Hitachi, Ltd.

Hitachi Video Eng. Inc.

Satoshi Sugawara

Satoshi Shimizu

Hiroshi Yamamoto

Junichi Yamashita

Yuichiro Yoshimoto

Yasuaki Kinoshita

Takashi Fukumoto

Hideo Soneda

Katsutoshi Shinbo

Shozo Saito

Takao Igarashi

Zenichiro Endo

At least one antenna is supported on a fixed supporting portion by an oscillating mechanism having rotational degrees of freedom on a X-Y plane, and a drive mechanism such as a drive motor is arranged in the vicinity of the oscillating center axis whereby the elevation angle and the azimuth angle of the antenna can be controlled.

Antenna drive device and artificial satellite tracking system using the same

When a spatial distribution of a physical quantity to be displayed is given, a value range showing the three-dimensionally distributed physical quantity is divided into a plurality of small value ranges to obtain the distribution of the spatial positions where the physical quantity has the value equal to that in the small value range for every small value range to display the physical quantity, and to repeat the operation by successively changing the small value range.

Method and apparatus for displaying three dimensional physical quantity

A control rod has blades each of which includes a neutron absorption region in which neutron absorbers each loaded to the core of a reactor from below and made of absorption nuclear chain type neutron absorber are disposed. The neutron absorption region is divided into two, upper and lower, regions in an axial direction; the boundary between the upper and lower regions is positioned within the range of from 3/8 to 5/8 of the full length of the neutron absorption region in the axial direction from the lower end of the neutron absorption region; and the quantity of the absorption nuclear chain type neutron absorber contained in the lower region in the section perpendicular to the axial direction is smaller than the quantity of the absorption nuclear chain type neutron absorber contained in the upper region in the section perpendicular to the axial direction.

Control rod

A magnetostatic wave tunable resonator which has fine stripe electrodes and bonding electrode films formed on the surface of a YIG thin film supported by a GGG substrate. The stripe electrodes, bonding electrode films and edges of the YIG film are formed by a chemical etching method based on photolithography. The resonator so formed has suppressed spurious resonance of high order modes and enables the use of a magnet of greatly reduced size.

Magnetostatic wave tunable resonator

Growing community of inventors

Hitachi, Japan

Satoshi Sugawara