Hitachi, Ltd.

Daisuke Matsuka

Toshihiro Arisaka

Naoki Wada

Hiroshi Fukuda

Kouichirou Kinoshita

Morihiro Waizumi

Masahiro Mimura

Takashi Saegusa

A technology is provided in which moving objects positioned at a different place and having more than the number of the cameras are displayed on a display device. The present invention is directed to a moving object imaging device including a camera, a deflection unit, a controller configured to control the camera and the deflection unit, an imaging processing part, and an imaging display part, thereby imaging the moving object in a sequentially repeating manner and creating moving image data based upon images acquired by the image processing part to display the created moving image data on the image display part.

Moving object imaging device and moving object imaging method

A damping device and a design method provide an active damping for a device in which vibration is to be reduced. The damping device includes vibration detection means for detecting a vibration of the object; vibration generation means for generating a distortion on a portion of the object; control means for controlling the vibration generation means by a signal from the vibration detection means; and signal input and output means for transferring a signal with the control means. A driving force generation signal is received from outside through the signal input and output means, the driving force corresponding to the driving force generation signal is generated by the control means, the selected vibration generation means is driven by the driving force, and vibration state information obtained from the selected vibration detection means is output from the control means to the outside through the signal input and output means.

Active damping device and design method

In a storage device provided with a plurality of recording devices, the vibrations which propagate to the recording devices through a board can be reduced with a small number of parts. A storage device equipped with a plurality of recording devices having: a canister equipped with the recording device; a board equipped with a circuit that transmits a signal to the recording device or processes a signal; a chassis equipped with the board and the canister; a plate-like piezoelectric element attached to part of the board; a vibration detection sensor attached to part of the board; and a control unit that controls a drive signal given to the piezoelectric element in accordance with a sensor output of the vibration detection sensor is proposed.

Storage device

A storage device having a plurality of recording devices in which a decrease in vibrations from the recording devices can be achieved with a small number of parts. A storage device having a plurality of recording devices mounted therein includes a handle for inserting and withdrawing the recording device into and out of the storage device. Two holding members each include a mounting portion where the recording device is mounted and a frame extending from the mounting portion to the handle. Two protrusions are formed to extend inwardly of a region surrounded by the recording device, the handle, and the two frames. A restriction plate is disposed so as to overlap the respective surfaces of the two protrusions; and a viscoelastic body is disposed at the overlapping portion for joining the two protrusions and the restriction plate to one another.

To reduce vibration in the rotation direction acting on the hard disk drive with a part of the hard disk drive as the rotation center. The disk unit comprises a hard disk drive comprising a drive mechanism which rotates and drives a plurality of disk media, an arm rotatably supported on a pivot and placed as movable in the rotation area of the disk media, and an actuator which performs positioning control of the magnetic head fixed to the arm to a target position on the disk media, a frame supporting the hard disk drive, and a dynamic absorber placed in the hard disk drive or in the frame, wherein the dynamic absorber absorbs vibration in the rotation direction acting on the hard disk drive with a part of the hard disk drive as the rotation center.

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Yokohama, Japan

Daisuke Matsuka