Nec Corporation

Japan Aviation Electronics Industry, Limited

Nec Compound Semiconductor Devices, Ltd.

Kabushiki Kaisha Toshiba

Hidehiko Kuroda

Satoshi Okada

Makoto Takemura

Masahiro Kubo

Masahiro Yoshida

Takao Yamazaki

Masayoshi Yoneda

Shigeru Kobayashi

Yoshihiro Yamashita

Satoshi Yamamoto

Sakae Kitajo

Ichiro Hazeyama

Hirobumi Inoue

Yuuri Nakamura

Satoshi Segawa

Kazuhiko Aoki

Osamu Kawakami

Atsushi Kashitani

Katsuhiko Sato

Mikio Izumi

Hiromasa Tanaka

Yoshimichi Sogawa

Hideyuki Noguchi

Kazuyuki Egashira

Takahiko Tsujisawa

Takahiro Miura

Yukio Yoshimura

Makoto Ochiai

Isamu Kumihashi

Etsuo Matsumoto

Itaru Chida

A wireless connector includes: a first unit attached detachably from the outside of a first object; and a second unit attached detachably from the outside of a second object. The first unit includes a first housing to which a first transmission/reception part and a first connector part are secured, the first connector part being attached to the first object and transmitting a to-be-transmitted target between the first connector part and the first object. The second unit includes a second housing to which a second transmission/reception part and a second connector part are secured, the second connector part being attached to the second object and transmitting a to-be-transmitted target between the second connector part and the second object. The first transmission/reception part and the second transmission/reception part are arranged so as to be separated from each other and opposed to each other to wirelessly transmit the to-be-transmitted target.

Robot device and wireless connector

A wireless connector for wirelessly transmitting a to-be-transmitted target that is electric power and/or information, has a first unit and a second unit removably attached from the outside of a first object and a second object, respectively. The first unit includes a first transmission/reception part for wirelessly transmitting the to-be-transmitted target; and a first housing to which a first connector part for transmitting the to-be-transmitted target to/from the first object by being attached to the first object is fixed. The second unit includes a second transmission/reception part for wirelessly transmitting the to-be-transmitted target to/from the first transmission/reception part; and a second housing to which a second connector part for transmitting the to-be-transmitted target to/from the second object by being attached to the second object is fixed. The first and the second transmission/reception parts are spaced apart from and faced to each other so as to wirelessly transmit the to-be-transmitted target.

Wireless connector attachment/detachment method, robot device, and wireless connector

A first disclosure is a coil member wherein a lead wire is wound in oval shape, with an oval-shaped cross section being curved along a major-axis direction of the oval-shaped cross section and having a curvature axis in a direction parallel to a minor-axis direction of the oval-shaped cross section. A second disclosure is a contactless-type power transmission device provided with: a coil member as a first coil; a second coil; and a tilting shaft that makes variable, using the curvature axis as a rotating axis, an inclination between a central axis of the first coil, which is a rotational symmetry axis of the first coil, and a central axis of the second coil.

Coil member, contactless-type power transmission device, electromagnetic wave irradiation/reception device, power transmission/information communication device, and autonomous mobile robot system

It is an object of the present invention to drive a mirror in a wide driving range and at a fast response speed. An imaging deviceincludes an imaging element, a mirror, a lens, and a mirror tilt actuator. The imaging elementimages subject light that is reflected light from a subject. The mirrorreflects the subject light, and makes the subject light incident on the imaging element. The lenscollects the subject light on the mirror. The mirror tilt actuatordrives the mirrorso as to change an optical axis of the lens OAL. The optical axis of the lens OAL is an optical axis to be incident on the central part C of the imaging elementin the subject light exited from the lens

Imaging device including a control unit configured to counteract vibration

A semiconductor device is provided including a semiconductor element having a circuit and at least one electrode of the circuit, a flexible substrate having at least one electrode pad and surrounding the semiconductor element, a conductor for connecting the electrode with the electrode pad, and a plurality of solder bumps on the electrode pad, wherein at least a first portion between a surface facing the solder bumps of the semiconductor element and the flexible substrate is not fixed by adhesion.

Semiconductor device and method for manufacturing the same, circuit board, electronic apparatus, and semiconductor device manufacturing apparatus

The variable gain amplifier includes a parallel connection of resistance R and capacitor C Resistance R may be replaced by inductance L, and bipolar transistors may be replaced by other types such MOS transistors. Resistance R gives a current feedback for transistor Q thereby lowering the mutual conductance &ldquo;gm&rdquo; of transistor Q and limiting the current flowing from voltage supply V The emitter area ratio (the emitter area of transistor Q the emitter area of Q ) made to be 1: n where &ldquo;n&rdquo; is greater than or equal to 1, thereby controlling each current. Capacitor C is connected in parallel with R connected with the base of transistor Q is a bypass capacitor for lowering the impedance of the base of transistor Q in higher frequency range. Capacitor C is a peaking capacitor, because it improves the high frequency characteristics.

Variable gain amplifier

The present invention provides a charge pump circuit capable of operating at a high speed with a low power source voltage and increasing the synchronization processing speed. The charge pump circuit comprises: a first switch circuit connected between a first input node through which a first signal CPin is input and a base of an NPN transistor Q for controlling the NPN transistor Q in response to the first signal CPin and a second switch circuit connected between a second input node and a base of an NPN transistor Q for controlling the NPN transistor Q in response to a second signal CPin The transistors Q and Q and transistors contained in the first and the second switch circuits and are all NPN transistors.

Charge pump circuit

A variable gain amplifying apparatus which can accurately set a predetermined gain for amplifying. The variable gain amplifying apparatus has a first amplifying circuit, a second amplifying circuit and a third amplifying circuit. The first amplifying circuit can control a first gain during an operation. The second amplifying circuit is coupled to an output of the first amplifying circuit, in which a gain is fixed during an operation. The third amplifying circuit coupled to an output of the second amplifying circuit, in which a gain can be controlled during an operation. The apparatus can avoid deterioration in a distortion characteristic, an increase in a total noise figure and an increase in a consumptive electric power.

Variable gain amplifying apparatus which can change a gain during an operation

A current mirror circuit for outputting an output current in proportion to an input current, comprises a first transistor having a collector through which the input current flows, a second transistor having a base connected to a base of the first transistor and a collector through which the output current flows, a third transistor having a base connected to a collector of the first transistor, and an emitter through which a predetermined current flows, and a fourth transistor having a base connected to an emitter of the third transistor, and an emitter connected to the base of the first and second transistors. A variable current source is connected between an emitter of the third transistor and ground to cause the predetermined current to flow through the third transistor. The value of the predetermined current is variable. An input current detecting circuit is provided to detect the input current for controlling the variable current source so as to maintain the predetermined current in proportion to the input current.

Current mirror circuit with minimized input to output current error

For testing a frequency divider, oscillations are produced and wave-shaped into a series of dock pulses. The dock pulses are supplied to a frequency divider under test. A window pulse of duration equal to one cycle of the output pulses of the frequency divider is used to sample the clock pulses. The sampled clock pulses are counted and compared with a reference value. Depending on the number of the sampled clock pulses relative to the reference value, an output voltage at one of two discrete values is produced to indicate the result of the test.

Frequency divider testing circuit clock-sampling window variable with

A reference voltage generating circuit includes a constant current circuit, a current mirror circuit, and a load resistor. The constant current circuit generates a constant current proportional to a thermal electromotive force. The current mirror circuit uses the constant current generated by the constant current circuit as a reference current. The load resistor converts the output current of the current mirror circuit into a voltage. The current mirror circuit is constituted by a first transistor having a collector connected to the constant current circuit, a first resistor having one terminal connected to the emitter of the first transistor, a second transistor having a base connected to the base of the first transistor and a collector connected to the load resistor, a second resistor having one terminal connected to the emitter of the second transistor, a third transistor having a base connected to the collector of the first transistor and an emitter connected to the bases of the first and second transistors, and a third resistor connecting the base and emitter of the first transistor.

Reference voltage generating circuit

Disclosed is an image scanner, which has: a reflecting mirror for reflecting a light reflected from a scanned manuscript in a predetermined direction; a sub-scanning means for sequential sub-scanning which parallel moves on a plane which has an acute angle to the surface of the scanned manuscript while keeping the reflecting surface of the reflecting mirror perpendicular to the surface of the scanned manuscript; a focusing lens which focuses the light reflected from the scanned manuscript which is reflected by the reflecting mirror; and an one-dimensional image sensor which outputs a manuscript image by conducting a photoelectric conversion of the light reflected by the reflecting mirror which is focused on a light-receiving surface of the one-dimensional image sensor by the focusing lens.

Growing community of inventors

Tokyo, Japan

Hidehiko Kuroda