Abstract: A real-time processing system that executes a plurality of threads, each of the threads being a unit of execution of a real-time operation, comprises a plurality of processors, a unit which selects a tightly coupled thread group from among the threads based on coupling attribute information indicative of a coupling attribute between the threads, the tightly coupled thread group including a set of tightly coupled threads running in cooperation with each other, and a unit which performs a scheduling operation of dispatching the tightly coupled threads to several of the processors that are equal to the tightly coupled threads to simultaneously execute the tightly coupled threads by the several of the processors.

Abstract: A transaction processing system capable of easily and efficiently realizing the file update processing by a plurality of transactions operating in parallel as well as the recovery processing at a time of a fault occurrence is disclosed. In the transaction processing system, a plurality of transactions that carry out update processing with respect to one file read out onto a buffer region are executed, and that one file is written into a stable memory device at a time of commit of one transaction among the plurality of transactions, where that one file contains a content of committed updates made by that one transaction and a content of non-committed updates made by other non-committed transactions, and information for cancelling the non-committed updates.

Abstract: A transactional file system which is capable of realizing atomic update of plural files by transactions is disclosed. In the transactional file system, a log entry containing an information for validating all updates made by a transaction collectively on a stable memory device, is generated for one or more files updated on a buffer region by the transaction since a start of a processing of the transaction until a commit of the transaction. Then, the log entry is written into the stable memory device at a time of the commit of the transaction.

Abstract: A transactional file system capable of realizing atomic update of plural files by transactions. In the transactional file system, a log entry containing information for validating all updates made by transaction collectively on a stable memory device, is generated for one or more files updated on a buffer region by the transaction since a start of a processing of the transaction until a commit of the transaction. Then, the log entry is written into the stable memory device at a time of the commit of the transaction.

Abstract: A data management system capable of realizing improved flexibility, independency and expandability together is disclosed. The data management system is formed by a memory unit configured to store a plurality of data operation modules for operating data which have different operation functions, and an operation unit configured to read out data requested by the application program from the data storage system, select those data operation modules that should carry out the operations with respect to the data such that the data will be in compliance with a data model suitable for the processing that the application program wishes to carry out, from the plurality of data operation modules, such that the data to which the operations are applied by selected data operation modules are given to the application program.

Abstract: Process migration method includes copying first process context indicative of first processing, transmitting process context to second computer, causing first computer to start generation of first execution record, causing second computer to receive process context, determining, from first execution record, whether first processing should be migrated, if it is determined that first processing should postpone being migrated, finishing generation of first execution record, starting generation of second execution record, transmitting first execution record to second computer, reproducing process context, and determining, from second execution record, whether first processing should be migrated, after reproducing of process context is finished in the second computer.

Abstract: A task allocation method in a multiprocessor system having a first processor with a first instruction set and a second processor with a second instruction set. A task is allocated to either of the first processor or the second processor. The task corresponds to a program having an execution efficiency. The program includes a program module described by either of the first instruction set or the second instruction set. In the method, a task that corresponds to a program module described by the first instruction set is allocated to the first processor. It is determined whether or not the execution efficiency of the program is improved if a destination allocated for the task is changed from the first processor to the second processor. If the execution efficiency of the program is improved, the destination allocated for the task is changed to the second processor.

Abstract: A data management system capable of realizing improved flexibility, independency and expandability together is disclosed. The data management system is formed by a memory unit configured to store a plurality of data operation modules for operating data which have different operation functions, and an operation unit configured to read out data requested by the application program from the data storage system, select those data operation modules that should carry out the operations with respect to the data such that the data will be in compliance with a data model suitable for the processing that the application program wishes to carry out, from the plurality of data operation modules, such that the data to which the operations are applied by selected data operation modules are given to the application program.

Abstract: A server device and a communication connection scheme capable of expanding the memory bandwidth and thereby expanding the power to transmit Web data to the network are disclosed. Network cards are detachably attached to a host machine (main machine). Each network card contains a processor, a memory, and a network interface unit, where data are transmitted to the network from a memory on the network card and the memory bandwidth expansion is realized by the presence of a plurality of network cards. In addition, using a memory of the network card as a cache, the load on the host machine is reduced by transmitting data from this memory to the network when the data exists on the memory and a certain condition is satisfied.

Abstract: A server device and a communication connection scheme capable of expanding the memory bandwidth and thereby expanding the power to transmit Web data to the network are disclosed. Network cards are detachably attached to a host machine (main machine). Each network card contains a processor, a memory, and a network interface unit, where data are transmitted to the network from a memory on the network card and the memory bandwidth expansion is realized by the presence of a plurality of network cards. In addition, using a memory of the network card as a cache, the load on the host machine is reduced by transmitting data from this memory to the network when the data exists on the memory and a certain condition is satisfied.

Abstract: A storage device for which restoration of data is possible without the need for excess equipment includes mirrored storage units for online use and for backup, and is capable of performing a data backup while continuing input and output of data. The storage device is further provided with an update data storage unit for storing update data. According to the storage device, even if the information stored in a storage unit for online use is not capable of being read because of a fault in the storage unit, it is possible to restore the data in the backup storage unit to the state that existed in the storage unit for online use immediately before the fault by applying the update data to the information stored in the storage device for backup.

Abstract: A transaction processing system capable of easily and efficiently realizing the file update processing by a plurality of transactions operating in parallel as well as the recovery processing at a time of a fault occurrence is disclosed. In the transaction processing system, a plurality of transactions that carry out update processing with respect to one file read out onto a buffer region are executed, and that one file is written into a stable memory device at a time of commit of one transaction among the plurality of transactions, where that one file contains a content of committed updates made by that one transaction and a content of non-committed updates made by other non-committed transactions, and information for cancelling the non-committed updates.

Abstract: In a multimedia data retrieval device, each one of a plurality of multimedia data is managed in relation to time information and/or location information indicating a time and/or a location at which each multimedia data is created. Then, the time information and/or the location information corresponding to a retrieval request are obtained upon receiving the retrieval request specified by using event names, and multimedia data are retrieved from the plurality of multimedia data according to the obtained time information and/or location information.

Abstract: A flexible circuit board includes: an insulative tape having a pair of long sides and a pair of short sides; a driving IC mounted on the insulative tape; an input terminal for receiving data signals and control signals to be sent to the driving IC; a first output terminal for outputting a signal from the driving IC; a second output terminal for outputting at least some of the data signals and control signals; and first and second power signal terminals for supplying a voltage to the driving IC, wherein the input terminal, the first output terminal, and the second output terminal are provided on one of the pair of long sides, the first power signal terminal being provided on one of the pair of short sides, and the second power signal terminal being provided on the other one of the pair of short sides.

Abstract: A transaction processing system capable of easily and efficiently realizing the file update processing by a plurality of transactions operating in parallel as well as the recovery processing at a time of a fault occurrence is disclosed. In the transaction processing system, a plurality of transactions that carry out update processing with respect to one file read out onto a buffer region are executed, and that one file is written into a stable memory device at a time of commit of one transaction among the plurality of transactions, where that one file contains a content of committed updates made by that one transaction and a content of non-committed updates made by other non-committed transactions, and information for cancelling the non-committed updates.

Abstract: An intermediary server apparatus relays an information readout request from a terminal to an origin server, and returns information provided by the origin server to the terminal. The intermediary server apparatus previously assigns a first user ID to a user to discriminate each user. The origin server assigns a second user ID to the user to identify the information readout request. In the intermediary server apparatus, a memory correspondingly stores the first user ID and the second user ID. A communication unit retrieves the second user ID corresponding to the first user ID from said memory in case of receiving the information readout request including the first user ID from the terminal, and sends the information readout request including the second user ID to the origin server.

Abstract: A server device is formed by a plurality of network interface processors connected to a network, each network interface processor having a network interface local memory functioning as a cache memory for storing a part of server data and a network interface local processor, at least one storage interface processor connected with a storage device for storing the server data, and a connection network for connecting the network interface processors and the storage interface processor.

Abstract: A data allocation control method is applicable to a data recording apparatus for writing and/or reading data to/from a recording surface of a disciform recording medium. In this method, data to be recorded on the recording surface is divided into a plurality of data blocks to be consecutively dealt with. Next, allocation information for designating each location of the plurality of data blocks is generated such that a second data block next to a first data block included in the plurality of data blocks is located to keep a predetermined interval from a location of the first data block.

Abstract: A data allocation control method is applicable to a data recording apparatus for writing and/or reading data to/from a recording surface of a disciform recording medium. In this method, data to be recorded on the recording surface is divided into a plurality of data blocks to be consecutively dealt with. Next, allocation information for designating each location of the plurality of data blocks is generated such that a second data block next to a first data block included in the plurality of data blocks is located to keep a predetermined interval from a location of the first data block.

Abstract: A cooling structure around the output shaft of an L-shaped vertical gas turbine, for cooling the output shaft effectively by a natural ventilation. A gas generator 5 is arranged horizontally whereas an output turbine 1 is arranged vertically, and a pump or the like is driven by an output shaft 3. A cylinder 20 is fitted in a space 12 between the output shaft 3 and a cylindrical casing 13 and is fixed at a cylindrical flange 20a. Cooling air 30 is caused to flow upward from between the cylinder 20 and the output shaft 3 by the ejector effect of an exhaust gas from below a baseplate 8 and by the vacuum in the casing and then to flow downward from the upper end of the cylinder 20 between the cylinder 20 and the cylindrical casing 13, so that it flows out from the lower portion into the package. The output shaft of the L-shaped vertical type gas turbine having a compact narrow space is effectively cooled therearound by the natural ventilation without providing any fan or the like.