Kabushiki Kaisha Toshiba

Toshibumi Seki

Hideaki Sato

Kenichiro Yoshii

Yasuhiro Kimura

Haruhiko Toyama

Takayuki Miyazawa

Tatsunori Kanai

Hideki Yoshida

Hideaki Shiotani

Satoshi Ito

Tetsuo Hasegawa

Akihiko Ohsuga

Yasuyuki Tahara

Yasuo Nagai

Shinichi Honiden

Nobuyuki Sawashima

Keiichi Handa

Yasukuni Okataku

Naoshi Uchihira

Hiroshi Kaibe

Shinichiro Hamada

Shinsuke Tamura

Yuichi Koba

Atsushi Shono

Takeshi Tanaka

Keisuke Hashimoto

Yasuo Namioka

Yoshio Kataoka

Takashi Moriyasu

Akira Kagaya

Haruhiko Iida

Hitoya Nakamura

In a data transfer scheme using a caching technique and/or a compression technique which is capable of reducing the network load of a network connecting between data transfer devices, correspondences between data and their names are registered at the data transfer devices and the corresponding names are transferred, instead of transferring the data, for those data for which the correspondences are registered, so that it is possible to reduce the amount of transfer data among the data transfer devices.

Data transfer scheme using caching technique for reducing network load

In a data transfer scheme using a caching technique and/or a compression technique which is capable of reducing the network load of a network connecting between data transfer devices, correspondences between data and their names are registered at the data transfer devices and the corresponding names are transferred, instead of transferring the data, for those data for which the correspondences are registered, so that it is possible to reduce the amount of transfer data among the data transfer devices. Server side data transfer devices and client side data transfer devices can be provided in multiple-to-one, one-to-multiple, or multiple-to-multiple manners.

In a data transfer device, presence/absence of a prescribed header in the received request message is analyzed, and information indicating the presence/absence of the prescribed header, or information indicating either presence or absence of the prescribed header when the prescribed header is either present or absent as a result of analysis is stored. Then, when a reply message corresponding to the request message is received, the presence/absence of the prescribed header is checked by referring to the stored information, and the reply message is transferred according to a result of checking.

In a data transfer scheme using a caching technique and/or a compression technique which is capable of reducing the network load of a network connecting between data transfer devices, correspondences between data and their names are registered at the data transfer devices and the corresponding names are transferred, instead of transferring the data, for those data for which the correspondences are registered, so that it is possible to reduce the amount of transfer data among the data transfer devices. Even when the name corresponding to the data is not registered so that it is impossible to transfer the corresponding name instead of transferring the data, it is possible to reduce the amount of transfer data among the data transfer devices by transferring the compressed data in which this data is expressed in a compressed form by utilizing the name corresponding to the registered reference data.

Data transfer scheme using caching and differential compression techniques for reducing network load

A contents distribution system uses a copyright rental use scheme in which the economical burden on the users at a time of utilizing contents can be reduced to a reasonable level, and appropriate fees can be collected for the copyrights of the contents created and provided at each stage by the raw material creators and the secondary product creators. In this system, the secondary product creator can create the secondary product contents by incorporating the raw material contents for free, and sell the secondary product contents. The end-user pays respective utilization fees to the secondary product creator and each raw material provider at a time of the purchasing the secondary product contents.

Contents distribution system for handling secondary products utilizing raw material contents

In a client server system, the network load is reduced by using the fingerprint compression and the differential compression, by providing the proxy server at the server side and using the general purpose browser at the client side, without requiring a separate proxy server at the client side. The client downloads and installs a fingerprint cache processing engine as a plug-in.

Data transfer scheme for reducing network load using general purpose browser on client side

At a data transfer device for transferring a request message from a first communication device to a second communication device, and transferring a response message containing a response data from the second communication device to the first communication device, an identifier to be allocated to the response data contained in the response message is generated according to a content of the response data, and a re-direct response message for re-directing the first communication unit to a URL containing the identifier is transmitted to the first communication device, instead of transmitting the response message, when the response message is received from the second communication device, and the response message containing the response data stored in the memory in correspondence to the identifier contained in the URL is transmitted when the request message for the URL containing the identifier is received from the first communication device.

Data transfer scheme using re-direct response message for reducing network load

An apparatus for supporting parallelization according to the invention is characterized by comprising a serialization unit for converting a first concurrent program having a concurrent structure into a sequential program capable of being sequentially executed, a debugging unit for debugging the sequential program and forming debugging information, and a concurrent program programming unit for performing parallelization of the debugged sequential program on the basis of the debugging information to convert the sequential program into a second concurrent program. With above configuration, the debugging unit includes a unit for introducing information associated with concurrency to the sequential program.

Programming method for concurrent programs and program supporting apparatus thereof

With an index that represents the content of a message, a communication band is assigned. At this point, communication bands are managed as fixed bands and variable bands. An index is used to secure a fixed band when the transmission a data flow corresponding to a communication request is started. In addition, an index is used to coordinate variable bands. Thus, priority levels of communication requests are objectively designated corresponding to the contents of communication requests and features of mediums. In the case that a fixed band and a variable band are secured, when a function for scheduling and reserving communication resources for communication requests is accomplished, priority levels are objectively designated with an index.

Communication apparatus, communication method, and record medium

Data processing system, computer network, and data processing method

When inexecutable event occurs, an event format conversion rules table is referred to in order to convert the format of the event, then the communication message including the converted event is transmitted through a network. If the communication message is received through the network, the converted event is re-converted into an event that has an executable format by referring to the event format conversion rules table. An event filter refers to an event filter table that has processing necessity information for each event and sends only an event that needs to be processed to an event processing portion. Even if the local system cannot execute an event, the event is transmitted to another system through a communicating portion.

Event controlling system for integrating different event driven systems

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Kanagawa, Japan

Toshibumi Seki