Hitachi, Ltd.

Olympus Corporation

Hitachi Astemo Ltd.

Hitachi Automotive Systems, Ltd.

Renesas Technology Corp.

Hitachi Solutions, Ltd.

Dream Incorporated

Hiroyuki Ota

Hideo Miura

Makoto Kitano

Toshiyuki Ajima

Yoshishige Endo

Takeshi Harada

Takafumi Hara

Masatoshi Kanamaru

Shigehisa Aoyagi

Naoto Ban

Akihiko Ariga

Atsushi Hosogane

Teruhisa Akashi

Yui Kawanishi

Ryuji Kono

Yoshitaka Sugiyama

Kenichiro Matsubara

Yoshihiko Akagi

Keiro Muro

Atsushi Kazama

Kisho Ashida

Hiroshi Onuki

Masaki Kashima

Jiro Hashizume

Junji Onozuka

Kouji Inoue

Hidefumi Hatsuzawa

Juichi Kishida

Takuya Tanaka

Miho Tobita

Makoto Kawano

Yuuichi Kiyokawa

Masanobu Noriyuki

Hiroi Nakayama

Akira Masu

Ryuuji Nakayama

Munoru Ogushi

An object of the present application invention is to provide a throttle valve control device capable of effectively cooling a bearing of a throttle shaft while preventing an increase in size of a throttle body. Therefore, in a throttle valve control device in which flow pathsTtoTthrough which a heat exchange medium flows are formed in a throttle body, the diameter of a first bearingof a throttle shaftis greater than the diameter of a second bearing, the flow pathsTtoTare disposed along an outer periphery of an intake passageto overlap with the second bearingwhen viewed from a flow direction of the intake passage, and an inlet portionTand the outlet portionTof the flow pathsTtoTare disposed to sandwich the first bearing

Throttle valve control device

Operating unit of treatment tool for endoscope

Disclosed are a motor control device that can accurately estimate a rotor position based on a neutral point potential even when a load increases, and a brake control device that is driven by the motor control device. The motor control deviceincludes a three-phase synchronous motorincluding a three-phase winding, an inverterconnected to the three-phase winding, a control unitfor controlling the inverter based on a rotor position of the three-phase synchronous motor, and a rotational position estimation unitfor estimating a rotor position &#x3b8;d based on a neutral point potential Vn of the three-phase winding. The rotational position estimation unit estimates a rotor position selectively using one or more of a plurality of detected values of the neutral point potential according to a pre-estimated value of the rotor position and a voltage application state to the three-phase winding.

Motor control device and brake control device

Provides are a control device for a three-phase synchronous motor in which a position detection accuracy of a rotor can be improved when one three-phase synchronous motor is driven by a plurality of inverters, and an electric power steering device using the same. A control device for a three-phase synchronous motor includes: a three-phase synchronous motor including a first three-phase winding and a second three-phase winding; a first inverter connected to the first three-phase winding; a second inverter connected to the second three-phase winding; a first control device that controls the first inverter on the basis of a rotor position of the three-phase synchronous motor; and a second control device that controls the second inverter on the basis of the rotor position of the three-phase synchronous motor. The first control device estimates the rotor position on a basis of a neutral point potential of the first three-phase winding and a neutral point potential of the second three-phase winding.

Control device for three-phase synchronous motor and electric power steering device using the same

Handle for surgical device

The disclosure of the present specification aims to provide a directivity control system for speakers, which is capable of easily controlling directivity of acoustic data to provide desired sound fields with a plurality of speakers, and freely producing sound fields with high accuracy. A plurality of physically connected speaker units are virtually arrayed at respective directivity angles according to control signals that define the directivity angles. Virtual delay time data is calculated for the case where data is outputted with the virtual array, and output is performed according to output data affected by the delay time data, so that desired sound fields can be formed with the speaker units remaining fixed, without the necessity of mechanically rotating the speaker units.

Directivity control system

To provide a system for simplifying setting of access control for a file system and a firewall, it is provided an access control system, which is formed by a computer including a processor configured to execute a process, and a memory configured to store a program for executing the process, the access control system comprising: a launcher, which is a process configured to activate the process; an ACL file in which specifics for controlling an I/O request issued by the process are defined; a process search module configured to trace a parent of the process to determine whether or not the process is an activated process that has originated from the launcher; and an access control module configured to control an I/O request issued by the activated process that has originated from the launcher in accordance with the specifics defined in the ACL file.

Access control system and access control method

Provided are a power steering device and a control device for a power steering device, which are capable of reducing power consumption. The power steering device includes a current detection number setting circuit configured to set the number of times of detection of a DC bus current value by a current detecting circuit to a first predetermined number over a first predetermined cycle of a PWM period when the steering-state signal indicative of a steering operation state is received, and to set the number of times of detection so that the number of times of detection becomes smaller than the first predetermined number over the first predetermined cycle of the PWM period when a steering-state signal indicative of a non-steered state is received.

Power steering device and control device for power steering device

An object of the present invention is to realize a pressure sensor with a small variation in sensor characteristics. The pressure sensor includes a diaphragm having longitudinal and lateral sides, and four strain gauges disposed on the diaphragm. The four strain gauges are arranged at a center of the diaphragm. Two of the four strain gauges are arranged along a lateral direction, and other two strain gauges are arranged along a longitudinal direction.

Pressure sensor having strain gauges disposed on a diaphragm

In a mechanical quantity measuring device () having a sensor chip () which outputs a sense output (S) corresponding to a mechanical quantity acting on the object to be measured (), and a flexible wiring board () which supports the sensor chip () and has a wire () to lead out the sense output (S) to outside, and in which in measuring the mechanical quantity, the sensor chip () and the flexible wiring board () are attached to the object to be measured (), a cutout () is provided on the flexible wiring board () near the sensor chip () and on the side where the wire () is arranged for the sensor chip (). Thus, change in the sense output (S) with time can be restrained.

Mechanical quantity measuring device

The object of the invention is to facilitate the entry of a sensor node and the adoption of a protocol in the existing sensor network system effectively utilizing limited resources of radiocommunication. To achieve the object, the following are provided. A sensor node has a radiocommunication unit that transmits a measured value sensed by a sensor and an identifier of a sensor node as binary measured data. A base station has a radiocommunication controller that receives the measured data from the sensor node, a wire communication controller that transmits the received measured data to a server, a conversion definition information selector that selects conversion definition information corresponding to the identifier included in the measured data out of preset plural conversion definition information and a conversion engine that converts the binary measured data to measured data in a text format based upon the selected conversion definition information.

Sensor network system, base station, and method to forward measured data

In an electric characteristic testing process corresponding to a process of the semiconductor apparatus manufacturing processes, in order to test a large area of the electrode pad of the body to be tested in a lump, an electric characteristic testing is performed by pressing a testing structure provided with electrically independent projections having a number equal to a number of conductor portions to be tested formed on an area to be tested of a body to be tested to the body to be tested.

Method of manufacturing semiconductor apparatus

Process for manufacturing semiconductor device

A laminated wiring conductor layer of a thermal printing head consists of common wiring connected to one end of a patterned heating resistor layer, and individual wirings connected to the other end of the patterned heating resistor layer. The individual wirings are separated from the common wiring by a predetermined interval. The laminated wiring conductor layer includes a plurality of conductor layers in which a first conductor layer exhibits excellent bonding to the heating resistor layer and cannot be readily soldered and hence prevents flow of a solder while a second conductor layer laminated on the first layer is easily soldered and less corrosive than aluminum.

Apparatus for thermal printing

Growing community of inventors

Tokyo, Japan

Hiroyuki Ota