JP2004363685A - Ubiquitous server system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily realize a service provision of information, etc., using a ubiquitous server realized by internet home electronics, etc. in a private scale. <P>SOLUTION: In response to the address inquiry from a client C, including a mail address as an identifier of an owner (manager), a name resolution system N informs the client C of an IP address (1.2.3.4) of a master server 1 (ubiquitous server) under the control of the owner. When the client C accesses the address to request a service, the ubiquitous server 1 provides the client C with a specified service. If the master server 1 cannot comply with the service request from the client, it requests other ubiquitous servers 2, 3 providing the requested service to provide the service, and the other ubiquitous server provides the requesting client C with the service. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ubiquitous server (Ubiquitous Server) that provides a service in response to a request from a client, and, for example, causes various electric / electronic devices such as an Internet home appliance and a home server computer under personal control to function as a ubiquitous server. To provide various services to clients.
[0002]
[Prior art]
Today, when the Internet has become widespread, the spread of the always-on environment, Internet home appliances, browser phones, etc. has led to clients who use these electric and electronic devices owned by individuals as ubiquitous servers to extract information from these ubiquitous servers and use them. The usage model that provides services is no longer a dream story.
[0003]
To achieve this, develop technology that allows clients to easily access network devices that they manage (ie, they own or are entrusted to manage), no matter where they are located. Has been requested. In addition, the client is also required to be able to access not only a device managed by himself / herself but also a device of another person to whom access is granted, such as an acquaintance.
Only when such a technology is realized will a ubiquitous network environment be accessible to ordinary users and easily constructed.
[0004]
With the construction of the ubiquitous network environment, for example, when a user (client) wants to check the contents of a refrigerator (Internet home appliance) at home in a supermarket, an information communication device (for example, a mobile phone) carried by himself / herself It is also possible to access a refrigerator at home from an information communication terminal installed in a supermarket or to obtain information on the type and amount of food stored therein from the refrigerator. Also, for example, when you want to watch a video of a home party shot by a friend, you can access the friend's video camera and acquire the video data stored there from the video camera Is done.
[0005]
Here, when constructing a ubiquitous network environment, name resolution means that enables a client to obtain the IP address of each ubiquitous server in order to access each ubiquitous server is one of the important elements.
As a name solving means, a system using mapping by a DDNS (Dynamic Domain Name System) or a hash function is known (see Patent Document 1 and Non-Patent Document 1).
[0006]
[Patent Document 1]
JP-A-2002-335269
[Non-patent document 1]
"Broadband Maniacs Use Dynamic DNS Service", [Search April 17, 2003], Internet <URL: http: // www. dslmaniacs. com / tsukaiikomu-dyndns. htm >
[0007]
[Problems to be solved by the invention]
To date, the scheme of providing information services based on DNS and HTTP in the World Wide Web has the following restrictions.
Restriction 1: The unit of the entity providing information is "host name",
Restriction 2: managing the association between the host name and the server address (IP address in the Internet) on the network;
Restriction 3: The user (client) receiving the service must know the host name in advance,
Constraint 4: Client specifies application protocol;
[0008]
These restrictions are not a problem when the entity that provides the information is an organization such as a company. They resolve the constraint 1 by acquiring a new host name (purchasing a domain name), resolve the constraint 2 by operating or commissioning the DNS independently, and register the URL with a search engine on the Internet. The restrictions 3 and 4 have been solved by letting the user know the host name and the application protocol by printing on a paper medium such as a business card or a pamphlet.
[0009]
However, when transmitting information using an Internet home appliance or a home server on an individual scale such as an individual or a small group, these restrictions become a major obstacle. In order to provide an information service, it is necessary to obtain a host name, and to maintain association with an IP address, it is necessary to perform difficult management using a service such as DDNS. Even if such a measure is adopted, it is also a difficult task how to transmit the host name to others or to memorize it by yourself.
[0010]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to easily provide services such as information on a personal scale using a ubiquitous server realized by Internet home appliances or the like.
More specifically, the present invention relates to, for example, controlling Internet home appliances at home, enjoying the contents of a friend's acquaintance's home server, accessing an address book of a forgotten mobile phone, an alarm clock and a rice cooker. The purpose of this is to make it possible to operate such a timer in any time and anywhere.
Further objects of the present invention will be apparent in the following description.
[0011]
[Means for Solving the Problems]
The present invention can be realized in various modes such as a ubiquitous server, a program for realizing a ubiquitous server by a computer, a service providing system using a ubiquitous server, a service providing method using a ubiquitous server, and the like.
Here, in the present invention, the administrator is an owner of the Internet home electric appliances (electric / electronic devices) constituting the ubiquitous server or a person having the authority to manage the same, and the client is the administrator himself or an access authorized. A person other than the administrator or an information communication device used by the person.
[0012]
In addition, Internet home appliances such as refrigerators and video cameras provide predetermined services such as provision of information on stored items to clients through a network in response to requests from clients, and address resolution with name resolution means and other ubiquitous servers. It also has a communication function for communicating services and services.
In the present invention, preferably, the Internet is used as a network, the manager's identifier is a mail address (or an identifier generated based on the mail address) of the manager, and the address of the ubiquitous server is its IP address. The above-mentioned restrictions are comprehensively solved by facilitating the management and dissemination of host names, but the network may be a closed one, and the identifier of the administrator and the ubiquitous server address may be changed by the user or the network. Various changes can also be made in response to implementation requirements, such as setting according to the setting of.
[0013]
According to the present invention, in response to an address inquiry from a client including an administrator identifier, the name resolution unit notifies the client of the address of a ubiquitous server under the management of the administrator, and the client accesses the address. Requesting a service, the ubiquitous server provides a predetermined service to the client in response to the service request.
Therefore, if the client knows the identifier such as the mail address of the administrator, the client can access the ubiquitous server and receive the service.
[0014]
Further, according to the present invention, a name resolution protocol and a service resolution protocol are provided when a plurality of ubiquitous servers for providing a predetermined service to the client in response to a service request from the client are provided. Notifies the address of the master server among the plurality of ubiquitous servers under the management of the administrator in response to the address inquiry from the client, and the master server provides the request service included in the service request from the client Requests service provision from another ubiquitous server, and provides the service provided by the other ubiquitous server to the requesting client.
Accordingly, the client can receive a service request from any one of the corresponding ubiquitous servers by making a service request to the master server among the plurality of ubiquitous servers.
[0015]
Further, the present invention also realizes a name resolution protocol and a service resolution protocol in a case where a plurality of ubiquitous servers for providing a predetermined service to the client in response to a service request from the client are provided by another method. The name resolution means notifies the address of the master server among the plurality of ubiquitous servers under the management of the administrator in response to the address inquiry from the client, and the master server includes a request included in the service request from the client. The requesting client is notified of the address of another ubiquitous server that provides the service.
Therefore, the client can access the corresponding ubiquitous server by the address notified from the master server and receive a desired service.
[0016]
Further, in the present invention, in order to resolve a name, in response to an address inquiry from a client including an identifier of an administrator, a name resolution unit for notifying the client of an address of a ubiquitous server under the management of the administrator is provided. The ubiquitous server inquires whether the address corresponding to the identifier of the administrator is registered, and if the address is not registered, associates the address with the identifier of the administrator for notification. To register in the name resolution means.
By such registration, the client can obtain the address of the ubiquitous server by referring to the name resolution means. However, when a plurality of ubiquitous servers are set as the master server among them, the master can be obtained. The registration in the name resolution means of the server is performed as described above.
[0017]
Further, in the present invention, the ubiquitous server refers to the name resolving means for an address already registered corresponding to the identifier of its own administrator for the notification, and transmits another ubiquitous address of the registered address. A server (ie, a master server) registers its own address and information on provided services, and the master server acts as a master server of a plurality of ubiquitous servers under the management of the same administrator, and registers the addresses of other ubiquitous servers with the master server. Manage information about the services provided.
Therefore, the master server can manage the services provided by the ubiquitous server together with the addresses of the other ubiquitous servers, as described above. A relay process to be provided or a transfer process to provide an address of a corresponding ubiquitous server is performed.
[0018]
Further, in the present invention, instead of one master server, a plurality of master servers may be set for a group including a plurality of ubiquitous servers. The present invention is particularly effective when only one master server is set. However, in the present invention, when another ubiquitous server monitors the operation status of the master server and the processing of the master server is hindered, the notification is performed. For this purpose, the user's address is registered in the name resolution means in association with the identifier of the administrator.
As a result, a group consisting of a plurality of ubiquitous servers is automatically restored to a normal state.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be specifically described based on examples.
In the present embodiment, electric and electronic devices such as refrigerators, video cameras, and mobile phones owned by a certain individual (owner) are provided with functions as ubiquitous servers, and services from these ubiquitous servers are transmitted to the Internet. It is provided to a client (owner or another authorized person) accessed by the information communication device via the Internet.
Note that electric and electronic devices such as refrigerators, video cameras, and mobile phones that constitute the ubiquitous server are Internet home appliances having a communication function for performing information communication via the Internet.
[0020]
FIG. 1 shows an overview of the overall configuration and processing of a ubiquitous server system according to the present example.
In the ubiquitous server system of this example, the refrigerator 1, the video camera 2, and the mobile phone 3 owned by the owner P are used as ubiquitous servers, respectively, and these three ubiquitous servers 1 to 3 are installed in a mobile computer or a store. The client C can be accessed via the Internet by a terminal computer or the like. The information terminal computers operated by the ubiquitous servers 1 to 3 and the client C can access the name resolution system N composed of DNS and distributed hash tables via the Internet.
[0021]
Note that the client C performs information communication using an information terminal computer or the like, but in the present specification, this is simply referred to as a client for convenience.
Further, the ubiquitous servers 1 to 3 may be configured by adding a dedicated circuit to the Internet home appliance, but in the present embodiment, the present invention is implemented by computer hardware such as a processor and a memory of the Internet home appliance. By executing the program according to the above.
[0022]
Each of the ubiquitous servers 1 to 3 has tables 1a, 2a, and 3a for storing initial setting values. When the owner P installs a new ubiquitous server, the ubiquitous server generates the ubiquitous server from a mail address as an identifier of the owner. In addition to the identifiers, authentication information used when updating registration information in the name resolution system N and authentication information used when exchanging addresses and service information between ubiquitous servers are stored by the user P in the tables 1a, 2a and 3a. Is set to
In FIG. 1, the tables 1a to 3a are described outside the ubiquitous servers 1 to 3 for convenience, but these initial setting tables 1a to 3a are stored in memories built in the ubiquitous servers 1 to 3. Be composed.
[0023]
Here, a method of generating an owner identifier from a mail address will be described.
In this example, since the character set that the domain name system (DNS) as a name resolution system allows as a host name is different from that allowed by the mail address, a conversion rule for converting the mail address to the host name is required. .
In this example, ・ Do not convert mail address after “＠”, ・ Convert “q” to “qq” before “＠”, ・ Change “＠” to “qo” before “＠” If there is a character that DNS does not allow before "$", convert it to "qxx" (xx is the hexadecimal code of the character), and apply the conversion rule. Then, an owner identifier used in the system of this embodiment is generated from the e-mail address.
[0024]
First, the registration processing to the name resolution system N by the ubiquitous server will be described.
When the ubiquitous servers 1 to 3 are powered on (or at regular intervals), the name resolution system N inquires via the Internet whether or not the name resolution system N holds an IP address corresponding to its own administrator identifier. . As a result, if the IP address has not been registered in the name resolution system N, it requests the system N to register the IP address in association with the owner identifier of its own IP address. The name resolution system performs a registration process in response to the request. In this registration, the authentication system which is initially set is used to maintain a system configuration management system.
[0025]
FIG. 2 shows an outline of a registration process of the refrigerator 1 as a first ubiquitous server in the system.
In this example, the refrigerator 1 is used as a master server. The master server registers its own IP address in the name resolution system N as described below, and manages the other ubiquitous servers in the address service table 1b. Perform maintenance. Note that the address service table 1b is a management table configured in the memory of the ubiquitous server 1, and a similar address service table is configured when another ubiquitous server is set as a master server.
In this example, the ubiquitous server that registers its IP address in the name resolution system N and manages the address service table 1b is called a master server, and one or more master servers exist for a single owner identifier. You may do so.
[0026]
In the registration of the master server, the refrigerator 1 inquires of the name resolution system N whether the IP address corresponding to the identifier of the owner P is held, confirms that the refrigerator 1 has not been registered yet, and notifies the system N of its own IP address. Request registration of address (1.2.3.4).
As a result, the IP address (1.2.3.4) of the refrigerator 1 is registered in the address management table Na of the name resolution system N in association with the identifier (mail address) of the owner P, as described later. The IP address (1.2.3.4) is returned in response to an inquiry from the client C using the identifier of the owner P.
[0027]
Further, the refrigerator 1 as a master server registers its IP address and service type in association with each other in order to manage the ubiquitous server incorporated in the ubiquitous server system in its own address service table 1b. That is, at this point, the own IP address (1.2.3.4) and “refrigerator” as the service type are registered in the address service table 1b.
The service type is information that defines the type of service (video, audio, address book, etc.) provided by each ubiquitous server so that clients with different purposes can automatically connect to the corresponding service. Thus, the contents of the service that can be provided by each ubiquitous server are specified. Note that one ubiquitous server may support a plurality of service types.
[0028]
Next, the registration processing of the second and subsequent ubiquitous servers will be described with reference to FIG. That is, in this example, a case will be described where another ubiquitous server (video camera 2) belonging to the same owner performs the registration process in a state where the master server (refrigerator 1) is already registered.
When the ubiquitous server 2 is turned on (or repeated every certain period), the ubiquitous server 2 inquires of the name resolution system N whether or not it holds an IP address corresponding to its own owner identifier. In response to the inquiry, the name resolution system N returns an already registered IP address (1.2.3.4) corresponding to the owner identifier to the video camera 2, and the video camera 2 It recognizes that an IP address other than its own IP address (8.9.0.1) has already been registered in N (that is, it is not a master server).
[0029]
Then, the video camera 2 connects to the IP address (1.2.3.4) returned from the name resolution system N via a network, and sends the ubiquitous server 1 (that is, the master server) its own IP address ( 8.9.0.1) and service type (video camera) registration.
The ubiquitous server 1 requested to register adds its IP address (8.9.0.1) and its service type (video camera) to its own address service table 1b in association with each other, and adds the new address. The obtained ubiquitous server 2 is put into management.
[0030]
In the communication between the ubiquitous servers, the system system is normally maintained by performing the two-way authentication using the authentication information stored at the time of the initial setting.
In addition, if an IP address is registered in the name resolution system N but there is no response from that address, or if two-way authentication with that address fails, in this example, a master server described later is used. The address registered in the name resolution system N is updated in the same procedure as the replacement process of the above, and the address service table is reconstructed to restore the normal operation by itself.
[0031]
Next, in the state where the master server 1 and the other ubiquitous servers 2 and 3 are registered in the name resolution system N as described above, a process when the client C requests service provision from the refrigerator 1 is shown in FIG. This will be described with reference to FIGS.
When attempting to use the service, the client C first transmits the owner identifier of the ubiquitous server to be used to the name resolution system N, and inquires the corresponding IP address. In response, the name resolution system N returns an IP address corresponding to the inquired owner identifier to the client C with reference to the address management table Na.
[0032]
That is, in this example, the client C obtains the IP address (1.2.3.4) of the refrigerator 1 which is the master server by the inquiry to the name resolution system N, and obtains the IP address (1.2.3.4). ) To send a service request.
The service request includes information specifying the service content to be requested and authentication information, and the master server 1 that has received the service request performs one of the processes shown in FIGS.
[0033]
The process shown in FIG. 4 is a case where the master server 1 provides a service to the client C by itself, and the master server 1 interprets a service request sent from the client C while referring to the address service table 1b. If the requested service is a service provided by the user, the client C is provided with a service of transmitting information such as the type and amount of items stored in the refrigerator to the client C.
On the other hand, as a result of interpreting the service request, if the requested service is not provided by the master server 1, either the relay process shown in FIG. 5 or the transfer process shown in FIG. If the service is not registered in 1b (that is, if the request is a service that cannot be provided by the ubiquitous server system as a whole), the client C is notified that the service cannot be provided. If the correct authentication is not obtained, the master server 1 notifies the client C of the denial of service provision.
[0034]
In the present invention, whether to perform the relay processing shown in FIG. 5 or the transfer processing shown in FIG. 6 may be arbitrarily set. In the relay processing, the master server 1 requests the other ubiquitous servers providing the requested service. Then, the master server 1 relays the service from the other ubiquitous server and transmits the service to the client C. In the transfer process, the master server 1 sends the IP address of the other ubiquitous server providing the requested service to the client C. In order to allow the client C to directly access the other ubiquitous server and receive the service.
[0035]
That is, in the relay processing shown in FIG. 5, the client C obtains the IP address (1.2.3.4) of the master server 1 from the name resolution system N, and designates a service for providing video data to the master server 1. When the request is transmitted, the master server 1 refers to the address service table 1b to specify that the ubiquitous server capable of providing the requested service is the video camera 2, and the master server 1 transmits the service request received from the client C to the video camera 2. 2 (ie, IP address (8.9.0.1)). The video camera 2 receiving this transmits the corresponding video data stored in response to the service request to the master server 1, and the master server 1 transmits the received video data to the requesting client C.
[0036]
In the transfer process shown in FIG. 6, similarly to the above, the master server 1 receives a service request designating a video data providing service from the client C, and the ubiquitous server capable of providing the requested service is the video camera 2. When the master server 1 identifies that there is, the master server 1 returns the IP address (8.9.0.1) of the video camera 2 to the client C. The client C accesses the video camera 2 using the received IP address (8.9.0.1) and transmits a service request, so that the video camera 2 responds to the request by storing the corresponding video data. To the client C.
[0037]
It should be noted that the service request includes information on the type and function of the terminal of the client C, and the master server 1 transmits the service request to another ubiquitous server that provides a service corresponding to the function of the client terminal C as the request source. Relay or transfer may be used. Specifically, in the example shown in FIG. 4, since the client terminal C is a service terminal device installed in a supermarket, the refrigerator 1 corresponding to the type and function of the client C performs an information providing service for the client C. In the examples shown in FIGS. 5 and 6, since the client terminal C is a television, the relay and transfer processes are performed so that the video camera 2 corresponding to the type and function of the client C performs an information providing service for the client C. You may make it so.
[0038]
Next, a process of changing the master server, which is performed when some kind of failure occurs in the master server 1, will be described with reference to FIG.
The ubiquitous servers 2 and 3 other than the master server 1 register the master server 1 in the address service table 1b at any time. If there is no response from the master server 1 during this registration, or if the authentication fails, the ubiquitous server registers its own IP address in the name resolution system N and performs processing to become the master server.
[0039]
That is, as described above, in a state where the master server (refrigerator 1) has already been registered, the second and subsequent ubiquitous servers 2 hold the IP addresses in the name resolution system N corresponding to their own owner identifiers. When the video camera 2 obtains an IP address (1.2.3.4) already registered corresponding to the owner identifier from the name resolution system N, the video camera 2 returns a response from the name resolution system N. It connects to the given IP address (1.2.3.4) and requests the master server 1 to register its own IP address (8.9.0.1) and service type (video camera).
[0040]
In this request, if there is a failure such as no response from the master server 1, the video camera 2 sends its own IP address (8 .9.0.1), and the name resolution system N updates the address management table Na accordingly. Then, the video camera 2 which has newly become the master server by registering its own IP address in the name resolution system N forms an address management table 2b in its own memory, and the other video cameras managed by the same owner. It manages the IP address and service type of the ubiquitous server.
[0041]
Here, as for the address service table 2b, a copy of the address service table 1b may be received in advance from the previous master server 1 and used, or the same as that shown in FIG. 2 or FIG. The address service table 2b may be newly created by the procedure.
[0042]
In the above description, one master server is set in a group of a plurality of ubiquitous servers. However, in the present invention, two or more ubiquitous servers in the group are set as master servers. It may be.
In the case where a plurality of master servers are set as described above, the processing may be performed as follows, for example.
[0043]
All master servers have equal functions and perform equal management, and clients and slave servers (ubiquitous servers other than the master server) can access any master server. That is, as described in the above embodiment, each master server has a function required as a master server such as an address service table, a slave server management function based on the table, a registration function to the name resolution system, and the like. In addition, it has a function of exchanging and sharing the contents of the address service table between the master servers.
[0044]
The service registration processing procedure by the ubiquitous server includes, for example, a case where the ubiquitous server obtains a list of master servers from the name resolution system, sequentially tries to connect to the master servers present in the obtained list, and succeeds in connection. Requests the connected master server to register (or update) its service, and sends a list of master servers that could not be connected. If all master servers could not be connected, the master server Should be registered in the name resolution system.
[0045]
In addition, as a client access procedure, for example, a list of master servers is acquired from the name resolution system, and successive attempts are made to connect to the master servers present in the acquired list. Request service provision from the server. At this time, the client records the information of the master server that could not be connected so far, transmits the recorded information to the master server that was able to connect, and the master server has another master that has a connection failure. Be able to understand the server.
[0046]
Also, as a procedure for updating the address of another master server by the master server, for example, as described above, the master server that has received the connection failure notification to the other master server attempts to connect to the master server where the connection failed. If the connection fails, that fact is recorded, and if the connection fails a certain number of times in succession, it is determined that the failed master server is not connected to the network, Request the server where the failure occurred to the name resolution system and delete the registration. At this time, if there is a slave server, it sends a request for promotion to the master server to any slave server, and the slave server that received the promotion request registers its own address in the name resolution system, thereby registering it. Set a new master server in place of the master server from which was deleted.
[0047]
【The invention's effect】
As described above, according to the present invention, the client owns (or uses) the identifier, such as the mail address of the administrator of the ubiquitous server, which can be easily known and easily set by others. A ubiquitous network environment in which a network device owned by an acquaintance (e.g., an acquaintance) can easily access and receive a desired service regardless of where the device is located can be easily and easily constructed by ordinary users.
[0048]
In particular, by using a mail address (or an identifier generated therefrom) as a key for name resolution as an administrator identifier as in the present invention, the following advantages can be obtained.
Each user does not need to remember a new identifier (such as a host name) because the mail address is already used as information for identifying an individual.
-It is possible to authenticate the owner by using the reply of the e-mail address.
It is possible to bundle multiple devices for a single identifier using a service resolution protocol.
-It is more user-friendly to assign to each administrator than to assign different identifiers to each device.
[0049]
Considering the relationship with a standard based on broadcast in a home LAN, the following advantages can be obtained according to the present invention.
The model in which access from the Internet is centrally controlled by a home gateway is based on the premise that all servers owned by individuals are connected to a home LAN. However, in reality, for example, digital cameras and digital video cameras are outside the home. It must be able to provide services in such an environment. According to the present invention, it is possible to continue to provide services even when a digital camera, a video camera, or the like is taken out of the home.
[Brief description of the drawings]
FIG. 1 is a diagram showing a ubiquitous server system according to one embodiment of the present invention.
FIG. 2 is a diagram illustrating registration processing of a ubiquitous server according to one embodiment of the present invention.
FIG. 3 is a diagram illustrating registration processing of a ubiquitous server according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating a process of providing a service to a client according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a process of providing a service to a client according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating a process of providing a service to a client according to an embodiment of the present invention.
FIG. 7 is a diagram for explaining a master server replacement process according to an embodiment of the present invention.
[Explanation of symbols]
1: Ubiquitous server (master server), 2, 3: Ubiquitous server,
1a-3a: Initial setting table, 1b, 2b: Address service table,
P: owner (administrator), C: client,
N: name resolution system, Na: address management table,

Claims (22)

A ubiquitous server system that provides a service possessed by a ubiquitous server in response to a request from a client,
Name resolution means for notifying the client of the address of the ubiquitous server under the management of the administrator in response to the address inquiry from the client including the identifier of the administrator;
A ubiquitous server that provides a predetermined service to the client in response to a service request from the client based on its own address;
A ubiquitous server system comprising: A ubiquitous server system that provides a service possessed by a ubiquitous server in response to a request from a client,
Name resolution means for notifying the client of the address of the ubiquitous server under the management of the administrator in response to the address inquiry from the client including the identifier of the administrator;
A plurality of ubiquitous servers that provide a predetermined service to the client in response to a service request from the client,
The name resolution means notifies an address of a master server among a plurality of ubiquitous servers under the management of the administrator in response to an address inquiry from the client,
The master server requests service provision from another ubiquitous server that provides the requested service included in the service request from the client, and provides the service provided by the other ubiquitous server to the requesting client. Ubiquitous server system. A ubiquitous server system that provides a service possessed by a ubiquitous server in response to a request from a client,
Name resolution means for notifying the client of the address of the ubiquitous server under the management of the administrator in response to the address inquiry from the client including the identifier of the administrator;
A plurality of ubiquitous servers that provide a predetermined service to the client in response to a service request from the client by its own address,
The name resolution means notifies an address of a master server among a plurality of ubiquitous servers under the management of the administrator in response to an address inquiry from the client,
A ubiquitous server system, wherein the master server notifies an address of another ubiquitous server that provides a requested service included in the service request from the client to the requesting client. A ubiquitous server system that provides a service possessed by a ubiquitous server in response to a request from a client,
Name resolution means for notifying the client of the address of the ubiquitous server under the management of the administrator in response to the address inquiry from the client including the identifier of the administrator;
A ubiquitous server that provides a predetermined service to the client in response to a service request from the client based on its own address,
The ubiquitous server inquires of the name resolution means whether or not the address corresponding to the identifier of its own administrator is registered. If there is no such registration, the ubiquitous server substitutes its own address for the notification with its own administrator. A ubiquitous server system characterized in that the ubiquitous server system is registered in the name resolution means in association with the identifier. A ubiquitous server system that provides a service possessed by a ubiquitous server in response to a request from a client,
Name resolution means for notifying the client of the address of the ubiquitous server under the management of the administrator in response to the address inquiry from the client including the identifier of the administrator;
A plurality of ubiquitous servers that provide a predetermined service to the client in response to a service request from the client by its own address,
The ubiquitous server refers to the name resolving means for the already registered address corresponding to the identifier of its own administrator for the notification, and sends its own registered address to another ubiquitous server. Register your address and information about the services provided,
The other ubiquitous server system, as a master server of a plurality of ubiquitous servers under the control of the same administrator, manages addresses of other ubiquitous servers and information on services provided by the other ubiquitous servers. The ubiquitous server system according to claim 5,
The other ubiquitous server monitors the operation status of the master server and, if a problem occurs in the processing of the master server, associates its own address with the identifier of its own administrator for the notification so as to resolve the name. A ubiquitous server system characterized in that the server is registered in the server. The ubiquitous server system according to any one of claims 1 to 6,
The administrator's identifier is an email address that the administrator has or an identifier created based on the email address,
A ubiquitous server system, wherein the address of the ubiquitous server is an IP address. The ubiquitous server system according to any one of claims 1 to 7,
A ubiquitous server system, wherein the ubiquitous server is configured as an electric / electronic device under the control of an administrator, and the electric / electronic device has a communication function used for registration or service provision performed by the ubiquitous server. . A method for providing a service possessed by a ubiquitous server in response to a request from a client,
The name resolution unit notifies the client of the address of the ubiquitous server under the management of the administrator in response to the address inquiry from the client including the identifier of the administrator,
A method wherein a client accesses by the notified address and receives a predetermined service from a ubiquitous server. A method for providing a service possessed by a ubiquitous server in response to a request from a client,
The name resolution means notifies the client of the address of the master server among the plurality of ubiquitous servers under the management of the administrator in response to the address inquiry from the client including the identifier of the administrator,
When the client makes a service request to the master server using the notified address,
The master server requests service provision from another ubiquitous server that provides the requested service included in the service request from the client,
A method, wherein the other ubiquitous server provides a requested service to a requesting client. A method for providing a service possessed by a ubiquitous server in response to a request from a client,
The name resolution means notifies the client of the address of the master server among the plurality of ubiquitous servers under the management of the administrator in response to the address inquiry from the client including the identifier of the administrator,
When the client makes a service request to the master server using the notified address,
The master server notifies the requesting client of the address of another ubiquitous server that provides the requested service included in the service request from the client,
A method wherein a client accesses a corresponding ubiquitous server by an address notified from the master server and receives a predetermined service. A method in which the ubiquitous server registers its own address in name resolution means for notifying the client of the address of the ubiquitous server under the management of the administrator in response to an address inquiry from the client including the identifier of the administrator. hand,
The ubiquitous server inquires of the name resolution means whether or not the address corresponding to the identifier of its own administrator is registered. If there is no such registration, the ubiquitous server substitutes its own address for the notification with its own administrator. And registering the name in the name resolution means in association with the identifier. A method in which the ubiquitous server registers its own address in name resolution means for notifying the client of the address of the ubiquitous server under the management of the administrator in response to an address inquiry from the client including the identifier of the administrator. hand,
The ubiquitous server refers to the name resolution means for the already registered address corresponding to the identifier of its own administrator, and to the other ubiquitous server of the registered address, the ubiquitous server relating to its own address and the provided service. Register the information,
The other ubiquitous server, as a master server of a plurality of ubiquitous servers under the management of the same administrator, manages addresses of other ubiquitous servers and information on services provided by the other ubiquitous servers. 14. The method according to claim 13, wherein
The other ubiquitous server monitors the operation status of the master server and, if a problem occurs in the processing of the master server, associates its own address with the identifier of its own administrator for the notification so as to resolve the name. A method characterized by registering in. A ubiquitous server that provides a service in response to a request from a client,
A name resolution means for providing a corresponding IP address registered in response to an inquiry based on the host name, the e-mail address of the own administrator or an identifier created based on the e-mail address as a host name of the own IP address Function to register
A function of providing a predetermined service to a client requesting a service by an IP address;
A ubiquitous server comprising: A ubiquitous server that provides a service in response to a request from a client,
A name resolution means for providing a corresponding IP address registered in response to an inquiry based on the host name, the e-mail address of the own administrator or an identifier created based on the e-mail address as a host name of the own IP address Function to register
A function to manage services provided by other ubiquitous servers under the management of the same administrator,
A function of requesting service provision to the other ubiquitous server that provides the specified service to a client that requests a service by an IP address by designating a service;
A ubiquitous server comprising: A ubiquitous server that provides a service in response to a request from a client,
A name resolution means for providing a corresponding IP address registered in response to an inquiry based on the host name, the e-mail address of the own administrator or an identifier created based on the e-mail address as a host name of the own IP address Function to register
A function of managing services provided by other ubiquitous servers under the management of the same administrator and their IP addresses,
A function of notifying the requesting client of the IP address of the other ubiquitous server that provides the specified service to the client that requests the service by specifying the service and using the IP address;
A ubiquitous server comprising: A ubiquitous server that provides a service in response to a request from a client,
The name resolution means for providing the corresponding IP address registered in response to the query based on the host name may include, as a host name, an e-mail address possessed by its own administrator or an identifier created based on the e-mail address as another ubiquitous A function for inquiring whether or not the server IP address is registered;
A function of registering information on its own IP address and the service provided to the other ubiquitous server;
A ubiquitous server comprising: A program for configuring a ubiquitous server that provides a service in response to a request from a client by a computer,
A name resolution means for providing a corresponding IP address registered in response to an inquiry based on the host name, the e-mail address of the own administrator or an identifier created based on the e-mail address as a host name of the own IP address Function to register
A function of providing a predetermined service to a client requesting a service by an IP address;
A program for implementing on a computer. A program for configuring a ubiquitous server that provides a service in response to a request from a client by a computer,
A name resolution means for providing a corresponding IP address registered in response to an inquiry based on the host name, the e-mail address of the own administrator or an identifier created based on the e-mail address as a host name of the own IP address Function to register
A function to manage services provided by other ubiquitous servers under the management of the same administrator,
A function of requesting service provision to the other ubiquitous server that provides the specified service to a client that requests a service by an IP address by designating a service;
A program for implementing on a computer. A program for configuring a ubiquitous server that provides a service in response to a request from a client by a computer,
A name resolution means for providing a corresponding IP address registered in response to an inquiry based on the host name, the e-mail address of the own administrator or an identifier created based on the e-mail address as a host name of the own IP address Function to register
A function of managing services provided by other ubiquitous servers under the management of the same administrator and their IP addresses,
A function of notifying the requesting client of the IP address of the other ubiquitous server that provides the specified service to the client that requests the service by specifying the service and using the IP address;
A program for implementing on a computer. A program for configuring a ubiquitous server that provides a service in response to a request from a client by a computer,
The name resolution means for providing the corresponding IP address registered in response to the query based on the host name may include, as a host name, an e-mail address possessed by its own administrator or an identifier created based on the e-mail address as another ubiquitous A function for inquiring whether or not the server IP address is registered;
A function of registering information on its own IP address and the service provided to the other ubiquitous server;
A program for implementing on a computer.

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