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| Number | Title | Issue Date |
| 7440861 | Concept of compensating for piezo influences on integrated circuitry The inventive circuitry on a semiconductor chip includes a first functional element having a first electronic functional-element parameter that exhibits a dependence relating to the mechanical stress present in the semiconductor circuit chip in accordance with a fir... | 10/21/2008 |
| 7437260 | Concept of compensating for piezo influences on integrated circuitry A semiconductor chip includes a first functional element having a first electronic functional-element parameter exhibiting a dependence relating to the mechanical stress present in the semiconductor circuit chip, and being configured to provide a first output signal... | 10/14/2008 |
| 7400132 | Current sensor and method of manufacturing the same A current sensor includes a semiconductor substrate, a ring shaped magnetic core having a center opening and a gap and provided to a surface of the substrate, and a Hall element provided to the surface and placed in the gap of the magnetic core such that a control c... | 07/15/2008 |
| 7339245 | Hall sensor A Hall sensor on a semiconductor substrate includes a Hall plate in the semiconductor substrate, where the Hall plate includes a first zone having a first conduction type. The semiconductor substrate also include a second zone having a second conduction type. A spac... | 03/04/2008 |
| 7302357 | Concept for compensating piezo-influences on an integrated semiconductor circuit A compensation signal, which derives the mechanical stress, which acts on an integrated semiconductor circuit, from two partial compensation signals, which are generated by semiconductor elements with different stress characteristics, can be determined in more detai... | 11/27/2007 |
| 7259546 | Temperature compensating integrated anti-differential current sensing system A system for current sensing includes a first Hall effect sensor and a second Hall effect sensor constructed to provide feedback indicating current flow through a conductor susceptible to external magnetic flux. A housing is configured to position the first Hall eff... | 08/21/2007 |
| 7205622 | Vertical hall effect device A vertical Hall effect apparatus, including methods thereof. A substrate layer can be provided upon which an epitaxial layer is formed. The epitaxial layer is surrounded vertically by one or more isolation layers. Additionally, an oxide layer can be formed above the... | 04/17/2007 |
| 7205757 | High precision current sensor A current sensor for measuring an electric current flowing through a current bus bar includes: a magnetic core with an opening, through which the current bus bar passes with a predetermined interval; and a first magnetic sensor for detecting magnetic flux density in... | 04/17/2007 |
| 7197974 | Position sensor A position sensor includes a stationary frame supporting a rotatable spool onto which a cable is wound in a plurality of individual windings. A distal end of the cable extends through a lead guide for attachment to an object whose position is desired to be sensed. A... | 04/03/2007 |
| 7141964 | Adaptive integrated circuit for magnetoresistive sensors A device, system and method for adaptively tracking amplitude boundary values of a real time sensor output signal. In accordance with the method of the present invention, an amplitude boundary value, which may be a peak or min amplitude value, representing the curre... | 11/28/2006 |
| 7042209 | Measuring device for detecting a rotation angle in a contactless manner A measuring instrument for contactless detection of an angle of rotation comprises a magnetically nonconductive rotor, on which a magnet is disposed, and a stationary magnetically sensitive element for generating a measurement signal. The magnetically sensitive elem... | 05/09/2006 |
| 7038447 | Sensor circuit and method of producing it A sensor circuit includes a sensor element, a current source for supplying an operating current for the sensor element and an amplifier circuit for amplifying a sensor voltage produced by the sensor element when applying the operating current, wherein the amplifier ... | 05/02/2006 |
| 6939736 | Ideal operational amplifier layout techniques for reducing package stress and configurations therefor A method of reducing package stress includes placing matched components of an op-amp substantially in a region of a die having the least stress gradients. The region is located in the center of the die. Further, the center is the common centroid of the die. The matc... | 09/06/2005 |
| 6937954 | Signal processor for use in electronic compass In a signal processor for use in an electronic compass for controlling an offset voltage generated in an analog signal process and automatically controlling an amplification gain, an analog signal processor 52 amplifies signals Sx and Sy, and controls an offs... | 08/30/2005 |
| 6906514 | Concept for compensating the influences of external disturbing quantities on physical functional parameters of integrated circuits A circuit for generating an output signal, which depends on a physical useful quantity includes means for detecting the physical useful quantity, wherein the means for detecting is arranged to generate an output signal, which depends on the physical useful quantity,... | 06/14/2005 |
| 6759843 | Sensing methods and systems for hall and/or MR sensors Magnetic sensing methods and systems are disclosed. A minimum magnetic signal output and a maximum magnetic signal output can be detected utilizing a sensor comprising a peak detector circuit associated with a filter averaging circuit and one or more magnetic elemen... | 07/06/2004 |
| 6727693 | Circuit configuration and sensor device The circuit configuration converts an input signal into a binary output signal. The circuit has at least one comparator, at least one demodulation unit, and at least one clock unit. The demodulation unit has two or more capacitors and two or more switches controlled... | 04/27/2004 |
| 6720761 | Hall device biasing circuit and magnetism detection circuit including the same A Hall device biasing circuit includes a plurality of terminals for applying a bias voltage to a plurality of Hall devices connected in series, respectively. A magnetism detection circuit includes a plurality of Hall devices connected in series; and a Hall device bi... | 04/13/2004 |
| 6693419 | Proximity detector A proximity detector includes an offset circuit for bringing at least one of a magnetic field signal and a tracking signal towards the other one of the magnetic field signal and the tracking signal when the detector output signal changes state. A magnetic... | 02/17/2004 |
| 6657476 | AC-coupled sensor signal conditioning circuit A method and apparatus for minimizing errors in a sensor device due to signal amplitude variation are disclosed herein. A signal output from the sensor device is amplified and, thereafter, AC-coupled to a comparator such that the amplification and AC-coup... | 12/02/2003 |
| 6622012 | Magnetic pole insensitive switch circuit A switch which is magnetic pole insensitive is described. The switch includes a Hall effect sensor coupled to a threshold circuit which provides an output signal indicative of the proximity of a magnet, and hence a magnetic field, to the Hall effect senso... | 09/16/2003 |
| 6617846 | Method and system for isolated coupling A method for isolatively coupling an input signal to an output signal, where the input signal is a first voltage differential, comprises three steps. Step one calls for generating a magnetic field that is indicative of the input signal in at least one mag... | 09/09/2003 |
| 6570380 | Non-linear hall IC A non-linear Hall IC that stores conversion information for converting Hall voltage output from a Hall element, and converts the Hall voltage into an output voltage based on the conversion information stored. The Hall voltage is converted into the output ... | 05/27/2003 |
| 6509734 | Magnetic rotational position sensor A magnetic rotational position sensor senses each rotational position of a control shaft about a first rotational axis over a definable range of rotation of the control shaft. The magnetic rotational position sensor includes a magnetic circuit, a magnetic... | 01/21/2003 |
| 6476602 | Temperature compensated hall sensor for testing magnetic recording heads A head testing apparatus is provided for testing a magnetic data recording head. The apparatus includes a test volume adapted to receive the magnetic data recording head and a magnetic field source positioned to generate a magnetic field within the test v... | 11/05/2002 |
| 6448768 | Magnetic sensor with a signal processing circuit A magnetic sensor with a signal processing circuit includes a magnetic sensor section 4 composed of a compound semiconductor thin film or a magnetic thin film, and a signal processing circuit 5 for amplifying a magnetic signal the magnetic sensor section ... | 09/10/2002 |
| 6433544 | Magnetic field sensor with ladder-type filter Described is a magnetic field sensor with a Hall element and a rectangular change-over switch, which controls the Hall element, dependent upon a timing signal. An active ladder-type filter creates a low pass filtered outlet signal. It uses OTA modules, wh... | 08/13/2002 |
| 6362618 | Hall sensor for stress and temperature measurements in addition to magnetic field measurement A Hall sensor has a Hall plate having terminals for supplying a supply current and for tapping a Hall voltage. A Hall circuit connects the terminals. A device for orthogonally switching the supply current and the Hall voltage between a first set of the te... | 03/26/2002 |
| 6356741 | Magnetic pole insensitive switch circuit A switch which is magnetic pole insensitive is described. The switch includes a Hall effect sensor coupled to a threshold circuit which provides an output signal indicative of the proximity of a magnet, and hence a magnetic field, to the Hall effect senso... | 03/12/2002 |
| 6329817 | Electronic sensor apparatus A sensor for measuring a parameter includes at least one transducer adapted to provide an analog transducer signal, and at least one converter adapted to convert the analog transducer signal into a digitized transducer signal, and a memory device associat... | 12/11/2001 |
| 6278271 | Three dimensional magnetic field sensor A magnetic field sensor for measurement of the three components (Bx, By, Bz) of a magnetic field comprises a Hall-effect element (1) and an electronic circuit (22). The Hall-effect element (1) comprises an active area (18)... | 08/21/2001 |
| 6252389 | Current detector having magnetic core for concentrating a magnetic flux near a hall-effect sensor, and power switch apparatus incorporating same A current detector includes a Hall-effect device 18 for detecting a magnetic field generated by a current flowing across a conducting portion; a magnetic core 19 having a first end face for concentrating a magnetic flux and a second end face having a smal... | 06/26/2001 |
| 6236254 | Low voltage amplification circuit with bias compensation A circuit (10) operates at relatively low values of the supply voltage, and includes a differential input circuit (16) which receives a differential input signal at first and second terminals (18, 21). A differential voltage derived by the input circuit f... | 05/22/2001 |
| 6232768 | Centering a signal within the dynamic range of a peak detecting proximity detector A magnetic-field-to-voltage transducer includes a Hall element and a digitally gain-controlled Hall-voltage amplifier that produces an analog voltage Vsig having excursions of one polarity corresponding to the passing of magnetic articles. Vsig is applied... | 05/15/2001 |
| 6204657 | Temperature compensated closed-loop hall effect current transformer A closed loop Hall effect current transformer in which the Hall effect device has an input resistance which varies with its operating temperature. The Hall effect device is driven by a fixed voltage passing through a current limiting a resistor with varia... | 03/20/2001 |
| 6154027 | Monolithic magnetic sensor having externally adjustable temperature compensation The current flow from a temperature-variable current source to a Hall-effect element is adjusted according to sensed temperature conditions of the element to compensate for temperature-dependent changes in the magnetic-field sensitivity of the Hall-effect... | 11/28/2000 |
| 6100680 | Detecting the passing of magnetic articles using a transducer-signal detector having a switchable dual-mode threshold A magnetic-field-to-voltage transducer includes a Hall element and a digitally gain-controlled Hall-voltage amplifier that produces an analog signal voltage Vsig having excursions of one polarity corresponding to the passing of magnetic articles. The gain... | 08/08/2000 |
| 6091239 | Detection of passing magnetic articles with a peak referenced threshold detector A detector for detecting passing magnetic articles including a magnetic-field-to-voltage transducer having an output at which an analog voltage Vsig is generated, with the Vsig voltage being commensurate to the strength of the ambient magnetic field and h... | 07/18/2000 |
| 6064202 | Spinning current method of reducing the offset voltage of a hall device The method serves for dynamically compensating the offset voltage of a Hall device. The Hall device can have either a platelike structure with at least two contact pairs, or any other arrangement deriveable by conformal mapping. The contact pairs are angl... | 05/16/2000 |
| 6064199 | Magnetic field change detection circuitry having threshold establishing circuitry Apparatus for detecting a tooth of a body. The tooth has an edge terminating in a notch. The tooth and notch are disposed along an edge of the body. The apparatus includes a pair of Hall effect cells disposed adjacent to, and laterally disposed along, the... | 05/16/2000 |
