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| Number | Title | Issue Date |
| 5311398 | Housing for motor vehicle electronic system A housing for installation in motor vehicles to accommodate SMD electronic components disposed on one side of a multi-layer circuit board or film. A metal plate serves as the carrier for the circuit board or film, with the planar expanse of the metal plat... | 05/10/1994 |
| 5257288 | Data transmission system A data transmission system and method in which digitalized information is transmitted via a data transmission link in complete binary words from a transmitter to a receiver. For data transmission, a complete binary word with a defined total bit number is ... | 10/26/1993 |
| 5250466 | Method for manufacturing ohmic contacts for compound semiconductors A method for manufacturing ohmic contacts on an n-doped semiconductor layer of a III-V compound semiconductor wherein initially an AuGe layer is formed on the n-type III-V compound semiconductor, with the thickness of the AuGe layer being between 5 and 50... | 10/05/1993 |
| 5245509 | Printed circuit board arrangement with surface-mounted connector strip and a method for manufacturing the arrangement The invention relates to a printed circuit board disposed on a film serving as the carrier material. A connector strip having a large number of connection pins is disposed on the printed circuit board using surface-mounting technology. Connector strips of... | 09/14/1993 |
| 5225669 | Sensor system with adjustment for ambient conditions A sensor system for recording the ambient conditions of an optical sensor having a transmitter unit and a receiver unit linked by an optical gap. An electronic sensor unit is provided that predetermines a basic setting of the optical sensor independent of... | 07/06/1993 |
| 5220607 | Digital switching signal in stereo decoders and circuit array for generation thereof In stereo receivers with digital decoding pulse generation, interference by the harmonics of the digital switching signal with signals in adjacent channels or with carrier signals in the sideband lead to faults that can be perceived in the audible range a... | 06/15/1993 |
| 5208728 | Housing for fitting in motor vehicles to hold electronic components To make housings used in automotive engineering for holding electronic components suitable for engine compartment installation, complex measures are taken that involve high manufacturing costs. In accordance with the invention, a housing is provided that ... | 05/04/1993 |
| 5203019 | Radio receiver with improved automatic gain control In a radio receiver in accordance with the heterodyne principle or with the homodyne principle, two additional transmission channels are provided for interference suppression. The two additional transmission channels have a different degree of distortion.... | 04/13/1993 |
| 5202646 | Output stage for amplifiers An output stage for an amplifier includes first and second load current-carrying n-p-n output transistors disposed in different respective amplifier branches having different amplification properties. Negative feedback and limiting circuitry provides a ne... | 04/13/1993 |
| 5194922 | Luminescent semiconductor element Described is a luminescent semiconductor element having the following structure: a first thick connecting semiconductor layer of uniform material composition, a thin over-graded layer arranged on the first semiconductor layer and comprising connecting sem... | 03/16/1993 |
| 5181084 | Infrared light emitting diode with grading The invention relates to a semiconductor arrangement used in particular for the manufacture of infrared-emitting diodes. A first Si-doped GaAlAs layer containing an n-conductivity zone and a p-conductivity zone is deposited onto an n-doped GaAs semiconduc... | 01/19/1993 |
| 5159532 | Electronic control unit with multiple hybrid circuit assemblies integrated on a single common ceramic carrier The object of the patent application is an electronic control unit with triggering and power components, in particular an ignition control unit, whose electronic circuit comprises various assemblies in hybrid technology. To reduce the assembly expenditure... | 10/27/1992 |
| 5130526 | Circuit array for optical Schmitt trigger The invention relates to a circuit array for an optical Schmitt trigger in which an optical input signal is converted into an electrical output signal by means of a light-sensitive receiver element, an amplifier stage, a Schmitt trigger stage and an outpu... | 07/14/1992 |
| 5124575 | Circuit array for setting the operating point of a transistor In a circuit array for setting the operating point of a first transistor. A current-inverting circuit (current mirror circuit) has a pinch resistor connected in series with the base-emitter path of another transistor within the current inverting circuit. ... | 06/23/1992 |
| 5122878 | Television tuner and circuitry for switching between two frequency ranges An input circuit and a television tuner for at least two frequency bands. The television tuner has a joint pre-amplifier whose output is connected to two independent, switchable and tunable band-pass filter circuits for the two frequency bands, preferably... | 06/16/1992 |
| 5096844 | Method for manufacturing bipolar transistor by selective epitaxial growth of base and emitter layers The invention relates to a method in particular for manufacturing bipolar transistors. By applying selective epitaxy methods and by using self-adjusting techniques, the process sequence is shortened and the transistor properties are improved.... | 03/17/1992 |
| 5084804 | Wide-area lamp The invention relates to a wide-area lamp in which luminescent semiconductor elements in a wide-area spread are connected to one another by a conducting path structure and the individual luminescent semiconductor elements are surrounded by casing elements... | 01/28/1992 |
| 5082339 | Optical read-write head with diffraction grating structure The invention relates to a holographic optical component and its use for reading the writing/reading heads. This application requires a minimum size and low weight for the holographic optical components. This is achieved in accordance with the invention b... | 01/21/1992 |
| 5075822 | Housing for installation in motor vehicles The invention relates to a housing for installation in motor vehicles to hold electronic components arranged on a PCB. In accordance with the invention, the housing comprises a trough-shaped housing section and a metal lid. In addition, several heat sinks... | 12/24/1991 |
| 5067076 | Circuit arrangement for serial data transfer A circut arrangement for serial data transfer has a transmitting device with several bit-parallel input information units, a serial data transfer line and a receiving device via which the transferred data are correspondingly converted into bit-parallel ou... | 11/19/1991 |
| 5053923 | Electronic control unit with common ground connection to a heat sink The invention relates to an electronic control unit, in particular an ignition control unit, containing an electronic circuit in the form of a hybrid circuit arranged on a heat sink, and having a plastic housing element containing the plug terminal jack. ... | 10/01/1991 |
| 5053352 | Method of forming an integrated circuit with pn-junction capacitor In a method of forming an integrated circuit array having a capacitance formed by a pn-junction and separated from other components by a pn-junction, semiconductor areas are provided which connect that zone of the two semiconductor zones forming the pn-ju... | 10/01/1991 |
| 5045481 | Method of manufacturing a solar cell The invention relates to a solar cell which consists of a doped semiconductor base body and metallic connection contacts on the front and rear sides. For interconnection with further solar cells to form solar modules in series or parallel connection, at l... | 09/03/1991 |
| 5036233 | Integrated semiconductor circuit having a unidirectional semiconductor component for preventing saturation of bipolar transistors In digital circuit technology, bipolar transistors are advantageously used for switching thanks to their high mutual conductance. Since a transistor operated in the saturation state has a retarded switching behavior, saturation must be avoided for rapid s... | 07/30/1991 |
| 5025260 | Measuring system The invention relates to a measuring system having a measuring array comprising a transmission and reception section and an electronic evaluation unit. In accordance with the invention, the distance between a first point and a second point is determined b... | 06/18/1991 |
| 4998094 | Safeguard device A safeguard device is provided with a high frequency sensor which triggers an alarm device after receiving high frequency energy. To prevent the alarm device being rendered ineffective by high frequency shielding of the safeguard device, a metal sensor is... | 03/05/1991 |
| 4996569 | Integrated circuit In an integrated circuit array having a capacitance formed by a pn-junction and separated from other components by a pn-junction, semiconductor areas are provided which connect that zone of the two semiconductor zones forming the pn-junction of the capaci... | 02/26/1991 |
| 4984031 | Integrated circuit arrangement In an integrated circuit arrangement with a protective arrangement at least partially integrated into it and protecting the integrated circuit arrangement from high-energy electrical faults, the protective arrangement has an ohmic resistance in the form o... | 01/08/1991 |
| 4978939 | Settable resistor A settable resistor has a resistance path array (4) to which is allocated a contact piece (9) which is guidable in the longitudinal direction (13) over the resistance path array and has an adjusting device for the position of the contact piece. In order n... | 12/18/1990 |
| 4975814 | Wide-area lamp The invention relates to a wide-area lamp and consists of a transparent mounting plate with conducting path structure on which a large number of luminescent semiconductor elements connected to the conducting path structure are mounted in a wide-area sprea... | 12/04/1990 |
| 4974037 | Semiconductor arrangement with depletion layer majority carrier barrier The invention relates to a semiconductor arrangement consisting of a semiconductor substrate and arranged thereon a conductive semiconductor layer on which at least two ohmic connection electrodes are arranged in spaced lateral relationship to each other.... | 11/27/1990 |
| 4963947 | Semiconductor array The mean drift speed of charge carriers in a semiconductor element can be increased if this semiconductor element has narrow layers which are alternately n-doped and p-doped on their planes, with undoped semiconductor material between these layers. A stru... | 10/16/1990 |
| 4962439 | Squaring circuit A squaring circuit and an i2 t circuit utilizing the squaring circuit. The squaring circuit comprises a voltage-controlled oscillator and a frequency/current converter which are connected to one another, with the input voltage signal being supp... | 10/09/1990 |
| 4956615 | Input circuit for high-frequency amplifiers In an input circuit for high-frequency amplifiers having four transistors of the same conductivity type, the emitters of the first and second transistors (T1, T2) are connected to a reference point (M). The base of the first transistor (T1) forms the inpu... | 09/11/1990 |
| 4956305 | Process for fabricating an integrated circuit The invention relates to a pnp lateral transistor comprised of two regions of p-type conductivity which are incorporated into the surface of a semiconductor area of n-type conductivity and constitute the emitter and collector regions. The portion of the s... | 09/11/1990 |
| 4949146 | Structured semiconductor body A structured semiconductor body e.g., an integrated circuit or a transistor, based on an silicon substrate having barrier regions which contain polycrystalline silicon, preferably produced by a silicon MBE process. The barrier regions are required to deli... | 08/14/1990 |
| 4942439 | Light-emitting diode of GaAsP compound semiconductive material To improve the external quantum efficiency of light-emitting diodes made from semiconductive material of III/V compounds with lattice constants heavily dependent on the respective material composition of the mixed crystal, for example in GaAsP light-emitt... | 07/17/1990 |
| 4937534 | Band-pass amplifier In a band-pass amplifier having differential stage comprising two transistors fed from a joint current source, the collector of the first transistor is connected via a resistor to the base of a third transistor complementary to the first and second transi... | 06/26/1990 |
| 4931794 | Optoelectronic keyboard The invention relates to an optoelectronic keyboard comprising transmitting elements and receiving elements activated in multiplex operation, with the changes in the luminous flux caused by actuation of keys resulting in a signal which defines the actuate... | 06/05/1990 |
| 4924276 | Optoelectronic component Optoelectronic components, in particular those comprising a line of luminescent diodes arranged in a row, are provided according to the prior art with contacts that have a number of disadvantages, some of which are that the light efficiency is relatively ... | 05/08/1990 |
