Fujitsu Corporation

Hitachi, Ltd.

Fujitsu Hitachi Plasma Display Limited

Hitachi Consumer Electronics Co., Ltd.

Hitachi Plasma Patent Licensing Co., Ltd.

Hitachi Maxwell, Ltd.

Hitachi Appliances, Inc

Hitachi Transport System, Ltd.

Tadayoshi Kosaka

Yoshiho Seo

Fumihiro Namiki

Kazushige Takagi

Osamu Toyoda

Satoshi Ouchi

Hajime Inoue

Keiichi Betsui

Tomoki Kobori

Yoshimi Kawanami

Masayuki Shibata

Toshiyuki Nanto

Koichi Sakita

Yasuhiko Kunii

Tatsutoshi Kanae

Mayumi Nagayoshi

Yoshimi Shirakawa

Kazunori Ishizuka

Kazuhide Iwasaki

Akihiro Fujinaga

Katsuya Irie

Kenji Awamoto

Shigeo Kasahara

Shinya Fukuta

Shin'ya Fukuta

Souichirou Hidaka

Kazunori Inoue

Yasunobu Hashimoto

Hitoshi Hirakawa

Akira Tokai

Shinji Tadaki

Noriyuki Awaji

Manabu Hasegawa

Hideki Harada

Kenji Yoshida

Hidetoshi Teraoka

Minoru Hasegawa

Katsuya Miyata

Naoki Itokawa

Koji Ara

Takashi Shiizaki

Tomonari Misawa

Takashi Katayama

Toshiko Matsumoto

Yusuke Jin

Issei Suemitsu

Tetsuhiro Horita

Naoki Furuya

Takeo Masuda

A server device stores data sent from a client device together with data identification information and stakeholder identification information that identifies a stakeholder operating the client device. A controller determines a number of stakeholders included in the data, and, in a case where the data stores information on stakeholders of a plurality of n organizations, leaves information on a specific stakeholder unrewritten and rewrites information of other stakeholders with optional information to generate n types of management data. The controller generates first hash value for each of the n types of management data, and controls n transactions including the first hash value to be issued to a blockchain, and transmits the transaction. The controller returns, in response to a browsing request specifying the data identification information and the stakeholder identification information from the client device, management data corresponding to the stakeholder identification information among the n types of management data.

Server device and traceability method

An article management support apparatus sets coordinates indicating a position of an observation point and an observation direction from the observation point in a space including article storage spaces, acquires coordinates of an article picking opening of an article storage space within a predetermined range with respect to the position of the observation point and the observation direction, acquires information on the article stored in the article storage space corresponding to the article picking opening for which the coordinates are acquired, transforms the acquired coordinates of the article picking opening into coordinates on an image seen in the observation direction from the position of the observation point, generates an image for displaying the information on the article stored in the article storage space corresponding to the article picking opening for which the coordinates are acquired in association with a position of the transformed coordinates, and displays the generated image.

Article management support apparatus, article management support system, and article management support method

The present invention pertains to a power monitoring device configured in such a manner as to make it as easy as possible to perform power monitoring, notification and control for customers in coordination with the power utilization rate of a utility grid. The power monitoring device is provided with: a target power setting unit that receives, from outside, information indicating the power utilization rate of a utility grid by time, and, with regard to time periods in which the power utilization rate is greater than a prescribed threshold value, reduces preset target power consumption levels, and sets target power consumption levels by time; and an assessment and control unit that obtains, from outside, the power usage of power-consuming devices, and performs control in order to save power for the power-consuming devices in time periods in which the obtained power usage exceeds the target power consumption level.

Power monitoring device and power monitoring system

A projector using coherent light as a light source includes: one or more coherent light sources emitting coherent light beams; a beam scanner which changes a direction of the coherent light beam; and a beam splitter which splits a beam into multiple segments and changes a phase of light of each split segment, the beam splitter being located in an optical path between the beam scanner and the coherent light source. This projector reduces speckle noises. The beam splitter includes a pair of transparent substrates; a plurality of parallel electrodes disposed on each surface of the pair of transparent substrates, the pair of the parallel electrodes being disposed in a perpendicular direction to each other. Voltages are applied to the respective electrodes at predetermined time intervals so as to produce different potentials in a liquid crystal sandwiched by the transparent substrates.

Laser projector with reduced speckle

An optical unit includes a light source that emits light to be projected onto a screen, one or a plurality of optical elements that controls a spread of a beam of light from the light source to the screen, a combining element that combines the light emitted from the light source, and a scanning element. The light source outputs an optical beam that will generate an elliptically shaped beam spot on the screen, the beam spot having a major axis substantially perpendicular to a scanning direction, and the light source is driven with pulse width modulation (PWM) so that one driven pulse corresponds to one beam spot on the screen.

Optical unit

A laser projector for scanning a laser beam output by a multimode laser light source and displaying an image includes a laser driving unit to drive the multimode laser light source so that two-dimensional output patterns of a shape of the laser beam are different in each display frame. The laser driving unit applies to the multimode laser light source a driving waveform pattern which has the same product of an output intensity and output time of a laser light source during a display time of one dot and which includes an output intensity and output time different in each display frame.

Laser projector and method of scanning laser beam

A beam light source of an image display device which displays an image on a screen by scanning an optical beam in a two-dimensional direction in which the beam light source includes a light source that emits a diffuse light modulated according to an image signal, and an optical element that shapes the light emitted from the light source to the optical beam. The optical beam has an elliptically shaped beam spot on the screen in which a major axis of the beam spot is substantially perpendicular to a scanning direction. A horizontal spot size of the optical beam on an exit surface of the optical element is at least or equal to a horizontal spot size of the optical beam on the screen, and the horizontal spot size of the optical beam on the screen is no greater than a horizontal pixel pitch displayed on the screen.

A partition is formed by the process including a step for providing a sheet-like partition material that covers a display area and outside thereof on the surface of the substrate, a step for providing a mask for patterning that covers the display area and the outside thereof, so that a pattern of the portion arranged outside of the display area of the mask is a grid-like pattern, a step for patterning the partition material covered partially with the mask by a sandblasting process, and a step for baking the partition material after the patterning.

Method for forming partitions of plasma display panel by using sandblasting processing

The present method is to drive a plasma display panel which displays a frame composed of a plurality of sub-fields having different weights of luminance. The method comprises using plural kinds of application voltage waveforms different in light emission luminance, as pulse voltages for sustain discharges in display of each sub-field, and adjusting the number of waves in each of the plural kinds of application voltage waveforms according to the weight of luminance set for each sub-field, thereby performing gradation display.

Method for driving a plasma display panel

Disclosed is an optical unit for an image display device, the unit including: one or a plurality of light sources; one or a plurality of optical elements that control a spread of light; a combining element that combines the beams of light emitted from the light sources; and a scanning element, wherein the light from each of the light sources generates an elliptical beam spot on a screen and the spot has a major axis substantially perpendicular to a scanning direction, the result is that the unit is simple in structure, inexpensive, compact, lightweight, and capable of providing high-resolution image quality, thus providing the display device reduced dimensionally and in weight. Such an image display device using the optical unit is also disclosed.

A display device () including a surface discharge type plasma display panel () performs an addressing operation, a sustain operation and a reset operation. In the addressing operation, address discharge of an opposed discharge form with the second electrode (Y) used as a cathode is generated between the second electrode (Y) and a third electrode (A) in a cell to be energized or in a cell not to be energized. In the reset operation, an obtuse wave pulse (Pr) having a negative polarity is applied to the second electrode (Y) so as to generate charge adjustment discharge starting from discharge of the opposed discharge form with the second electrode (Y) used as a cathode between the second electrode (Y) and the third electrode (A).

Method for driving plasma display panel and display device

A technique for achieving both discharge voltage reduction and discharge stabilization in a PDP and the like is provided. This PDP manufacturing method includes, for a structure of a front plate structure () to be exposed to a discharge space () to be filled with a discharge gas, a step of forming a first layer () having an effect of discharge protective layer on a dielectric layer (), a step of forming a second layer () for protecting the first layer on the first layer, and a step of forming a third layer () of a powder for discharge stabilization to be exposed to the discharge space (), the steps being performed in vacuum manufacturing process. And, the structure is made such that a surface of the first layer is exposed to the discharge space () by a step of removing the second layer by an aging discharge in the discharge space ().

Plasma display panel having a discharge stabilizer powder and method of manufacturing the same

Method for forming partitions of plasma display panel by using sandblasting process

A charging/discharging apparatus () for charging a capacitance to be charged/discharged (Cp) includes: a recovery capacitor (Cr) for recovering electric energy which has one terminal connected to a first power supply (GND) through first switch means (SW) and another terminal connected to a second power supply (Vs+Vo) through second switch means (SW); first path forming means (D) which has one terminal connected to a connection point between the second power supply and the other terminal of the recovery capacitor and another terminal connected to the capacitance to be charged/discharged, and charges the capacitance to be charged/discharged through a resonant inductor (L) when the first switch means is turned on; second path forming means (D) which has one terminal connected to a connection point between the first power supply and the one terminal of the recovery capacitor and another terminal connected to the capacitance to be charged/discharged, and discharges the capacitance to be charged/discharged through the resonant inductor (L) when the second switch means is turned on to recover electric energy to the recovery capacitor.

Electric charging/discharging apparatus, plasma display panel, and electric charging/discharging method

Growing community of inventors

Kawasaki, Japan

Tadayoshi Kosaka