Abstract: A ridge wavegide laser diode, with an inverse mesa structure, resistant to heat and improved in the adhesion of a contact metal to a contact layer, which can be obtained by forming a polyimide spacer in such a way that polyimide remains only at the lower part of the corner of the inverse mesa structure. In the diode, the contact metal is minimally broken off at the opposite sides of the mesa structure.

Abstract: A microwave source has an amplifying transistor capable of operating at microwave frequencies and a frequency selection circuit. The circuit has a whispering mode dielectric resonator and a feedback loop having a first microstrip line connected by an impedance adaptation circuit to a gate of said transistor and a second microstrip line connected by an impedance adaptation circuit to a drain of said transistor. The dielectric resonator is located between the first line and the second line for magnetic field coupling therewith.

Abstract: A semiconductor device having a refresh device of a noise reduction type lowers a peak current value by sequentially performing refresh operations about a plurality of dynamic RAMs (DRAMs) in a system having a daisy chain structure, thereby reducing noises generated from the system.

Abstract: The apparatus has n non aligned antennas, where n is at least for receiving radio signals from a plurality of OPS satellites. Radio frequency signals received by the various antennas are processed for measuring their phase differences, and for computing attitude on the basis of said phase differences. The measurement and computing system is repeatedly calibrated on the basis of measurements performed by a star sensor during periods when it provides usable data.

Abstract: An automatic mode selection circuit for automatically selecting low voltage transistor transistor logic and high-speed input/output interface modes in a semiconductor memory device.

Abstract: The present invention refers to an easy to use and more cost effective medication injector. The injector comprises a fluid container (1) made, preferably, of one bent, or two straight, edge heat-sealed neutral, flexible, pressure resistant and autoclavable plastic films, containing, at the discharge side, a rigid plastic tube (2) with reinforcement wings (3), in whose distal end is attached a needle (4), tightly enclosed in a plastic tube (5), closed at its distal end (6), the set being enclosed in an air-tight envelope (7) with rims (8). For large volumes infusion, the container (1) is attached to an infusion tubing (9) with a simple drip chamber (40) and an optional clamp (11) and a three-way stopcock (41) adapted to connect a syringe (42) for an initial bolus in a biphasic administration. For large volumes pressure injections, the container (1) is placed between pressing plates (14and 17) respectively attached to a lower (13) and upper (15) elements, both connected by the main link (16).

Abstract: In an angle-of-rotation measuring device, which can be attached to a motor, is a rotor shaft which can be coupled in a force-locked manner to the motor shaft. The stator can be coupled to a fixed motor casing by means of a diaphragm which is fixed in a shape-locked manner to the motor-side end face of the stator by means of its inner region. The diaphragm encloses the stator in a sheath-like manner and has, at its outer rim remote from the motor, a bead which is clamped between the casing and a lid which seals the casing at the end face remote from the motor.

Abstract: The present invention relates to a packing machine for packing articles (4) in a film (5), with a tube shaping device (1) for shaping a tube from a film which is substantially flat prior to tube shaping and a transporting device (2) for transporting the articles into the tube, the tube shaping device having several pairs of shaping edges (12, 17, 18) for deflecting or reversing the film. The packing machine is characterized in that the shaping edges (12, 17, 18) are positioned relative to one another in such a way that the path over the shaping edges along lines parallel to the borders (11) of the film (5) from an entrance of the film into the tube shaping device (1) up to its exit therefrom, is shorter in the vicinity of the film borders than in a central region of the film.

Abstract: A dynamic random access memory including a cell array for storing data therein, a column address strobe bar buffer for generating at least one internal column address strobe signal in response to one external column address strobe bar signal to select data from the cell array, and an internal column address strobe enable signal generation circuit for generating at least one internal column address strobe enable signal to control the number of internal column address strobe signals from the column address strobe bar buffer. According to the present invention, one external column address strobe bar pin is used to generate internal multiple column address strobe signals. Therefore, the package size can be reduced and the time skew can be avoided. Furthermore, the internal multiple column address strobe signals are selectively enabled.

Abstract: A method for forming a shallow junction of a semiconductor device using a zirconium film to cover a semiconductor substrate and implanting impurities into the zirconium film. A titanium film is then formed over the zirconium film and both the zirconium and the titanium films are subjected to a thermal treatment to form a zirconium silicide and a titanium silicide. Unreacted parts of the zirconium film and titanium film are removed and the zirconium and titanium silicides are then subject to a second thermal treatment.

Abstract: A DRAM capacitor and a method for fabricating the same, capable of achieving an increase in surface area and thereby an increase in capacitance while reducing the topology, by simply forming a conduction layer, as a charge storage electrode, comprised of conduction spacers around a double-layer pin-shaped conduction layer pattern or a combination of a central conduction layer pattern and an outer conduction layer pattern having an upwardly-opened dome structure surrounding the central conduction layer pattern, using an etch rate difference between insulating films.

Abstract: A vinyl 4-tetrahydropyranyloxybenzal-vinyl 4-hydroxybenzal-vinyl tetrahydropyranyl ether-vinyl acetate copolymer, a vinyl 4-tetrahydropyranyloxybenzal-vinyl tetrahydropyranyl ether-vinyl acetate copolymer and a preparation method thereof are provided. The copolymers have excellent transparency because they are very low in optical absorbance in the deep uv range. In addition, the acetal structure in the backbone and in the substituted groups endows the photoresist of the copolymer with superior dry etch resistance.

Abstract: A device for controlling the accuracy of the orbit along which a work spindle of an NC machine is moved during the manufacture of high-precision circular bores, inner and outer surfaces as well as radii essentially consists of a control unit (1), a clamping element (3) as well as an intermediate piece (2). The clamping element is connected to the work spindle of the machine tool and the control unit is placed on the work table of the machine tool, at the location at which the workpiece is held during the machining. The intermediate piece (2) is formed by a transducer (24) or comprises a transducer. If deviations from the nominal radius occur, the transducer transmits a signal to an amplifier, said signal being amplified and subsequently displayed and/or recorded. A shaft encoder (61) allows the precise determination and, if so required, registration of the respective measuring position. A special routing of the measuring cable and an internal transmission by means of a slip ring (66) and sensors (67), e.g.

Abstract: A two-cycle internal combustion engine comprises a cylinder with a piston, the cylinder having a port in which an intake valve is placed for feeding a fuel-air mixture from an intake manifold into an intake chamber. The intake chamber is positioned under the position, is isolated from a crank chamber and communicates with a combustion chamber. The combustion chamber is positioned above the piston and communicates with the intake chamber by means of a by-pass manifold, at the inlet of which an intake valve is placed for feeding a fuel-air mixture. An additional piston is provided which is positioned in the cylinder between the crank chamber and the main piston and is rigidly connected to the main piston. A second intake chamber is positioned between the first intake chamber and the additional piston. The second intake chamber isolated from the first intake chamber by means of a partition and communicates with the intake manifold and with the by-pass manifold.

Abstract: An add-on armor system for releasable attachment to an external surface of a hull of a vehicle comprising a plurality of juxtaposed armor tiles. Each armor tile is releasably attached to the hull of the vehicle by means of a fastening assembly and has an attachment surface matching the hull portion to which it is attached. The fastening assembly is a snap-type assembly which has a first engagement member in form of a profiled shank and a second engagement member comprising a profiled socket serving as releasable catch for snappingly engaging the profiled shank. The fastening assembly further comprises a shock absorbing plate secured to the hull.

Abstract: A circuit for protecting against damage from an electrostatic discharge (ESD). The circuit provides protection by minimizing a voltage difference between a main voltage line and a TTL voltage line. This is accomplished with a bypass to a main ground voltage line in the case of a positive overvoltage, and a bypass to a main supply voltage line in the case of a negative overvoltage. In order to equalize the voltage between the main supply voltage line and the TTL supply voltage line, the circuit also utilizes a metal gate N-channel field transistor and a gate diode active transistor connected in parallel between the main and TTL supply voltage lines. A pair of metal gate N-channel field transistors is also connected in parallel between the main and TTL ground voltage lines in order to equalize the voltage between the main and TTL ground voltage lines.