Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Oki Electric Industry Co., Ltd.

Mitsubishi Denki K.k.

Koichi Takeuchi

Kunimaro Tanaka

Kazuhiko Tsutsumi

Osamu Ito

Isao Watanabe

Kyosuke Yoshimoto

Kazuhiko Nakane

Masayoshi Shimamoto

Teruo Furukawa

Yoshihiro Kiyose

Kyosuke Yosimoto

Shunichi Sekiguchi

Yoshihisa Yamada

Kazuo Sugimoto

Hirofumi Nishikawa

Masaharu Ogawa

Hajime Nakajima

Minoru Ozaki

Yoshiyuki Nakaki

Hironobu Abe

Yusuke Itani

Kouichi Yamada

Mitsuo Maeda

Motomu Yoshimura

Hideaki Maehara

Yoshiki Nakajima

Toshiyuki Yoshida

Fumio Matsuda

Yosuke Ishiwatari

Daiki Kudo

Shinichi Aoki

Masayuki Muratani

Yoshiyuki Nakai

Ryuichirou Aria

Junichi Kitsuki

Ryuichirou Arai

Takeo Okada

The present invention enables a user terminal to perform communication while maintaining anonymity of a user. An ID management device of the present invention includes a storage unit configured to store use status of identification information for communication of an application service provided within a predetermined area, an issuing unit configured to issue unused identification information to a user terminal provided with the application service, and an updating unit configured to, when unused identification information is issued, update the use status to indicate that the unused identification information is in use, and, when a use end condition for issued identification information is satisfied, update the use status to indicate that the issued identification information is unused.

ID management device, program, user terminal, and ID management system

It is an object to obtain a high-resolution image generation apparatus that can generate a high-quality image by sorting out good portions from faulty portions in optical flow. The present invention includes: a hard disk that stores multi-viewpoint image information and parameter information of a base image and a plurality of reference images; an optical flow computation unit that extracts a plurality of pairs of the base image and a reference image, the plurality of pairs each including a different reference image, and computes optical flow for each pair; a depth information computation unit that computes depth information which indicates depth of each pixel of the base image for each pair, based on optical flow and the parameter information; and an optical flow sorting unit that determines whether or not each piece of pixel-based correspondence information included in the optical flow of each pair is to be used for improving a resolution of the base image, based on two pieces of the depth information.

High-resolution image generation apparatus, high-resolution image generation method, and high-resolution image generation program

An intra-scene and inter-scene adaptive coding unitconverts an MPEG-2 video bit stream into a slave stream by using both coded data which is included in the coded data about scene video units in a master stream recorded in a data recording unitand for which alternative coded data to be used for prediction reference has not been retrieved by an inter-scene prediction determining unit, and coded data retrieved by the inter-scene prediction determining unitfor the prediction reference.

Image coding device, image decoding device, image coding method, and image decoding method

Provided is a digital broadcast receiving system which facilitates to extract and obtain the information necessary for program recording and reproduction. A packet filter () allows to pass a packet for transmitting the moving picture and voice data related to the program to be recorded, and a packet for transmitting a PSI table, but it does not allow to pass a PMT related to programs other than the program to be recorded. An information table generator () generates a PAT containing only the information on the program to be recorded. A new PSI table generated by the information table generator () is inputted to an information table substitution unit (), by which a PSI table contained in the packet stream passing through the packet filter () is substituted for the new PSI table.

Digital broadcast receiving system

The digital broadcasting station describes the first unique information as identification information in addition to the event identification prescribed by ARIB standard as opposed to LIT describing the detailed information of local event. The first unique information is for example a date of amended Julian calendar. Therefore, the digital broadcasting receiver can identify the digital broadcasting program uniquely for a long term based on the event identification and the first unique information. Besides, the digital broadcasting station and the digital broadcasting receiver with the use of program extended information such as LIT are not yet put to practical use and so the existing digital broadcasting receiver had to be changed neither.

Digital broadcasting system and digital broadcasting station and digital broadcasting receiver

A magneto-optic recording system uses a unit recording medium having on a substrate a first magnetic layer whose Curie temperature is low and also having on the first magnetic layer a second magnetic layer whose Curie temperature is high. The system heats a spot on the medium with a heating device. The system may employ two such unit recording media, each having the second magnetic layer magnetized in one direction. The two unit recording media are superposed on each other and formed integrally so as to obtain a magneto-optic recording medium in which the amount of information recorded and the recording speed are doubled. In addition, a light-emitting device and a magnetic field generator are added to the magneto-optic recording medium to obtain a compact magneto-optic recording system with a low level of power consumption.

Magneto-optic recording system

A unit recording medium, having on a substrate a first magnetic layer whose Curie temperature is low and also having on the first magnetic layer a second magnetic layer whose Curie temperature is high, is heated by a heating device. After two such unit recording media each having the second magnetic layer magnetized in one direction are fabricated, and the fabricated two unit recording media are superposed on each other and formed integrally so as to obtain a magneto-optic recording recording medium in which the amount of information recorded and the recording speed are doubled. In addition, a light-emitting device and a magnetic field generator are added to the magneto-optic recording medium to obtain a compact magneto-optic recording system with a low level of power consumption.

Magneto-optic recording medium method of manufacturing the same and

A magneto-optic recording medium has a cartridge provided with a magnetization direction indicating portion for indicating the direction of magnetization of a second magnetic layer. Alternatively, the direction of magnetization of the second magnetic layer is recorded in advance in the first magnetic layer. The direction of magnetization of the second magnetic layer indicated or recorded is detected and recognized. A magnetic field oriented in an opposite direction to the direction of magnetization detected is imparted to the magneto-optic recording medium. Alternatively, predetermined information is recorded in the first magnetic layer, the direction of magnetization of the second magnetic layer is detected on the basis of a signal reproducing that information, and the direction of a magnetic field to be applied to the magneto-optic recording medium is set on the basis of the direction of magnetization thus detected. In addition, the direction of the magnetic field to be applied to the magneto-optic recording medium is set and the output of a light beam is changed on the basis of the direction of the second magnetic layer detected.

Magneto-optic recording medium, magneto-optic recording system and

Methods and apparatuses are disclosed for improving accuracy of recording and reproducing information onto and from a magneto-optic recording information medium. In the first method, a width of a mark formed by a relatively low intensity light beam between two kinds of light beam intensities used for recording information is made larger than a sum of a track land width and the maximum track offset of the light beam, thereby the mark formed by the relatively low intensity light beam covers the track land portion in its full width. In the first apparatus, a reflected light beam from the magneto-optic recording information medium is split into a reflected beam for information reproducing and a reflected beam for tracking and focusing servos at the reproducing, thereby the apparatus can remove part being affected by the track groove portion from the reflected light beam for information reproducing. In the second method and apparatus, an intensity ratio of the two kinds of intensities of light beams used for information recording is controlled in such a manner that a mark width formed by the relative low intensity light beam is wider than a mark width formed by the relative high intensity light beam.

Information recording method for overwriting a magneto-optic recording

Information recording method and information recording apparatus for

A magneto-optic recording apparatus which has a magnetic field generator that applies a magnetic field with a constant direction to a magneto-optic recording information medium for overwriting information to improve accuracy of recording and reproducing information onto and from magneto-optic recording information medium and further has an auxiliary magnetic field generator that compensates a variation of intensity of a magnetic field generated by the magnetic field generator and applied to the magneto-optic recording information medium is disclosed as the first invention. Also, a magneto-optic recording apparatus which performs synchronous wave detection of the reflected light signals from the magneto-optic recording information medium and controls A.C. voltages applied to an exciting coil of the magnetic field generator in response to the detected result of the synchronous wave detection, thus optimizing amplitudes of the reproducing signals from the magneto-optic recording information medium is disclosed as the second invention.

Magneto-optic recording apparatus with controlled magnetic field

A magneto-optical disc apparatus comprising a distance sensor detecting the distance optically between a magneto-optical disc and a magnetic head, a circuit sample-holding the detected output of the distance sensor, and a controlling mechanism controlling the distance between the magneto-optical disc and the magnetic head in the case where the detected output of the distance sensor is changed suddenly, responsive to a sample-held detected output immediately before the sudden change. Even when the detected output of the distance sensor changes suddenly by receiving a reflected light from a sector mark of the magneto-optical disc, the distance between the magneto-optical disc and the magnetic head does not change suddenly according to the sudden change, since the distance between the both is controlled responsive to the detected output having been sample-held immediately before the sudden change.

Magneto-optical disc apparatus having head-disc distance control

An apparatus in accordance with the present invention sequentially fixes the wavelength of a light beam irradiated from a light source whose oscillation wavelength sequentially varies to a plurality of different wavelengths to a recording medium to required wavelengths each capable of forming a hole at absorption spectrum of the recording medium, synchronizes timing of change of the wavelength of the light source with timing of recording or regenerating each bit of information, records the optical hole formed in a manner that each bit of information corresponds to the wavelength varying in sequence, and detects the formed hole to regenerate information. Furthermore, the holes formed by the same wavelength are recorded at the positions separated by a distance capable of avoiding interference, while the holes formed by different wavelengths in correspondence to each bit of information are recorded at nearly the same position while that position is slightly displaced at a time, and thereby information is multiple-recorded with high density.

Frequency selective optical data record/regenerate apparatus

An arc extinguishing chamber confined by a cylindrical housing of stainless steel, and an insulating chamber within a hollow cylindrical insulator, communicate with each other and are maintained in a vacuum with two contacts formed of an electrically conductive material having lower melting and boiling points than copper disposed in the arc extinguishing chamber. A pair of apertured shield plates disposed respectively at each end of the housing and another pair of shield plates mounted respectively on each contact rod are formed of stainless steel. The housing and the shield plates prevent the extinguishing and insulating chambers from overheating during exhaustion at a high temerature and also from being contaminated in operation due to the vaporization of the contacts. Two heating devices are used to heat the housing to a higher temperature than the insulating chamber during the exhausting operation.

Vacuum circuit interrupter

Growing community of inventors

Amagasaki, Japan

Koichi Takeuchi