Hitachi, Ltd.

Chiho Kitahara

Takeshi Ishizaki

Minoru Koizumi

Yoshiyuki Nakayama

Tomoichi Ebata

Kenjiro Mori

Masami Kameda

Yoshiaki Adachi

Tomomi Suzuki

Toshiichiro Sasaki

Hiroshi Furukawa

Shigeru Miyake

Hideomi Idei

Satoru Tezuka

Kenichi Kihara

Toshimitsu Hayashi

Shigeaki Kinoshita

Shihoko Taguchi

Hikari Namba

Alberto Suzano

Emiko Kobayashi

Tadashi Yamamitsu

According to the invention, techniques for controlling the quality of each communication service in a network automatically according to measured information of network traffic are provided. In a representative embodiment, a network measurement controlling system is provided according to the present invention, which comprises a control server, a router, and a meter connected to a network. The meter receives packets from a network and measures the number of packets, and the like, according to preset measurement rules, and transfers measured data to a control server. The control server holds control rules including its control policy for assuring the quality of each communication service, analyzes measured data transferred from the meter, and transmits control commands. The router controls the QoS automatically in real time according to the status of the network by receiving control commands and controlling communication service quality.

Network measurement controlling system apparatus and method

In order to allow efficient use of bandwidth in communication paths in a surveillance system, the surveillance system has an operation unit which assigns fixed bandwidths to each of the communications taking place between camera nodes, which transfer image data at a uniform rate, and monitor nodes. A fixed bandwidth is assigned to, all communications taking place between the operation unit and sensor nodes, which generate alarm information at a non-uniform rate. If there is an increase in network traffic, bandwidth allocations, for communication between the camera nodes and the monitor nodes are reassigned so that bandwidth for these communications is reduced. The camera nodes use the bandwidth assigned to the camera nodes to transfer image data. The sensor nodes transfer alarm information using any bandwidth.

Method of controlling quality of communication among a plurality of clients over a network

Surveillance system and network system

In a network development support system, it is supported that logical hierarchic structure, physical parameters, and logical parameters of a network are integrally designed in an environment in which relationships therebetween can be confirmed. Definition of logical hierarchic structure of the network is accepted in the form of a tree of containers in a container tree window. Physical and logical parameters are accepted in physical and logical object windows, respectively. The physical and logical object windows are created in association with containers of the container trees.

Network development support system

In a conferencing system comprising telephones and workstations to assist a cooperative work, a conference display control method for a visual user interface is provided. A conference window is displayed on a workstation display during execution of a teleconference. The conference window includes a meeting table area as a shared space and a local area which cannot be seen by the other participants. Document objects corresponding to a document application program which is used in the conference are arranged on those areas. The distribution of the documents, reference of information, and execution of the application program can be executed by direct manipulation of objects using a mouse. In the conference window, the document object can be operated at both the cooperative work place and the local work place. The operations during the conference can be simplified. Further, the conference window is displayed on the workstation display during the teleconference execution, the conference documents are sharingly executed by an OHP object on the conference window, and the documents during the shared execution are displayed in an OHP area, so that the kind of document which is being executed can be grasped.

Conference display control method and apparatus for an electronic

A cooperative information processing system in which a cooperative execution application program can utilize an auxiliary application program that is being executed locally. The communication control program has the request conversion unit, the input conversion unit and the server-dependent information table. The communication control program utilizes the server-dependent information table to interpret the format of an inter-application message between the sites and carries out a proper conversion. Thus, communication between the cooperative execution application program and the auxiliary application program locally executed at a specific site, such as for example, the Japanese inputting front end program, is made possible.

Cooperative information processing method and apparatus utilizing local

In a conferencing system comprising telephones and workstations, a conference display control method for a visual user interface is provided. A conference window is displayed on a workstation display during a teleconference and includes a meeting table area as a shared space and a local area which cannot be seen by the other participants. Document objects corresponding to a document application program which is used in the conference are arranged on those areas. The distribution of the documents, reference of information, and execution of the application program can be executed by direct manipulation of objects using a mouse. In the conference window, the document object can be operated at both the cooperative work place and the local work place. Further, the conference window is displayed on the workstation display during the teleconference execution, the conference documents are sharingly executed by an OHP (overhead projector) object on the conference window, and the documents during the shared execution are displayed in an OHP area, so that the kind of document which is being executed can be grasped. Moreover, when a participant participates in a plurality of teleconferences on a communication network by one teleconference terminal, one teleconference can be recognized as a specific conference space, so that the user can selectively use a plurality of teleconferences without confusing them.

Display control method and apparatus for an electronic conference

A group working system includes a plurality of work stations interconnected through a network and each having a multi-window function. Each work station is provided with a group working user interface program executed under the control of a control program for transferring control information for a group work with the other work stations. When input operation is performed for a window of a group working mode in any one of the work stations, indication information for identifying an operator or work station performing the input operation is output to an additional window which is paired with the above-mentioned window. By making reference to the indication information, each user can avoid conflict in the input operation to the same window of the group working mode with other users.

Group working system having operator discriminating function

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Yokohama, Japan

Chiho Kitahara