Abstract: A physical quantity data correcting device accurately and rapidly makes corrections of physical quantity data by appropriately controlling an approximate ellipsoid computing unit and/or a correction coefficient computing unit on the basis of a control parameter group. A physical quantity data acquiring unit acquires physical quantity data output from a physical quantity detecting unit that detects physical quantities. A data selecting unit selects the acquired physical quantity data. An approximate ellipsoid computing unit computes an approximate expression of an n-dimensional ellipsoid indicating a distribution shape obtained by distributing the selected physical quantity data in an n-axis coordinate space. A correction coefficient computing unit computes correction coefficients for correcting the computed n-dimensional ellipsoid to an n-dimensional sphere.

Abstract: A Hall resistance measurement unit measures a Hall resistance value in two or more current directions between a plurality of terminals of the Hall element. A Hall electromotive force measurement unit measures the Hall electromotive force of the Hall element. A temperature measurement unit measures an operating temperature of the Hall element. A compensation signal generation unit compensates the Hall electromotive force on the basis of the Hall resistance value from the Hall resistance measurement unit and a temperature output value from the temperature measurement unit. A compensation coefficient calculation circuit calculates a compensation coefficient on the basis of the Hall resistance value measured by the Hall resistance measurement unit and the temperature output value measured by the temperature measurement unit. The compensation coefficient includes a mechanical stress compensation coefficient and a temperature compensation coefficient.

Abstract: The present invention relates to an output-current detection IC chip for diode sensors and a diode sensor device, which reduce the influence by a leak current of a protection circuit. The present invention is equipped with a sensor unit in which anodes of N (N being an integer of 2 or more) diode sensors are connected to each other, a common terminal connected to a connection portion where the anodes are connected to each other, N input terminals connected to cathodes of the diode sensors, N+1 protection circuits connected to the input terminals and the common terminal, an I-V conversion circuit which converts an output current of each diode sensor into a voltage, a chopper circuit which switches the polarity of the output current and inputs the same to the I-V conversion circuit, and a dummy protection circuit connected to the input of the I-V conversion circuit.

Abstract: The present invention relates to a sensor device which has high S/N and excellent temperature characteristics. A sensor device has a semiconductor substrate, a first metal wiring layer provided on the semiconductor substrate, a first insulating layer provided on the first metal wiring layer, a compound semiconductor sensor element provided on the first insulating layer, a second metal wiring layer provided on the compound semiconductor sensor element and the first insulating layer, and a second insulating layer provided on the second metal wiring layer. A third insulating layer is provided between the first metal wiring layer and the second metal wiring layer, and the compound semiconductor sensor element is provided in the third insulating layer.

Abstract: The transmitter includes a phase shifter that shifts a phase of an input signal and outputs a shifted signal; a first control circuit changes a phase shift amount of the phase shifter; a phase difference signal output circuit outputs a phase difference signal between the shifted signal and the reference signal; an extreme value output circuit outputs a value of the phase difference signal when the phase difference signal becomes the extreme value; a target value output circuit outputs a target value based on an output from the extreme value output circuit; and a second control circuit controls the phase shift amount of the phase shifter such that a value of the phase difference signal coincides with the target value. The phase shifter outputs, as a transmission wave, the input signal the phase of which is shifted by the phase shift amount controlled by the second control circuit.

Abstract: A power supply circuit is intended to suppress power consumption when a load is not driven and to shorten a required time to be taken until a boosted voltage to be supplied to a high-side MOS transistor is stabilized when the load is changed from a deactivated state to an activated state. The power supply circuit (power supply circuit 3) supplying power to a load driving circuit (motor driving circuit 2) that drives a load by controlling a high-side MOS transistor M1 on the basis of an input load control signal includes a booster circuit (charge pump 23) configured to boost a voltage of input power and supplies the power of which the voltage is boosted as power for driving the high-side MOS transistor. The booster circuit has power supply capability which varies depending on the load control signal.

Abstract: An object is to output output signal amplitude exceeding power supply voltage or output signal amplitude falling below ground voltage without requiring a charge pump circuit or the like to generate positive or negative power supply voltage for an operational amplifier. The present invention provides a signal output circuit comprising an operational amplifier including: an amplification stage configured to amplify differential input voltage; and an output stage configured to amplify an input signal amplified by the amplification stage and output the input signal as an output signal, wherein the output stage is a switched capacitor circuit which includes switches and a capacitor configured to sample differential voltage between input voltage outputted from the amplification stage and voltage other than the input voltage and which transfers the differential voltage sampled by the capacitor by switching of the switches based on the input voltage.

Abstract: A physical quantity measuring apparatus of the present invention measures a physical quantity from a signal based on a physical quantity output by a physical quantity signal output apparatus. A correction signal output unit outputs a new correction signal based on a signal on the basis of a physical quantity obtained at a given measurement time, a correction signal obtained before that measurement time, and a filter coefficient. A large/small relationship determining unit determines a large/small relationship between the signal on the basis of the physical quantity and the correction signal obtained before that measurement time. A first filter coefficient output unit outputs a first filter coefficient based on the plural large/small relationships.

Abstract: A Hall electromotive force signal detection circuit suppresses variations of spike-like error signals that become obstacles to high-precision detection of Hall electromotive force signals. To this end, in the Hall electromotive force signal detection circuit driving plural Hall elements by spinning current techniques and using plural transconductance amplifiers, a reference signal Vcom is supplied from a feedback network controller to a Hall signal feedback network that performs a feedback control so that common voltages of Hall electromotive force signals from the plural Hall elements match with the reference signal Vcom and to an output signal feedback network that feeds back a voltage obtained by dividing a difference between an output voltage and the reference signal Vcom. In this manner, the variations of spike signals are suppressed.

Abstract: A current sensor includes: a conductor through which a current to be measured flows; magnetoelectric conversion elements disposed near the conductor; and an isolating member for supporting the magnetoelectric conversion elements, and the conductor is disposed so as not to contact with the isolating member and not to support the isolating member.

Abstract: A voltage detector for detecting whether an input voltage is no lower than a predetermined threshold voltage, includes a reference voltage generator configured to generate a reference voltage, and a comparator configured to receive the input voltage and the reference voltage and to detect whether the input voltage is no lower than the threshold voltage that is determined by the reference voltage. Here, the reference voltage generator includes a first write MOS transistor, a second write MOS transistor, a first output MOS transistor and a second output MOS transistor each including a control gate and a floating gate.

Abstract: An infrared-sensor filter member includes an optical filter disposed in an opening portion of a second member and a first member. The infrared-sensor filter member includes a recess portion formed from a light-incident surface of the optical filter and the first member. At least a part of a bottom surface of the recess portion is formed by the light-incident surface and side walls of the recess portion, which are formed by the first member.

Abstract: A rotation angle measurement apparatus includes: a first Hall element pair for detecting a magnetic component in a first direction; a second Hall element pair for detecting a magnetic component in a second direction different from the first direction; a third Hall element pair for detecting a magnetic component in a third direction different from the first direction and the second direction; and a fourth Hall element pair for detecting a magnetic component in a fourth direction different from the first to third directions. An angle calculation unit calculates a first rotation angle ? of a rotating magnet based upon the strengths of the output signals from the first Hall element pair and the second Hall element pair, and calculates a second rotation angle ?c of the rotating magnet based upon the strengths of the output signals from the third Hall element pair and the fourth Hall element pair.

Abstract: The present disclosure relates to controllers of linear motion devices and control methods of the same, in particular, to a controller of a linear motion device and a control method of the same capable of controlling the position of the linear motion device accurately, in a case where a misalignment of the mounting position of a magnetic sensor or a magnetizing variation of a magnet occurs, or in a case where a magnetic field detected by the magnetic sensor receives an interference of the magnetic field generated by a driving coil of the linear motion device.

Abstract: A semiconductor device (1) includes a first metal wiring layer (11) formed on a substrate (10), an interlayer insulating film (12) formed on the first metal wiring layer (11), a second metal wiring layer (23) formed on the interlayer insulating film (12), a first resistor including a first resistance metal film (14a) formed between the first metal wiring layer (11) and the second metal wiring layer (23), a first insulating film (15a) formed on the first resistance metal film (14a), and a second resistance metal film (16a) formed on the first insulating film (15a), and a second resistor including a first resistance metal film (14b) formed between the first metal wiring layer (11) and the second metal wiring layer (23), a first insulating film (15b) formed on the first resistance metal film (14b), and a second resistance metal film (16b) formed on the first insulating film (15b).

Abstract: The present invention relates to a magnetic sensor and a magnetic detecting method. A first arrangement pattern includes: a first magnetic detection unit (201) including a magnetic sensitivity material (201a) and a magnetic convergence material (201b) having a length different from a length of the magnetic sensitivity unit on a substrate, and being arranged to be parallel to the substrate and arranged horizontally so that a median line (Ma) passing through a midpoint of the magnetic sensitivity material in a longitudinal direction and a median line (Mb) of the magnetic convergence material in the longitudinal direction do not cross with each other; a second magnetic detection unit (202) having the structure same as the structure of the first magnetic detection unit; and a connecting unit electrically connecting the magnetic sensitivity material of the first magnetic detection unit in series with a magnetic sensitivity material of the second magnetic detection unit.

Abstract: The present invention provides a magnetic field measuring device comprising first to fourth magnetoelectric transducers, magnetic convergence plates, and a calculation unit that calculates the strength of a magnetic field applied in a horizontal direction and/or a vertical direction with respect to a magneto-sensing surface of the magnetoelectric transducers, wherein the magnetic convergence plates are placed in the vicinity of the first to fourth magnetoelectric transducers so as to convert magnetic field vectors, and the calculation unit includes a first calculation block that adds or subtracts output from the first to fourth magnetoelectric transducers, and outputs a calculation result.

Abstract: A filter member includes a first lead terminal, an optical filter, and a first mold member, and a light incidence surface and a light emission surface of the optical filter is exposed from the first mold member. A sensor member includes an IR sensor element, a second lead terminal and a second mold member. A light-receiving surface of the IR sensor element is exposed from the second mole member. The filter member is disposed on the sensor member so that the light emission surface of the optical filter faces the light-receiving surface of the IR sensor element in the sensor member.

Abstract: A motor drive apparatus that controls a current flowing through a coil of a motor, including a comparing section that compares the current flowing through the coil to a control current input thereto; an operation selecting section that selects an operational state according to a comparison result of the comparing section; a driving section that receives a designation signal designating a current mode and a stop mode, drives the coil in the operational state selected by the operation selecting section when the designation signal designating the conductive mode is received, and drives the coil in the braking state when the designation signal designating the stop mode is received; and a setting section that controls a start of the designation signal designating the stop mode or a start of a period during which the control current is zero.

Abstract: A rotation angle measurement apparatus includes: a first Hall element pair for detecting a magnetic component in a first direction; a second Hall element pair for detecting a magnetic component in a second direction different from the first direction; a third Hall element pair for detecting a magnetic component in a third direction different from the first direction and the second direction; and a fourth Hall element pair for detecting a magnetic component in a fourth direction different from the first to third directions. An angle calculation unit calculates a first rotation angle ? of a rotating magnet based upon the strengths of the output signals from the first Hall element pair and the second Hall element pair, and calculates a second rotation angle ?c of the rotating magnet based upon the strengths of the output signals from the third Hall element pair and the fourth Hall element pair.