Fuji Xerox Co., Ltd.

Fuji Electric Co., Ltd.

Other

Xerox Corporation

Hokuriku Electric Power Company

Toshiya Yamada

Kansuke Fujii

Takashi Nagao

Jun Shingu

Jun Miyazaki

Kazutaka Hirata

Kazuya Yamada

Masaki Katoh

Hitoshi Ikeda

Dennis Lee Venable

William A Fuss

Michael Robert Campanelli

James E Bollman

Motofumi Fukui

Hirohito Shibata

Takeshi Yoshioka

Motohiro Katayama

Yuichi Ueno

Taro Terao

Yoshihiro Masuda

Tomonari Yamauchi

Kazuyoshi Umezawa

Katsunori Horii

Norikazu Kanao

The disclosed distributed power supply system does not become disconnected from a grid simultaneously with others when the grid voltage falls instantaneously. In a distributed power supply device which controls an inverter circuitbased on a control signal obtained by comparing a predetermined carrier signal and voltage command signals of three phases and which converts DC power to AC power and supplies the AC power to a power grid of a three-phase AC power supply, fundamental wave signals of three phases are generated from a grid voltage of the three-phase AC power supply. A reference cosine wave signal is generated from the fundamental wave signals of three phases. A third harmonic signal is generated from the reference cosine wave signal and the fundamental wave signals of three phases. The three-phase fundamental wave signals and the third harmonic signal are added to generate voltage command signals of three phases.

Distributed power supply system

With a method whereby reactive power is changed from a fluctuating output to a constant output by a frequency rise or fall monitor circuit stage level being exceeded, and an isolated operation is detected, a problem occurs with a small scale grid in that, as the frequency is liable to fluctuate due to a load fluctuation, there is liable to be a false detection of an isolated operation. In contrast, an abnormal frequency stage detection can be performed such that the frequency at a point when the rising edge of a reactive power fluctuation is detected, and the frequency at a point when the falling edge is detected, are detected sequentially, and an abnormal frequency stage detection is recognized when the order of the difference between the current detection value and the previous detection value is 'increase', 'decrease', &#x201c;increase&#x201d;.

Isolated operation detection device

A distributed power supply system in which no simultaneous disconnection from the system occurs when a system voltage momentarily drops is provided. It includes an inverter circuit that converts a direct current power generated by a direct current power supply and that supplies the alternating current power to an alternating current power supply power system, and an inverter control circuit for carrying out PWM control of the inverter circuit, wherein the inverter control circuit includes a three-phase voltage command signal generation unit, that is configured of a three-phase fundamental wave signal generation unit that generates three-phase fundamental wave signals from two phase components of voltage detected by a voltage detector, and a third harmonic signal generation unit that adds together third harmonic components of respective phases, having a predetermined amplitude, generated based on the three-phase fundamental wave signals.

Distributed power supply system with harmonic signal generation for stabilization

A grid-connected inverter includes first and second power conversion circuits, a contactor and a control circuit. The first conversion circuit converts a first DC voltage to a second DC voltage. The second conversion circuit converts the second DC voltage to an AC voltage. The contactor connects an output side of the second conversion circuit to a power system. The control circuit includes a decision circuit and controls start and stop operations of the conversion circuits, and opening and closing of the contactor. The decision circuit decides whether a condition of the contactor is abnormal by detecting, after the control circuit controls the contactor to be open, whether or not a value of the second DC voltage is less than a threshold value, and if the value of the second DC voltage is detected to be not less than the threshold value, decides that the condition of the contactor is abnormal.

Grid-connected inverter

During single operation of a distributed power supply system that has been disconnected from a commercial electric power system, a frequency increase monitoring circuit is operated and an instruction to output a larger amount of a constant reactive current is given to a reactive current controlling unit. After the output frequency of the distributed power supply exceeds a frequency increase level, the level of an active current is limited in accordance with the level of the outputted reactive current.

A recommendatory information provision system has a management apparatus and a user terminal device. The management apparatus includes a browsed information acquisition unit for acquiring information of a browsed document, a recommended document retrieval unit for retrieving a recommended document relevant to the browsed document, a recommendation history management unit for storing and managing history information which concerns recommendations of the recommended document, a recommendation history retrieval unit for retrieving from the recommendation history management unit, the history information of the recommended document which has been retrieved by the recommended document retrieval unit, and a recommendatory information provision unit for providing, to the user terminal device, the information concerning the recommended document and the history information of the recommended document as have been retrieved. The user terminal device has a display process unit for displaying the information on a screen.

Recommendatory information provision system

A display apparatus has an acquisition unit and a display unit. The acquisition unit acquires information of a meeting video and/or the meeting video from a video storage apparatus and the video storage apparatus stores a plurality of meeting videos. The display unit creates a introduction screen for introducing information of the meeting video based on the information acquired by the acquisition unit, and displays the introduction screen on a display surface.

Display apparatus, system and display method

A display device comprising includes an acquiring unit and a display unit. The acquiring unit acquires information about a conference from a storage device that stores conference information. The display unit creates an icon being representative of a feature of the conference and also a table, and displays the icon on the table corresponding to the conference. The display unit creates the icon and the table based on the information acquired by the acquiring unit.

Display device, system, display method, and storage medium storing its program

A communication apparatus includes a display device, a camera, a database, and a server. Display information is displayed on the display device. A viewer image of a first viewer, who is watching and listening to the display information, is taken with the camera. The display information is associated with the viewer image that has been taken with the camera. The display information and the viewer image are stored in the database that is connected over a network. The server reproduces the viewer image in association with the display information. A second viewer who has watched and listened to the viewer image of the first viewer is able to know the reaction of the first viewer, and thus new communication resulted from the reaction of the first viewer can be expected.

Communication apparatus and system handling viewer image

A document retrieval apparatus for retrieving documents from a document database in which documents are registered, and displaying the retrieved documents, the document retrieval apparatus includes: a keyword input unit for accepting input of a retrieval keyword for retrieving the documents; a document retrieval unit for retrieving the documents from the document database on the basis of the retrieval keyword; a keyword weight calculation unit for calculating those weights of the retrieval keyword which feature contents of the retrieved documents, as keyword weights; and a display process unit for displaying the retrieved documents in a state where the retrieval keyword contained in the retrieved documents is presented in display aspects conforming to the keyword weights.

Document retrieval apparatus

The present invention provides an element organization support apparatus, an element organization support method and a storage medium for facilitating the addition, deletion or modification of executive elements. This is an element organization support apparatus in which, upon receiving the input of a project to be accomplished including plural tasks from an input unit, a modeling processor searches an activity database for activity data with processible tasks as keys, selects and displays on a display unit real activity candidates, and reads out of a hard disk and displays information on past evaluation of the selected combination of real activities.

Element organization support apparatus, element organization support method and storage medium

A method and device for describing a complex color raster image as a collection of objects in a hierarchical and device independent format can be carried out using an apparatus for generating an image capable of being displayed and printed.

Structured image (SI) format for describing complex color raster images

A method and device for describing a complex color raster image as a collection of objects in a hierarchical and device independent format. The purpose of structured imaging (SI) is to expand the scope of a raster image to a collection of individually manipulable component objects. An SI is a hierarchical description of a single output image raster which may be used as one component of a page in a structured document. Objects contributing to the output raster may originate from text, graphics, other rasters or a combination thereof, and all maintain their heritage for selectability and modification. The SI describes not only the source data but also the image processing operations required for rendering the output raster. SI technology supports re-editability, customization and enhancement, automatic image assembly and high performance imaging. Thus, such a model has implications not only in an image editing and processing arena, but also in the filing and printing services used for image handling.

Structured image (Sl) format for describing complex color raster images

An image edit processing apparatus for editing digital images, and an image output apparatus for printing out the processed digital image. In the apparatus, image data is read by an image scanner, and such editorial jobs as enlargement/reduction, change of resolution, rotation, composition, and correction of tone or brightness are carried out for the thus read image data by a personal computer or work station or in print service, so that the edit processing is efficiently carried out at high speed.

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Kanagawa, Japan

Toshiya Yamada