Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Matsushita Electrical Industrial Co., Ltd.

Kenichi Nakano

Kazumi Ishimoto

Masahiro Taniguchi

Toshinori Mimura

Youichi Nakamura

Kurayasu Hamasaki

Kazuhiko Ikeda

Kimihito Kuwabara

Manabu Ando

Masahiko Nakamura

Hajime Yamamoto

Yuji Takashima

Masatoshi Takeda

Yukimasa Kuramoto

Taro Ura

Keiichi Zenmyo

Yutaka Murakami

Hiroshi Yamamoto

Tetsuya Nishio

Junya Aso

Kenji Sakanashi

Kouta Okada

Kazuhiro Yamauchi

Takayoshi Murahashi

Tetsuya Matsuoka

Hirohiko Owaki

Tomotaka Muta

An advantage of the present invention is that it provides an optical pickup device including a first condensing member that condenses light from a first light source; a second condensing member that condenses light from a second light source; a holder that has the first and second condensing members attached thereto; a plurality of tracking coils that drive the holder in a tracking direction of an optical disk; and a plurality of focus coils that drive the holder in a focus direction of an optical disk. The plurality of focus coils are disposed in the holder such that virtual center axes for winding coil are set to be substantially perpendicular to the optical axes of the first and second condensing members, and are disposed in four direction such that the region in which the first and second condensing members are attached is surrounded in a rectangular shape. The tracking coils are disposed in the holder such that virtual center axes for winding coil are set to be substantially perpendicular to the optical axes of the first and second condensing members, and are disposed between the first and second condensing members in a tangential direction.

Optical pickup device and optical disk drive

The present invention relates to a device which is to be utilized at the time of observation of a mixed state or a chemically-combined state of a mixture attained by mixing together trace amounts of gases or trace amounts of liquids or mixing a trace amount of a gas with a trace amount of liquid. A micropumpcomprises a pump structural material having a reaction chamber formed therein; a reaction agentwhich is housed in a reaction chamberand produces a gas of predetermined pressure; reaction initiation meanswhich is disposed beside the reaction agent and causes the reaction agent to produce a gas; and a channelwhich is provided in the pump structural material and guides the gas of predetermined pressure produced by the reaction agent from the reaction chamber to an outlet port. The pump structural material and the reaction initiation means are stacked one on top of the other.

Micropump, micropump unit including the micropump, sample processing chip for use with the unit, and sheet connector for use with the unit

A valve unit and a fluid control chip include: a valve chamber having an inlet and an outlet for a fluid; a valve element accommodated in the valve chamber; a piezoelectric element for applying vibrations to the valve chamber; and a driver for driving the piezoelectric element, wherein the piezoelectric element varies the opening by varying a frequency and/or an amplitude of the vibration applied to the valve chamber and by varying the amplitude of the valve element by the varied vibration.

Valve unit and fluid control chip

Disk unit case

In a vehicle navigator using an acceleration sensor for detecting a running distance, the precision of measuring the running distance is intended to be improved. Output data of the acceleration sensor during a predetermined time duration is stored in an output storage, and the average value or 'mean acceleration' of output data is calculated by a mean acceleration calculator A running distance calculator calculates a difference between the acceleration measured with the acceleration sensor and the mean acceleration calculated by the mean acceleration calculator, and this difference is double integrated to obtain the running distance.

Vehicle navigator for calculating distance based on mean acceleration

The present invention relates to a navigation sppratus for finding a vehicle location by calculating on the basis of an output data of an acceleration detecting means for detecting a vehicle acceleration. The navigation apparatus provides at least one acceleration detecting means for detecting a vehicle acceleration and stop judge means for judging a vehicle stopping state from the output variation of the acceleration detecting means.

Navigation apparatus for a vehicle

A vehicle navigator for calculating a running distance of a vehicle from output data of an acceleration sensor, an increase of accumulated errors during the calculation of the vehicle running distance being suppressed. The vehicle navigator has an acceleration sensor for detecting an acceleration of the vehicle; a velocity calculator for calculating a first velocity of the vehicle on the basis of an acceleration detected by the acceleration sensor; a GPS receiver for receiving radio waves from artificial satellites and obtaining a second velocity; a velocity correcting unit for correcting the first velocity by using the second velocity; a running distance calculator for calculating the running distance of the vehicle from the velocity corrected by the velocity correcting unit; and a velocity limiter for setting a velocity limit value range relative to the first velocity if the second velocity cannot be obtained from the GPS receiver, in order to control the first velocity so that it does not exceed the velocity limit value range.

Vehicle navigator

The present invention provides a reflow apparatus and method effective to make constant the internal gas flow direction in a heating section within a reflow furnace. A circulating gas path is formed in a heating unit which collects and causes the gas to flow from a sirocco fan, up the rear side of the heating unit and then down towards a circuit board moving along a transfer path at the front side of the heating unit. Moreover, a plurality of straightening plates are arranged above the transfer path of the heating unit so as to guide the hot gas, which is flowing forwardly downwardly toward the circuit board moving along the transfer path. A blow-down nozzle is provided and includes a plurality of plates aligned in rows in the transferring direction of the circuit boards. The plates have an inverse U-shaped cross section. The blow-down nozzle is arranged below the straightening plates to cause the vertical hot gas flows to flow uniformly over the whole surface of the circuit board.

Reflow apparatus and method

An electrophotographic color image forming method whereby black, yellow, magenta and cyan toner images are superimposed on a photoconductor (54) to transfer to paper, exposure being changed between black and color in a method in which development of black is performed by a contact developing method, and development of color by a direct current electric field projection developing method. Also, in exposure for color, the exposure amount is adjusted between highlight and shadow areas. A full color image of high saturation with good balance between black and color components is reproduced by changing the exposure amount between black and color. It is also possible to obtain a color image with good reproducibility of highlight areas as well as shadow areas.

Electrophotographic image forming method

Growing community of inventors

Fukuoka, Japan

Kenichi Nakano