Abstract: A method of crystallizing a semiconductor thin film moves a laser beam emitted by a pulse laser in a first direction to irradiate the semiconductor tin film with the laser beam for scanning. The laser beam is split into a plurality of secondary laser beams of a width smaller than the pitch of step feed, respectively having different energy densities forming a stepped energy density distribution decreasing from the middle toward the opposite ends thereof with respect to the direction of step feed. The energy density of the first secondary laser beam corresponding to the middle of the energy distribution is higher than a threshold energy density, i.e., the minimum energy density that will melt the semiconductor thin film to make the same amorphous, and lower than a roughening energy density, i.e.

Abstract: In a diaphragm or membrane pump, the diaphragm thereof is composed of two diaphragm disks arranged at an axial distance from one another and enclosing an interior space whose size is variable given damage to one of the diaphragm disks. Further, a signal generator is arranged in that diaphragm disk facing toward the conveying chamber and a signal pick-up is arranged in the pump housing, this signal pick-up being connected to a means for the electronic evaluation and amplification of the signals output by the signal pick-up. This embodiment makes it possible to recognize a potential damage to the diaphragm early and to thus reliably prevent hydraulic medium from proceeding into the conveyed medium.

Abstract: An x-ray diagnostics installation has an image intensifier video chain with a detector for obtaining an actual value of the brightness of a dominant region within the image at the output screen of the x-ray image intensifier, this actual value being compared with a rated value for controlling the overall brightness of the image. For this purpose, the output image of x-ray image intensifier is directed onto a chip having electrically driveable micromirrors, which can be individually driven, so that by selected individual drive of the micromirrors the individual micromirrors can be oriented as needed to direct a selectable image portion onto a light detector, for use in controlling the brightness.

Abstract: A relay with a moveable contact element which is actuated through armature movement transmitted via a slide is switched by the application of torsional forces to the movable contact element. The torsional forces are generated by the slide pushing the leaf spring contact element eccentrically in the region of one edge so that twisting of the contact element occurs during the switching event. A lower spring modulus for a spring of predetermined thickness and dimensions result so that a smaller magnetic system and a smaller overall relay is achieved given matching of the spring force curve to the magnetic system force curve.

Abstract: Digitally programmable, single-channel and multi-channel hearing aids of various manufacturers and/or hearing aids having different acoustic characteristics can be set and adjusted with the programming device of the invention. The programming device includes a microcontroller, main memories, interchangeable company program modules with plug-in locations, and a master program module with corresponding plug location. A display is also provided for the programming device.

Abstract: The present invention relates to a pair of spectacles for stereoscopic pictures based upon the principle of the Pulfrich effect. The direction in which a moving object is moving in a picture or the moving direction of a video camera is marked on the spectacles for stereoscopic pictures to obtain a correct stereoscopic image, so that the viewer can easily and readily determine which of a darker lens or a lighter lens is applied to which eye. According to the invention, the connecting portions between the front frame and the temples of the spectacles are formed as a pair of hinges which protrude from the inside front frame and are spaced apart from each other so that a space therebetween receives the hinges of a pair of standard glasses worn by a viewer to support the stereoscopic spectacles on the standard glasses with great stability. This also enables the stereoscopic spectacles to be reduced in size so that they may be worn more stably by those who do not wear vision correcting glasses.

Abstract: Weight counterbalancing means for an articulating arm comprising first and second articulating arm members. One end of the first arm member is pivotally secured to a base and operative to pivot around a first horizontal axis. The second arm member is pivotally secured to the other end of the first arm member and is operative to pivot about a second horizontal axis. Each arm member is provided with a lever member that is part of a parallelogram system whose connecting nodes in part comprise the free end of the lever member of the first arm member, the pivot axis of the second arm member, and the free end of the lever member of the second arm member, a remaining connecting node in the parallelogram system being subject to a force that serves as a counterbalance for the articulating arm around the first horizontal axis, so that the articulating arm is held in equilibrium in every position.

Abstract: An apparatus is intended for holding a slider during threading through the slider a continuous slide fastener chain having a succession of fabric pieces along each of the opposite longitudinal marginal edges. The apparatus includes a slider holder adapted to releasably hold a slider receive a slider and an uppermost position where the fabric-pieced slide fastener chain is threaded through the slider. The apparatus additionally includes a slider holder retainer disposed on the path of vertical movement of the slider holder and adapted for retaining the slider holder stably, as the slider holder assumes the uppermost position for the threading operation, so as to prevent the slider holder from being wobbled and pulled downstream by the fabric-pieced slide fastener chain during the threading thereof through the slider.

Abstract: A two-sum comparator. The two-sum comparator provides a comparison of two sums that is carried out by comparing their difference to zero. The formation of the difference of two sums that is essentially a four-addend addition is reduced to a two-addend addition according to a carry-save principle. The remaining two-addend addition is not carried out, but rather, one addend is directly compared to a negative of the other addend in a binary counter comparator.

Abstract: A diagnostic and therapeutic apparatus for gastrointestinal diseases which has a central control unit a set of diagnosis and therapy lead electrodes, diagnosis and therapy switch, acupunctural point stimulating pulse amplifier, display, and a human body spectrum generator. During the diagnostic operation, bioelectric signals from a patient stomach received by the lead electrodes are supplied to the central control unit via the switch and displayed on a display. During the therapeutic operation, the human body spectrum generator radiates a simulated human body spectrum which matches with the spectrum of the human stomach to reinstate the abnormal spectrum of the patient so that gastrointestinal diseases can be cured. Meanwhile, the acupunctural point stimulating pulse amplifier introduces point stimulating pulses to the relevant accupoints of the patient body via the switch and lead electrodes for therapeutic purpose.

Abstract: A programmable delay circuit of the present invention is comprised of an input terminal to which an input signal to be delayed is supplied, N (N.gtoreq.

Abstract: A programmable controller controlled machine for extruding cellular food product between a rotory surface and a stationary surface, wherein the rotory surface is controllably repositioned between four axial positions relative to the stationary surface to obtain optimal product formation. Control is exerted over operating parameters in accordance with predetermined scales/ratios, at least some which can be adjusted during operation.

Abstract: A circularly polarizing RF antenna suitable for use in a magnetiic resonance imaging tomography apparatus has four current loops, each formed by two U-shaped conductors with the ends of the lateral legs of the U-shaped conductors disposed opposite to each other in mirror-symmetric fashion, and the ends of the lateral legs being bridged by a resonant capacitor. The current loops are arranged on a carrier which forms a portion of a hollow cylinder, and which is divided in an axial direction between two of the current loops, so that at least one of the current loops is removable without electrical contacts. A divisible RF antenna is thus achieved into which a head or a knee joint can be easily introduced for imaging.

Abstract: In an electromagnetic power relay, a spring carrier and a cooperating contact element are plugged into slots in a base member from two opposite sides. Terminal rails extending parallel along the outside walls of the base member to an end face of the relay have, at the end face, portions which are crimped inwardly within pockets in the housing cap. The terminal elements then emerge from the outside walls of the relay at a predetermined insulating distance from the side walls of the relay and form solder and plug terminals. Within the pockets, the terminal elements are provided with fastening projections for anchoring, the fastening projections lying in the inwardly offset planes of the terminal elements. An adequate insulating distance from the side walls of the relay is, thus, provided so that the relays may be tightly grouped on a printed circuit board.

Abstract: A circularly polarizing RF antenna suitable for use in an MRI apparatus for obtaining tomograms of an examination subject includes two antenna systems, each having a winding, having two lateral legs and a middle leg, and a return path which form a resonant circuit in combination with one or more resonant capacitors. The middle legs of the two antenna systems are disposed so that they cross one another. One or more decoupling capacitors are provided between the two antenna systems. A circularly polarizing antenna for a magnetic resonance imaging system is thus obtained having a magnetic field vector in the imaging region which rotates in planes parallel to the pole surfaces of a C-shaped magnet which generates the fundamental magnetic field in the magnetic resonance imaging apparatus.

Abstract: The method of the present invention comprises detecting a recording pattern, which is different for each tract, in each of track groups consisting of a predetermined number N or tracks recorded in advance on an optical disk(1), generating a tracking signal S.sub.ET whose signal level changes on the positive and negative sides of a target track T.sub.0 as the center, and moving the optical spot to the target track T.sub.0 on the basis of this tracking signal S.sub.ET. In this manner, it becomes possible to prevent uncontrollable movement of the optical spot and align the optical spot to a desired recording track within a short period of time.

Abstract: An apparatus for manufacturing slide fasteners of a predetermined length from a continuous slide fastener chain comprising a gripper unit for gripping a leading end of the continuous slide fastener chain and feeding the slide fastener chain longitudinally along a feed path, a cutter unit for cutting the slide fastener chain into a succession of slide fasteners of a predetermined length, and a plurality of slider holding units disposed downstream of the cutter unit along the feed path. The slider holding units are movable between a first position to hold a corresponding number of sliders in the feed path of the slide fastener chain to thread the sliders onto the slide fastener chain from the leading end thereof as the slide fastener chain is fed downstream by the gripper unit, and a second position remote from the first position.

Abstract: A circuit board assembly for data equipment such as those having large numbers of layers and great power requirements in a small space having high computer performance, includes a multi-layer printed circuit board in laminated technology provided with voltage supply and signal carrying layers and pressure contacts at both sides connecting the multi-layer printed circuit board to further printed circuit boards. The further printed circuit boards, which are formed using micro-wiring technology, include backsides which are free of electrical components and connected to the pressure contacts and opposite sides carrying integrated electrical elements such as circuit chips forming an electrical circuit. Cooling plates are pressed against the surfaces of the circuit chips.

Abstract: A transmission antenna for a nuclear magnetic resonance apparatus has a capacitor connected in parallel with it via at least one PIN diode, and a reception antenna for the apparatus has a capacitor connected directly in parallel with it and an inductor connected in parallel with it via a PIN diode. The PIN diodes are connected to a control voltage in a series circuit. Given a first direction of the control voltage, the PIN diodes are conductive, so that the transmission antenna is tuned to the nuclear magnetic resonant frequency due to cut-in of the capacitor and the reception antenna is detuned to the cut-in of the inductor. Given a second direction of the control voltage, the reception antenna is tuned to the nuclear magnetic resonant frequency and the transmission antenna is detuned with respect to the nuclear magnetic resonant frequency. An unwanted, local super-elevation of the RF power cannot occur with this antenna.

Abstract: An offset printing machine is disclosed wherein printing cylinders used for a new run are carried by a carriage into a vicinity of a printing unit of the machine. The printing unit is provided with two lateral movable arms which automatically and successively transfer every printing cylinder from the printing unit onto the carriage and inversely, the new cylinders from the carriage onto the printing unit.