JP2003186814A - Film server system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a file server system capable of easily referring a file through an e-mail by means of a remote terminal of a user in the file server system storing an optional file of the user. <P>SOLUTION: A mail receiving portion 11 receives an acquisition request mail including file information which is provided to identify a targeted file to be forwarded. A mail analysis portion 12 takes out the file information included in a received mail. A file access processing portion takes out the information on the pertinent file stored in a file database 18. A mail transmitting portion 15 produces a return mail including a transmitting file which is read out, and transmits it to an address of a parson transmitted the acquisition request mail. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file server system, and more particularly to a file server system including a simple mobile terminal such as a mobile phone as a terminal for extracting a file.

[0002]

2. Description of the Related Art Conventionally, there has been considered a file server system capable of storing an arbitrary file in a file server and taking out a file stored in the server by a terminal. According to this, it is not necessary to use a recording medium such as a floppy (registered trademark) disk, a CD-ROM, or a memory card. Therefore,
Files can be stored and retrieved more conveniently for the user than when a recording medium is used.

As the above file server system,
It is common to use the FTP protocol. In this case, the file is transferred from the device having the FTP server function or the file server to the terminal implementing the FTP protocol via the network. The user logs in to the FTP server from the terminal that wants to retrieve the file using the user ID and password assigned in advance, and obtains the file using the FTP command.

[0004]

In the conventional file server system, the terminal for extracting a file needs to be equipped with special software such as the FTP protocol. However, most simple mobile terminals such as mobile phones do not have such special software. Therefore, many mobile terminals cannot retrieve files stored in the file server.

Therefore, an object of the present invention is to provide a file server system capable of acquiring a file from a file server via a network, even with a simple terminal without special software. To do.

[0006]

A first aspect of the present invention is a file server device capable of transmitting and receiving e-mail with a portable terminal requesting acquisition of a file and storing an arbitrary file. Based on the file information described in the acquisition request mail, and the file storage unit that stores the file, the mail reception unit that receives the acquisition request mail in which the file information necessary to identify the file is described from the mobile terminal, A file processing unit that determines a transmission file to be transmitted to the mobile terminal among the files stored in the file storage unit, and a mail transmission unit that transmits the transmission file to the mobile terminal by e-mail .

According to the first aspect of the present invention, the file server device determines the file requested by the mobile terminal for acquisition by the electronic mail transmitted from the mobile terminal, and transmits the file to the mobile terminal by electronic mail. . Therefore, the mobile terminal can acquire a desired file by sending and receiving an e-mail.

A second aspect of the present invention is an aspect according to the first aspect of the present invention, wherein the mail transmission unit determines the contents of the transmission file according to whether the transmission file has the same format as the description format of the electronic mail. Write it in the body of the email and send it,
Select whether to send the attached file as an e-mail.

According to the second aspect, when the transmission file has the same format as the description format of the electronic mail (for example, text format), the portable terminal receives the transmission file described in the body of the electronic mail.

A third aspect of the present invention is an aspect according to the second aspect of the present invention, wherein it is possible to determine whether or not the file stored in the file storage section can be converted into the description format of the electronic mail. The file processing unit further includes a file management information storage unit that stores information, and the file processing unit determines whether or not the transmission file can be converted into the email description format according to the conversion availability determination information, and a conversion availability determination unit. A file format that converts the send file to the same format as the email description format if the send file has a format different from the email description format and can be converted to the email description format according to the determination result of the availability determination unit It includes a conversion unit and a transmission file output unit that outputs the transmission file converted by the file format conversion unit to the mail transmission unit.

According to the third aspect, when the transmission file can be converted into the description format of the electronic mail, the portable terminal receives the transmission file described in the text of the electronic mail.

[0012] A fourth invention is an invention according to the second invention, and stores a terminal information storage unit for storing information for associating information for identifying the portable terminal with a data size receivable by the portable terminal. And by referring to the terminal information,
The file processing unit further includes a data size determination unit that determines a data size that can be received by the mobile terminal that is the transmission source of the acquisition request mail, and the file processing unit is configured to transmit the transmission file when the transmission file has the same format as the description format of the email. It includes a transmission file limitation output unit that limits the size of the file to the size determined by the data size determination unit and outputs the file to the mail transmission unit.

According to the fourth aspect of the invention, the content of the transmission file described in the body of the electronic mail is limited to a size that the portable terminal can receive. Therefore, when the content of the transmission file is described in the body of the mail, the mobile terminal does not receive the mail exceeding the receivable data amount.

A fifth aspect of the invention is an invention dependent on the fourth aspect of the invention, wherein the file information includes continuation acquisition determination information indicating whether or not to continuously acquire the transmission file. When the continuous acquisition determination information indicates that the continuous acquisition determination information is to be continuously acquired, the file restriction output unit outputs the transmission file from the portion subsequent to the previously output portion.

According to the fifth aspect, when the content of the transmission file is described in the body of the mail, the portable terminal can automatically receive the portion next to the previously received portion. That is, in the transmission file transmitted to the mobile terminal, the following content is transmitted in succession to the content transmitted last time.

[0016] A sixth invention is an invention subordinate to the first invention, wherein the file information includes search information serving as a keyword for searching a file, and the file processing unit is configured to search information. The file stored in the file storage unit is searched based on the above, and a search unit that selects a file that satisfies the search information and a transmission file determination unit that determines the file selected by the search unit as a transmission file. Contains.

According to the sixth aspect of the present invention, it is not necessary to accurately specify the file name of the acquisition request mail in the acquisition request mail.

A seventh aspect of the invention is an invention according to the sixth aspect, wherein the file processing section, if the result of the search by the search section indicates that there are a plurality of files satisfying the search information, the condition of the search information is satisfied. The transmission file determination unit further includes a list creation unit that creates a list of files satisfying
Only when there is a single file satisfying the search information as a result of the search by the search unit, the file selected by the search unit is determined as the transmission file, and in the mail transmission unit, the list creation unit creates the list of files. In this case, the list is transmitted by electronic mail instead of the transmission file.

According to the seventh aspect of the invention, as a result of the search, when the corresponding files are plural, the portable terminal receives the list of files.

An eighth invention is an invention according to the first invention, and stores a terminal information storing information for associating information for identifying the portable terminal with a file format processable by the portable terminal. And a return format determining unit that determines the format of the file corresponding to the mobile terminal that is the transmission source of the acquisition request mail as the return format of the transmission file by referring to the terminal information. , If the transmission file can be converted to the return format determined by the return format determination unit, the file format conversion unit that converts the description format of the transmission file into the return format, and the transmission file converted by the file format conversion unit are mailed. A transmission file output unit for outputting to the transmission unit is included.

According to the eighth aspect of the invention, the portable terminal can receive a file in a format that the portable terminal can process.

A ninth invention is a file server system including a file server device for storing an arbitrary file and a portable terminal capable of transmitting and receiving an electronic mail with the file server device, wherein the portable terminal is An acquisition request mail in which file information necessary for identifying a file requested to be acquired is described is transmitted to the file server device, and the file server device carries the file storage unit for storing the file and the acquisition request mail. A mail receiving unit that receives from the terminal, and a file processing unit that determines the transmission file to be transmitted to the mobile terminal among the files stored in the file storage unit based on the file information described in the acquisition request mail. And a mail transmission unit for transmitting the transmission file to the mobile terminal by electronic mail.

According to the ninth aspect of the invention, the file server device determines the file requested by the mobile terminal for acquisition by the electronic mail transmitted from the mobile terminal, and transmits the file to the mobile terminal by electronic mail. . Therefore, the mobile terminal can acquire a desired file by sending and receiving an e-mail.

The tenth aspect of the invention is to store an arbitrary file.
It is possible to send and receive e-mail with the file server device
It is a portable terminal that is compatible with the file server device.
Files needed to identify the file that you want to get
Send an email to send an acquisition request email containing information
Section and file information described in the acquisition request mail
File to be sent based on
Transmission sent by e-mail from the server device
And a mail receiving unit for receiving the file.

According to the tenth aspect of the invention, the portable terminal is
File is sent to the file server device by e-mail.
You can request to obtain In addition, the file
The server device requests the mobile device by e-mail.
Sent the file, and the mobile device requested the file
Can be received by email. Therefore,
The mobile terminal sends and receives e-mail to send the desired files.
You can get the file.

The eleventh invention is capable of transmitting and receiving electronic mail with a portable terminal requesting acquisition of a file,
A file providing method used in a file server device for storing an arbitrary file, wherein the file server device stores a file in advance and sends an acquisition request mail in which file information necessary for identifying the file is described. A mail receiving step of receiving from the mobile terminal, a file processing step of deciding a transmission file to be transmitted to the mobile terminal among the files stored in advance based on the file information described in the acquisition request mail, and the transmission A mail sending step of sending the file to the mobile terminal by electronic mail.

According to the eleventh aspect, the file server device determines the file requested by the mobile terminal for acquisition by the electronic mail transmitted from the mobile terminal, and transmits the file to the mobile terminal by electronic mail. . Therefore, the mobile terminal can acquire a desired file by sending and receiving an e-mail.

[0028]

1 is a block diagram showing the configuration of a file server system according to an embodiment of the present invention. In FIG. 1, the file server system includes a file server device 1, a network 2, and a mobile terminal 3. Although not shown, there are a plurality of mobile terminals 3. The file server device 1 is connected via a network 2 to a mobile terminal 3 having an e-mail transmission / reception function. The network 2 between the file server device 1 and the mobile terminal 3 may be wired, wireless, or a combination thereof, as long as it can transmit electronic mail. The file server device 1 also includes a mail receiving unit 11, a mail analyzing unit 12, a return information determining unit 13,
File processing unit 14, mail transmission unit 15, terminal information database 16, and file management information database 1
7 and a file database 18. The mobile terminal 3 acquires an arbitrary file by transmitting and receiving an electronic mail with the file server device 1 via the network 2. Hereinafter, the operation of the file server device 1 will be described in detail.

The mail receiving unit 11 receives an acquisition request mail transmitted from the mobile terminal 3 via the network 2. The received acquisition request mail includes file acquisition information for specifying a file to be transmitted to the mobile terminal 3.

FIG. 2 is a diagram showing an example of an acquisition request mail received from the mobile terminal by the mail receiving unit 11 in this embodiment. FIG. 2A is a diagram showing an example of an acquisition request mail when a file name is designated. Figure 2 (b)
FIG. 6 is a diagram showing an example of an acquisition request mail when a search is performed using a search character string and update date and time. As shown in FIG. 2, the acquisition request mail received by the mail reception unit 11 from the mobile terminal includes a file name, a password, a search character string, an update date and time, and continuous acquisition determination information as file acquisition information. Has been. The file name is the name of the file to be transmitted to the mobile terminal 3. The password is,
It is preset for each file and is required when retrieving the file. The search character string is a character string that consists of all or part of the file name, and is used when searching for the file name. Either one of the file name and the search character string may be included in the acquisition request mail. The update date and time represents the date and time when the file was last updated, and is used when searching for a file name. In the present embodiment, the above-mentioned search character string and update date and time are used as keywords for searching. The continuous acquisition determination information indicates whether or not to instruct to continuously acquire the file. In the present embodiment, when the size of the file is equal to or larger than the predetermined size, only a part of the file may be transmitted to the mobile terminal 3. However, the continuous acquisition determination information is the file content previously acquired by the user. If it is desired to acquire the next part, information indicating continuation is described.

The mail receiving unit 11 outputs the text of the acquisition request mail received from the mobile terminal 3 to the mail analyzing unit 12. Further, the mail receiving unit 11 identifies the electronic mail address of the mobile terminal 3 that is the transmission source based on the acquisition request mail, and outputs it to the return information determination unit 13 and the mail transmission unit 15 as the transmission source address.

The mail analysis unit 12 analyzes the acquisition request mail received by the reception mail unit. Specifically, the mail analysis unit 12 extracts the file acquisition information from the acquisition request mail. In the present embodiment, the file acquisition information is the above file name, password, search character string, update date and time, and continuous acquisition determination information. Email analysis unit 12
The file acquisition information extracted by is output to the file processing unit 14.

The return information determining section 13 is a mail receiving section 11
The return information is determined based on the source address input from. The return information is information that specifies the file format and data size when the file is returned in response to the acquisition request mail. The return information is determined by referring to the terminal information stored in the terminal information database 16.

FIG. 3 is a diagram showing an example of the terminal information stored in the terminal information database 16 in this embodiment. As shown in FIG. 3, the terminal information associates the source address with the return information. In the present embodiment, the return information includes a processable format and a size limit. The processable format indicates a file format that the mobile terminal can process. The size limit indicates the upper limit of the amount of data that can be transmitted to the mobile terminal. The processable format and the size limit specified based on the terminal information are output to the file processing unit 14.

The file processing unit 14 includes the mail analysis unit 12
File acquisition information input from and return information determination unit 1
A file access process is performed based on the return information input from 3. The details of the file access process will be described below.

FIG. 4 is a flow chart showing the flow of file access processing in the file processing unit 14 shown in FIG. The file access process is performed by the mail analysis unit 12
It is started by inputting the file acquisition information from, and the return information from the return information determining unit 13. First, the file processing unit 14 performs a file search process (step S1). The details of the subroutine step S1 will be described below.

FIG. 5 shows the subroutine step S1 of FIG.
3 is a flowchart showing the details of FIG. First, the file processing unit 14 determines whether a search is necessary (step S11). The determination in step S11 is performed depending on whether or not the file acquisition information input from the mail analysis unit 12 includes a file name. That is, when the file acquisition information includes the file name, the file processing unit 14 determines that the search is not necessary. on the other hand,
If the file acquisition information does not include the file name,
The file processing unit 14 determines that the search is necessary.

When it is determined in step S11 that the search is not necessary, the file processing unit 14 determines the file name included in the file acquisition information as the transmission file name (step S12), and the subroutine step S
The process 1 is ended. On the other hand, in step S11,
When it is determined that the search is necessary, the file processing unit 1
In step S13, the file is searched using the search character string. The process of step S13 is performed by referring to the file management information stored in the file management information database 17 using the search character string of the file acquisition information. The details of the file management information will be described below.

FIG. 6 is a diagram showing an example of the file management information stored in the file management information database 17 in this embodiment. As shown in FIG. 6, the file management information associates, for each file stored in the file database 18, a file number, a file name, a password, a format, convertibility, and an update date and time. is there. Here, the format indicates the format of the file, and the conversion availability indicates whether the file can be converted to the text format.

As described above, in step S13, the file search is performed using the search character string of the file acquisition information. For example, in the case of the acquisition request mail shown in FIG. 2B, the search character string is "Memo". Therefore,
From the file management information of FIG. 6, files having file names including the search character string are file numbers 01 and 02.
Becomes

After step S13 in FIG. 5, the file processing unit 14 determines whether or not there is a corresponding file as a result of the search in step S13 (step S14). If there is no corresponding file, the file processing unit 14 instructs the mail transmitting unit 15 to transmit an error mail (step S15), and ends the file access process.

On the other hand, if there is a corresponding file, the file hit in the search in step S13 is searched for the file by the update date and time (step S16). The process of step S16 is performed by referring to the file management information stored in the file management information database 17 using the update date and time of the file acquisition information. For example, in the case of the acquisition request mail shown in FIG. 2B, as described above, the files having the file name including the search character string are file numbers 01 and 02.
Is. Therefore, the search in step S16 is performed for the file numbers 01 and 02. Here, FIG.
In the case of the acquisition request mail shown in (b), the update date and time is 200
It is 0.09.02. Therefore, according to the file management information of FIG. 6, the file hit in the search of step S16 is the file of file number 02.

After step S16, the file processing unit 14
Determines whether or not there is a corresponding file as a result of the search in step S16 (step S17). If there is no corresponding file, the file processing unit 14 proceeds to step S
The process of 15 is performed, and the file access process is ended.
On the other hand, if there is a corresponding file, the file processing unit 1
4 performs the transmission information determination process (step S18), and ends the process of the subroutine step S1. Hereinafter, details of the transmission information determination process will be described.

FIG. 7 shows the subroutine step S1 of FIG.
8 is a flowchart showing details of No. 8. First, the file processing unit 14 determines whether or not there are a plurality of corresponding files as a result of the search in step S16 of FIG. 5 (step S181). When there is one corresponding file, the file processing unit 14 determines the retrieved file name as the transmission file name (step S182), and ends the processing of the subroutine step S18. On the other hand, when there are a plurality of applicable files, the file processing unit 14 creates a list of the applicable files and sends the list to the mail transmission unit 15
(Step S183), and the file access process is terminated. This is the end of the description of the search process shown in FIG.

Returning to the description of FIG. 4, after step S1, the file processing unit 14 performs a file format conversion process (step S2). The details of the file format conversion process will be described below.

FIG. 8 shows the subroutine step S2 of FIG.
3 is a flowchart showing the details of FIG. First, the file processing unit 14 reads the file determined as the transmission file in step S1 from the file database 18 (step S21). Next, the file processing unit 14
Performs an error check on file reading (step S22). Specifically, the file processing unit 14
If there is no corresponding file information in the file database 18, and if the password included in the acquisition request mail does not match the password included in the file management information stored in the file management information database 17, the file is Since it cannot be read, it is determined to be an error.

As described above, by checking the file access right with the password, it is possible to prevent unauthorized access to the file. In the present embodiment, the password is given to each file, but it is also possible to manage accessible users and assign a password to each user.

If it is determined in step S22 that there is an error, the file processing unit 14 instructs the mail transmitting unit 15 to transmit an error mail (step S23).
The file access processing ends. On the other hand, if it is determined that there is no error, the file processing unit 14 proceeds to step S
The file format of the transmission file read in 21 is checked (step S24). Specifically, the file processing unit 14 determines whether the file format of the read transmission file is the text format. The check in step S24 is performed by referring to the format included in the file management information in FIG.

When the file format is the text format in step S24, the file processing unit 14 performs the process of step S28. On the other hand, if the file format is other than the text format, the file processing unit 14 proceeds to step S2.
It is determined whether the transmission file read in 1 can be converted to the text format (step S2).
5). The determination in step S25 is performed by referring to the conversion availability included in the file management information in FIG.

When the conversion into the text format is impossible in step S25, the file processing section 14 outputs the transmission file read out in step S21 to the mail transmission section 15 without converting into the text format (step S26). ), And ends the file access process. on the other hand,
When the conversion into the text format is possible, the file processing unit 14 converts the transmission file read in step S21 into a text file (step S2).
7). The conversion in step S27 is performed by using a conversion program predetermined for each file format.

When the transmission file is in the text format in step S24, or when the transmission file is converted into the text format in step S26, the file processing unit 14 performs the file expansion processing (step S24).
28), the process ends. The details of the file expansion process will be described below.

FIG. 9 shows the subroutine step S2 of FIG.
8 is a flowchart showing details of No. 8. First, the file processing unit 14 determines whether or not the file acquisition request is continuous acquisition (step S281). The determination in step S281 is performed depending on whether or not the continuous acquisition determination information included in the file information of the acquisition request mail indicates continuation.

When it is determined in step S281 that the continuous acquisition is performed, the file processing unit 14 sets the file pointer to the head of the file (step S28).
2), the process of step S284 is performed. Here, the file pointer indicates the position where the expansion of the file into the mail body is started. On the other hand, if it is determined that it is not the continuous acquisition, the file processing unit 14 sets the file pointer to the position after the previous reading (step S28).
3), the process of step S284 is performed. Here, the information on the position of the file pointer after the previous reading is stored in the file database 18 in association with the file. In step S283, the setting position of the file pointer is determined by referring to the information of the previous read position of the file pointer stored in the file database 18.

Next, the file processing unit 14 outputs to the mail transmission unit 15 a predetermined data size from the position of the set file pointer in the transmission file in the text format (step S284). Here, the predetermined data size is determined according to the size restriction input from the return information determination unit 13 to the file processing unit 14. Furthermore, the file processing unit 14 uses the file database 18
The position information of the file pointer stored in is changed (step S285), and the process ends. Specifically, the file processing unit 14 changes the position information of the file pointer so as to indicate the position immediately after the portion output to the mail transmission unit 15 in step S284. As a result, when continuous acquisition is requested for the same file next time, the part next to the part read this time is transmitted. With the above, the file format conversion process of the file processing unit 14 is completed.

The mail transmitting unit 15 is the file processing unit 14.
Based on the information input from, the transmission mail is transmitted to the mobile terminal 3 which is the transmission source. From the file processing unit 14, an instruction to send an error mail, a list of files, data in text format, or a file other than text format is input to the mail transmission unit 15. When an instruction to send an error mail is input, the mail sending unit 15 determines a prepared error mail as a send mail. When the file list is input, the mail transmission unit 15 expands the input file list into the mail text to create a transmission mail. When text format data is input, file processing unit 1
4 develops the content of the input text format data in the mail body to create a transmission mail. If a file other than text format is input, create an outgoing mail with the input file attached. Email transmitter 15
Sends the outgoing mail created as described above to the mobile terminal 3. Note that, as described above, the electronic mail address of the mobile terminal 3 is input from the mail receiving unit 11.
The mobile terminal 3 is transmitted from the file server device 1.
Receive outgoing mail. By the above, the mobile terminal 3
Can acquire any file by sending an acquisition request mail.

As described above, according to the present embodiment, the mail transmission unit 15 expands the contents of the file in the body of the mail when the transmission file is in text format, and when the transmission file is in other than text format, Attach the send file to the email. This allows the user to refer to the file content as the mail body when extracting the text file. If the content of the send file is described in the email body, an application for viewing the file is not required. Therefore, the user can easily refer to the file even with a simple terminal such as a mobile phone as long as it is a simple memo file.
Even when the description format of the electronic mail is other than the text format, the same effect can be obtained by converting the format of the transmission file to the same format as the description format of the electronic mail as described above.

Further, in this embodiment, step S in FIG.
In step S25, it is determined whether or not the file can be converted into the text format, and in step S27 in FIG. 8, the transmission file is converted into the text format. As a result, the transmitted file is expanded in the body of the email and transmitted as much as possible, so that the user can refer to the file more easily.

Further, in the present embodiment, in step S284 of FIG. 9, when the transmission file is expanded in the mail text, the amount of data for expanding the transmission file to a size receivable by the portable terminal used for file extraction. To limit. As a result, the file can be referred to even by a mobile terminal such as a mobile phone having a small reception memory.

Further, in this embodiment, the position information of the file pointer is stored in step S285. As a result, the file server device can read the next part transmitted last time. Therefore,
The user can acquire the next content of the previously acquired file content.

Further, according to the present embodiment, the transmission file search process is performed in step S1 of FIG. This allows the user to read out the desired file without specifying the correct file name. In addition,
In the present embodiment, the search character string is searched for the file name. However, in another embodiment, the search character string for the search is set when the file is registered, and the file management unit 13 stores it as file information. It is also possible to save and perform a search using this search character string. Further, regarding the date and time search, in the present embodiment, the matching file is output as the search result, but in other embodiments, the file after the designated date and time may be output as the search result.

Further, in the present embodiment, in step S183 of FIG. 7, if there are a plurality of applicable files as a result of the search, a list of files is transmitted. If there are many corresponding files as a result of the search, if the files themselves are transmitted, the amount of data to be transmitted becomes very large. In this case, a mobile terminal having a small reception memory such as a mobile phone cannot acquire all the transmitted files. As described above, it is possible to prevent a large number of files from being transmitted by transmitting the list of files and prompting the user to search again or specify the file name.

Further, in this embodiment, step S in FIG.
In step S25, it is determined whether or not the file can be converted into the text format, and in step S27 in FIG. 8, the transmission file is converted into the text format. Here, in another embodiment, the format of the transmission file may be converted into a format that can be processed by the mobile terminal that acquires the transmission file, instead of the description format of the electronic mail, that is, the text format. For example, if the word processing A document and the word processing B document are compatible and can be converted, the word processing A document format may be converted to the word processing B document format. In this case, by converting the file format according to the sender address of the acquisition request mail, the file can be returned in a format suitable for the user's takeout terminal. Therefore, it is possible to prevent the file from being invisible because the mobile terminal does not have an application conforming to the format of the transmission file.

In the file server system according to this embodiment, the terminal information stored in the terminal information database 16 and the file management information database 1
The file management information stored in 7 is registered in advance. Here, the terminal information and the file management information may be registered as long as they can communicate with the file server device 1. That is,
In addition to the mobile terminal 3, the above registration may be performed, for example, by a home personal computer. Furthermore, the registration of the files stored in the file database 18 is
The method is not limited to the method using the electronic mail, and may be the method using the FTP as long as the terminal implements the FTP protocol.

In this embodiment, the file is specified by using the file name, but it is also possible to assign a unique ID when registering the file and specify the ID to read the file. is there. Further, in the present embodiment, the return information determination unit 13 determines the return information by using the sender address, that is, the address of the electronic mail. Here, the return information determining unit 13 may determine the return information based on other information as well as the source address as long as the information can identify the mobile terminal. For example, the return information may be determined by describing a predetermined user name or user number in the acquisition request mail and identifying the mobile terminal by the user name or user number.

[0065]

As described above, according to the present invention, the file to be transmitted to the mobile terminal is determined based on the electronic mail received from the mobile terminal. It is possible to provide a file server device that can refer to files.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a file server system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of an acquisition request mail received by a mail receiving unit 11 in the present embodiment from a mobile terminal.

FIG. 3 is a terminal information database 16 according to this embodiment.
It is a figure which shows an example of the terminal information stored in.

4 is a flowchart showing a flow of file access processing in a file processing unit 14 shown in FIG.

5 is a flowchart showing details of a subroutine step S1 of FIG.

FIG. 6 is a diagram showing an example of file management information stored in a file management information database 17 according to the present embodiment.

FIG. 7 is a flowchart showing details of a subroutine step S18 of FIG.

FIG. 8 is a flowchart showing details of a subroutine step S2 of FIG.

9 is a flowchart showing details of a subroutine step S28 of FIG.

[Explanation of symbols]

1 File server device 2 network 3 mobile terminals 11 Email receiver 12 Email analysis section 13 Return information determination unit 14 File processing unit 15 Email sending part 16 Terminal information database 17 File management information database 18 file database

Claims (11)

[Claims] 1. A file server device capable of transmitting and receiving e-mail with a portable terminal requesting to acquire a file, storing a file, including a file storage unit for storing the file, and a file storage unit for storing the file. A mail receiving unit that receives an acquisition request mail in which file information necessary for identification is described from the mobile terminal, and is stored in the file storage unit based on the file information described in the acquisition request mail. A file processing unit that determines a transmission file to be transmitted to the mobile terminal among the stored files, and a mail transmission unit that transmits the transmission file to the mobile terminal by e-mail. 2. The mail sending unit writes the contents of the send file in the body of the email and sends the contents, or sends the contents depending on whether the send file has the same format as the description form of the email. The method according to claim 1, wherein it is selected whether the file is attached to an e-mail and sent.
The file server device described in 1. 3. A file management information storage unit for storing conversion propriety determination information indicating whether the file stored in the file storage unit can be converted into a description format of an electronic mail, and the file The processing unit, according to the conversion availability determination information, a conversion availability determination unit that determines whether the transmission file can be converted into the description format of the email, and the transmission file according to the determination result of the conversion availability determination unit. Is a format different from the description format of the email and can be converted to the description format of the email, a file format conversion unit that converts the transmission file to the same format as the description format of the email, and the file format The file according to claim 2, further comprising: a transmission file output unit that outputs the transmission file converted by the conversion unit to the mail transmission unit. The server device. 4. A terminal information storage unit that stores terminal information that associates information for identifying a mobile terminal with a data size that can be received by the mobile terminal, and the acquisition request mail by referring to the terminal information. And a data size determination unit that determines a data size that can be received by the mobile terminal that is the transmission source of the transmission file, the file processing unit, when the transmission file has the same format as the description format of the email, the transmission file The file server device according to claim 2, further comprising: a transmission file restriction output unit that limits the size to the size determined by the data size determination unit and outputs the file to the mail transmission unit. 5. The file information includes continuation acquisition determination information indicating whether or not to continuously acquire the transmission file, and the transmission file restriction output unit is configured to continue the continuation acquisition determination information. The file server device according to claim 4, wherein, in the case of indicating that the file is to be acquired, the file is output from a part next to the part output last time in the transmission file. 6. The file information includes search information serving as a keyword for searching a file, and the file processing unit searches for a file stored in a file storage unit based on the search information. The file server device according to claim 1, further comprising: a search unit that selects a file that satisfies the condition of the search information and a transmission file determination unit that determines the file selected by the search unit as a transmission file. 7. The file processing unit further includes a list creation unit that creates a list of files that satisfy the search information if a plurality of files satisfy the search information as a result of the search by the search unit. Including, the transmission file determination unit determines the file selected by the search unit as a transmission file only when there is a single file satisfying the search information as a result of the search by the search unit, and the mail transmission unit Is characterized in that, when the list creation unit creates a list of files, the list is transmitted by electronic mail instead of the transmission file.
The file server device according to claim 6. 8. A terminal information storage unit that stores terminal information that associates information for identifying a mobile terminal with a file format that can be processed by the mobile terminal, and the acquisition request by referring to the terminal information. The file format corresponding to the mobile terminal that is the sender of the mail is further provided with a return format determination unit that determines the return format of the transmission file, the file processing unit, the transmission file by the return format determination unit When it is possible to convert to the determined return format, a file format conversion unit that converts the description format of the transmission file to the return format, and the transmission file converted by the file format conversion unit to the mail transmission unit The file server device according to claim 1, further comprising: 9. A file server system including a file server device for storing an arbitrary file and a mobile terminal capable of transmitting and receiving an electronic mail to and from the file server device, wherein the mobile terminal is the file. The server device transmits an acquisition request mail in which file information necessary for identifying a file requested to be acquired is described, and the file server device includes a file storage unit for storing a file and the acquisition request mail. Among the files stored in the file storage unit, the transmission file to be transmitted to the mobile terminal based on the mail reception unit received from the mobile terminal and the file information described in the acquisition request mail. A file processing unit that determines the transmission file, and transmits the transmission file to the mobile terminal by email. And a mail sending unit, the file server system. 10. A file server for storing an arbitrary file.
A mobile device that can send and receive e-mail to and from a server device
And A file requesting acquisition to the file server device
File that describes the file information required to identify
An email sending unit that sends a profit request email, The file information described in the acquisition request email
File is determined based on the
It will be sent by e-mail from the file server device.
Equipped with an e-mail receiving unit that receives the sent file.
Obi terminal. 11. A file providing method, which is used in a file server device for storing an arbitrary file, capable of transmitting and receiving an electronic mail to and from a portable terminal requesting acquisition of a file, wherein the file server device comprises: A step of receiving an acquisition request mail in which a file is stored in advance and file information necessary for identifying the file is described from the mobile terminal, and the file information described in the acquisition request mail A file processing step of deciding a transmission file to be transmitted to the mobile terminal among the files stored in advance, and a mail transmission step of transmitting the transmission file to the mobile terminal by e-mail. A method for providing a file, comprising: