Fujitsu Corporation

Toshiba Storage Device Corporation

Atsuo Iida

Takaki Shimura

Kenji Kawabe

Nobuyasu Yamaguchi

Hirohide Miwa

Kazuhiro Watanabe

Hiroshi Ishikawa

Fumihiko Nakazawa

Fumihiro Namiki

Satoshi Sano

Keiichi Murakami

Yasuhide Iwamoto

Toru Yokohata

Tetsuya Matsushima

Hajime Hayashi

Takuya Noda

Tadahiko Yanashima

Yasushi Hara

Takahiro Imamura

Hirofumi Nakayasu

Fumitaka Abe

Yoshihiko Kaiju

Yasuo Noguchi

Kazutaka Ogihara

Riichiro Take

Kiyoto Matsui

Keiju Okabayashi

Takeshi Toda

Tohru Fujimaki

Yoshiaki Ikai

Shinji Kanda

Mitsuhiko Ohta

Mitsunori Fukazawa

Arata Ejiri

Masao Hiyane

Shinichi Amemiya

Narutaka Nakao

Toshifumi Tanida

Yuichi Sugiyama

Junji Miyazaki

Kotaro Kameya

Norio Midorikawa

Takai Shimura

The present invention relates to a system capable of carrying out efficient and stable system operation control even if a usage rate of the entire system varies under a situation in which the characteristics of storage units, such as maximum available total capacity and speed performance, are largely different from each other. Therefore, the system according to the present invention is composed of a monitor unit for monitoring information on a total volume of data stored in each of the storage units or in all the storage units, an index value calculating unit for calculating an index value on the basis of the monitor result and a location unit for distributively locating or relocating logical storage areas in physical storage areas on a plurality of storage units on the basis of the calculated index value.

Migrating data in a distributed storage system based on storage capacity utilization

A recording density of a recording medium is set by establishing a predetermined relationship between guaranteed write/erase endurance values and recording density values for the recording medium, and then selecting a required guaranteed write/erase endurance. A recording density value corresponding to the required guaranteed write/erase endurance is determined from the predetermined relationship, and the recording density of the recording medium set based on the determined recording density value.

Method and apparatus for setting storage capacity of recording media

There is provided an information recording/reproduction apparatus, a head levitation height control method, and a head levitation control circuit capable of adequately controlling a head levitation height. An information recording/reproduction apparatus having a headthat performs recording or reproduction of information on/from a recording medium, comprises: a drive sectionthat changes the levitation height of the headrelative to the recording medium based on a first drive method; a drive sectionthat changes the levitation height of the headrelative to the recording medium based on a second drive method different from the first drive method; a levitation height measurement section that measures the levitation height of the head; and a controller that controls the drive sectionsandbased on the head levitation height measured by the levitation height measurement section.

Information recording/reproduction apparatus, head levitation height control method and head levitation control circuit

Firstly, in order to check the noise level of a device, DC erasure is applied to a magnetic recording medium and the magnetic recording medium is read. Then, a test signal including a first order component and a third order harmonic frequency is written into the magnetic recording medium. The written test signal is read and Fourier transform is applied to the read signal to obtain the respective amplitude of the first order and third order harmonic components. Then, it is determined whether the amplitude of the third order harmonic component is sufficiently large compared with the obtained noise level. If the amplitude is sufficiently large, the flying height of the head is estimated using both the first order and third order harmonic components. If the amplitude is not sufficiently large, the flying height of the head is estimated using only the first order component.

Head flying height measuring apparatus in magnetic storage device

A method of detecting a gap between a head and a recording medium in an information-recording/reproducing apparatus that uses the head to record and reproduce information in and from the recording medium. In the method, the gap between the head and the recording medium is alternately increased and decreased, thereby gradually reducing the gap between the head and the recording medium. A detection signal is detected from which to determine a contact between the head or a slider supporting the head and the recording medium. When it is determined that the head or the slider has contacted the recording medium, the head is stopped and moved away from the recording medium to a prescribed position, and data representing a distance the head has moved to contact the recoding medium is acquired.

Information-recording/reproducing apparatus and method of detecting the gap between a head and a recording medium

An adaptive antenna unit is adapted to a mobile terminal for making mobile communication and adaptively forms an antenna directivity in a direction of a base station which exchanges signals with the mobile terminal. The adaptive antenna unit is provided with an azimuth sensor to detect at least one of rotation, inclination and present position of the mobile terminal, a transmitter-receiver section to control the antenna directivity in a direction in which a reception characteristic improves based on reception signals received from a plurality of antenna elements forming the antenna directivity, and a mechanism for correcting the antenna directivity in the direction of the base station, based on the at least one of rotation, inclination and present position of the mobile terminal detected by the azimuth sensor.

Adaptive antenna unit for mobile terminal

A portable card type data storage device with a large capacity and low power consumption is provided which enalbes two storage mediums with different features to be installed into a single slot of an information processing device. The card type data storage device of the invention includes a case having a connection slot , a first connector adapted to be inserted into and connected with a connection slot of an information processing device such as a PC , a hard disk housed in the case , a second connector for connection with a semiconductor memory inserted into the connection slot , and a storage device control section . When the first connector is inserted into and connected with the information processing device , the storage device control section receives electric power from the information processing device , and makes the hard disk and the semiconductor memory , which is inserted into the connection slot and connected with the second connector , function as external storages of the information processing device . Thus, two storage mediums comprising the semiconductor memory of low power consumption and the hard disk of a large capacity can be connected with the information processing device through the single slot thereof.

Data storage device

In order to measure a scanning light cut-off region, an output of a light receiving element and a threshold value set by an MPU are compared by a comparator and a region where the former is smaller than the latter is measured as the scanning light cut-off region. During one cycle of optical scanning, this threshold value is switched in a plurality of stages according to the scanning angle. By accurately measuring the scanning light cut-off region, the correct position and size of an indicator such as a finger or pen are calculated.

Optical scanning-type touch panel

A recurrence reflection sheet is provided to the outside of at least three sides of a quadrilateral display screen, two light send/receive units, which includes a light scanning element for scanning a light angularly in a plane which is substantially parallel with the display screen, and a light receiving element for receiving a reflected light from the recurrence reflection sheet, are arranged on the outside of the display screen. A cut-off region due to a finger as an indicator is obtained based on an angle of a scanning light in a timing of rise and fall of the received light level of the light receiving element, and a position of the indicator is calculated according to the obtained cut-off region.

An information displaying apparatus having a display unit for displaying information on a display screen,an indicator detector provided in the vicinity of the display screen,for detecting a position in a predetermined area on the display screen,indicated by an indicator and a size of the indicator, and an image control unit,for displaying an image on the screen,of the display unit according to the detected result by the indicator detector, wherein the image control unit,displays images on the display screen,of the display unit in different manners according to the position and/or size of the indicator detected by the indicator detector. According to this apparatus, for example, a thickness of one line can be changed and can be changed in steps during the drawing without specifying a size of a point and a thickness of a line to be drawn before the drawing operation. Moreover, subtle blur, etc. obtained in such a manner that an image is drawn by a writing brush dripped in the ink can be expressed.

Information displaying apparatus

An ultrasonic printing method by which recording of a high resolution can be achieved. In the ultrasonic printing method, some or all of a plurality of ultrasonic oscillators are selectively driven in such phases that a difference in phase at a predetermined point between a reference ultrasonic wave from one of the selected ultrasonic oscillators and another ultrasonic wave from any other one of the selected ultrasonic oscillators is equal to or less than one-fourth a wavelength of the ultrasonic waves in a transmission medium for the ultrasonic waves from the selected ultrasonic waves to the predetermined point. The ultrasonic printing method can be applied to various printing apparatus for which recording of a high resolution is required.

Ultrasonic printing apparatus and method in which the phases of the

The ultrasonic coordinates input device includes receivers grouped into a plurality of groups, each receiver receiving the ultrasonic waves propagated through a propagator so as to calculate the coordinates of the ultrasonic wave inputted positions on the basis of signals received by each group, thereby ensuring that the coordinates are calculated with a simple mathematical formulae with a negligible error if any.

Ultrasonic coordinates input device

There is provided an ultrasonic diagnostic apparatus in which a plurality of piezoelectric transducers are arranged in a predetermined direction so as to transmit and receive ultrasonic waves to obtain a tomographic image on the inside of the subject. The ultrasonic diagnostic apparatus adopts such a scheme that a sector scan is electronically performed, and is capable of preventing deterioration of an image by reducing an influence of reflection of the ultrasonic waves from the ribs, and forming a good image improved in resolution. An intersection of scan lines at at least receiving end is set up between rib-to-rib which are located at the position deeper than the body surface of the subject. An aperture for transmitting and receiving of ultrasonic waves along the scan line of the central part of the sector configuration is wider than that along the scan line of the edge portion of the sector configuration.

Ultrasonic diagnostic apparatus

An ultrasonic coordinate input, apparatus comprising a plurality of ultrasonic wave receivers to receive ultrasonic wave emitted by a cordless ultrasonic pen and propagating in an ultrasonic propagating medium, a plurality of receiving circuits for detecting the rising edges of received signals of the ultrasonic wave receivers, a measuring circuit for measuring the difference in time of receiving ultrasonic wave between the ultrasonic wave receivers and a calculating circuit for calculating the coordinates of ultrasonic wave input position according to the result of measurement. When the receiving circuits, the measuring circuit and the calculating circuit are installed together with the ultrasonic wave receivers on the ultrasonic propagating medium, the entire apparatus can be made small in size.

Ultrasonic coordinate input apparatus

There is provided an ultrasonic printer in which convergent ultrasounds are radiated to emit an ink near a convergent point of the convergent ultrasounds in the form of an ink droplet and deposit the ink droplet on a recording medium such as a paper sheet, thereby performing a recording on the recording medium with multiple ink dots, with higher resolution. The ultrasonic printer has a plurality of ultrasonic transducers which transmit phase-controlled ultrasonic waves to form an convergent ultrasonic acoustic beam.

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Kawasaki, Japan

Atsuo Iida