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| Number | Title | Issue Date |
| 7388565 | LCD driver with adjustable contrast An LCD display driver provides adjustable contrast independent of multiplexing requirements by generating each COM signal in a time slot of a repeating signal frame, with each COM signal containing one or more active periods and one or more inactive periods. The rel... | 06/17/2008 |
| 6677812 | Method and apparatus for removing noise spikes The invention provides a method for removing noise spikes from an electrical input signal having an AC component, comprising the steps of determining the actual rms value of the input signal, low pass filtering the input signal, producing a variable offse... | 01/13/2004 |
| 6522689 | Monitoring circuit for a data transmission network A monitoring circuit for a data transmission network having a plurality of transmissive and receptive network nodes and a double-line bus connecting the network nodes and serving for redundant double transmission of digital communications, with a first li... | 02/18/2003 |
| 6493401 | Receiving circuit and method for a controlled area network system A receiving circuit is described for a CAN (Controlled Area Network) system with digital data transfer via a bus with parallel, redundant pulse signal transfer via two fines. The receiving circuit includes a comparator circuit assembly for differential ev... | 12/10/2002 |
| 6473662 | Signal compressor for audio apparatus A method of signal compression of a signal to reduce the large dynamic range, for example, of the output signal of a CD player in such a way that soft passages of a piece of music are reproduced in somewhat louder manner and very loud passages of a piece ... | 10/29/2002 |
| 6470393 | Interface for a data node of a data network An interface for a data node of a data network including a plurality of data nodes are connected to each other by way of a bus line and activatable in selective manner by address codes transmitted via the bus line. The interface includes an activating add... | 10/22/2002 |
| 6441460 | Largely voltage-independent electrical resistor formed in an integrated semiconductor circuit An electrical resistor integrated in an integrated semiconductor circuit to have a useful resistor with two spaced-apart useful resistor terminal contact regions and a useful resistor region of semiconductor material located therebetween; and an auxiliary... | 08/27/2002 |
| 6417687 | Slope control device for an electric data transmission system A slope control device for an electric data transmission system having a first line and a second line for differentially transmitting binary data pulses in such a manner that a first logic value of the data pulses has a high potential on the first line an... | 07/09/2002 |
| 6411717 | Switched capacitor filter with a neutral bypass setting An SC filter with intrinsic anti-alias function for adjustably decreasing or increasing the amplitude of audio signals in a predetermined frequency range. The SC filter includes a filter module having an RC network with at least one frequency-response-det... | 06/25/2002 |
| 6374374 | Error processing circuit for a receiving location of a data transmission system An error processing circuit for a receiving location of a system for transferring binary data in the form of pulse sequences, wherein the system has a number of receiving locations connected via a double-line bus having a first line and a second line. The... | 04/16/2002 |
| 6353908 | Method of and circuit arrangement for digitally transferring bit sequences in selective manner A method of and a circuit arrangement for data transfer between a master means and slave means, in which bit sequences are transferred each having an address field for addressing the respective slave means to be controlled, a control field for control inf... | 03/05/2002 |
| 6351162 | Circuit arrangement for controlling an inductive load An inductive load is controlled using a PWM control signal at the control terminal of a current switch. In parallel to the first circuit branch containing the inductive load to be controlled, there is located a second circuit branch including a flyback di... | 02/26/2002 |
| 6323695 | Comparator with controllable bias current source A comparator having a differential amplifier with a signal input to receive an input signal and a reference input to receive a reference voltage, and having a controllable bias current source for supplying to the differential amplifier a bias current that... | 11/27/2001 |
| 6294905 | Method and circuit for controlling current in an inductive load A control or adjusting circuit for a load, a desired signal is compared to an actual signal corresponding to the state of the load, and a PWM control signal is generated in a control signal generating circuit in accordance with the comparison result. The ... | 09/25/2001 |
| 6281720 | Electric integrated circuit A circuit arrangement which, in accordance with its mode of control, operates either as input circuit or as output circuit and includes a series connection with an inverter stage, a filter stage, a cross-current avoiding stage, a switching-on voltage redu... | 08/28/2001 |
| 6265921 | Circuit configuration for shaping slew rate An electric circuit configuration for shaping the slew rate of a pulsed output voltage occurring at an output terminal and for detecting a short circuit at the output terminal, having: a switchover control circuit for controlling the slew rate of the outp... | 07/24/2001 |
| 6237126 | Electrical analysis of integrated circuits For an analysis of an electrical behaviour of a specific cell of a monolithically integrated circuit, a simulation model is used which is composed of a fine model part of the cell of interest and a coarse model part of the remainder of the integrated circ... | 05/22/2001 |
| 6166925 | High voltage step down DC converter A DC converter for stepping down DC voltage having two input terminals (E1, E2) to be connected to an input DC voltage source with a high voltage level; two output terminals (A1, A2) for taking a regulated low output DC voltage; a coil (TS) having a cente... | 12/26/2000 |
| 6133775 | Integrated circuit with switched capacitor A switched capacitor wherein one of the plates of the capacitor to be switched is fed with the input signal via a transistor switch receiving as control signal at the gate thereof a pulse train with predetermined frequency. For compensating the parasitic ... | 10/17/2000 |
| 6124739 | Monolithically integrated signal processing circuit A monolithically integrated signal processing circuit comprising a signal series branch connected between a signal input terminal and a signal output terminal; a reference potential terminal; a series capacitor inserted in serial manner in the signal seri... | 09/26/2000 |
| 6111965 | Method and apparatus for offset compensation of a signal processing circuit A method for offset compensation of a signal processing circuit in whose signal path a circuit configuration with offset is disposed, wherein the circuit configuration with offset is temporarily decoupled from the signal path of the signal processing circ... | 08/29/2000 |
| 6104728 | Device for selecting address words by demultiplex decoding A device for selection of address words, each having n bit locations and serving for addressing m different receiving locations of a digital communications apparatus, comprising a digital acceptance device via which address words can be selected which are... | 08/15/2000 |
| 6104243 | Integrated temperature-compensated amplifier circuit In a fully integrated logarithmic amplifier, an input current is fed via a diode, and in a reference current branch parallel thereto, a constant current flows through a similar diode. A voltage divider forms of the differential voltage between the two dio... | 08/15/2000 |
| 6100742 | Driver circuit for slope-controlled pulse switching of a load A driver circuit for slope-controlled pulsed switching of a load having a MOS switching transistor switching the load and a control loop with an amplifier having an amplifier input coupled with a switch control pulse source, an amplifier output connected ... | 08/08/2000 |
| 6031404 | Analog-signal to square-wave-signal reshaping system with offset compensation An analog-signal to square-wave-signal reshaping system for threshold-dependent reshaping of an analog input signal to a square wave signal; comprising an offset-inflicted reshaping circuit having a signal input adapted to be fed with the analog input sig... | 02/29/2000 |
| 6028469 | Electric circuit arrangement comprising a switchable feedback branch An electric circuit having a switchable feedback branch switchable between a first feedback state, in which the circuit arrangement has a frequency response that is stable with respect to an oscillation tendency, and a second feedback state, in which the ... | 02/22/2000 |
| 6021121 | Device, method, and apparatus for selecting address words using digital segment filters A device for the selection of address words each having n bit locations and serving for addressing m different receiving locations of a digital communication module, in at least one of the receiving locations, including a digital acceptance module through... | 02/01/2000 |
| 6020779 | Electrical switching device with control signal input An electrical switching device including a switch having a control terminal, a control circuit coupled between a first voltage source terminal and a second voltage source terminal and a control signal input coupled to receive a binary switching control si... | 02/01/2000 |
| 6014304 | Method of and apparatus for controlling a plurality of mutually communicating actuators The invention relates to a method of and an apparatus for controlling a plurality of mutually communicating actuators, each of the actuators having at least one signal sensor for determining the state of the actuator, with at least one control apparatus g... | 01/11/2000 |
| 6008669 | Monolithic integrated multiple mode circuit A monolithic integrated multiple mode circuit having an output stage, a transfer gate, a control circuit arrangement, and a well contacting region where a well potential may be applied, the multiple mode circuit adapted to be controlled into an output sta... | 12/28/1999 |
| 6000002 | Protection circuit for program-controlled electrical equipment A protection circuit for the prevention of program interruptions of electrical equipment controlled on the basis of program step clocks, by too frequent occurrences of non-maskable interrupt signals. This protection circuit comprises a controllable interr... | 12/07/1999 |
| 5995817 | Device for varying the cutoff frequency of a low-pass filter For eliminating the emphasis given an audio signal in the transmitter, an audio signal processor of an audio device (e.g., a car radio) contains a low-pass filter. In order to attenuate the spurious higher-frequency signal fractions in case of poor recept... | 11/30/1999 |
| 5973617 | Control circuit with adjustable standby oscillator A control circuit adapted to be switched to a standby mode during periods without control requirement and to be repeatedly reset during the standby mode of operation for a short wake-up period each to a full mode of operation. The control circuit comprise... | 10/26/1999 |
| 5953430 | Filter circuit and audio signal processor provided therewith A filter circuit adjustably decreases or increases the amplitude of audio signals in a predetermined frequency range. The filter circuit includes a filter module having an RC network with at least one frequency-response-determining RC member whose resisto... | 09/14/1999 |
| 5943205 | Driver and overload protection circuit Driver and overload protection circuit for an electrical switch means. Switching control pulses with a minimum edge duration are fed to a two stage comparator circuit having first, lower and second, higher comparator threshold values. When the lower compa... | 08/24/1999 |
| 5920632 | Apparatus for continuously switching a demodulator from stereo operation to mono operation, and vice versa In a stereo decoder, channel separation takes place with the aid of a demodulator to acquire signals for stereo operation. At low received field strength there is a continuous switchover to mono operation for each channel in the demodulator. For this purp... | 07/06/1999 |
| 5915030 | Electric muting circuit An electric muting circuit for soft muting of an audio signal is shown. It comprises a digitally controllable attenuation circuit having an audio signal input, an audio signal output and a control signal input and also comprises an up/down counter having ... | 06/22/1999 |
