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Asahi Kasei Microdevices Corporation patents


Recent patent applications related to Asahi Kasei Microdevices Corporation. Asahi Kasei Microdevices Corporation is listed as an Agent/Assignee. Note: Asahi Kasei Microdevices Corporation may have other listings under different names/spellings. We're not affiliated with Asahi Kasei Microdevices Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Asahi Kasei Microdevices Corporation-related inventors


Current sensor

To provide a current sensor with high sensitivity, provided is a current sensor including a sealing portion; a first conductor that includes a bent portion bent in a planar view within the sealing portion and two end portions that are exposed from the sealing portion; a second conductor that includes a bent portion bent in the planar view within the sealing portion and two end portions that are exposed from the sealing portion; a first magnetic sensor that is provided within the sealing portion and arranged inside the first conductor in the planar view; and a second magnetic sensor that is provided within the sealing portion and arranged inside the second conductor in the planar view, wherein one end portion of the first conductor and one end portion of the second conductor are electrically connected.. . ... Asahi Kasei Microdevices Corporation

Hall element and fabrication method of hall sensor

A hall element including a contact is provided. A hall element is provided, including: a substrate; a magnetosensitive portion formed on the substrate; an insulating film formed on the magnetosensitive portion; and a conductive portion which is formed on the insulating film, extends from a peripheral region of the magnetosensitive portion toward a central region of the magnetosensitive portion, penetrates the insulating film, and is electrically connected to the magnetosensitive portion, wherein when observing a cross section passing through a center of the magnetosensitive portion in plan view and a portion at which the conductive portion is in contact with the magnetosensitive portion, at least a part of the conductive portion extends below the insulating film in the cross section.. ... Asahi Kasei Microdevices Corporation

Hall sensor

A hall sensor having a ball portion on a magnetosensitive portion is provided. A hall sensor is provided, including: a substrate; a magnetosensitive portion formed on the substrate; an insulating film formed on the magnetosensitive portion; an electrode portion formed on the insulating film; and a ball portion which is provided on the electrode portion and is electrically connected to the electrode portion, wherein in plan view, a projection area of the ball portion accounts for 10% or more of a projection area of the magnetosensitive portion. ... Asahi Kasei Microdevices Corporation

Light receiving device, light emitting device and light receiving/emitting device

Alight receiving device is equipped with a first light receiving element which outputs a first output signal corresponding to an amount of received light, a temperature information acquisition unit which acquires temperature information of the first light receiving element, a generation unit which generates compensating information of the first output signal, based on first output signals and temperature information when power is supplied to the first light receiving element in a plurality of power supply conditions and stores the same in a storage unit, and a compensation unit which compensates the first output signal, based on the temperature information and the compensating information when the first output signal is output. Thus, even when temperature characteristics of an optical element are varied, the temperature characteristics are compensated highly accurately.. ... Asahi Kasei Microdevices Corporation

Switch apparatus

A switch apparatus is provided, including: a main switch connected between first and second terminals, and electrically connecting or disconnecting the first and second terminals according to gate voltage applied to a gate terminal; a voltage output unit having a voltage divider including a first voltage-division resistance on the first terminal side and a second voltage-division resistance on the second terminal side, and outputting voltage corresponding to voltage of the first terminal and voltage of the second terminal if the main switch is caused to enter a connected state; a buffer outputting voltage following output voltage of the voltage output unit in a connected state of the main switch; and a switch control circuit supplying first voltage corresponding to output voltage of the buffer to the gate terminal, and supplying a second voltage corresponding to output voltage of the buffer to a bulk terminal of the main switch.. . ... Asahi Kasei Microdevices Corporation

Demodulator

A demodulator includes: a demodulation section that outputs a demodulated signal demodulated from a modulated signal; an integration section 60a that integrates the demodulated signal; a zone detection section 60b that detects a replacement target zone in the demodulated signal based on an integrated signal output by the integration section; and a replacement section 60c that replaces a signal of the replacement target zone in the demodulated signal with a replacement target signal. A noise can be removed by integrating the demodulated signal by the integration section, and detecting a replacement target zone in the demodulated signal by the zone detection section based on the integrated signal.. ... Asahi Kasei Microdevices Corporation

Demodulator

A demodulator 100 includes: an ad conversion section 10 that converts a received signal rf in an analogue form to a digital signal; a noise removal section 40 that is connected to a back side of the ad conversion section 10 to detect and remove a noise from an input signal; decimation filters 52 and 54 that are connected to a back side of the noise removal section 40 and reduce a data rate of an input signal; and a demodulation section 60 that is connected to back sides of the decimation filters 52 and 54 and demodulates an input signal. The decimation filters 52 and 54 are connected to the back side of the noise removal section 40, which provides a demodulator less subject to degradation of a signal wave.. ... Asahi Kasei Microdevices Corporation

Sensor device and method for manufacturing same

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. ... Asahi Kasei Microdevices Corporation

Transmitter, transmission method, phase adjustment device, and phase adjustment method

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.. ... Asahi Kasei Microdevices Corporation

Magnetic sensor

A magnetic sensor includes: a magnetic converging plate; hall elements disposed on one surface side of the magnetic converging plate; wires connecting with the hall elements; and a signal processing circuit that connects with these wires to receive a signal from the hall element. Between the hall element and the signal processing circuit, the two wires cross while being spaced apart from each other in a depth direction of a substrate, and forms a compensation loop between a cross of the two wires and the circuit, and in a planar view as seen in a depth direction, at least part of a region occupied by the compensation loop is covered by the magnetic converging plate. ... Asahi Kasei Microdevices Corporation

Oscillation control apparatus and oscillation apparatus

Provided is an oscillation apparatus and an oscillation control apparatus including a first control section that generates a first control signal that controls an oscillation frequency of an oscillator, based on a temperature detection result of a temperature detecting section; an encoder that generates a feedback signal; a second control section that generates a second control signal that controls the oscillation frequency of the oscillator, based on the temperature detection result of the temperature detecting section, an external input signal input from outside, and the feedback signal; an oscillation circuit that sets the oscillation frequency of the oscillator, based on the first control signal and the second control signal; and a reference voltage generating section that generates a reference voltage, wherein the encoder generates the feedback signal by comparing the second control signal and the reference voltage.. . ... Asahi Kasei Microdevices Corporation

Hall electromotive force signal detection circuit and current sensor

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. ... Asahi Kasei Microdevices Corporation

Magnetic sensor apparatus and current sensor apparatus

A sensor apparatus adjusts output timings of a detection signal and a sensing signal for sensing an abnormality in the detection signal. Provided is a magnetic sensor apparatus comprising a magnetic sensor element, an amplifying section that amplifies and outputs an output of the magnetic sensor element, a plurality of comparing sections that compare the output of the magnetic sensor element or an output of the amplifying section to a threshold value, and a plurality of delaying sections that each delay and output a comparison result output by a corresponding comparing section among the plurality of comparing sections. ... Asahi Kasei Microdevices Corporation

Current sensor

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.. . ... Asahi Kasei Microdevices Corporation

02/02/17 / #20170030738

Rotation angle measurement apparatus

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 θ 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 θc of the rotating magnet based upon the strengths of the output signals from the third hall element pair and the fourth hall element pair.. ... Asahi Kasei Microdevices Corporation








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