Abstract: A multi-terminal surface-mounted electronic device with contact surfaces placed entirely or partly around several sides, as well as to a method for manufacturing it. The parts according to the invention allow assembly on a circuit board such as p.c.b. and foil in forward, backward and sideward direction. Previous multi-terminal surface-mounted electronic devices could as a rule be mounted in one direction only. For all other directions such as backwards and sidewards costly special constructions or fundamental changes to the circuit board (printed-circuit board, foil) were necessary. In accordance with the invention, an electronic component is located in a housing and both the electronic component and the housing are joined to a base strip. The base strip provides the terminals whose contact surfaces are so formed that they can embrace the entire housing either completely or partially.

Abstract: The light-emitting diode consists of a substrate and a light-emission-generating layer located on the substrate and embedded between the cladding layers of a double heterostructure. On the top cladding layer, a current diffusion layer is located on which there is a further contact layer structure. The current diffusion layer is sufficiently thin so as to hardly absorb any light-emission. Thus, it can be economically produced by means of the MOCVD process. At the same time, the contact layer structure is provided with branched and finger-type electrodes for distributing the current together with the current diffusion layer onto the surface of the light-emission-generating layer. However, the structural size of the branched and finger-type electrodes is selected such that these can still be manufactured by the standard processes used in LED manufacture.

Abstract: This disclosure describes a procedure for soldering an insulated wire where the wire end features a U- or V-shaped hook with one bending point and is introduced such into the soldering hole of a printed circuit board that the bending point protrudes from the other side of the soldering hole.

Abstract: A data transmission method in a real-time data processing system, comprising a control unit and at least one function unit linked to this control unit through a data line, is described that permits noise-free and noise-insensitive transmission of data. In accordance with the invention, the data is stored in a buffer memory made up of a shift register and an intermediate storage, before being loaded into a main memory of the function unit. Transfer to the intermediate storage takes place only if certain conditions are satisfied that identify transmission faults. Before the data is stored in the main memory, the data is read-back into the control unit memory for the purposes of checking and there it is compared with the original data. If there is no correspondence, data transmission is performed again.

Abstract: To control the output from an induction motor with a main winding and an auxiliary winding with multiple taps, varying output stages of the motor are adjusted by the activation of the auxiliary winding or one of its part-windings. According to the invention, the coarse adjustment of the power to be output by the motor is effected by the selection of a certain output stage and a repeating digital m-bit keying pattern generated simultaneously for the purpose of fine adjustment, so that the motor is driven alternately at the set output stage and the next higher or next lower output stage as a function of the sequential logic values of the keying pattern. By means of the process complying with the invention, precise power control is possible which can be used to advantage for the adjustment of output.

Abstract: A tilt-sensor for detection of a tilt angle is proposed, in particular for use as a roll-over sensor in a car for activation of an occupant protection device, comprising a massive body and an associated receptacle and having the following features: the receptacle is V-shaped in form, an inflection arm is disposed at each inner side of each of the two legs of the V-shaped receptacle, the massive body is configured in such a fashion that it seats, flush with the surface, on the inflection arms at the inner side of the V-shaped receptacle, and extension measurement elements are provided for the production of a tilt-angle dependent measuring signal to measure the deformation caused by the massive body during a rotation or deflection of the tilt-sensor through the tilt angle.

Abstract: A photo interrupter which features at least one transmission element and at least one receiver element separated by an optical transmission path. To ensure a flexible structure with variable characteristics, the photo interrupter features a modular structure comprised of two joinable housing parts. In order to reduce production costs and simplify the production process, the housing parts of the photo interrupter respectively feature one carrier unit each which is designed as a panel of a mounting strip, as well as at least one semiconductor device located on the carrier unit, and a housing body forming the two side surfaces of the photo interrupter, which housing body--in a first partial area of the carrier unit containing the semiconductor device(s)--encloses the carrier unit; at least one semiconductor device of the one housing part will be a transmission element, and at least one semiconductor device of the other housing part will be a receiver element.

Abstract: A semiconductor device for bidirectional non-conducted optical data transmission by means of electromagnetic waves from within the infrared waveband will be described. The semiconductor device will comprise a transmission chip emitting radiation within the IR waveband, a receiver chip responding to radiation within the IR waveband by emitting a photo-electric current, as well as an integrated circuit for amplifying the photo-electric current of the receiver chip. These three semiconductor chips will be mounted onto a lead frame configuration comprising at least three leads. On the flat side face of the lead frame configuration, the integrated circuit will be located on a first level or plane which is parallel to the longitudinal direction of the lead frame configuration. On the end faces of the leads, the transmission chip and the receiver chip will be located on a second level or plane which runs in a perpendicular direction to the first level or plane.

Abstract: A method for monitoring the opening and closing process in a system having at least one component moved by electric motor is described.

Abstract: In a method for controlling the braking process of a motor vehicle, nonlinear boosting of the braking force is performed if the actuating speed of the brake pedal exceeds a specified trigger threshold value. This trigger threshold value is formed as a function of the instantaneous speed of the motor vehicle, the pedal position of the brake pedal or a variable directly proportional thereto, and of a motor vehicle specific, brake dependent correction value.

Abstract: The invention relates to a method for contacting SIPOS-passivated semiconductor zones on a semiconductor body, where the removal of the oxide layer from the wafer surface takes place at the same time as the oxide etching before SIPOS passivation. The double-layered SIPOS passivation consists here of a N-SIPOS layer and a O-SIPOS layer. For contact opening, only the N-SIPOS layer is removed by wet chemical etching. By annealing the previously vaporized and structured metallization, a good contact results which can also carry a high current. The process according to the invention involves a simple sequence of operations and an underetching of the passivation layers and the disadvantages resulting from this are reliably avoided.

Abstract: Initially, control data are transmitted from the pickup of the remote control to the system when the remote control is initially operated. The system responds to the control data and transmits the current system values back to the pickup of the remote control where, after verification of the current system values data received by the remote control pickup, a control command is transmitted by the remote control pickup to the system, with the command causing the system to accept the control data transmitted by the initial operation of the remote control.

Abstract: A circuit arrangement for the digital identification of television transmission standards, particularly PAL, SECAM and NTSC. Provision is made for transmission standard demodulation stages connected in parallel to which a signal composed of a chromaticity signal and a synchronizing character is directed and which are each cyclically activated by control signals for a certain period of time. A trigger is also provided, together with an up-down counter, a circuit arrangement for the evaluation of the value delivered by the up-down counter, and a control logic.

Abstract: A device is proposed to determine the rotational speed of a transfer element (3) arranged in variable-diameter pulleys (1, 2) of a continuously variable transmission system, the said device Consisting of a sliding stock (4, 15), with a sensor (10, 16) which is supported on the transfer element (3) on the inner sides of the variable-diameter pulleys, which sliding stock is connected to the transmission case (8) by a spring (6) loaded rocker arm (5) mounted in a swivelling joint (7).With the knowledge of the peripheral speed of the transfer element (3), the rotary speeds (N1, N2) of the set of variable-diameter pulleys (1, 2) and the effective transmission radii (r1, r2), the slippage can be determined between the transfer element (3) and the sets of variable-diameter pulleys (1, 2).

Abstract: A piezoelectric acceleration transducer characterized by a flexible element formed of a piezoelectric material with two external electrodes, a support member having two plate-type supporting components between which the flexible member is arranged, and a carrier plate to which the support member is mechanically and electrically connected such that the principal axis of sensitivity of the flexible element lies in the same plane as the carrier plate. The supporting components may be formed of a nonconducting material with a electrically conductive coating on the side facing the flexible element and at a point of contact with the carrier base. Alternatively, the supporting components may be made from an electrically conductive material.

Abstract: This invention concerns a capacitive acceleration sensor complete with planar build-up, in particular for use as a component part of a vehicle occupant protection system within a motor vehicle. A self-supporting structure will be movably located within a hollow space between two semiconductor elements which are electrically insulated from each other but mechanically bonded, where an acceleration force acting on the inert mass of the self-supporting structure will cause a change in the distance between this self-supporting structure and the semiconductor element. This produces a change in capacity which can be evaluated by means of suitable circuitry.

Abstract: Increasingly, motor vehicles are being equipped with safety systems for vehicle occupants and where these safety systems are controlled by electrically actuated triggering means such as ignition pills for airbags that in turn are controlled from an output stage. The invention demonstrates a method that ensures safe and uninterrupted operation of these triggering means and which protects the output stage from being destroyed should a fault occur as a result of, for example, an ignition pill by-pass.

Abstract: Arrangement for detecting the occupancy of a seat for safety systems having a plurality of light emitters, which are imaged onto the seat via an optical unit and the luminous spots created there are imaged via a further optical unit onto a photodetector field. The contour is acquired with a microprocessor via the evaluation of the position of these luminous spots on the photodetector field, and thus the type of occupancy is determined. This information can be supported via passive IR detectors for the acquisition of the temperature differential.

Abstract: HF mixing stage in the form of a common-base circuit including: two bipolar amplifying transistors; two switching stages each assigned to an amplifying transistor and each having two emitter-coupled bipolar switching transistors and with two signal sources which supply the bases of the switching transistors with superimposed signals; two nodes at which the emitters of the switching transistors are connected to the collector of the associated amplifying transistor; two further output nodes at which the collectors of each of two switching transistors in different switching stages are connected together; circuit elements for electrical isolation through which the emitters of the amplifying transistors are connected together; an input signal source with associated internal resistor of which the one terminal is connected via the circuit input to the circuit elements for electrical isolation and the other terminal is connected to reference potential and whose signal is to be transposed into another frequency range

Abstract: A method is described for operation of a motor vehicle alarm system having a central control unit connected to several control units of the motor vehicle. All non-safety-relevant control units of the vehicle are bidirectionally connected to the central control unit of the alarm system, where a certain code for the respective activation state of the alarm system is stored in the non-safety-relevant control units and can be read out there. In the case of a replacement of control units the replaced control units are activated by the non-replaced control units in the original form when the vehicle is started. At least a part of the non-safety-relevant control units is deactivated or negatively affected in operation when the alarm system is not deactivated correctly.