JPH10326231A - Distributed network computing system and information exchanging device used for the same system and method therefor and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an applied service corresponding to the processing capability of a terminal in a network environment in which each kind of terminal is present, to provide an applied service corresponding to the communication capability of communication infrastructure even when plural communication infrastructures coexist, and to provide a system in which data re-transmission can be efficiently attained. SOLUTION: A server computer 1 is provided with an information exchanging device 10, and service information offered as an applied service is information converted into a prescribed format based on the attribute of terminal information, and transmitted. The applied service can be offered by absorbing the relative difference of the processing capabilities of each kind of terminal equipment 31, 41, and 51, and the applied service can be offered by absorbing the relative difference of the communication capabilities of communication networks 30, 40, and 50 by information-converting the service information into the prescribed format based on the attribute of the communication network with which the terminal equipment is connected. Also, at the time of data re-transmission due to a line error, a re-transmitting processing corresponding to the error classification is operated by a re-transmission managing part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed network computing system for connecting a plurality of terminal devices, and more particularly to a public network, a wired LAN (Local Area Network),
Multiple types of communication networks such as wireless LANs are mixed, and inventory management services and the like are provided for various terminal devices with different processing capabilities such as portable information terminals, personal computers (PCs), and portable PCs connected to these communication networks. Distributed network computing system for providing application services of various application software, an information exchange device used in the system, an information exchange method related to a data retransmission control method in information exchange, and a computer storing a program for implementing the method It relates to a readable storage medium.

[0002]

2. Description of the Related Art Conventionally, information processing by a computer is mainly performed by a centralized processing system using a plurality of terminals connected to one main computer. In contrast, a distributed processing system is configured so that multiple computers are connected via a network or the like, share the resources owned by each computer, and can perform efficient processing. An environment for distributed processing of various application software is referred to as a distributed computing environment.

In a network environment that realizes distributed computing, a user does not need to be conscious of where programs and data are specially located. Logically, the entire network appears as if it were a single computer, so that the user can use necessary information and functions from his own operation environment.

[0004]

By the way, in a network environment as described above, when considering a system for providing each terminal device with an application service such as an application software such as an inventory management service, a terminal device used by a user is considered. Each has a difference in processing capacity (this is called a terminal attribute and includes a CPU capability, a display screen size, a memory capacity, and the like). In order to absorb / adjust the difference, the terminal side or the Artificial information manipulation is required on the server side.

Further, each terminal device is connected to, for example, a public network or a wired or wireless LAN (Local Area Net).
work), each uses a different communication network. Therefore, there is a relative difference in data transmission speed, transmission amount, quality, and the like as a communication infrastructure for each communication network.

Generally, when the processing capability of a personal computer (PC) as a general-purpose device is set to an upper level, a portable information terminal is set to a middle level, and other terminal devices are set to a lower level. In addition, as a communication infrastructure, a wired or wireless LAN is at an upper level in terms of both transmission amount and quality.
SDN (Integrated Services Digital Network) is at the middle level, and analog wired, analog or digital wireless is at the lower level.

[0007] In a network environment, there is such a difference in processing capability of each terminal device and a difference in communication capability as a communication infrastructure. Therefore, in such an environment, there is a problem that it is extremely difficult to provide application services commonly to various terminal devices.

Further, in order to provide a service by absorbing such a difference in processing capability between terminal devices and a difference in communication capability as a communication infrastructure, complicated processing is required. There was a problem that a large server computer having a corresponding capacity was required.

[0009] Further, in business establishments such as companies and factories, it is necessary to install a switch for exchanging connection between extension telephones in the premises and between subscriber telephone lines (office lines) and extension telephones. Generally, private branch exchanges or private branch exchanges are PBX
(Private Branch Exchange), and in particular, a digital private branch exchange is called a digital PBX.

The digital PBX converts an audio signal into a digital signal and processes the digital signal. Therefore, OA equipment such as a personal computer, a word processor, and a computer used in the premises are connected to the digital PBX, and the data and the audio are converted into one. Original and efficient processing is possible. Further, by adding various network functions to the digital PBX, a wide area network can be constructed from the intra-office communication network.

When constructing a LAN for the first time,
In many cases, several computer devices are connected to one Ethernet cable (coaxial cable).
However, as networking advances and the number of connected devices increases, the physical length of the cable is reached. Tools that extend the network physically and logically beyond this limitation include routers and the like.

The router can form a network having a closed loop, and determines only an optimal route and passes only necessary packets (routing). The router determines based on the network number in the Internet protocol (network layer), and then determines based on the node number to determine the final destination.

The Internet protocol in the network layer has a different definition method depending on the protocol such as TCP / IP and OSI, so that the router basically supports one type of protocol. In other words, it is possible to select only a network of a specific protocol from a backbone network in which a plurality of protocols coexist, and this is effective where a reduction in load factor due to speed is required from Ethernet to a line.

However, on a network connection device such as an exchange or a router, a service is provided by absorbing the difference in processing capability of each terminal device and the difference in communication capability as a communication infrastructure as described above. Such a system has not been proposed so far.

Furthermore, the attributes of terminal devices used in the system are generally determined at the time of system design, and application services are generally provided according to the attributes.

For this reason, there is a major problem that even if a terminal device having a new attribute is developed, it cannot be easily introduced into the system and used.

In a network computing environment, the original data of a server that manages the original data is often changed.

[0018] In such a case, the terminal device connected to the server cannot understand the fact of the above change unless it is performed by artificial information manipulation, and cannot cope with the change, which is extremely inconvenient.

In a network computing environment as described above, a line error may occur in data transfer. For example, a line error in data transfer using a wired LAN is often caused by packet collision on the line.

On the other hand, in an environment using a mobile communication network or the like, when the partner terminal device is in use (during a call) or the power of the partner terminal device is off. However, line errors sometimes occurred.

Therefore, the present invention has been made in view of the above circumstances, and in a network environment in which various terminal devices exist, a large-scale server computer is not required, and the processing capability of each terminal device is adjusted. Application services can be provided, and even when multiple communication infrastructures coexist, application services can be provided in accordance with the communication capacity of the communication infrastructure. Provided is a distributed network computing system capable of high data retransmission, an information exchange device used in the system, an information exchange method related to a data retransmission control method in information exchange, and a computer-readable storage medium storing the method. The purpose is to do.

Further, according to the present invention, in a network environment where each terminal device exists, a difference in processing capability between terminal devices and a difference in communication capability as a communication infrastructure on a network connection device such as an exchange or a router. Network computing system that can provide service by absorbing / adjusting data and efficiently and highly reliable data retransmission even if a line error occurs, and an information exchange device and information exchange device used in the system. An object of the present invention is to provide an information exchange method related to a data retransmission control method and a computer-readable storage medium storing a program for realizing the method.

[0023]

[Means for Solving the Problems]

(1) The present invention provides an information processing device that provides application services such as various application software, a plurality of types of terminal devices that receive application services from the information processing device, the information processing device, and the terminal devices. In a distributed network computing system comprising a communication network connecting the information processing apparatus and the information processing apparatus.

This information exchange apparatus has terminal attribute information management means for managing terminal attribute information indicating the processing capability of each of the terminal devices, and acquires terminal attribute information of a terminal device to be a communication partner from the terminal attribute information management means. Conversion means for converting service information provided as an applied service into a specific format based on the terminal attribute information; and communication means for transmitting the service information converted by the conversion means via the communication network. Means for determining the type of the error when a line error occurs when the service information is transmitted to the terminal device by the communication means, and retransmitting the service information based on the error type. Is done.

According to such a configuration, when a plurality of types of terminal devices exist on the network, service information provided by the information processing device is exchanged according to the processing capability of each terminal device. The information exchange in this case means that the processing capability of the terminal
To change the format of some information. For example, when transmitting image information (image), if the partner terminal device does not have image processing capability, the image information is converted into symbol information and transmitted.

As a result, the terminal device is excellent in portability, but relatively inferior in information processing capability (computation capability) and screen display / user interface providing capability as compared with other terminal devices (PC, etc.). (PDA or the like) can be used to construct a distributed network computing system, and the terminal can receive the same services as other terminal devices, even if the format changes. Moreover, if a line error occurs in data transfer,
Since the type of error is determined and the service information is retransmitted based on the type of error, the reliability of data transfer and the efficiency of transmission can be improved.

(2) The present invention relates to an information processing apparatus that provides application services such as various application software, a terminal device that receives application services from the information processing apparatus, and the information processing apparatus and the terminal device. In a distributed network computing system including a plurality of types of communication networks to be connected, an information exchange device is provided in the information processing device.

This information exchange apparatus includes a communication infrastructure information management means for managing communication infrastructure information indicating the communication capability of each communication network, and a communication device to which a terminal device as a communication partner is connected from the communication infrastructure information management means. A conversion unit for acquiring communication infrastructure information of the network and converting service information provided as an applied service into a specific format based on the communication infrastructure information; and converting the service information converted by the conversion unit to the communication network. A communication unit that transmits the service information to the terminal device, and when a line error occurs, determines the type of the error and resends the service information based on the error type. Means.

According to such a configuration, when a plurality of types of communication networks are mixed on a network, service information provided by the information processing device is exchanged in a format corresponding to the communication capability of each communication network. . The information exchange in this case is to change the format of certain information in accordance with the communication capability of the communication network to which the terminal device as the communication partner is connected. For example, if the data transmission capacity of the communication network is high, the data is transmitted after being encrypted.If the data transmission capacity is low, binary data is converted to text data, format information such as centering is changed to blank characters, fonts are changed. Send after reducing the transmission data size by ignoring information. When the data transfer capability is low, the data may be compressed and transmitted if the terminal has an optimal computing capability.

As a result, even in a system in which various types of communication infrastructures coexist, it is possible to absorb the relative differences in the data transmission speed / amount / quality of the communication infrastructures, and the format is changed on the terminal side. Can also receive services similar to those of other terminal devices. Moreover, when a line error occurs in the data transfer, the type of the error is determined, and the service information is retransmitted based on the error type, so that the reliability of the data transfer can be improved.

(3) The present invention relates to an information processing apparatus for providing application services such as various kinds of application software, a plurality of types of terminal equipment receiving application services from the information processing apparatus, In a distributed network computing system including a plurality of types of communication networks connecting terminal devices, an information exchange device is provided in the information processing device.

This information exchange apparatus includes terminal attribute information management means for managing terminal attribute information indicating the processing capability of each terminal device, and communication infrastructure information management for managing communication infrastructure information indicating the communication capability of each communication network. Means, and obtains terminal attribute information of a terminal device to be a communication partner from the terminal attribute information management means, and obtains communication infrastructure information of a communication network to which the terminal device is connected from the communication infrastructure information management means, Conversion means for converting service information provided as an applied service into a specific format based on the terminal attribute information and the communication infrastructure information; and transmitting the service information converted by the conversion means via the communication network. A communication unit and, when the communication unit transmits the service information to the terminal device, a line error occurs. Configured and means for retransmitting processing the service information based on the error type as well as determine the type of chromatography.

According to such a configuration, when a plurality of types of terminal devices and a plurality of types of communication networks are present on the network, the service information provided by the information processing apparatus is used for the processing capability of each terminal device and each communication device. Information is exchanged in a format appropriate for the network. The information exchange in this case is to change the format of certain information according to the processing capability of a terminal device as a communication partner and the communication capability of a communication network to which the terminal device is connected. As a result, a terminal device (such as a PDA) that is excellent in portability but has relatively inferior information processing capability (computation capability) and screen display / user interface providing capability compared to other terminal devices (such as a PC) ) Can be used to construct a distributed network computing system, and the terminal can receive services similar to those of other terminal devices, even if the format changes. Furthermore, even in a system where various communication infrastructures are mixed, the data transmission speed / amount /
Relative differences in quality and the like can be absorbed, and the terminal can receive the same service as other terminal devices even if the format changes. Moreover, when a line error occurs in the data transfer, the type of the error is determined, and the service information is retransmitted based on the error type, so that the reliability of the data transfer can be improved.

(4) The present invention relates to an information processing apparatus that provides application services such as various application software, a terminal device that receives application services from the information processing apparatus, and the information processing apparatus and the terminal device. In a distributed network computing system including a communication network to be connected, an information exchange device is provided in network connection means for interconnecting networks.

This information exchange apparatus obtains terminal attribute information managing means for managing terminal attribute information indicating the processing capability of the terminal equipment, and acquires terminal attribute information of a terminal equipment to be a communication partner from the terminal attribute information managing means. Conversion means for converting service information provided as an applied service into a specific format based on the terminal attribute information, and communication means for transmitting the service information converted by the conversion means via the communication network; Means for determining the type of the error when a line error occurs when the service information is transmitted to the terminal device by the communication means, and retransmitting the service information based on the error type. You.

According to such a configuration, when a plurality of types of terminal devices exist on the network, service information provided by the information processing device is exchanged according to the processing capability of each terminal device. The information exchange in this case means that the processing capability of the terminal
To change the format of some information. For example, when transmitting image information (image), if the partner terminal device does not have image processing capability, the image information is converted into symbol information and transmitted.

As a result, the terminal device is excellent in portability, but relatively inferior in information processing capability (computation capability) and screen display / user interface providing capability as compared with other terminal devices (PC, etc.). Can be used to construct a distributed network computing system, and the terminal can receive services similar to those of other terminal devices, even if the format changes.

In particular, by performing such information exchange by network connection means (such as a circuit switch or a router), information can be exchanged in a final form near the terminal equipment of the user. That is, when a network is created from each subnetwork, information can be exchanged in a format suitable for the subnetwork. In addition, when a line error occurs in data transfer, the type of the error is determined, and the service information is retransmitted based on the error type. Therefore, the reliability of data transfer and the efficiency of transmission can be improved. .

(5) The present invention relates to an information processing apparatus that provides application services such as various application software, a terminal device that receives application services from the information processing apparatus, and the information processing apparatus and the terminal device. In a distributed network computing system including a communication network to be connected, an information exchange device is provided in network connection means for interconnecting networks.

This information exchange apparatus includes a communication infrastructure information management means for managing communication infrastructure information indicating the communication capability of the communication network, and a communication network to which a terminal device as a communication partner is connected from the communication infrastructure information management means. Conversion means for obtaining communication infrastructure information of the application service, and converting the service information provided as an applied service into a specific format based on the communication infrastructure information, and converting the service information converted by the conversion means through the communication network. Means for transmitting the service information to the terminal device by the communication means, means for determining the type of the error when a line error occurs, and retransmitting the service information based on the error type It comprises.

According to such a configuration, when a plurality of types of communication networks are mixed on a network, service information provided by the information processing apparatus is exchanged in a format corresponding to the communication capability of each communication network. . The information exchange in this case is to change the format of certain information in accordance with the communication capability of the communication network to which the terminal device as the communication partner is connected. For example, if the data transmission capacity of the communication network is high, the data is transmitted after being encrypted.If the data transmission capacity is low, binary data is converted to text data, format information such as centering is changed to blank characters, fonts are changed. Send after changing the transmission data size by ignoring the information. Note that when the data transmission capability is low, the data may be compressed and transmitted if the terminal has an appropriate operation capability.

As a result, even in a system in which various types of communication infrastructures are mixed, it is possible to absorb a relative difference in the data transmission speed / amount / quality of the communication infrastructures, and the format is changed on the terminal side. Can also receive services similar to those of other terminal devices.

In particular, by performing such information exchange by means of network connection means (such as a circuit switch or a router), information can be exchanged in a final form near the terminal equipment of the user. That is, when a network is created from each subnetwork, information can be exchanged in a format suitable for the subnetwork. Moreover, when a line error occurs in the data transfer, the type of the error is determined, and the service information is retransmitted based on the error type, so that the reliability of the data transfer can be improved.

(6) The present invention provides an information processing apparatus for providing application services such as various application software, a terminal device for receiving application services from the information processing apparatus, the information processing apparatus and the terminal device. In a distributed network computing system comprising a communication network for connecting networks, an information exchange device is provided in network connection means for interconnecting networks.

This information exchange apparatus includes terminal attribute information management means for managing terminal attribute information indicating the processing capability of the terminal device, and communication infrastructure information management means for managing communication infrastructure information indicating the communication capability of the communication network. Obtaining terminal attribute information of a terminal device to be a communication partner from the terminal attribute information management means, and obtaining communication infrastructure information of a communication network to which the terminal device is connected from the communication infrastructure information management means, Conversion means for converting the service information provided as a specific format based on the terminal attribute information and the communication infrastructure information, and communication means for transmitting the service information converted by the conversion means via the communication network When a line error occurs when the service information is transmitted to the terminal device by the communication means, Configured and means for retransmitting processing the service information based on the error type as well as determine the type.

According to such a configuration, when a plurality of types of terminal devices and a plurality of types of communication networks are present on the network, the service information provided by the information processing apparatus is used for the processing capability of each terminal device and each communication device. Information is exchanged in a format appropriate for the network. The information exchange in this case is to change the format of certain information according to the processing capability of a terminal device as a communication partner and the communication capability of a communication network to which the terminal device is connected. As a result, a terminal device (such as a PDA) that is excellent in portability, but relatively inferior in information processing capability (calculation capability) and screen display / user interface providing capability compared to other terminal devices (such as a PC). ) Can be used to construct a distributed network computing system, and the terminal can receive services similar to those of other terminal devices, even if the format changes. Furthermore, even in a system where various communication infrastructures are mixed, the data transmission speed / amount /
Relative differences in quality and the like can be absorbed, and the terminal can receive the same service as other terminal devices even if the format changes.

In particular, by performing such information exchange by network connection means (such as a circuit switch or a router), information can be exchanged in a final format near the terminal equipment of the user. That is, when a network is formed from each subnetwork, information can be exchanged in a format suitable for the subnetwork. Moreover, when a line error occurs in the data transfer, the type of the error is determined, and the service information is retransmitted based on the error type, so that the reliability of the data transfer can be improved.

(7) The present invention provides a first information processing apparatus that provides an application service, a terminal device that receives provision of the application service from the first information processing apparatus, the first information processing apparatus, In a distributed network computing system comprising a communication network connecting a terminal device, a processing capability of the terminal device is provided to a second information processing device connected to the communication network separately from the first information processing device. The terminal attribute information management means for managing the terminal attribute information shown is provided.

[0049] The first information processing apparatus includes: a search means for searching a second information processing apparatus having the terminal attribute information management means from one or a plurality of second information processing apparatuses;
For the second information processing apparatus searched by the search means, the terminal attribute information of the terminal device as the communication partner is obtained from the terminal attribute information management means, and the service information provided as an applied service is obtained by the terminal. A conversion unit for converting the service information converted by the conversion unit into a specific format based on the attribute information; a communication unit for transmitting the service information converted by the conversion unit via the communication network; Means for determining the type of the error when a line error occurs and retransmitting the service information based on the error type.

According to such a configuration, when a plurality of types of terminal devices exist on the network, the service information provided by the first information processing apparatus (the main server computer for performing the application service) is transmitted to each terminal. Information is exchanged according to the processing capacity of the device. The information exchange in this case is to change the format of certain information in accordance with the processing capability of the terminal device as the communication partner. For example, when transmitting image information (image), if the partner terminal device does not have image processing capability, the image information is converted into symbol information and transmitted.

As a result, the terminal device is excellent in portability, but relatively inferior in information processing capability (computation capability) and screen display / user interface providing capability as compared with other terminal devices (PC, etc.). (PDA (Personal
Digital Assistants) can be used to construct a distributed network computing system, and the terminal can receive the same services as other terminal devices, even if the format changes.

Further, by distributing the function of managing terminal attribute information required for information exchange to the second information processing device (sub server computer), the processing load on the first information processing device can be reduced. And a system resistant to obstacles can be realized. Moreover, when a line error occurs in data transfer, the type of the error is determined,
Since the service information is retransmitted based on the error type, the reliability of data transfer can be improved.

(8) The present invention provides a first information processing apparatus for providing an application service, a terminal device for receiving the application service from the first information processing apparatus, the first information processing apparatus, In a distributed network computing system including a communication network connecting terminal devices, a communication capability of the communication network is provided to a second information processing device connected to the communication network separately from the first information processing device. Communication infrastructure information management means for managing the indicated communication infrastructure information.

[0054] The first information processing apparatus comprises: a search means for searching for a second information processing apparatus having the communication infrastructure information management means from one or a plurality of second information processing apparatuses; With respect to the second information processing apparatus searched by the above, the communication infrastructure information of the terminal device as the communication partner is obtained from the communication infrastructure information management means, and the service information provided as an applied service is included in the communication infrastructure information. A conversion unit for converting the service information into a specific format based on the service information, a communication unit for transmitting the service information converted by the conversion unit via the communication network, and the service information transmitted to the terminal device by the communication unit. Means for judging the type of error when a line error occurs and retransmitting the service information based on the error type. Composed of Te.

According to such a configuration, when a plurality of types of communication networks are mixed on a network, the service information provided by the first information processing apparatus (the main server computer for performing the application service) is transmitted to each communication network. Information is exchanged in a format corresponding to the communication capability of the network. The information exchange in this case is to change the format of certain information in accordance with the communication capability of the communication network to which the terminal device as the communication partner is connected. For example, if the data transmission capacity of the communication network is high, the data is sent after being compressed or encrypted.If the data transmission capacity is low, binary data is converted to text data, or format information such as centering is changed to blank characters. Change the transmission data size by, for example, ignoring font information, and then send. When the data transmission capacity is low, the data may be compressed and sent if the terminal has a suitable arithmetic capacity.

As a result, even in a system in which various types of communication infrastructures are mixed, it is possible to absorb the relative differences in the data transmission speed / amount / quality of the communication infrastructures. Can also receive services similar to those of other terminal devices.

Further, by distributing the function of managing communication infrastructure information required for information exchange in the second information processing device (sub server computer), the processing load on the first information processing device can be reduced. And a system resistant to obstacles can be realized. Moreover, when a line error occurs in the data transfer, the type of the error is determined, and the service information is retransmitted based on the error type, so that the reliability of the data transfer can be improved.

(9) The present invention provides a first information processing apparatus for providing an application service, a terminal device for receiving the application service from the first information processing apparatus, the first information processing apparatus, In a distributed network computing system comprising a communication network connecting a terminal device, a processing capability of the terminal device is provided to a second information processing device connected to the communication network separately from the first information processing device. Terminal attribute information management means for managing terminal attribute information shown in FIG. 1 and communication infrastructure information management means for managing communication infrastructure information indicating communication capability of the communication network.

[0059] The first information processing apparatus searches for a second information processing apparatus having the terminal attribute information managing means and the communication infrastructure information managing means from one or a plurality of second information processing apparatuses. Search means and the second information processing apparatus searched by the search means,
A service provided as an applied service by obtaining terminal attribute information of a terminal device as a communication partner from the terminal attribute information management unit and obtaining communication infrastructure information of a terminal device as a communication partner from the communication infrastructure information management unit. Conversion means for converting information into a specific format based on the terminal attribute information and the communication infrastructure information; communication means for transmitting the service information converted by the conversion means via the communication network; and communication means When a line error occurs when the service information is transmitted to the terminal device, means for determining the type of the error and retransmitting the service information based on the error type is provided.

According to such a configuration, when a plurality of types of terminal devices and a plurality of types of communication networks exist on a network, service information provided by an information processing apparatus (a main server computer for performing an applied service) is provided. Is exchanged in a format corresponding to the processing capacity of each terminal device and each communication network. The information exchange in this case is to change the format of certain information according to the processing capability of a terminal device as a communication partner and the communication capability of a communication network to which the terminal device is connected.

As a result, the terminal device is excellent in portability, but relatively inferior in information processing capability (computation capability) and screen display / user interface providing capability as compared with other terminal devices (PC, etc.). (PDA or the like) can be used to construct a distributed network computing system, and the terminal can receive the same services as other terminal devices, even if the format changes. Further, even in a system in which various communication infrastructures are mixed, it is possible to absorb a relative difference in data transmission speed / amount / quality and the like of the communication infrastructure. It will be possible to receive services similar to those of terminal devices.

Further, the function of managing terminal attribute information and the function of managing communication infrastructure information required for information exchange are distributed and provided to the second information processing device (sub server computer). Can be reduced, and a system resistant to failure can be realized. Moreover, if a line error occurs in data transfer,
Since the type of error is determined and the service information is retransmitted based on the type of error, the reliability of data transfer can be improved.

[0063]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing a configuration of a distributed network computing system according to one embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a server computer, which comprises a general-purpose computer having a high processing capability.

The server computer 1 is installed in an office, has an application service unit 20, and provides various application services (application software) such as an inventory management service to each terminal device. The service provided by the application service unit 20 can use an image reader 43 and a printer 42 described later as input / output devices.

The server computer 1 has a public network 30 and a wired L
Three types of communication networks (hereinafter, referred to as communication infrastructure) having different communication capabilities such as an AN (Local Area Network) 40 and a wireless LAN 50 are connected.

In the public network 30, a portable information terminal 31, a portable telephone 32, a pager (pager: pager) 3
3. A facsimile machine (FAX) 34 is connected. The public network 30 includes an analog communication network and a digital communication network. The analog communication network generally has a lower data transmission amount and reliability than a digital communication network. The portable information terminal 31 is connected to the server computer 1 via a mobile communication network included in the public network 30. The mobile communication has not only low data transmission amount but also poor quality such as line disconnection due to movement characteristics and occurrence of errors during data transmission. In the present embodiment, the portable information terminal 31 is an information device that emphasizes portability, has a low screen size / control function, and can use only text information. It is also assumed that the processing capability of the CPU is lower than that of a personal computer (PC), and the CPU does not hold an external storage device.

A personal computer (PC) 41, a printer 42, an image reader 43 are connected to the wired LAN 40.
Is connected. In general, the wired LAN 40 has a larger transmission data amount and a stable line quality as compared with wireless communication such as a mobile phone service. At present, distributed network application services for general offices are often designed for the wired LAN 40.

The printer 42 and the image reader 43 are installed as output devices / input devices in an office building. For example, in the inventory management service, the image reader 43
Reads the inventory slip and stores the data in the wired LAN 40
Is sent to the server computer 1 via the server 42, and the totalized result is output by the printer 42.

A portable PC 51 is connected to the wireless LAN 50. Although the communication capabilities of the wireless LAN 50 and the wired LAN 40 are comparable, the processing capability of the portable PC 51 connected to the wireless LAN 50 is inferior to the processing capability of the PC 41 connected to the wired LAN 40.

Although not shown, a server computer different from the server computer 1 is also connected to the network environment.

As described above, in the network environment, there is a difference in processing capability between terminal devices and a difference in communication capability between communication infrastructures.

Therefore, in the present embodiment, the server computer 1
Is provided with an information exchange device 10 to absorb / adjust attributes of various terminal devices and communication infrastructure (difference in information processing capability, difference in communication capability) existing on the network.

The information exchange apparatus 10 includes an information exchange processing unit 11, a terminal information management unit 12, a user interface information management unit 13 for application services, and a user information management unit 1.
4. It comprises a communication infrastructure information management unit 15.

Hereinafter, the configuration of each unit of the information exchange apparatus 10 will be described with reference to FIGS.

FIG. 2 is a block diagram showing the internal configuration of the information exchange processing unit 11. The information exchange processing unit 11
It is responsible for a series of processes for exchanging information as applied services into other information in accordance with the attributes of each terminal device and communication infrastructure. This information exchange processing unit 11
Are the information exchange device internal communication interface unit 111, terminal type determination unit 112, information exchange execution unit 113, server user data information management unit 114, compression / encryption processing unit 11
5, information exchange device external communication interface unit 116, data change management unit 117, and retransmission management unit (not shown)
It comprises a priority management unit and a terminal monitoring unit.

Information exchange device internal communication interface 1
Reference numeral 11 denotes an interface for communicating with other components in the information exchange device 10. Terminal type determination unit 112
Determines the type of terminal device of the user (for example, a large-screen desktop PC, a portable small-screen subnotebook PC, a portable information terminal, etc.). The information exchange execution unit 113 performs an actual information exchange process (decomposition, search,
Extraction, rework). The server user data information management unit 114 manages user data information registered in the server computer 1. Compression / encryption processing unit 115
Performs communication data compression and encryption processing as necessary when communication is performed from the inside of the information exchange apparatus 10 to the outside. Information exchange device external communication interface unit 1
Reference numeral 16 denotes an interface for performing communication from the information exchange apparatus 10 to the outside. Data change management unit 117
Controls the data update information such as document data / user data and the like, which is managed and stored in the server computer 1 using a structured language, the replacement data of image data with symbol information, and the transfer processing of the data to the outside. I do.

Further, the retransmission management unit performs retransmission processing / to be described later.
Data transfer to terminal /
When data transmission fails, retransmission control of data is performed. That is,
This retransmission management unit indicates that the destination terminal is using the line (communicating).
In the case of, the retransmission interval is controlled after a few minutes, and in the case of retransmission processing due to packet drop due to packet communication, information exchange (reprocessing) is performed under the control of the information exchange execution unit 113 and the compression / encryption processing unit 115. Etc.) / The data size is reduced by data compression to shorten the data transfer time. The priority management unit determines the priority / urgency of the communication data and manages and controls the communication data transmission method based on the determination result. In addition, the information exchange processing unit 11 is provided with a terminal monitoring unit having a function of coping with continuous provision of service even if a problem occurs on the terminal side by monitoring the state of the terminal. Have been.

FIG. 3 is a block diagram showing the internal configuration of the terminal information management unit 12. The terminal information management unit 12 manages attribute information indicating a processing capability such as a CPU capability, a display capability, and a memory capacity for each terminal device connected to the server computer 1. The terminal information management unit 12 includes an information exchange device internal communication interface unit 121, a terminal attribute negotiation unit 122, and a terminal attribute information management execution unit 123.

Information exchange device internal communication interface 1
Reference numeral 21 denotes an interface for communicating with other components in the information exchange device 10. Terminal attribute negotiation unit 122
Is an interface when the terminal information management unit 12 performs various exchanges / negotiations on terminal attributes with terminal devices. The terminal attribute information management execution unit 123 is an interface that manages / operates a terminal attribute table in which terminal attribute information for each terminal device is registered.

FIG. 4 shows a user interface information management unit 1.
FIG. 3 is a block diagram showing an internal configuration of the third embodiment. When a user uses an application service, an operation method such as operating an icon on a terminal device, operating a button, or inputting a command differs for each terminal device. The user interface information management unit 13 manages user interface information indicating an operation method unique to each terminal device when performing such an applied service. The user interface information management unit 13 includes an information exchange device internal communication interface unit 131 and an application service interface table management unit 132.

Information exchange device internal communication interface 1
Reference numeral 31 denotes an interface for communicating with other components in the information exchange device 10. The application service interface table management unit 132 manages information on a user interface for each application service.

FIG. 5 is a block diagram showing the internal configuration of the user information management unit 14. For example, taking the screen display as an example,
When the user uses the application service, there are various preferences depending on the user, such as moving a display such as a graph on the terminal device to an easily viewable position. The user information management unit 14 manages user information indicating an operation method unique to each user, including a screen display preference when using such an applied service. The user information management unit 14 includes an information exchange device internal communication interface unit 141, a user information table management unit 142, and a user authentication unit 143.

Information exchange device internal communication interface 1
Reference numeral 41 denotes an interface for communicating with other components in the information exchange device 10. The user information table management unit 142 manages user names and related information such as users and terminal names / addresses / communications infrastructure types. The user authentication unit 143 operates when the information exchange device 10 requires user authentication.

FIG. 6 is a block diagram showing the internal configuration of the communication infrastructure information management unit 15. The communication infrastructure information management unit 15 manages attribute information indicating communication capability of each communication network, such as data transmission speed, transmission amount, and quality. The communication infrastructure information management unit 15 includes an information exchange device internal communication interface unit 151, a communication infrastructure feature management unit 152, and a retransmission processing / line disconnection correspondence management unit 153.

Information exchange device internal communication interface unit 1
Reference numeral 51 denotes an interface for communicating with other components in the information exchange device 10. The communication infrastructure feature management unit 152 manages feature information such as transmission quality and transmission speed as a communication infrastructure. The retransmission processing / line disconnection correspondence management unit 153 implements retransmission processing and a processing function at the time of line disconnection according to the communication infrastructure used by the user.

Next, the operation of this embodiment will be described.

First, the processing operation of a general application service when the information exchange apparatus 10 is not used will be described with reference to an inventory management service as an example.

FIG. 7 is a flowchart showing the processing operation of a general application service.

The server computer 1 receives an input from the image reader 43 via the wired LAN 40 and transfers information such as a stock slip to the application service unit 20 (step A11). In the server computer 1, the application service unit 2
0 extracts the required stock amount from the slip information read by the image reader 43 and, for example, displays the content on the display screen of the PC 41 for the user using the PC 41 (step A12). .

With this display, the user can access the server computer 1
The information processing such as updating the stock amount to the latest information is performed using the PC 41 connected to the PC (step A13). Upon receiving the correction information from the user, the application service unit 20 outputs a new inventory slip reflecting the result to the printer 42 (step A14). Thus, the user can obtain a new inventory slip from the output result of the printer 42.

In such a general application service, it is assumed that the user can use the PC 41, the printer 42, and the image reader 43 at hand. In the example of FIG.
The C41, the printer 42, and the image reader 43 are connected to the server computer 1 via a wired LAN 40 in the office.

Next, a case where an application service is provided to a user who uses the portable information terminal 31 or the portable PC 51 outside the office will be described.

FIG. 8 is a flowchart showing a processing operation of an applied service when the information exchange apparatus 10 is used.
The information exchange device 10 is installed in the server computer 1 at an external interface of the application service unit 20.

First, the information exchange apparatus 10 receives information on a terminal device to be transmitted from the application service unit 20 (step B11). At this time, if the terminal device of the transmission destination is the PC 41 in the office, the information exchange device 10 is not required (to “not use” in step B12),
The server computer 1 executes the normal processing described in FIG. 7 (step B13).

On the other hand, when the transmission destination is the portable information terminal 31 or the portable PC 51 outside the office, the information exchange device 1
The routine enters the routine for executing the information exchange process using 0 (to "use" in step B12).

The information exchange device 10 acquires the terminal attribute information of the terminal device from the terminal information management unit 12 (step B).
14), information exchange (information exchange processing, terminal attribute absorption processing) of the information passed from the application service unit 20 based on the terminal attribute information (steps B15 and B16). The information exchange in this case refers to absorbing / adjusting terminal attributes by changing the format of certain information in accordance with the processing capability of the terminal device.

For example, when sending image information (image),
If the terminal device of the other party has no image processing capability, the image information is converted into symbol information and transmitted. As a result, the terminal can receive the same service as other terminal devices even if the format changes. When the information exchange according to the terminal attributes is performed in this way, the information exchange device 1
0 sends the converted information as service information to the terminal device (step B17).

Here, reading of the terminal attribute from the terminal attribute information management section 12 will be described. The terminal attributes include, for example, screen size, screen control information, types of data that can be displayed on the screen, and the like.

There are two methods for reading terminal attributes: (A) having a terminal attribute table in the terminal information management unit 12 and (B) obtaining terminal attribute information from terminal equipment.

In the present embodiment, the former method (A) is used when the terminal device is the portable information terminal 31. The latter method (B) is used when the terminal device is the portable PC 51. The selection of (A) / (B) is performed by the user information management unit 14, the correspondence between the user name, the terminal address, and the communication infrastructure is obtained from the user information table management unit 142, and the terminal attribute management execution unit 123 determines. I do. Terminal side CP
If the U capability is sufficient and the quality of the communication line is high,
The latter (B) method of negotiating terminal attributes with the terminal side is adopted.

In the method (B), a protocol for determining terminal attributes is determined between the terminal and the server (information exchange device 10). FIG. 9 shows the concept of the protocol sequence. As shown in this protocol sequence, the terminal side control code system (line feed code, tab, etc.)
The terminal and the server (the information exchange device 10) confirm the bitmap, the screen size, the available font type (including the corresponding language), and the like. Next, a method of information exchange will be described.

Information exchange is performed when the terminal has no display capability, when the information transmission capability of the communication infrastructure is poor, and when the server needs to perform quantitative / qualitative conversion of the information.

As information exchange, specifically, “conversion from binary data to text data”, “conversion from image information to symbol information”, “conversion from icon data to symbol information”, “conversion from audio information” Conversion to text information "and" Conversion from color image to monochrome image ".

The conversion of binary data into text data will be described. For example, in document creation application software used in a PC or the like, that is, word processing software, created document data is stored as binary data. Often. This is because it is necessary to save not only text data but also various attached information such as a document format and font.

However, generally, this binary data is
The data size is larger than simple text data.
Further, in order to display the binary data, the terminal side needs not only a text display capability but also various image display capabilities. Furthermore, since the screen size on the terminal side is often designed to be small with emphasis on portability, it is often necessary to display the document data after processing it on the server side.

In order to deal with such a problem, information exchange is effective. That is, the binary data is converted to text data and sent to the terminal device. As a result, the terminal can perform processing according to its own processing capability.

FIG. 10 shows the information exchange processing operation at this time.

FIG. 10 is a flowchart showing the processing operation of information exchange according to the terminal attribute.

If word processing software is taken as an example of an application service, the information exchange apparatus 10 first searches the server user data information management unit 114 for the location of document data.
It is checked in what format the document data is stored (step C11).

As a result, if the document data is binary data (Yes in step C12), the information exchange device 10
In the information exchange execution unit 113, the binary document data is subjected to component development (document decomposition) for each element such as text, format, font and the like (step C13).

Then, necessary information is searched and extracted from each component element (steps C14 and C1).
5) Reprocess the information into an information format adapted to the terminal screen (step C16).

The reprocessed information, that is, the service information of the word processing software whose information has been exchanged in accordance with the terminal, is provided to the terminal device by the information exchange device external communication interface unit 116.

The same applies to other information exchanges. For example, if the terminal has no image processing capability, the image part is converted into symbol text information, and the icon is converted into symbol text information. Further, if the terminal does not have the voice processing capability, the voice information is converted into text information and transmitted, so that a service corresponding to each processing capability can be provided.

As described above, when a plurality of types of terminal devices are present on the network, service information provided as an applied service is exchanged and transmitted in a format that matches the processing capability of each terminal device. Use a terminal device (PDA, etc.) that has excellent portability, but is relatively inferior to other terminal devices (PCs, etc.) in information processing ability (computing ability) and screen display / user interface providing ability. Thus, a distributed network computing system can be constructed, and the terminal can receive services similar to those of other terminal devices, even if the format changes.

It is to be noted that such information exchange may be performed in accordance with the operation method of each terminal device, independently of the processing capability of the terminal device itself.

That is, when the user uses the applied service, the operation method such as operating an icon, operating a button, or inputting a command on the terminal device differs for each terminal device. If such an operation method for each terminal device is registered in advance in the user interface information management unit 13 as user interface information, and information is exchanged based on the user interface information for each terminal device, The service can be provided by an operation method corresponding to each terminal device.

Information exchange may be performed according to the preference of a user who handles the terminal device.

That is, when the user uses the application service, the user prefers the display position depending on the user, such as moving the graph relation to the center on the terminal device or viewing the text at the same position. come. Such screen display preferences (screen display preference information) are registered in advance in the user information management unit 14 as user information, and information exchange is performed for each user based on the user information. If
The service can always be provided at the display position according to the user's preference.

Next, a case where information is exchanged according to the communication infrastructure will be described.

The information exchange device 10 includes a communication infrastructure feature management unit 152 in the communication infrastructure information management unit 15 and a user information table management unit 142 in the user information management unit 14.
As a result, information on the communication infrastructure used by terminal users is grasped. In addition, data retransmission control is performed based on the information.

FIG. 11 shows the information exchange processing operation at this time.

FIG. 11 is a flowchart showing the processing operation of information exchange according to the communication infrastructure.

In the information exchange processing operation shown in FIG.
For example, when the user uses the portable PC 51, it can be determined that the CPU capability as the terminal device is high (No in step D11).

At this time, if the data transmission capacity as the communication infrastructure is high (No in step D16), the information exchange process 11 of the information exchange apparatus 10 uses the compression / encryption processing unit 115 to compress the data as necessary. The data is transmitted after performing encryption and encryption (step D17).

If the data transmission capacity as the communication infrastructure is low (Yes in step D16), for example, binary data is converted to text data, format information such as centering is changed to blank characters, and font information is ignored. (Step D1)
8) Transmit the data after reducing the transmission data size.

On the other hand, the portable information terminal 31 having a low CPU capability
Is used (Yes in step D11),
Regardless of the communication infrastructure, the information exchange processing is performed in the same manner as described with reference to FIG. 10 (steps D12 to D1).
5).

As described above, first, the processing capability of the terminal device is checked, and if the processing capability is high, the communication capability of the communication infrastructure is next checked, and information exchange is performed in accordance with the communication capability. On the other hand, when the processing capability of the terminal device is low, the information exchange is performed according to the processing capability of the terminal device because the terminal device cannot cope with the communication capability of the communication infrastructure, no matter how high the communication capability.

As a result, even in a system in which various types of communication infrastructures coexist, it is possible to absorb / adjust the relative differences in the data transmission speed / amount / quality of the communication infrastructures. Can also receive services similar to those of other terminal devices.

In the present embodiment, the terminal device is P
Although the description assumes C, a portable PC, a portable information terminal, a pager, a FAX, a mobile phone, a printer, and the like, other server computers connected to a network may be used.
Further, in the above information exchange method, the program information in which the processing method is described may be stored in a storage medium operated by the server computer 1.

Next, a case where data encryption is performed will be described.

When an application service is used outside the office, it is important to encrypt and send the data in order to secure the security of the application service. In this case, since the terminal needs to have the ability to decrypt the encrypted data, the encrypted data cannot be sent to all terminal devices. In addition, when data is encrypted, the amount of data usually increases, so that the data transmission capacity of the communication infrastructure must be high.

The processing operation at this time is shown in FIG.

FIG. 12 is a flowchart showing a processing operation when data is encrypted.

In the processing operation shown in FIG. 12, when providing the application service of the application software by the application service unit 20, the information exchange apparatus 10 first obtains the attribute information of the terminal device as the communication partner from the terminal information management unit 12. Then, the processing capability of the terminal device is determined based on the attribute information (step E12).

As a result, it is found that the processing ability is high and the ability to decrypt the encrypted data is found (step E1).
2), the information exchange apparatus 10 next acquires communication infrastructure information to which the terminal device is connected from the communication infrastructure information management unit 15 (step E13), and determines the communication capability based on the communication infrastructure information. (Step E1
4).

When the communication capability is high (Yes in step E14), the information exchange apparatus 10 encrypts the information of the application service in the information exchange processing unit 11 (step E15), The encrypted service information is transmitted to the terminal device (step E16). As a result, the terminal uses the service after decrypting the encrypted data.

On the other hand, when the processing capability of the terminal device is low and the terminal device does not have the capability to decrypt the encrypted data (step E12).
No), the information exchange apparatus 10 transmits the information of the application service without encrypting the information (step E17) (step E16). At this time, a message to the effect that encryption has not been performed may be notified to the user. Alternatively, if there is no ability to decrypt the encrypted data (No in step E12), the terminal device side user is asked to determine whether or not to transmit before transmitting the data as it is, as described above. Transmission processing may be performed according to the answer result.

[0139] Even if the terminal device has a processing capability, but the communication capability of the communication network to which the terminal device is connected is low (No in step E14), the information exchanging apparatus 10 transmits the information of the application service. Is transmitted without encryption (step E17) (step E16).
Alternatively, when the communication capacity of the communication network is low (step E1).
No. 4), similar to the above, before the transmission as it is, the terminal device side user may be asked to determine whether or not the transmission may be performed, and the transmission processing may be performed based on the response result.

In the encryption process, even if the terminal device has a level of capability to handle the encryption process,
The necessity of encryption may be selectable by the user.

Furthermore, there are various levels of data encryption, from simple scrambling to high-level encryption, and the load on terminal equipment and communication infrastructure also varies. Therefore, the encryption level can be appropriately changed according to the processing capability of the terminal device or the communication capability of the communication infrastructure.

As described above, by providing the data encryption function, security can be ensured even when an application service is received outside the office. In this case, it is determined from the terminal attributes and the attributes of the communication infrastructure what kind of encryption is possible and what amount of encrypted data can be transmitted by the used communication infrastructure, and the appropriate Encryption can be performed.

Next, a case where data compression is performed will be described.

Data compression is an effective means for transmitting information having a large data amount such as image data. In this case as well, similar to the data encryption described above, the terminal needs to have the ability to decompress and process the compressed data. As for the communication infrastructure, since the compressed data can be sent as long as it takes time, the communication capability of the communication infrastructure does not matter here.

FIG. 13 shows the processing operation at this time.

FIG. 13 is a flowchart showing a processing operation when data compression is performed.

In the processing operation shown in FIG. 13, when providing the application service by the application service unit 20, the information exchange apparatus 10 first obtains the attribute information of the terminal device as the communication partner from the terminal information management unit 12. (Step F1
1) The processing capability of the terminal device is determined based on the attribute information (step F12).

As a result, it is found that the processing ability is high and the ability to decode the compressed data is found (step F1).
2), the information exchange apparatus 10 compresses the information of the application service in the information exchange processing unit 11 (step F13), and then transmits the compressed service information to the terminal device (step F13). F14). This allows
The terminal uses the service after decompressing the compressed data.

On the other hand, if the processing capability of the terminal device is low and there is no capability to expand the compressed data (step F12).
No), the information exchange apparatus 10 transmits the information of the application service without compression (step F15), as it is (step F14). At this time, a message to the effect that compression has not been performed may be notified to the user.

As described above, by providing a function of data compression, data transmission can be performed efficiently.
In this case, it is possible to determine what kind of data compression is possible from the terminal attributes and perform appropriate compression.

In the example of FIG. 13, it is determined whether data compression is possible only by the processing capability of the terminal device. However, the data compression is performed including the communication capability of the communication network to which the terminal device is connected. It may be determined whether or not is possible.

Further, the level of compression can be appropriately changed according to the processing capability of the terminal device and the communication capability of the communication infrastructure.

Next, a case where an application service is used using an input / output device will be described.

The input / output devices referred to here are devices other than a computer. In the example of FIG. 1, the input / output devices are a mobile phone 32, a pager (pager) 33, a FAX 34, a printer 42, and an image reader 43.

FIG. 14 is a flowchart showing a processing operation when using an application service using an input / output device. Upon receiving a signal from the user indicating that the application service is to be used (step G11), the information exchange apparatus 10
After performing user authentication of the user through the user information management unit 14 (step G12), the type of device used by the user is determined (step G13).

Here, if the user uses the input / output device (Yes in step G13), the information exchange apparatus 10 performs an information exchange process according to the input / output device (step G14), and the information exchange is performed. The subsequent service information is transmitted (step G15).

More specifically, if the input / output device is the mobile phone 32, the information exchange device 10 uses the voice processing function,
For example, text data is converted to voice data, and a service is provided as a voice message.

In the case of the pager 33, message data of a predetermined number of characters is transmitted and transmitted.
In the case of 34, the service is provided within a specific limited range corresponding to each input / output device, such as transmitting text data after converting it into image data.

On the other hand, if the user is not an input / output device but a terminal device having CPU processing capability (No in step G13), the information exchange apparatus 10 executes a normal application service (step G13). Step G16). That is, services are provided by exchanging information according to the processing capacity of each terminal device.

As described above, by exchanging information according to the input / output devices, even when the user uses a facsimile or the like, it is possible to provide an application service corresponding to the use.

It is also possible to exchange service information from the server by matching the attribute of the input / output device with the attribute of the communication infrastructure.

Hereinafter, a case where service information provided as an applied service is described in a structured language such as HTML (Hyper Text Markup Language) or SGML (Standard Generalized Markup Language) will be described. Note that HTML is a structured language (tag language) used in the WWW (World Wide Web), which is currently widely used on the Internet. SGML is C
ALS (Continuous Acquisition and Lifecycle Suppo
rt) is a structured language that is expected to spread in the future along with the spread of rt).

In general, as one of the management of document data including multimedia data, a technique using a structured document is considered. In this case, each component (text data, image data, moving image data, program, etc.) constituting the document data is managed by a tag, and a browsing device (browser) displays the document data on a screen based on the tag. Will be displayed. Therefore, when providing the service information described in the structured document format, if the server analyzes the tag, it is possible to know what kind of component of the document data provided as the service information is. it can.

Therefore, before the data is actually transferred, the structured document is analyzed based on the tag information, and the attribute information such as the data size and additional information of each component (information that cannot be displayed only with the tag information) is grasped. At the same time, an information exchange device for grasping the format corresponding to the attributes of the terminal device and the communication infrastructure is mounted on the server side. In this case, a tag for information exchange is inserted into the structured document generated from the information exchange device.

As described above, by performing data management in the structured document format, data management is facilitated.
Analysis of document parts becomes easy even in information exchange work. Also,
If an information exchange device is constructed based on a widely used structured language rule such as HTML, the widespread WW
Changes and effects on the W system can be minimized.

FIG. 15 is a conceptual diagram showing the configuration of the entire system including application services when a structured document is assumed. In the figure, reference numeral 61 denotes a structured document management unit which manages service information provided as application services such as various application software in a structured document format. This structured document management unit 61 is provided in the application service providing unit 20 of FIG. Here, the case where the application service providing unit 20 manages the service information described in advance in the structured document format has been described. However, as described later, even if the service information is in the unstructured document format, Good (see FIG. 20).

[0167] Reference numeral 62 denotes an information exchanging section, which exchanges information according to terminal attributes, communication infrastructure attributes, and the like. This information exchange unit 62 corresponds to the information exchange device 10 in FIG. 63
Denotes a network unit, which indicates various communication networks connecting the server and the terminal. The network unit 63 corresponds to the public network 30, the wired LAN 40, and the wireless LAN 50 in FIG.

Reference numerals 64a to 64c denote terminal devices that receive services from the server, such as PCs (Personal Communications).
puter), NC (Network Computer), PDA (Person
al Digital Assistants). These terminal devices 6
4a to 64c have different communication infrastructures and different processing capacities. In FIG. 1, it corresponds to the portable information terminal 31, the PC 41, and the portable PC 51.

In such a configuration, application services such as various types of application software are managed by the structured document management unit 61 in a structured document format (for example, an HTML document). Here, an example of the structured document is shown in FIG.

In FIG. 16, a tag 66 indicates that text data comes after that. Tag 6
Reference numeral 7 denotes document format information, which defines centering (center alignment). A tag 68 indicates font information. Here, a font having a large size is defined. The tag 69 indicates image information.

The information exchange section 62 analyzes the structured document, and checks the type of each component constituting the document and its data size based on the tag information inserted in the document. When transmitting each component data, the processing capability of the terminal device and the communication capability of the communication infrastructure are checked, and information is exchanged according to the capability.

For example, when it is determined that the data transmission capacity of the communication infrastructure is low, the transmission data is reduced by exchanging information (or data compression) for a document part having a large data amount. If it is determined from the terminal attributes that the terminal device to communicate with does not have a document display capability (in the case of a terminal without a browser), information is exchanged into a format that can be displayed on the terminal side. Perform data transmission.

Further, at the time of information exchange, the data is changed according to the user's preference so as to match the display style of the document (information exchange processing based on user information).

Next, a specific processing operation will be described.

Here, the operation when the service information in the structured document format is managed by the application service providing unit 20 will be described. However, the service information in the unstructured document format is managed by the application service providing unit 20. This case will be described later with reference to FIG.

First, a process according to the terminal attribute will be described.

FIG. 17 is a flowchart showing a processing operation according to a terminal attribute when a structured document is used. FIG.
In the application service providing unit 20 in the server computer 1,
Manages service information described in a structured document format. When a certain terminal device issues a document request instruction (service request instruction) to the server computer 1, the service information described in the structured document format is applied to the application service providing unit 2.
0 is passed to the information exchange device 10. Thereby, the information exchange apparatus 10 executes the following information exchange processing.

That is, the information exchange apparatus 10 first analyzes the structured document constituting the service information (step H11). In this case, in the structured document, each component is defined by a syntax prescribed including the tag information. Based on the tag information, the information exchange device 10 determines the type of each component constituting the document and its data. The size is checked (step H12). This is to find out, for example, where and how much image information is located and where and how much is the program.

A series of processes such as disassembly, search, extraction, and information exchange to be described later are performed by the information exchange execution unit 113 (FIG. 2) in the information exchange processing unit 11.

After the analysis of the structured document, the information exchange apparatus 10 acquires the attribute information of the terminal device as the communication partner from the terminal information management unit 12 and checks the processing capability (step H1).
3). As a result, if it is determined that the processing capacity of the terminal is low and the terminal does not have the ability to display the structured document, the information exchange apparatus 10 displays each component data of the structured document in a format that can be displayed by the terminal. (Step H14).

That is, in the case of a terminal device having a low screen control function (a terminal having no browser function), for example, when the information provided as service information is image information, in particular, moving image information, the information is represented by symbol information (image information). To something that is simply shown in some form). In the case of format information of a document, it is converted into a blank character or a new line and sent. In the case of a character type, it is ignored because the terminal cannot handle it.
Furthermore, since a program such as "Java" or "ActiveX" operating on the client (terminal) side cannot be handled by the terminal, it is ignored and a message indicating that the program cannot be handled is notified.

When information exchange according to the processing capability of the terminal device is performed as described above, the information exchange device 10 transmits the service information after the information exchange via the communication network to which the terminal device is connected. (Step H15).

As a result, for example, even when a terminal device having no ability to display a structured document is used, the service information can be provided in a format suitable for the terminal.

Next, processing according to the attribute of the communication infrastructure will be described.

In information exchange based on the attribute of the communication infrastructure, only the data size of each component is important.

FIG. 18 is a flowchart showing a processing operation according to the attribute of the communication infrastructure when a structured document is used. In FIG. 1, service information described in a structured document format is managed in an application service providing unit 20 in the server computer 1. From a terminal device to server computer 1
When there is a document request instruction (service request instruction) for
The service information described in the structured document format is passed from the application service providing unit 20 to the information exchange device 10. Thereby, the information exchange apparatus 10 executes the following information exchange processing.

That is, the information exchange apparatus 10 first analyzes the structured document constituting the service information (step I11). In this case, in the structured document, each component is defined by a syntax prescribed including the tag information. Based on the tag information, the information exchange device 10 determines the type of each component constituting the document and its data. The size is checked (step I12). This is to find out, for example, where and how much image information is located and where and how much is the program.

A series of processes such as disassembly, retrieval, and extraction of parts by document analysis and information exchange described later are performed by the information exchange execution unit 113 (FIG. 2) in the information exchange processing unit 11.

After analyzing the structured document, the information exchange apparatus 10 acquires attribute information of the communication infrastructure to which the terminal device as the communication partner is connected from the communication infrastructure information management unit 15,
The communication capability is checked (step I13). as a result,
If it is determined that the data transmission capability of the communication infrastructure is low, the information exchange device 10 converts each component data of the structured document into a format that matches the data transmission capability of the communication infrastructure (step H14).

That is, for example, PHS (Personal Handyphon)
e System) In the case of a communication infrastructure with a low data transmission capacity such as a data communication network, for example, when the information provided as service information is image information, particularly moving image information, the amount of information is reduced by dropping frames. Send in reduced form.

As described above, when information exchange according to the data transmission capacity of the communication infrastructure is performed, the information exchange device 1
No. 0 transmits the service information after the information exchange via the communication network to which the terminal device is connected (step I15).
Thus, for example, even when using a communication infrastructure having a low data transmission capability, service information can be provided in a format suitable for the communication infrastructure.

Next, processing according to the terminal attribute and the attribute of the communication infrastructure will be described.

FIG. 19 is a flowchart showing a processing operation according to a terminal attribute and a communication infrastructure attribute when a structured document is used. In FIG. 1, service information described in a structured document format is managed in an application service providing unit 20 in the server computer 1. Document request instruction (service request instruction) from a certain terminal device to server computer 1
If there is, the service information described in the structured document format is passed from the application service providing unit 20 to the information exchange device 10. Thereby, the information exchange apparatus 10 executes the following information exchange processing.

That is, the information exchange apparatus 10 first analyzes the structured document constituting the service information (step J11). In this case, in the structured document, each component is defined by a syntax prescribed including the tag information. Based on the tag information, the information exchange device 10 determines the type of each component constituting the document and its data. The size is checked (step J12). This is to find out, for example, where and how much image information is located and where and how much is the program.

A series of processes such as disassembly, search, extraction, and information exchange to be described later are performed by the information exchange execution unit 113 (FIG. 2) in the information exchange processing unit 11.

After analyzing the structured document, the information exchange apparatus 10 acquires the attribute information of the terminal device as the communication partner from the terminal information management unit 12 and checks the processing capability (step J1).
3). As a result, when it is determined that the processing capability of the terminal side is low and there is no capability to display the structured document (Yes in step J14), the information exchange apparatus 10 transmits each component data of the structured document to the terminal. Is converted into a format that can be displayed (step J14), and the service information after the information exchange is transmitted via the communication network to which the terminal device is connected (step J16).

On the other hand, when it is determined that the processing capability of the terminal is high and the terminal has the capability of displaying the structured document (No in step J14), the information exchange device 10 Of the communication infrastructure to which the terminal device to be connected is connected (step J1).
7). Then, the information exchange device 10 performs information exchange according to the communication capability of the communication infrastructure based on the attribute information (step J18), and transmits the service information after the information exchange via the communication network to which the terminal device is connected. Send it (step J16).

As described above, even when providing service information described in a structured document format, by exchanging information according to the terminal attributes and the attributes of the communication infrastructure, the processing capability of the terminal device and the communication infrastructure It is possible to provide a service that matches the communication ability.

It is to be noted that not only such terminal attributes and communication infrastructure attributes but also the user interface information management unit 13 shown in FIG. By exchanging information or using the user information management unit 14, it is also possible to exchange information based on user information indicating an operation method unique to each user.

[0200] In addition, data is encrypted, data is compressed, and when an input / output device such as a facsimile is used, information exchange according to the input / output device is performed. In providing the described service information,
All the methods described above can be applied.

Further, in the above example, a case where service information described in advance in a structured document format is provided, but the present invention is not limited to this, and a format different from the structured document format ( The present method can be applied even to service information described in (binary data). FIG. 20 shows the processing operation at this time.

FIG. 20 is a flowchart showing the processing operation when service information other than the structured document format is targeted. Here, the case of exchanging information according to the terminal attribute will be described, but the same applies to the case of exchanging information based on the attribute of the communication infrastructure, and further, user interface information, user information, and the like.

The difference from the processing in FIG. 17 is that the structured document conversion processing shown in steps K11 and K12 is added. This is a process for converting, for example, information in a binary format into a structured document format such as HTML. This structured document conversion process is also performed by the information exchange execution unit 113 (FIG. 2) in the information exchange processing unit 11.
In this case, in FIG. 1, the application service providing unit 20 in the server computer 1 manages service information described in an unstructured document format, and the information exchange device 10 converts the service information into a structured document format. Will be.

When a terminal device issues a document request instruction (service request instruction) to the server computer 1, service information described in a format different from the structured document format is transmitted from the application service providing unit 20 to the information exchange device 10. Passed to.
Thereby, the information exchange apparatus 10 executes the following information exchange processing.

That is, the information exchange apparatus 10 first cuts out the components constituting the service information (step K1).
1). In this case, for example, in the document information of binary data, for example, the main information, font, format,
Other attributes (date, author name, etc.) are managed. Therefore, each part can be cut out by examining the token. When each component is cut out, the information exchange apparatus 10 creates a structured document expressing these components in a structured language such as HTML (step K12).

After the structured document is created in this way, the processing described with reference to FIG. 17 is performed on the structured document.

That is, the information exchange apparatus 10 analyzes the structured document (step K13), and checks the type of each component constituting the document and its data size (step K13).
14). The information exchange device 10 is a terminal information management unit 1
The attribute information of the terminal device that is the communication partner is acquired from the communication device 2 (step K15), and information of each component is exchanged based on the attribute information (step K16). Information exchange device 10
Transmits the service information after the information exchange via the communication network to which the terminal device is connected (step K17).

As described above, even when the service information described in the unstructured document format is targeted, the same effect as described above can be obtained by adding the process of converting the service information to the structured document format. It is.

In the above description, a structured document such as HAML is taken as an example. For example, OLE (Object Linking and Emb
For example, the present invention can be applied to any document formed by each component data, such as edding).

Next, with reference to FIG. 21, which shows a flow of data updating on the server computer 1, for editing work such as correction, deletion, and addition of document data / user data managed and stored using a structured language. Will be explained.

The user opens a file to be updated stored and managed in the server computer 1 (step L11). When the desired file is opened, the user performs editing work such as correction, deletion, and addition to update document data, image data, and the like (step L12).

When this update is performed, the data change / update management unit 117 automatically updates / adds “version tag” information as version-up / update information for each updated location (step L13). When the updating of the document data or the image data is completed, the opened file is closed and managed and stored in a predetermined storage area (step L1).
4).

[0213] For the tag of the shared document, additional information may be added to the user information management unit 14 existing for each user.

For the document data updated as described above, for example, FIG. 22 showing a flow of accepting a data copy request on the server computer 1 in response to a copy request from a terminal outside the office, and FIG. This will be described with reference to FIG. 23 showing the flow of the copy process.

For example, when there is a transfer request for data copy of a predetermined file from the terminal side (step N11), the server computer 1 accepts this request (step M11) and opens the corresponding file. Then, when the desired file is opened, the version tag information including the location where the data has been corrected, deleted, or added is sent from the server computer 1 to the terminal side (step M12).

The terminal receives the version tag including the change tag (step N12), checks and checks the data difference between the server computer 1 and the terminal (step N13), and requests a copy of only the difference data, that is, the version tag. A request for data copy of the location where the information has been updated is returned to the server computer 1 (step N14).

The server computer 1 accepts the returned request (step M13), and transmits necessary parts to the terminal side (step M14). At this time, information exchange / data compression work may be performed according to the attribute level on the terminal side and transmitted.

On the other hand, on the terminal side, the data transmitted from the server computer 1 is received, the corresponding portion is updated (step N15), and the version tag information of the data is updated (step N15).
16). By doing so, it is possible to copy only a necessary portion (only a different plate) quickly and accurately.

Next, data having a relatively large data size, such as multimedia data such as moving image data, still image data, and audio data, which have not been transmitted in the past, and which are likely to be retransmitted in the future ( Data transfer processing relating to, for example, icons and voice messages) will be described with reference to FIG. Here, to the large data, symbol data of a small data size associated with the large data is assigned (executed by the information exchange execution unit 113).
The symbol data is transmitted from the server computer 1 thereafter, and the terminal side displays the original data (such as multimedia data) corresponding to the symbol data when receiving the symbol data.

When the server computer 1 receives a transfer request for certain document data including multimedia data from, for example, a terminal having a low processing capability (step P11), a desired file is opened and a symbol corresponding to the multimedia data is registered. It is determined whether or not it has been performed (step P12).

If the symbol has not been registered, it is checked whether data transfer is necessary (step P13). If the data transfer is not to be performed (No in step P13), the process ends.

On the other hand, when performing data transfer (necessary for step P13), the data transfer process including the above-described version tag information is performed (step P14), and symbol negotiation (symbol allocation process) for multimedia data is performed. This is performed between the server computer 1 and the terminal (step P
15) Symbol registration is performed (step P16).
This is performed by the server user data information management unit 114.

If the symbol corresponding to the multimedia data has been registered in step 12,
Correction / change of data is confirmed (step P
17). If there is data modification / change (step P1
(Yes to 7), and the process proceeds to Step P13. On the other hand, if there is no data correction / change (N
o) For the multimedia data, the corresponding symbol data is transmitted (step P18).

As described above, by using the present data transfer method, a large amount of data is copied by connecting to a high-speed LAN or the like in the office, and then only the difference data is automatically copied (when going out). In general, when data transfer such as data copy that requires a lot of time, especially when using a communication infrastructure having a low data transfer capability, the data transfer time can be reduced, the communication fee can be reduced, and reliable data transfer can be performed.

Although the data transfer is performed as described above, for example, a line error due to a collision of a packet on a line in a wired LAN, or the other terminal is in use (during communication)
Alternatively, retransmission processing when a line error occurs due to the power-off state of the partner terminal will be described with reference to FIG.
In addition, the line error is caused by the operating software (O
S): It is determined by obtaining network information from communication control software.

When the retransmission processing / line disconnection correspondence management unit 153 detects a data transfer error (step Q1).
1), the error information is notified to the retransmission management unit 117,
It is determined whether a line error has occurred due to the other terminal being used (communicating) or the power of the other terminal being turned off (step Q12).

If the partner terminal is in use (communicating) or a line error occurs due to the power-off state of the partner terminal (Yes in step Q12), the retransmission processing / line disconnection management unit under the control of the retransmission management unit At 153, data retransmission is performed after a predetermined time (step Q13). Then, the data retransmission process is performed at predetermined time intervals until the data transfer is securely performed. Here, the retransmission time interval may be set arbitrarily.

On the other hand, if there is no line error due to the other terminal being used (during communication) or the power of the other terminal turned off (No in step Q12), a low-quality line that may cause a large number of dropped packets, etc. It is determined that there is an error in the communication network (step Q14).

When the error is not such as described above (No in step Q14), the process ends without performing the retransmission process. At this time, a message indicating a transfer error may be transmitted to the terminal later.

On the other hand, in the case of an error due to a dropped packet (Yes in step Q14), under the control of the information exchange execution unit 113 and the compression / encryption processing unit 115, information exchange (re-processing etc.) / Data compression Is reduced and retransmitted (step Q15).

In this way, since the data size is reduced, the data transfer time can be shortened.
Data transfer can be performed reliably and efficiently.

Note that the information exchange / retransmission timing is determined by the O
It is controlled immediately before transmission in consideration of a communication network by network information from S / communication control software.

The above-described various control processing techniques include, as program information that can be executed by a computer, for example, a magnetic disk, ie, a floppy disk (FD) loaded in a floppy disk device (FDD),
Hard disk drive (HDD) and optical disk (CD
-ROM, DVD, etc.), writing to a recording medium such as a semiconductor memory and applying to various devices, or transmitting to a communication medium and applying to various devices. The computer (server computer 1) that realizes the present apparatus reads the program recorded on the recording medium, and executes the above-described processing by controlling the operation of the program.

(Second Embodiment) Next, a second embodiment of the present invention will be described.

In the first embodiment, the case where the information exchange device is provided in the server computer that provides the service has been described. In the second embodiment, the functions (processes) required for the information exchange are different. A case in which the information is distributed to server computers will be described.

FIG. 26 is a block diagram showing a configuration of a distributed network computing system according to the second embodiment of the present invention. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted here.

FIG. 26 differs from FIG. 1 in that a plurality of server computers 1a to 1e exist on the network. Here, the server computers 1a to 1e are interconnected via a wired LAN 2 in the office.

The server computer 1a is a main server computer for providing services, and has an application service unit 20. The server computer 1a is equipped with an information exchange processing unit 11 and operates as an information exchange control server that controls the entire information exchange.

The other server computers 1b to 1e are sub server computers. The server computer 1b has a terminal information management unit 12 for managing terminal attribute information.
And operates as a terminal information management server under the control of the server computer 1a.

The server computer 1c is equipped with a user interface information management unit 13 for managing user interface information, and operates as a user interface information management server under the control of the server computer 1a.

The server computer 1d has a user information management unit 1
4 operates as a user information management server under the control of the server computer 1a. Further, a communication infrastructure information management unit 15 is mounted on the server computer 1e, and operates as a communication infrastructure information management server under the control of the server computer 1a.

These server computers 1a to 1e are connected to various communication networks (public network 30, wired LAN 40, wireless LAN 5).
0) through various terminal devices (portable information terminal 31, PC
41, portable PC 51, etc.).

That is, in the second embodiment, the terminal information management unit 12, the user interface information management unit 13, the user information management unit 14, and the communication infrastructure information management unit 15 are mounted on different server computers 1b to 1e, respectively. A distributed processing system is constructed in such a manner that the server computer 1a in which the information exchange processing unit 11 is mounted controls various processes to realize a unified information exchange processing function as a whole.

In this case, the information exchange device internal communication interface 111 shown in FIG. 2 controls communication between the servers, and the information exchange device external communication interface 116
Manages application services and communication processing with other terminal devices.

In the example of FIG. 26, each of the functions required for information exchange is distributed to each of the server computers 1b to 1e. However, two or more functions are assigned to one server. A computer may have the same function, or a plurality of server computers may have the same function.

Next, the operation of the second embodiment will be described.

FIG. 27 is a flowchart showing a service providing processing operation by distributed processing in the second embodiment.

In the service providing processing by the distributed processing, when providing an application service to a certain terminal device, the server computer 1a first checks functions necessary for information exchange (step X11). The functions required for information exchange in this case are a function of managing terminal attribute information and communication infrastructure information, and a function of managing user interface information and user information.

Here, for example, in the case of exchanging information according to the terminal attribute, a management function of terminal attribute information is necessary, and the server computer 1a accesses each of the other server computers 1b to 1e, and A server computer having a management function is checked (step X12). At that time, there are cases where the same function is assigned to multiple server computers.
The server computer 1a confirms each of the corresponding server computers and selects a server computer that can use the function (steps X13 and X14).

In the example of FIG. 26, this corresponds to the server computer 1b. In this case, since only one of the server computers 1b has the function of managing the terminal attribute information, the server computer 1a communicates with the server computer 1b, and the server computer 1b communicates with the server computer 1b.
Wait for permission from b.

When the use is permitted from the server computer 1b (Yes in step X14), the server computer 1a obtains the terminal attribute information of the terminal device as the communication partner from the terminal information management unit 12 of the server computer 1b. ,
The service providing process by information exchange as described in the first embodiment is executed (step X15).

That is, the server computer 1a converts the service information provided as an applied service into a specific format based on the terminal attribute information in the information exchange processing section 11, and converts the converted service information to the terminal. Transmission is performed via a communication network to which the device is connected. The information exchange in this case is to change the format of certain information in accordance with the processing capability of the terminal device as the communication partner.

The above is an example of the case of exchanging information according to the attribute of the terminal. As described above, for example, when exchanging information according to the attribute of the communication infrastructure, the server computer 1b
To 1e to check for a server computer having a function of managing communication infrastructure information.

As a result, by acquiring the communication infrastructure information of the terminal device as the communication partner from the communication infrastructure information management unit 15 of the corresponding server computer 1e, the first
A service providing process by information exchange as described in the embodiment is executed. The information exchange in this case is to change the format of certain information in accordance with the communication capability of the communication network to which the terminal device as the communication partner is connected.

Further, when exchanging information according to the attributes of the user interface, the server computers 1b to 1e
Are accessed, and a server computer having a user interface information management function is checked.

As a result, by acquiring the user interface information corresponding to the terminal device with which the communication is made from the user interface information management unit 13 corresponding to the corresponding server computer 1c, the same as described in the first embodiment can be obtained. Execute service provision processing by information exchange. The information exchange in this case is to change the format of certain information in accordance with the operation method of the terminal device as the communication partner (the operation method when receiving an applied service such as an icon, a button, or a command).

When information is exchanged in accordance with the attributes of the user, each of the server computers 1b to 1e is accessed to check for a server computer having a user information management function.

As a result, by acquiring the user information corresponding to the terminal device as the communication partner from the user information management unit 14 of the corresponding server computer 1d,
A service providing process by information exchange as described in the embodiment is executed. The information exchange in this case is to change the format of certain information in accordance with the operation method of the user who uses the terminal device as the communication partner (the operation method of the user's preference such as screen display preference).

As described above, even if the functions of the information exchange device are decentralized, the same effect as that of the first embodiment can be obtained. Further, by decentralizing each function, it is possible to realize an advanced information exchange processing function by combining a plurality of servers having relatively low processing capabilities. In this case, the distributed processing reduces the processing load on the server that provides the service (the server computer 1a in FIG. 26), so that a small-sized computer can be used. Further, since the system is realized by combining a plurality of servers, it is possible to flexibly deal with a system failure in comparison with a centralized system, and to improve reliability.

In the second embodiment, the decentralization is performed for a plurality of servers commonly connected to the wired L @ N2 in the office. However, for example, connection to various communication networks such as the public network 30 is performed. It is also possible to perform decentralization for a plurality of servers that have been set.

Further, in the case of finding a server having a desired function, in the above-mentioned second embodiment, communication / communication is established with each server, but the present invention is not limited to this. For example, a corresponding server may be found by referring to a table indicating what function each server has.

Further, it is also possible to disperse the function of encrypting data and the function of compressing data in another server. In this case, if the data is encrypted,
The server having the function determines whether data encryption is possible based on terminal attribute information and communication infrastructure information,
If data encryption is possible, service information provided as an applied service is encrypted. The server that performs the application service receives the encrypted service information and sends it to the terminal device that is the communication partner.

Similarly, in the case of data compression, the server having the function determines whether or not data compression is possible based on terminal attribute information and communication infrastructure information. If possible, compress service information provided as an applied service. The server that performs the application service receives the compressed service information and sends it to the terminal device that is the communication partner.

Furthermore, FIG. 7 described in detail in the first embodiment
Also, the control processing shown in FIG. 8, the control processing shown in FIG. 10 to FIG. 14 (for example, the control processing of the encryption / compression function), and the control processing shown in FIG. 17 to FIG. Of course, you can.

(Third Embodiment) Next, a third embodiment of the present invention will be described.

In the third embodiment, a case where the information exchange apparatus is realized on an exchange will be described.

FIG. 28 is a block diagram showing a configuration of an integrated server 70 when the information exchange device according to the third embodiment is realized on an exchange. Here, an apparatus in which the circuit switch and the server computer are integrated is referred to as an integrated server.

As shown in FIG. 28, this integrated server 70
Is provided with an information exchange device 71. The information exchange device 71 exchanges information according to the attributes of the terminal device and the communication infrastructure and the like. The specific configuration is the same as that of the information exchange device 10 in FIG. Shall be.

Further, the integrated server 70 is provided with an office application service unit 72a as a server computer. The application service unit 72a performs various office-based application services (application software) such as an inventory management service. At present, the application service unit 72a cannot be directly mounted on a real-time operating system (hereinafter, referred to as a real-time OS) 77 without any change.
4 is interposed. The real-time OS 77 is an OS for real-time processing, and is a general OS (for example, UNIX or M
Unlike S-DOS), it emphasizes the response speed.

[0270] The office application service unit 72b that can be started on the real-time OS 77 can be directly mounted on the real-time OS 77 without going through the virtual computer 74. The virtual computer 74 is a computer created virtually, and is functionally equivalent to one actual computer (real computer), and can operate one OS on one virtual computer. it can. In the present embodiment, the virtual computer 74 is incorporated in the circuit switch 73.

The circuit switch 73 comprises a virtual computer 74, a real-time application service unit 75, and a switch function unit. The real-time application service unit 75 performs general telephone-based services such as alternate reception (answering machine) and message transfer (pager). Switch function unit 7
Reference numeral 6 has a function as an exchange such as line connection and telephone number management. FIG. 29 shows the configuration.

As shown in FIG.
Is composed of a terminal control unit 761, a service control unit 762, and a maintenance operation unit 763. The terminal control unit 761 performs control such as receiving a signal from a terminal device and passing it to the next place. The service control unit 762 determines what kind of service to provide according to the signal. Maintenance operation section 76
Reference numeral 3 includes telephone number information and the like in addition to line error information.

The hardware 78 is, for example, a CP
U indicates a physical circuit portion such as a line circuit.

With such a configuration, it is possible to realize an apparatus having both a circuit exchange and an information exchange existing on the telephone communication network. In this case, by implementing the integrated server, information can be exchanged in a final format near the terminal device of the user. That is, when a network is formed from each subnetwork, information can be exchanged in a format suitable for the subnetwork.

Also, by storing data in the terminal integrated server, the integrated server is ultimately used as a cache, and only the simplified data transmission to the communication partner terminal device, that is, the cache is stored in the cache. Notifies that data has been registered. As a result, loss of data amount can be minimized, and characteristics of each sub-network can be compensated.

Furthermore, if an exchange is arranged, it can be used as an office server. In this case, since a large number of exchanges are often arranged on the network, the distributed processing described in the second embodiment is effective.

In the example shown in FIG. 28, a configuration is shown in which an information exchange device is incorporated in an integrated server in which a server computer and an exchange are integrated. However, the present invention is not limited to this. The application service provided from the integrated server may be converted into a predetermined format by an information exchange device and sent, provided separately from the server (server computer + exchange). Further, each function as an information exchange device may be provided in a distributed manner in a plurality of exchanges. In short, the present invention can be variously modified and implemented without departing from the gist thereof.

In the following, a case where an exchange is provided with an information exchange device will be described.

FIG. 30 is a block diagram showing a configuration of a distributed network computing system according to the third embodiment.

Now, in the office 81, PC 82, PC 8
3, and an integrated server 85 connected to these PCs 82 and 83 via a wired LAN 84.

The integrated server 85 is a computer in which a server computer and a PBX (private branch exchange) are integrated, and operates as an exchange and provides application services as a server computer.

On the other hand, it is assumed that a PC 92 and an integrated server 94 connected to the PC 92 via a wired LAN 84 are provided in the office 91. Integrated server 94
Is a server computer and a PB
X (private branch exchange).

Incidentally, reference numeral 100 denotes a public network, and 101 denotes a private branch exchange existing on the public network. Reference numeral 102 denotes a mobile terminal device provided with a service. This portable terminal device 1
02 is connected to the integrated server 94 by the private radio 95 in the office 91.

In such a configuration, the application services provided from the integrated server 85 in the office 81 are the terminal devices (PC82, PC83) installed in the same office.
The terminal device (PC 92, portable terminal device 102) installed in another office 91 can also be used.

Here, when the information exchange function is provided in the PBX 85a of the integrated server 85, as shown in FIG.
The BX 85 a is sent to the integrated server 94 via the public network 100.

At this time, if the user uses the portable terminal device 102, the service information is provided from the integrated server 94 via the local wireless network 95. However,
When the mobile terminal device 102 cannot receive the service information due to an excessive amount of information or the like, it is necessary to exchange information with the PBX 85a of the integrated server 85 and then have the service information retransmitted.

On the other hand, the PBX 85a of the integrated server 85 and the PBX 94a of the integrated server 94 may be provided with an information exchange function in a distributed manner. In this case, as shown in FIG. 31B, the PBX 85a can determine only what kind of terminal device the user is using, and send the service information to the terminal integrated server 94 as it is. . The service information at this time is sent to the integrated server 94 via the PBX 85a and the public network 100. PB of integrated server 94
In X94a, the communication infrastructure of the terminal device used by the user is determined, and the service information is exchanged and transmitted according to the data transmission capability of the communication infrastructure.

At this time, if the amount of the service information is large and the user is using the portable terminal device 102, only the notification of the service provision is sent to the portable terminal device 102, and the service information is left as it is. PC9 in the form of
2, the service information can be re-transmitted from the integrated server 85 without the user retransmitting the service information.
2 or directly connect the portable terminal device 102 to the wired LAN.
By connecting to the service 93, the service can be provided. That is, the terminal integrated server to which the terminal device receiving the service is connected can be used as a cache, and as a result, unnecessary time can be saved and the line usage fee can be reduced.

As described above, by providing an information exchange function to a circuit exchange, information can be exchanged in a final form near a user's terminal device. That is, when a network is formed from each subnetwork, information can be exchanged in a format suitable for the subnetwork.

The control processing shown in FIGS. 7 and 8 described in the first embodiment, the control processing shown in FIGS. 10 to 14 (for example, the control processing of the encryption / compression function), and FIGS. It goes without saying that the control processing shown in FIG. 24 can be similarly applied to the present embodiment. For example, the present invention can be applied to the present embodiment for controlling data retransmission described in detail in the first embodiment.

Although the third embodiment has been described with reference to a circuit switch, the present invention is not limited to this. For example, a route for connecting LANs to each other may be used.
Even in the evening. In short, as long as a network connection device interconnects a network (a public network in a circuit switch and a LAN in a router), the same effect as described above can be obtained by mounting an information exchange device in the network connection device. Things.

In each of the above embodiments, the terminal device receiving the application service may operate as a server computer.

The method described in each of the above embodiments can be executed by a computer as a program such as a magnetic disk (floppy disk, hard disk, etc.), an optical disk (CD, etc.) as shown in FIG. -ROM, DVD, etc.), it is also possible to write in a recording medium such as a semiconductor memory or a storage device of a device such as a PC card and apply it to various devices, or transmit it through a communication medium and apply it to various devices. . The computer (server computer 1) that realizes the present apparatus reads the program recorded on the recording medium, and executes the above-described processing by controlling the operation of the program.

[0294]

As described above in detail, according to the present invention, when a plurality of types of terminal devices are present on a network, service information provided as an applied service is formatted according to the processing capability of each terminal device. It is excellent in portability by exchanging information and sending it, but its information processing ability (calculation ability) and screen display / user interface providing ability are relatively inferior to other terminal devices (PC etc.). A distributed network computing system can be constructed using a terminal device (such as a PDA), and the terminal can receive the same services as other terminal devices even if the format changes.

Further, when a plurality of types of communication networks coexist, the service information provided as an applied service is exchanged in a format corresponding to the communication capability of each communication network and is transmitted, so that the data transfer rate of the communication infrastructure is improved. It is possible to absorb relative differences such as / amount / quality, and the terminal can receive the same service as other terminal devices, even if the format is changed.

Further, the operation method for each terminal device (the operation method for receiving an applied service such as an icon, a button, or a command) is provided as user interface information.
If information is exchanged for each terminal device based on the user interface information, the user can always receive a service by an operation method corresponding to each terminal device.

[0297] Further, if the preference of the user using each terminal device is held as user information, and information is exchanged for each user based on the user information, the user always has his / her own preference. Service can be provided according to

By providing a data encryption function, security can be ensured even when an application service is received outside the office.

Further, by providing a data compression function, data transmission can be performed efficiently.

[0300] Even when a user uses an input / output device such as a facsimile, application services can be provided by exchanging information according to the input / output device.

[0301] Further, by using the plate tag information and the symbol information, it is possible to shorten the time and improve the reliability of the data transfer and reduce the data transfer cost. Furthermore, since retransmission processing due to a line error can be performed according to the type of the error, efficient and highly reliable data transfer can be performed.

Further, according to the present invention, by decentralizing each function as an information exchange apparatus, it is possible to realize a sophisticated information exchange processing function by combining a plurality of servers having relatively low processing capabilities. it can. As a result, in a network environment where various terminal devices are present, it is possible to provide application services according to the processing capacity of each terminal device without requiring a large server computer, and when a plurality of communication infrastructures are mixed However, it is possible to provide application services according to the communication capability of the communication infrastructure.

In addition, according to the present invention, a situation in which the server is down due to the local concentration of functions as in the prior art, or the entire system cannot be used if the communication network cannot be used. It is possible to provide application services that are resistant to obstacles.

Further, according to the present invention, when a plurality of types of terminal devices exist on a network, service information provided as an applied service is exchanged and transmitted in a format corresponding to the processing capability of each terminal device. Therefore, although it is excellent in portability, information processing ability (calculation ability) and screen display /
It is possible to construct a distributed network computing system using a terminal device (such as a PDA) whose user interface providing capability is relatively inferior to other terminal devices (such as a PC). Even if it changes, you will be able to receive the same services as other terminal devices.

Furthermore, when a plurality of types of communication networks coexist, service information provided as an applied service is exchanged in a format corresponding to the communication capability of each communication network and transmitted, so that the data transmission speed of the communication infrastructure can be improved. It is possible to absorb relative differences such as / amount / quality, and the terminal can receive the same service as other terminal devices, even if the format is changed.

In particular, by providing such an information exchange function in a circuit switch or a router, information can be exchanged in a final form near a user's terminal device. That is, when a network is formed from each subnetwork, information can be exchanged in a format suitable for the subnetwork.

Further, it can be used as a cache. For example, only a simplified data transmission to a terminal device as a communication partner, that is, a notification that data has been registered in the cache is notified, so that a loss of data amount is reduced. Can be minimized, and the characteristics of each sub-network can be compensated.

Further, by distributing the information exchange function for each exchange / router, individual loads can be reduced.

In addition, as described above, according to the present invention,
By using the plate tag information and the symbol information, it is possible to shorten the time and improve the reliability of the data transfer and reduce the data transfer cost. Furthermore, since retransmission processing due to a line error can be performed according to the type of the error, efficient and highly reliable data transfer can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a distributed network computing system according to a first embodiment of the present invention.

FIG. 2 is an exemplary block diagram showing the internal configuration of an information exchange processing unit in the information exchange apparatus according to the embodiment.

FIG. 3 is an exemplary block diagram showing the internal configuration of a terminal information management unit in the information exchange apparatus according to the embodiment.

FIG. 4 is an exemplary block diagram showing the internal configuration of a user interface information management unit in the information exchange apparatus according to the embodiment.

FIG. 5 is an exemplary block diagram showing the internal configuration of a user information management unit in the information exchange apparatus according to the embodiment.

FIG. 6 is an exemplary block diagram showing the internal configuration of a communication infrastructure information management unit in the information exchange apparatus according to the embodiment.

FIG. 7 is an exemplary flowchart showing the processing operation of a general application service according to the embodiment;

FIG. 8 is an exemplary flowchart showing the processing operation of an applied service when the information exchange apparatus according to the embodiment is used.

FIG. 9 is an exemplary view showing a protocol sequence for determining a terminal attribute according to the embodiment;

FIG. 10 is an exemplary flowchart showing the processing operation of information exchange according to the terminal attribute according to the embodiment;

FIG. 11 is an exemplary flowchart showing the processing operation of information exchange according to the communication infrastructure according to the embodiment;

FIG. 12 is an exemplary flowchart showing the processing operation when data is encrypted according to the embodiment;

FIG. 13 is an exemplary flowchart showing the processing operation when compressing data according to the embodiment;

FIG. 14 is an exemplary flowchart showing the processing operation when an application service is used using the input / output device according to the embodiment.

FIG. 15 is an exemplary conceptual diagram showing the configuration of the entire system including application services when a structured document according to the embodiment is assumed.

FIG. 16 is an exemplary view showing an example of a structured document according to the embodiment.

FIG. 17 is an exemplary flowchart showing a processing operation according to a terminal attribute when the structured document according to the embodiment is used.

FIG. 18 is a flowchart showing a processing operation according to the attribute of the communication infrastructure when the structured document according to the embodiment is used.

FIG. 19 is a flowchart showing a processing operation according to the terminal attribute and the attribute of the communication infrastructure when the structured document according to the embodiment is used.

FIG. 20 is an exemplary flowchart showing the processing operation when service information other than the structured document format according to the embodiment is targeted;

FIG. 21 is an exemplary flowchart showing the data update processing operation on the server computer according to the embodiment.

FIG. 22 is an exemplary flowchart showing the data copy request / acceptance processing operation on the server computer according to the embodiment.

FIG. 23 is an exemplary flowchart showing the data copy processing operation on the terminal device side according to the embodiment;

FIG. 24 is a flowchart showing symbol data transmission processing operation according to the embodiment.

FIG. 25 is an exemplary flowchart showing the data retransmission processing operation according to the embodiment;

FIG. 26 is a block diagram showing a configuration of a distributed network computing system according to a second embodiment of the present invention.

FIG. 27 is a flowchart showing a service providing processing operation by distributed processing in the second embodiment.

FIG. 28 is a block diagram showing a configuration of an integrated server when the information exchange device according to the third embodiment is realized on an exchange.

FIG. 29 is a block diagram showing a configuration of a switching function unit of the circuit switch according to the third embodiment.

FIG. 30 is a block diagram showing a configuration of a distributed network computing system according to the third embodiment.

FIG. 31 is a view for explaining a processing operation when an information exchange function is mounted on the PBX in the third embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Server computer 10 ... Information exchange apparatus 11 ... Information exchange process part 12 ... Terminal information management part 13 ... User interface information management part 14 ... User information management part 15 ... Communication infrastructure information management part 20 ... Application service part 30 ... Public Network 31 Portable information terminal 32 Mobile phone 33 Pager 34 FAX 40 Wired LAN 41 PC 42 Printer 43 Image reader 50 Wireless LAN 51 Portable PC 117 Retransmission management unit 1a Server computer ( Information exchange control server) 1b Server computer (terminal information management server) 1c Server computer (user interface information management server) 1d Server computer (user information management server) 1e Server computer (communication infrastructure information management server) 2 ... Wired LAN 70: Integrated server 71: Information exchange device, 72 a, 72b office application service unit 73 circuit switch 74 virtual computer 75 application service unit 76 exchange function unit 77 real-time OS 78 hardware

Claims (103)

[Claims] 1. An information processing apparatus for providing an application service such as application software, various terminal devices receiving the application service from the information processing apparatus, and a communication network connecting the information processing apparatus and the terminal device. A terminal attribute information managing means for providing an information exchange device in the information processing device, and managing terminal attribute information indicating a processing capability of each of the terminal devices in the information exchange device. Conversion means for acquiring terminal attribute information of a terminal device serving as a communication partner from the terminal attribute information management means, and converting service information provided as an applied service into a specific format based on the terminal attribute information; Communication means for transmitting the service information converted by the conversion means via the communication network; Means for, when transmitting the service information to the terminal device, determining a type of the error when a line error occurs, and retransmitting the service information based on the type of the error. A distributed network computing system, characterized in that: 2. An information processing apparatus for providing an application service such as application software, a terminal device receiving the application service from the information processing apparatus, and a communication network connecting the information processing apparatus and the terminal device. A distributed network computing system, comprising: an information exchange device provided in the information processing device; and a communication infrastructure information management unit that manages communication infrastructure information indicating communication capability of the communication network in the information exchange device; A conversion that acquires communication infrastructure information of a communication network to which a terminal device as a communication partner is connected from communication infrastructure information management means, and converts service information provided as an applied service into a specific format based on the communication infrastructure information. Means, and the service information converted by the conversion means via the communication network. A communication unit for transmitting, and when the service information is transmitted to the terminal device by the communication unit, when a line error occurs, the type of the error is determined, and the service information is determined based on the type of the error. And a means for performing retransmission processing. 3. An information processing apparatus for providing an application service such as application software, a terminal device receiving the application service from the information processing apparatus, and a communication network connecting the information processing apparatus and the terminal device. A distributed network computing system comprising: an information exchange device provided in the information processing device; and a terminal attribute information management unit that manages terminal attribute information indicating a processing capability of the terminal device in the information exchange device; Communication infrastructure information management means for managing communication infrastructure information indicating communication capability of the communication network; and acquiring terminal attribute information of a terminal device to be a communication partner from the terminal attribute information management means, and acquiring the terminal attribute information from the communication infrastructure information management means. Acquires communication infrastructure information of the communication network to which the terminal device is connected, and provides it as an applied service. Conversion means for converting the service information to be converted into a specific format based on the terminal attribute information and the communication infrastructure information; communication means for transmitting the service information converted by the conversion means via the communication network; When the communication means transmits the service information to the terminal device, when a line error occurs, the type of the error is determined, and the service information is retransmitted based on the type of the error. A distributed network computing system, which is provided. 4. An information processing device for providing an application service such as application software, various terminal devices receiving the application service from the information processing device, and a communication network connecting the information processing device and the terminal device. A distributed network computing system comprising: a network connection unit for interconnecting networks; an information exchange device provided in the network connection unit; and a terminal indicating the processing capability of the terminal device in the information exchange device. Terminal attribute information managing means for managing attribute information; acquiring terminal attribute information of a terminal device with which communication is to be performed from the terminal attribute information managing means; and specifying service information provided as an applied service based on the terminal attribute information. Conversion means for converting to the format of A communication unit for transmitting the service information via the communication network, and when the communication unit transmits the service information to the terminal device, when a line error occurs, the type of the error is determined, Means for retransmitting the service information based on the type of the error. 5. An information processing apparatus for providing an application service such as application software, a terminal device receiving the application service from the information processing apparatus, and a communication network connecting the information processing apparatus and the terminal device. A distributed network computing system comprising: a network connection unit for interconnecting networks; an information exchange device provided in the network connection unit; and a communication indicating a communication capability of the communication network in the information exchange device. Communication infrastructure information management means for managing infrastructure information; and acquiring communication infrastructure information of a communication network to which a terminal device as a communication partner is connected from the communication infrastructure information management means, and converting service information provided as an applied service to the above. Conversion means for converting to a specific format based on communication infrastructure information A communication means for transmitting the service information converted by the conversion means via the communication network; and when the communication means transmits the service information to the terminal device, when a line error occurs, Means for judging the type of error and retransmitting the service information based on the type of error. 6. An information processing apparatus for providing an application service such as application software, a terminal device receiving the application service from the information processing apparatus, and a communication network connecting the information processing apparatus and the terminal device. In the distributed network computing system, network connection means for interconnecting networks is provided, and an information exchange device is provided in the network connection means, and the information exchange device has terminal attribute information indicating a processing capability of the terminal device. Attribute information managing means for managing communication infrastructure information, managing communication infrastructure information indicating the communication capability of the communication network, and acquiring terminal attribute information of a terminal device as a communication partner from the terminal attribute information managing means. And the terminal equipment from the communication infrastructure information management means Conversion means for acquiring communication infrastructure information of a connected communication network and converting service information provided as an applied service into a specific format based on the terminal attribute information and the communication infrastructure information; Communication means for transmitting the service information obtained through the communication network, and when the communication means transmits the service information to the terminal device, when a line error occurs, the type of the error is determined. And a means for retransmitting the service information based on the type of the error. 7. A first information processing apparatus for providing application services such as various application software, various terminal devices receiving application services from the first information processing apparatus, and the first information processing apparatus And a communication network for connecting the terminal device to the second information processing device connected to the communication network separately from the first information processing device. Terminal attribute information management means for managing terminal attribute information indicating the processing capability of the first information processing apparatus; a search means for searching the first information processing apparatus for a second information processing apparatus having the terminal attribute information management means; For the second information processing apparatus searched by the search means, obtain the terminal attribute information of the terminal device as the communication partner from the terminal attribute information management means. Conversion means for converting service information provided as an applied service into a specific format based on the terminal attribute information; communication means for transmitting the service information converted by the conversion means via the communication network; When a line error occurs when the service information is transmitted to the terminal device by the communication means, the type of the error is determined, and the service information is retransmitted based on the type of the error. A distributed network computing system, which is provided. 8. A first information processing apparatus for providing an application service such as application software, a terminal device for receiving an application service from the first information processing apparatus, the first information processing apparatus and the terminal In a distributed network computing system comprising a communication network connecting devices, a processing capability of the communication network is provided to a second information processing device connected to the communication network separately from the first information processing device. Communication infrastructure information management means for managing communication infrastructure information indicating: a search means for searching the first information processing apparatus for a second information processing apparatus having the communication infrastructure information management means; For the searched second information processing apparatus, the communication infrastructure information management means transmits the communication infrastructure information of the terminal device as a communication partner. Conversion means for converting service information provided as an applied service into a specific format based on the communication infrastructure information, and communication for transmitting the service information converted by the conversion means via the communication network. Means, when a line error occurs when the service information is transmitted to the terminal device by the communication means, the type of the error is determined, and the service information is retransmitted based on the type of the error. Means for providing a distributed network computing system. 9. A first information processing apparatus for providing an application service such as application software, a terminal device for receiving an application service from the first information processing apparatus, the first information processing apparatus and the terminal In a distributed network computing system including a communication network connecting devices, a processing capability of the terminal device is indicated to a second information processing device connected to the communication network separately from the first information processing device. Terminal attribute information management means for managing terminal attribute information; and communication infrastructure information management means for managing communication infrastructure information indicating the processing capability of the communication network, wherein the first information processing apparatus comprises: Searching means for searching for a second information processing apparatus having the communication infrastructure information managing means; For the second information processing apparatus, the terminal attribute information of the communication target terminal device is obtained from the terminal attribute information management means, and the communication infrastructure information of the communication target terminal device is obtained from the communication infrastructure information management means. Converting means for converting service information provided as an applied service into a specific format based on the terminal attribute information and the communication infrastructure information; and converting the service information converted by the converting means via the communication network. A communication means for transmitting the service information to the terminal device by the communication means, and when a line error occurs, determining the type of the error and, based on the type of the error, And a means for retransmitting the distributed network. 10. The terminal device according to claim 4, wherein at least one of the terminal device and the communication network exists in plurality on the network. Distributed network computing system. 11. The terminal device according to claim 4, wherein a plurality of types of the terminal device exist on the network. 11. The distributed network computing system according to claim 10. 12. The distributed network computing system according to claim 4, wherein a plurality of types of the communication network exist on the network. . 13. The distributed network computing system according to claim 4, wherein said terminal device functions as a server computer. 14. The network connection means according to claim 4, wherein a plurality of said network connection means are present on a network, and each of said functions as said information exchange apparatus is provided in said network connection means in a decentralized manner. Or a distributed network computing system according to 6. 15. The distributed network computer according to claim 4, wherein said network connection means is provided integrally with said information processing apparatus, and forms an integrated server together with said information processing apparatus. System. 16. The distributed network computing according to claim 4, wherein said information exchange device is provided on a network independently of said information processing device and said network connection means. system. 17. The information exchange apparatus has a user interface information management means for managing user interface information indicating an operation method unique to each terminal device, and the conversion means communicates from the user interface information management means. The user interface information corresponding to a partner terminal device is acquired, and service information provided as an applied service is converted into a specific format based on the user interface information, or The distributed network computing system according to 3, or 4, or 5, or 6, or 7, or 8, or 9. 18. The information exchange apparatus has user information management means for managing user information indicating an operation method unique to each user, and the conversion means includes a communication partner from the user information management means. 4. The system according to claim 1, wherein user information corresponding to a terminal device to be obtained is obtained, and service information provided as an applied service is converted into a specific format based on the user information. , Or 4, or 5, or 6, or 7, or 8, or 9, the distributed network computing system. 19. The information exchange apparatus according to claim 1, wherein said information exchange apparatus determines whether or not data encryption is possible based on said terminal attribute information, and said encryption determination means enables data encryption. 3. The distributed network computing system according to claim 1, further comprising: an encryption unit configured to encrypt service information provided as an applied service when it is determined that the application service is an application service. 20. The second information processing apparatus further comprises: user interface information management means for managing user interface information indicating an operation method unique to each of the terminal devices; Means for searching for a second information processing apparatus having a means, and the conversion means targets the second information processing apparatus searched for by the search means from the user interface information management means to a terminal device serving as a communication partner. 10. The distributed network computer according to claim 7, wherein corresponding user interface information is obtained, and service information provided as an applied service is converted into a specific format based on the user interface information. System. 21. The second information processing apparatus further comprises user information management means for managing user information indicating an operation method unique to each user, and wherein the search means includes the user information management means. From the user information management means to the terminal device to be a communication partner for the second information processing apparatus searched by the search means. 10. The distributed network computing system according to claim 7, wherein user information is obtained, and service information provided as an applied service is converted into a specific format based on the user information. . 22. The second information processing device, comprising: encryption determination means for determining whether data encryption is possible based on the terminal attribute information; and data encryption by the encryption determination means. 8. The distributed network computing system according to claim 7, further comprising: an encryption unit that encrypts service information provided as an applied service when it is determined that the application information can be provided. 23. The distributed network computing system according to claim 19, wherein said encryption means changes an encryption level according to a processing capability of said terminal device. 24. The information exchange apparatus, wherein: encryption determining means for determining whether data encryption is possible based on the communication infrastructure information; and data encryption is possible by the encryption determining means. 6. The distributed network computing system according to claim 2, further comprising an encrypting unit for encrypting service information provided as an applied service when it is determined that the application service is applied. 25. The second information processing device, comprising: encryption determination means for determining whether data encryption is possible based on the communication infrastructure information; and data encryption by the encryption determination means. 9. The distributed network computing system according to claim 8, further comprising: encrypting means for encrypting service information provided as an applied service when it is determined that the service is available. 26. The distributed network computing system according to claim 24, wherein said encryption means changes an encryption level according to a communication capability of said communication network. 27. An information exchange apparatus comprising: an encryption determining unit configured to determine whether data encryption is possible based on the terminal attribute information and the communication infrastructure information; 7. The distributed network computing system according to claim 3, further comprising: an encrypting unit that encrypts service information provided as an applied service when it is determined that encryption is possible. 28. The second information processing apparatus comprising: an encryption determining unit that determines whether data encryption is possible based on the terminal attribute information and the communication infrastructure information; 8. The distributed network computing system according to claim 7, further comprising: an encryption unit that encrypts service information provided as an applied service when it is determined that data encryption is possible. 29. The encryption device according to claim 27, wherein the encryption unit changes an encryption level according to a processing capability of the terminal device and a communication capability of the communication network.
A distributed network computing system as described. 30. The information exchange apparatus, wherein a compression judging means for judging whether or not data can be compressed based on the terminal attribute information, and the data can be compressed by the compression judging means. 5. The distributed network computing system according to claim 1, further comprising a compression unit configured to compress service information provided as an applied service when it is determined that the application service is applied. 31. A second information processing apparatus comprising: compression determining means for determining whether data compression is possible based on the terminal attribute information; and data compression by the compression determining means. 8. The distributed network computing system according to claim 7, further comprising compression means for compressing service information provided as an applied service when it is determined that the service is available. 32. The distributed network computing system according to claim 30, wherein said compression means changes a compression level in accordance with a processing capacity of said terminal device. 33. The information exchange apparatus, wherein a compression judging means for judging whether or not data can be compressed based on the communication infrastructure information, and the data can be compressed by the compression judging means. 6. The distributed network computing system according to claim 2, further comprising a compression unit configured to compress service information provided as an applied service when it is determined that the application service is provided. 34. A second information processing apparatus comprising: compression determination means for determining whether data compression is possible based on the communication infrastructure information; and data compression by the compression determination means. 9. The distributed network computing system according to claim 8, further comprising compression means for compressing service information provided as an applied service when it is determined that the service is available. 35. The distributed network computing system according to claim 33, wherein said compression means changes a compression level according to a communication capability of said communication network. 36. An information exchange apparatus comprising: compression determination means for determining whether data compression is possible based on the terminal attribute information and the communication infrastructure information; and data compression by the compression determination means. 7. The distributed network computing system according to claim 3, further comprising: compression means for compressing service information provided as an applied service when it is determined that the conversion is possible. 37. A second information processing apparatus comprising: a compression determining unit configured to determine whether data can be compressed based on the terminal attribute information and the communication infrastructure information; 10. The distributed network computing system according to claim 9, further comprising compression means for compressing service information provided as an applied service when it is determined that data compression is possible. 38. The compression unit according to claim 36, wherein the compression unit changes a compression level according to a processing capability of the terminal device and a communication capability of the communication network.
A distributed network computing system as described. 39. An information exchange device provided in an information processing device for providing an application service to a terminal device connected via a communication network, wherein the terminal attribute manages terminal attribute information indicating a processing capability of the terminal device. Information management means, and conversion means for acquiring terminal attribute information of a terminal device as a communication partner from the terminal attribute information management means, and converting service information provided as an applied service into a specific format based on the terminal attribute information. Communication means for transmitting the service information converted by the conversion means via the communication network; and when transmitting the service information to the terminal device by the communication means, when a line error occurs, Means for determining the type of the error and retransmitting the service information based on the type of the error. Broadcast switching equipment. 40. An information exchange device provided in an information processing device for providing an application service to a terminal device connected via a communication network, wherein the communication infrastructure manages communication infrastructure information indicating communication capability of the communication network. Information management means, and from the communication infrastructure information management means, acquire communication infrastructure information of a communication network to which a terminal device as a communication partner is connected, and specify service information provided as an applied service based on the communication infrastructure information. Conversion means for converting the service information into a format of the following; communication means for transmitting the service information converted by the conversion means via the communication network; and when the service information is transmitted to the terminal device by the communication means, When a line error occurs, the type of the error is determined, and the service information is retransmitted based on the type of the error. That means the information exchange apparatus characterized by comprising comprises a. 41. An information exchange device provided in an information processing device for providing an application service to a terminal device connected via a communication network, wherein the terminal attribute manages terminal attribute information indicating a processing capability of the terminal device. Information management means, communication infrastructure information management means for managing communication infrastructure information indicating the communication capability of the communication network, and terminal attribute information of a terminal device with which communication is to be performed from the terminal attribute information management means; Obtain communication infrastructure information of a communication network to which the terminal device is connected from infrastructure information management means, and convert service information provided as an applied service into a specific format based on the terminal attribute information and the communication infrastructure information. Conversion means; communication means for transmitting the service information converted by the conversion means via the communication network; Means for determining the type of the error when a line error occurs when the service information is transmitted to the terminal device by the communication means, and retransmitting the service information based on the type of the error. An information exchange device, comprising: 42. User interface information management means for managing user interface information indicating an operation method specific to each terminal device, wherein said conversion means corresponds to a terminal device to be a communication partner from said user interface information management means. 40. The method according to claim 39, further comprising: acquiring user interface information to convert the service information provided as an applied service into a specific format based on the user interface information.
Or the information exchange device according to 40 or 41. 43. User information management means for managing user information indicating an operation method unique to each user, wherein said conversion means corresponds to a terminal device serving as a communication partner from said user information management means. 39. The method according to claim 39, further comprising: acquiring user information to be converted and converting service information provided as an applied service into a specific format based on the user information.
Or the information exchange device according to 40 or 41. 44. An encryption judging means for judging whether or not data encryption is possible based on the terminal attribute information, and when it is judged that the data encryption is possible by the encryption judging means. 40. The distributed network computing system according to claim 39, further comprising: encryption means for encrypting service information provided as an applied service. 45. The information exchange apparatus according to claim 44, wherein said encryption means changes an encryption level in accordance with a processing capability of said terminal device. 46. Encryption determining means for determining whether data encryption is possible based on the communication infrastructure information,
41. The apparatus according to claim 40, further comprising: an encrypting means for encrypting service information provided as an applied service when the encryption determining means determines that data encryption is possible. Information exchange device. 47. The information exchange apparatus according to claim 44, wherein said encryption means changes an encryption level according to a communication capability of said communication network. 48. An encryption judging unit for judging whether data encryption is possible based on the terminal attribute information and the communication infrastructure information, and that the data can be encrypted by the encryption judging unit. 42. The information exchange apparatus according to claim 41, further comprising: an encryption unit configured to encrypt service information provided as an applied service when the determination is made. 49. The information exchange apparatus according to claim 48, wherein said encryption means changes an encryption level according to a processing capability of said terminal device and a communication capability of said communication network. 50. A compression judging means for judging whether or not data can be compressed based on the terminal attribute information, and a method for judging whether the data can be compressed by the compression judging means. 40. The information exchange apparatus according to claim 39, further comprising: compression means for compressing service information provided as an applied service. 51. The information exchange apparatus according to claim 50, wherein said compression means changes a compression level in accordance with a processing capability of said terminal device. 52. A compression judging means for judging whether data can be compressed based on the communication infrastructure information,
41. The apparatus according to claim 40, further comprising compression means for compressing service information provided as an applied service when the compression determination means determines that data compression is possible. Information exchange device. 53. The information exchange apparatus according to claim 52, wherein said compression means changes a compression level according to a communication capability of said communication network. 54. Compression judging means for judging whether or not data can be compressed based on the terminal attribute information and the communication infrastructure information, and if the data can be compressed by the compression judging means. 42. The information exchange apparatus according to claim 41, further comprising a compression unit configured to compress service information provided as an applied service when the determination is made. 55. The information exchange apparatus according to claim 54, wherein said compression means changes a compression level in accordance with a processing capability of said terminal device and a communication capability of said communication network. 56. An information exchange method provided in an information processing apparatus for providing an application service to a terminal device connected via a communication network, wherein the terminal attribute information indicating the processing capability of the terminal device is managed by the terminal attribute information management. The terminal attribute information of the terminal device that is the communication partner is acquired from the terminal attribute information management unit, and the service information provided as an applied service is converted into a specific format based on the terminal attribute information. Then, transmitting the converted service information via the communication network, and when a line error occurs in the transmission, determining the type of the error and retransmitting the service information based on the error type. An information exchange method characterized by the following. 57. An information exchange method provided in an information processing apparatus for providing an application service to a terminal device connected via a communication network, wherein the communication infrastructure information indicating the communication capability of the communication network is managed by the communication infrastructure information management. The communication infrastructure information of the communication network to which the terminal device that is the communication partner is connected is acquired from the communication infrastructure information management unit, and the service information provided as an applied service is obtained based on the communication infrastructure information. After converting the service information into a specific format, the converted service information is transmitted through the communication network. If a line error occurs in the transmission, the type of the error is determined, and the error type is determined based on the error type. An information exchange method characterized by resending service information. 58. An information exchange method provided in an information processing apparatus for providing an application service to a terminal device connected via a communication network, wherein the terminal attribute information indicating the processing capability of the terminal device is managed by terminal attribute information management. And registering the communication infrastructure information indicating the communication capability of the communication network in the communication infrastructure information management unit, and acquiring the terminal attribute information of the terminal device as the communication partner from the terminal attribute information management unit, Obtain communication infrastructure information of a communication network to which the terminal device is connected from the communication infrastructure information management unit, and convert service information provided as an applied service into a specific format based on the terminal attribute information and the communication infrastructure information. After the conversion, the converted service information is transmitted through the communication network. If a line error occurs in the transmission, An information exchange method comprising: determining a type; and retransmitting the service information based on the error type. 59. An information exchange function is provided in a network connection device for interconnecting networks, and when transmitting service information provided as an applied service from an information processing device to a terminal device, the network connection device side transmits the service information. The processing capability of the terminal device is determined, the service information is converted into a specific format according to the processing capability, and if a line error occurs during transmission, the type of the error is determined, and based on this error type, An information exchange method characterized by resending the service information. 60. An information exchange function is provided in a network connection device for interconnecting networks, and when transmitting service information provided as an applied service from an information processing device to a terminal device, the network connection device side transmits the service information. The communication capability of the communication network to which the terminal device is connected is determined, the service information is converted into a specific format according to the communication capability, and if a line error occurs in transmission, the type of the error is determined. An information exchange method comprising retransmitting the service information based on an error type. 61. An information exchange function is provided in a network connection device for interconnecting networks, and when transmitting service information provided as an applied service from an information processing device to a terminal device, the network connection device side transmits the service information. Determines the processing capability of the terminal device and the communication capability of the communication network to which the terminal device is connected, converts the service information into a specific format according to the processing capability and communication capability, and when a line error occurs during transmission. An information exchange method, wherein the type of the error is determined, and the service information is retransmitted based on the error type. 62. An information exchange method provided in a first information processing device for providing an application service to a terminal device connected via a communication network, wherein the communication network is provided separately from the first information processing device. A terminal attribute information management unit is provided in the second information processing device connected to the terminal device, terminal attribute information indicating the processing capability of the terminal device is registered in the terminal attribute information management unit, and the terminal attribute information management unit is A second information processing apparatus having the terminal attribute information of a terminal device to be a communication partner from the terminal attribute information management unit for the second information processing apparatus; and a service provided as an applied service. The information is converted into a specific format based on the terminal attribute information, and the converted service information is transmitted through the communication network. An information exchange method comprising: determining a type of an error; and retransmitting the service information based on the error type. 63. An information exchange method provided in a first information processing apparatus for providing an application service to a terminal device connected via a communication network, wherein the communication network is provided separately from the first information processing apparatus. A communication infrastructure information management unit is provided in a second information processing apparatus connected to the communication infrastructure information, and communication infrastructure information indicating the communication capability of the communication network is registered in the communication infrastructure information management unit. Searching for a second information processing device having the same, and for the second information processing device, acquiring communication infrastructure information of a communication network to which a terminal device as a communication partner is connected from the communication infrastructure information management unit; The service information provided as an applied service is converted into a specific format based on the communication infrastructure information, and the converted service information is transmitted via the communication network. To, when the line failure occurs in the transmission, and determines the type of the error, the information exchange process, which comprises retransmission processing the service information based on the error type. 64. An information exchange method provided in a first information processing device for providing an application service to a terminal device connected via a communication network, wherein the communication network is provided separately from the first information processing device. A terminal information management unit and a communication infrastructure information management unit are provided in the second information processing device connected to the terminal information device, and terminal attribute information indicating the processing capability of the terminal device is registered in the terminal attribute information management unit;
Communication infrastructure information indicating the communication capability of the communication network is registered in the communication infrastructure information management unit, and a second information processing apparatus having the terminal attribute information management unit and the communication infrastructure information management unit is searched for. For the information processing apparatus 2, the terminal attribute information of the communication target terminal device is obtained from the terminal attribute information management unit, and the communication infrastructure information management unit communicates with the communication network to which the terminal device is connected. Acquiring infrastructure information, converting service information provided as an applied service into a specific format based on the terminal attribute information and the communication infrastructure information, and transmitting the converted service information via the communication network; When a line error occurs in this transmission, the type of the error is determined, and the service information is determined based on the error type. Information exchange method, characterized in that the feeding process. 65. The communication device according to claim 59, wherein at least one of the terminal device and the communication network exists in plurality on the network.
Or 62, 63, or 64. 66. The terminal device according to claim 59, wherein a plurality of types of the terminal devices exist on a network.
Or 61, or 62, or 63, or 64, or 6
5. Information exchange method described in 5. 67. The information exchange method according to claim 59, wherein a plurality of types of the communication network exist on the network. 68. The terminal device according to claim 59, wherein the terminal device functions as a server computer.
0, or 61 or 62, 63, or 64. 69. The network connection device according to claim 59, wherein a plurality of the network connection devices exist on a network, and each of the information exchange functions is provided in a decentralized manner in these network connection devices. Or 61, 62, 63, or 64. 70. The network connection device according to claim 59, wherein the network connection device is provided integrally with the information processing device, and realizes an integrated server function together with the information processing device. Or the information exchange method described in 63 or 64. 71. The information exchange function is provided on a network independently of the information processing device and the network connection device, wherein the information exchange function is provided on a network. Or the information exchange method described in 64. 72. A user interface information management unit for managing user interface information indicating an operation method unique to each terminal device, wherein the conversion unit corresponds to a terminal device serving as a communication partner from the user interface information management unit. The user interface information to be obtained is converted, and the service information provided as an applied service is converted into a specific format based on the user interface information. , Or 61, 62, 63, or 64. 73. A user information management unit for managing user information indicating an operation method unique to each user, wherein the conversion unit corresponds to a terminal device serving as a communication partner from the user information management unit. 57. The system according to claim 56, wherein user information is obtained, and service information provided as an applied service is converted into a specific format based on the user information.
7, or 58, or 59, or 60, or 61, or 6
2, or 63 or 64. 74. It is determined whether or not data encryption is possible based on the terminal attribute information. If it is determined that the data can be encrypted by the encryption determination, the data is provided as an application service. 58. The information exchange method according to claim 56, wherein said service information is encrypted. 75. The second information processing apparatus includes a user interface information management unit that manages user interface information indicating an operation method unique to each terminal device,
The search unit searches for a second information processing device having the user interface information management unit, and the conversion unit
For the second information processing apparatus searched by the search unit, user interface information corresponding to a terminal device as a communication partner is obtained from the user interface information management means, and service information provided as an applied service is obtained. 65. The information exchange method according to claim 62, wherein the information is converted into a specific format based on the user interface information. 76. The second information processing apparatus includes a user information management unit that manages user information indicating an operation method unique to each user, and the search unit includes the user information management unit. The conversion unit searches for the second information processing apparatus having the search information from the user information management unit and sends the second information processing apparatus searched by the search unit to the terminal device serving as a communication partner. 65. The information exchange method according to claim 62, wherein corresponding user information is obtained, and service information provided as an applied service is converted into a specific format based on the user information. . 77. The second information processing device determines whether data encryption is possible based on the terminal attribute information, and determines that data encryption is possible based on the encryption determination. 63. The information exchange method according to claim 62, wherein, in the case where the service information is provided, service information provided as an applied service is encrypted. 78. The distributed network computing system according to claim 74, wherein the encryption changes a level of encryption according to a processing capability of the terminal device. 79. It is determined whether or not data encryption is possible based on the communication infrastructure information. When it is determined that the data can be encrypted by the encryption determination,
61. The information exchange method according to claim 57, wherein service information provided as an applied service is encrypted. 80. The second information processing apparatus performs an encryption determination for determining whether data encryption is possible based on the communication infrastructure information, and the data can be encrypted based on the encryption determination. 64. The information exchange method according to claim 63, wherein when it is determined that the service information is present, service information provided as an applied service is encrypted. 81. The information exchange method according to claim 79, wherein the encryption changes a level of encryption according to a communication capability of the communication network. 82. It is determined whether data encryption is possible based on the terminal attribute information and the communication infrastructure information, and when it is determined that the data can be encrypted by the encryption determination, 62. The information exchange method according to claim 58, wherein service information provided as an applied service is encrypted. 83. The second information processing device judges whether data can be encrypted based on the terminal attribute information and the communication infrastructure information, and the data can be encrypted based on the encryption judgment. 63. The information exchange method according to claim 62, wherein when it is determined that the service information is service information, service information provided as an applied service is encrypted. 84. The information exchange method according to claim 82, wherein said encryption changes an encryption level according to a processing capability of said terminal device and a communication capability of said communication network. 85. It is determined whether or not data can be compressed based on the terminal attribute information. If it is determined that the data can be compressed by the compression determination, the data is provided as an application service. 60. The information exchange method according to claim 56, wherein said service information is compressed. 86. The second information processing apparatus determines whether data can be compressed based on the terminal attribute information, and determines that data can be compressed based on the compression determination. 63. The information exchange method according to claim 62, wherein the service information provided as an applied service is compressed when the service information is applied. 87. The information exchange method according to claim 85 or 86, wherein said compression changes a level of compression in accordance with a processing capability of said terminal device. 88. It is determined whether or not data can be compressed based on the communication infrastructure information. When it is determined that the data can be compressed by the compression determination,
61. The information exchange method according to claim 57, wherein service information provided as an applied service is compressed. 89. The second information processing device determines whether or not data can be compressed based on the communication infrastructure information, and determines that data can be compressed based on the compression determination. 64. The information exchange method according to claim 63, wherein the service information provided as an applied service is compressed when the service information is applied. 90. The information exchange method according to claim 88, wherein the compression changes a compression level in accordance with a communication capability of the communication network. 91. It is determined whether or not data can be compressed based on the terminal attribute information and the communication infrastructure information. If it is determined that the data can be compressed by the compression determination, 62. The information exchange method according to claim 58, wherein service information provided as an applied service is compressed. 92. The second information processing apparatus determines whether data can be compressed based on the terminal attribute information and the communication infrastructure information, and the data can be compressed based on the compression determination. 65. The information exchange method according to claim 64, wherein when it is determined that the service information is service information, service information provided as an applied service is compressed. 93. The information exchange method according to claim 91, wherein the compression changes a compression level in accordance with a processing capability of the terminal device and a communication capability of the communication network. 94. A recording medium used in an information processing apparatus for providing an application service to a terminal device connected via a communication network, the function of registering terminal attribute information indicating a processing capability of the terminal device, A function of acquiring terminal attribute information of a terminal device to be a communication partner from the terminal attribute information, and converting service information provided as an applied service into a specific format based on the terminal attribute information, and then transmitting the information through the communication network. Recording an information exchange program for realizing a function of transmitting a transmission error, a function of determining the type of the error when a line error occurs in the transmission, and a function of retransmitting the service information based on the error type. Computer readable storage medium. 95. A recording medium used in an information processing apparatus for providing an application service to a terminal device connected via a communication network, the function of registering communication infrastructure information indicating communication capability of the communication network, A function of acquiring communication infrastructure information of a communication network to which a terminal device as a communication partner is connected from the communication infrastructure information, and converting service information provided as an applied service into a specific format based on the communication infrastructure information. Thereafter, a function of transmitting via the communication network, a function of determining the type of the error when a line error occurs in the transmission, and a function of retransmitting the service information based on the error type are realized. A computer-readable storage medium on which an information exchange program for causing a computer to execute is recorded. 96. A recording medium used for an information processing apparatus for providing an application service to a terminal device connected via a communication network, wherein terminal attribute information indicating a processing capability of the terminal device is registered, and A function of registering communication infrastructure information indicating a communication capability of a communication network; acquiring terminal attribute information of a terminal device as a communication partner from the terminal attribute information; and communicating from the communication infrastructure information to which the terminal device is connected A function of acquiring communication infrastructure information of a network, a function of converting service information provided as an applied service into a specific format based on the terminal attribute information and the communication infrastructure information, and transmitting the information via the communication network. When a line error occurs in this transmission, a function of determining the type of the error and the service information based on the error type Computer-readable storage medium of information exchange program is recorded for realizing the function of processing. 97. In a system for providing application service information to terminal devices connected via a communication network, a program for realizing an information exchange function provided in a network connection device for interconnecting networks is recorded. A storage medium that, when transmitting service information provided as an applied service from the information processing device to the terminal device, a function of determining the processing capability of the terminal device on the network connection device side; A function for converting the service information into a specific format in response to the error, a function for determining the type of the error when a line error occurs in transmission, and a function for retransmitting the service information based on the error type are realized. A computer-readable storage medium on which an information exchange program for causing a computer to execute is recorded. 98. A system for providing an application service information to a terminal device connected via a communication network, wherein a program for realizing an information exchange function provided in a network connection device for interconnecting networks is recorded. A storage medium that, when transmitting service information provided as an applied service from an information processing device to a terminal device, determines a communication capability of a communication network to which the terminal device is connected; A function of converting the service information into a specific format, a function of determining the type of the error when a line error occurs in transmission, and a function of retransmitting the service information based on the error type. A computer-readable storage medium storing an information exchange program for realizing the program. 99. A system for providing application service information to terminal devices connected via a communication network, wherein a program for realizing an information exchange function provided in a network connection device for interconnecting networks is recorded. A storage medium that, when transmitting service information provided as an applied service from an information processing apparatus to a terminal device, determines a processing capability of the terminal device and a communication capability of a communication network to which the terminal device is connected. A function to convert the service information into a specific format according to its processing capability and communication capability; a function to determine the type of the line error when a line error occurs during transmission; A computer readable recording of an information exchange program for realizing the function of retransmitting service information憶媒 body. 100. A system comprising an information processing device for providing an application service to a terminal device connected via a communication network, wherein the second information processing device is connected to the communication network separately from the first information processing device. Provided in the first information processing apparatus, which is applied to a system in which a terminal attribute information management function is provided in the information processing apparatus and terminal attribute information indicating the processing capability of the terminal device is registered in the terminal attribute information management function. A storage medium storing a program for realizing an information exchange function to be used, wherein a function of searching for a second information processing device having the terminal attribute information management function is provided. A function of acquiring terminal attribute information of a terminal device as a communication partner from the terminal attribute information management function, and a service information provided as an applied service being specified based on the terminal attribute information. A function for converting the service information into a format, a function for transmitting the converted service information via the communication network, a function for determining the type of the error when a line error occurs in the transmission, A computer-readable storage medium storing an information exchange program for realizing a function of retransmitting the service information based on the information. 101. A system comprising an information processing device for providing an application service to a terminal device connected via a communication network, wherein the second information processing device is connected to the communication network separately from the first information processing device. A communication infrastructure information management function is provided in the first information processing apparatus, and the communication infrastructure information indicating the processing capability of the terminal device is registered in the terminal attribute information management function. A storage medium storing a program for realizing an information exchange function to be performed, a function of searching for a second information processing apparatus having the communication infrastructure information management function, and A function for acquiring communication infrastructure information of a communication network to which a terminal device as a communication partner is connected from the communication infrastructure information management function, and a service provided as an applied service. A function of converting the service information into a specific format based on the communication infrastructure information; a function of transmitting the converted service information via the communication network; A computer-readable storage medium storing an information exchange program for realizing a function of determining an error type and a function of retransmitting the service information based on the error type. 102. A system comprising an information processing device for providing an application service to a terminal device connected via a communication network, wherein the second information processing device is connected to the communication network separately from the first information processing device. A terminal attribute information management function and a communication infrastructure information management function are provided in the information processing apparatus, and terminal attribute information indicating the processing capability of the terminal device is registered in the terminal attribute information management function, and communication indicating the communication capability of the communication network is provided. A storage medium which stores a program for realizing an information exchange function provided in a first information processing apparatus and is applied to a system for registering infrastructure information in the communication infrastructure information management function, wherein the terminal attribute A function for searching for a second information processing device having an information management function and a communication infrastructure information management function; and a terminal attribute information for the second information processing device. A function to obtain terminal attribute information of a terminal device as a communication partner from a management function, a function to obtain communication infrastructure information of a communication network to which the terminal device is connected from the communication infrastructure information management function, and an application service. A function of converting the service information into a specific format based on the terminal attribute information and the communication infrastructure information; a function of transmitting the converted service information via the communication network; A computer-readable storage medium storing an information exchange program for realizing a function of determining the type of the error when the error occurs and a function of retransmitting the service information based on the type of the error. 103. storing program information for realizing the information exchange method according to any one of claims 56 to 93;
A computer-readable storage medium, which is mounted on an information processing device and operates.