arrangement has a channel for accommodating chip-like electronic components in a predefined order and alignment. Simplified operation is achieved in that the channel between a first and a second end of the storage arrangement is led at least largely along a helical line. A device having such a storage arrangement optionally includes a first sub-assembly for preferably filling the storage arrangement with components and a second sub-assembly for preferably unloading the components, or a combination of the two.

Abstract: Instructions for a processing unit are stored in a number of memory banks, successive instructions being stored in successive, different memory banks. Whenever execution of an instruction is started, the reading of one instruction which will be executed more than one instruction cycle later is also started. Consequently, a plurality of instructions are read in parallel from different memory banks. After the reading of an instruction, and before starting the execution of the instruction, the instruction passes through a pipeline in which the processing device detects whether the relevant instruction is a branch instruction. If this is so, the processing unit starts the reading in parallel of a number of instructions as from a branch target instruction. If it appears at a later stage that the branch is taken, said number of instructions is loaded into the pipeline in parallel.

Abstract: A speech transmission system with an input speech signal applied to a speech encoder for encoding the speech signal which is transmitted via a communication channel to a speech decoder. Background noise dependent processing elements in the speech encoder and/ or speech decoder are introduced to improve the performance of the transmission system. The parameters of the perceptual weighting filter in the speech encoder are derived by calculating linear prediction coefficients from a speech signal which is processed by means of a high pass filter. An adaptive post filter in a speech decoder is bypassed when the noise level exceeds a threshold value.

Abstract: A device cures an adhesive by means of UV radiation in an inert-gas atmosphere. The adhesive is interposed as an adhesive layer between two superposed layers of a disc-shaped information carrier. The device includes a UV source, a supplier for an inert gas, and a holder for holding the information carrier in a centered position with respect to a centering axis. The inert-gas supplier has discharge openings for inert gas, situated in a circular zone around the centering axis, at a distance from the centering axis which substantially corresponds to the radius of the peripheral edge of the information carrier, so as to cause inert gas to flow past the peripheral edge during curing, as a result of which locally present oxygen which would interfere with curing is expelled.

Abstract: A recording and/or reproducing device. A cassette, which contains a magnetic tape and a coupling element connected to the magnetic tape, can be loaded into the device. The device includes a pull-out element which can be coupled to the coupling element so as to form a pull-out assembly. The pull-out assembly can be moved to the reel hub of a take-up reel. A radial positioning structure is provided between the reel hub and the pull-out assembly. The radial positioning structure is formed by two projecting portions, of which a first projecting portion projects from the reel hub and the second projecting portion projects from the pull-out assembly.

Abstract: In a transmission system comprising a transmitter coupled via a transmission channel to a receiver. The transmitter comprises a channel encoder for deriving encoded symbols from source symbols. The receiver comprises a channel decoder for reconstructing the source symbols from the signal received from the transmission channel. According to the present invention, the transmitter comprises a separate encoder for coding and transmitting a coding property used in the channel encoder to the receiver. The receiver is arranged for receiving the encoded coding property from the transmission medium, and the separate channel decoder is arranged for decoding the encoded coding property. The coding property provided by the separate channel decoder is passed to a code property setting component in the channel decoder for setting the coding property of the channel decoder.

Abstract: A rectifier device with at least one cooling body), with at least one diode arranged on the cooling body, with at least one protective layer is arranged on the diode and the cooling body, and with at least one receptacle at the cooling body for connection to the protective layer.

Abstract: An input circuit for, for example, an A/D converter mainly determines the performance of the circuit preceded by the input circuit (A/D converter). To improve the performance of the input circuit and to overcome the problem of high-power dissipation at the same time, the invention proposes the use of a combined sampling means and sub-ranging means as an input circuit.

Abstract: A story segment retrieval device for a multimedia computer system storing a multimedia signal including a video signal, an associated audio signal and text information as a plurality of individually retrievable story segments, each having associated therewith a finite automaton (FA) model and keywords, at least one of which is associated with each respective node of the FA model.

Abstract: A control unit (1) according to the invention for controlling a brushless motor (5) includes position detection means (10) for generating a signal (S1) which is indicative of the position of the motor (5). The control unit (1) further includes supply means (20a, 20b, 20c) for energizing two or more coils (5a, 5b, 5c) of the motor (5) and output terminals (30a, 30b, 30c) for electrically coupling the coils (5a, 5b, 5c) to the supply means (20a, 20b, 20c). The position detection means (10) include polarity detection means (T3, D3, T4, D4, A1) for generating a polarity signal (S1) which is a measure of the direction of the current (Ia) through at least one of the coils (5a). The control unit (1) in accordance with the invention is particularly suitable for use in a device for reading and/or writing an information carrier (6).

Abstract: In order to increase the ruggedness and the scattered radiation attenuation quality, a grid (3) with comb elements (12) which absorb electromagnetic radiation and are intended to form a grid is constructed, in such a manner that comb lamellae (11) extend transversely of an associated comb base surface which supports the comb lamellae (11).