JP2002288154A - Data exchange method, data exchange system, data exchange processing program, terminal device, and server - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to exchange document contents with higher grade of flexibility between different types of terminal devices. SOLUTION: In a document exchange system 1, each terminal device selects only necessary factors from the factors in a document file to be exchanged according to respective processing power of own device and saves them. Consequently, it is not necessary to prepare the document contents to be exchanged by inter-terminal communications so as to fit to the terminal device having maximum restrictions, and the contents of the document to be exchanged can be made more flexible. For a terminal device accessible to a server 70 through the Internet 80, even when a part of the document file received via inter-terminal communication is deleted, a complete document file can be obtained by downloading the original document file stored in the server and the documents having the content fitted to the processing power of own device can be reviewed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data exchange method, a data exchange system, a data exchange processing program, a terminal device, and a server capable of transmitting and receiving data between a plurality of devices.

[0002]

2. Description of the Related Art In recent years, with the improvement of the network environment,
Document files are exchanged between different types of terminal devices. For example, a PC (Personal Compute
r), the document created in step (d) is transmitted to the mobile phone via the network, and the document file is browsed on the destination mobile phone.
Digital Assistants) send and receive documents directly to view them.

Here, in order to realize data exchange between terminal devices of different types, an XML (eXtensible Marble) is used.
kup Language). XML
The tag language of, for example, embeds a document structure or the like in text using a symbol called a tag, thereby enabling a document to be created in a common document format independent of the type of terminal device.

[0004]

However, even when the document format of the document file is made common and can be browsed by different types of terminal devices, the hardware environment of each terminal device, for example, a CPU (Central Process
ng Unit), OS (Operating System), application types, and the like are different, so that the size and contents of documents that can be browsed on each terminal device are different. Therefore, when exchanging document files between a plurality of terminal devices of different types, it is necessary to create a document adapted to a terminal device having greater restrictions. In other words, when creating a document, a format that can be browsed even on the most restrictive terminal device, such as a file system having a small size and a small display size that is not suitable for displaying a large number of documents. You need to create a document with

Further, if the hardware environment of the terminal device for exchanging document files cannot be specified, a document is created in conformity with the condition with the largest possible constraint. In the case where the content of the document file is adapted to the terminal device having the largest restriction as described above, the content of the document to be exchanged is restricted even in a terminal device having less restrictions, that is, a higher-performance terminal device. There was a problem that they could not fully demonstrate their abilities. Further, this has led to a situation in which the efficiency in document exchange is reduced.

It is an object of the present invention to enable more flexible exchange of document content between different types of terminal devices.

[0007]

Means for Solving the Problems In order to solve the above problems, the invention according to claim 1 comprises a plurality of terminal devices (for example,
This is a data exchange method for exchanging document data between the PCs 10 and 20 and the small portable device 30 and the projector 40 shown in FIG. 1, wherein a predetermined attribute is set for each element of the exchanged document data. When exchanging the document data between the terminal devices, an element suitable for the terminal device on the receiving side among the elements included in the document data can be used based on the predetermined attribute.

According to a sixth aspect of the present invention, there is provided a data exchange system capable of exchanging document data between a plurality of terminal devices, wherein a predetermined attribute is set for each element of the exchanged document data. The terminal device on the receiving side of the document data,
When exchanging the document data between the terminal devices, it is possible to use, from the respective elements included in the document data, an element suitable for the own device, based on the predetermined attribute.

According to a seventh aspect of the present invention, there is provided the data exchange system according to the sixth aspect, wherein the terminal device on the receiving side receives the document data from another terminal device. , An inter-terminal communication unit 101 in FIG. 6),
A data content analysis means for analyzing the content of the document data (for example, the structure analysis unit 102 in FIG. 6); and a priority determination means for determining an element suitable for the own device based on an analysis result of the data content analysis means. (For example, 104 in FIG. 6)
And an element content correction unit (for example, the element content correction unit 106 in FIG. 6) that can correct the content of a predetermined element based on the determination result of the priority determination unit,
An element suitable for each terminal device among the elements included in the document data can be used.

According to a second aspect of the present invention, there is provided the data exchange method according to the first aspect, wherein the original data of the document data is stored in a predetermined server (for example, the server 70 in FIG. 1), and the document to be exchanged is stored. The data includes the address of the original data (for example, the URL of the server 70 included in the document file), and the terminal device accesses the address included in the document file received by the terminal-to-terminal communication to access the original data. Can be obtained.

The invention according to claim 9 further includes a server for storing the original data of the document data, the exchanged document data includes an address of the original data, and the terminal device includes a terminal device. Server access means capable of accessing the server by referring to the address included in the document file received by the inter-communication means, wherein the terminal device can acquire original data of the document data as necessary It is characterized by having.

The invention described in claim 3 is the first or second invention.
In the data exchange method described above, when performing the terminal-to-terminal communication, a terminal device serving as a document data receiving side transmits to a terminal device serving as a document data transmitting side information relating to its own document data processing capability (eg, , A reference priority set in the terminal device or a content type that can be processed), and the terminal device on the transmitting side transmits a predetermined element in the document data to the receiving side on the basis of information on the processing capability. To the terminal device.

According to an eighth aspect of the present invention, in the data exchange system according to the sixth or seventh aspect, the receiving-side terminal device relates to the transmitting-side terminal device with respect to its own document data processing capability. Information is transmitted, and the transmitting terminal device transmits a predetermined element in the document data to the receiving terminal device based on the information on the processing capability.

According to a fourth aspect of the present invention, in the data exchange method according to any one of the first to third aspects, the predetermined attribute is information indicating a priority of each element included in the document data. . The invention according to claim 10 is the invention according to claims 6 to 9
The data exchange system according to any one of the above, wherein the predetermined attribute is information indicating a priority of each element included in the document data.

According to a fifth aspect of the present invention, there is provided the data exchange method according to any one of the first to third aspects, wherein the predetermined attribute is information indicating a type of the content of each element included in the document data. is there. The invention according to claim 11 is the same as the claim 6.
The data exchange system according to any one of claims 1 to 9,
The predetermined attribute is information indicating a type of content of each element included in the document data.

According to a twelfth aspect of the present invention, there is provided a data exchange processing program for a terminal device in a data exchange system capable of exchanging document data between a plurality of terminal devices, wherein the document data is transmitted from another terminal device. An inter-terminal communication function for receiving, a data content analysis function for analyzing the content of the document data, a priority determination function for determining an element suitable for the own device based on an analysis result of the data content analysis means, An element content correction function capable of correcting the content of a predetermined element based on the determination result of the priority determination means, and causing the computer to execute the Make the element available.

Furthermore, a thirteenth aspect of the present invention is a terminal device for a data exchange system according to the sixth to eleventh aspects. The invention according to claim 14 is the invention according to claims 9 to 11.
A server for the described data exchange system. According to the present invention, each terminal device can select and use only necessary elements among the elements of the exchanged document data according to the processing capability of the terminal device. Therefore, the content of the exchanged document is not restricted by the capability of each terminal device, and the content of the exchanged document can be made more flexible. For this reason, it is possible to prevent a situation in which the efficiency in document exchange is reduced, and it is possible to appropriately utilize the processing capacity of each terminal device.

Further, claim 2, claim 9, and claim 1
According to the invention described in Item 3, since the server stores the original document data, each terminal device can access the server completely even when a part of the received document data is deleted. It is possible to acquire document data having a proper content, and to use a document having a content suitable for the processing capability of its own device.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a document exchange system according to the present invention will be described in detail with reference to the drawings. First, the configuration will be described. FIG. 1 is a network configuration diagram of the document exchange system 1. 1, the document exchange system 1 includes PCs 10 and 20, a small portable device 30, a projector 40, a smartphone 50, a card-type information device 60, a server 70, and the Internet 80. Documents A and a to e in FIG.
Indicates a document exchanged between the devices.

The PCs 10 and 20, the small portable device 30, the projector 40, the smartphone 50, and the card-type information device 60 are terminal devices having a terminal-to-terminal communication function between the devices. Is a server 70 via the Internet 80
It is configured to be able to communicate with. Hereinafter, with respect to these terminal devices, the small portable device 30 will be described as a representative device having only the terminal-to-terminal communication function.
The PC 10 will be described as a representative of a device that can also communicate with the server 70 via the PC 10.

FIG. 2 is a block diagram showing a hardware configuration of the PC 10. As shown in FIG. In FIG. 2, the PC 10 has a CP
U (Central Processing Unit) 11 and memory 12
, File system 13, terminal-to-terminal communication interface 14, network interface 15, I
An I / O controller 16, an I / O device 17, a display controller 18, and a display device 19 are provided.

The CPU 11 controls the entire PC 10 and reads and executes programs related to various processes stored in the file system 13 in accordance with various instruction signals input from the I / O device 17. For example, CP
When receiving a document file from another terminal device such as the small-sized device 30, the U11 executes a document file receiving process, and displays the contents of the received document file in conformity with the settings of the own device. Then, the CPU 11 stores the processing results of executing the various programs in a predetermined area of the memory 12 or the file system 13 or causes the display device 19 to display the processing results.

The memory 12 temporarily stores various data generated in various processes executed by the CPU 11. The file system 13 is a non-volatile storage device (storage medium) such as a hard disk device or a flash ROM.
It consists of. The file system 13 stores a program for a document file receiving process and a program for various processes for controlling the PC 10.

The terminal-to-terminal communication interface 14 is Ir
It is a communication interface such as DA (Infrared Data Association) and Bluetooth (Bluetooth).
Various data instructed to be transmitted from U11 are subjected to data conversion processing into a predetermined format for performing terminal-to-terminal communication, and output to another terminal device such as the small portable device 30. Also,
The terminal-to-terminal communication interface 14 performs a predetermined data conversion process on a signal received from another terminal device,
11 is output.

The network interface 15 is an Ethernet (registered trademark) adapter (Ethernet).
(Registered trademark) or a communication interface such as a modem for dial-up connection.
Various data instructed to be transmitted from U11 are subjected to data conversion processing into a predetermined format for transmission via the Internet 80 and transmitted to the server 70. The network interface 15 is connected to the Internet 80
A predetermined data conversion process is performed on the signal received via the CPU 11 and the signal is output to the CPU 11.

The I / O controller 16 is used for the I / O device 1
The input of the signal input from the CPU 7 to the CPU 11 is controlled. The I / O device 17 includes a key switch, a touch panel, or a pointing device such as a mouse, and outputs a key switch pressing signal and a pointing device position signal to the CPU 11 via the I / O controller 16.

The display controller 18 controls output of display data displayed on the display device 19 to the display device 19. The display device 19 includes, for example, a dot matrix type color liquid crystal display cell or a CRT (Cathode Ray Tube).
And displays various data input from the display controller 18.

The device for browsing the document may be a printing device or the like in addition to the display device, and the content of the document file may be printed and browsed. Next, the hardware configuration of the small portable device 30 will be described. FIG.
3 is a block diagram illustrating a hardware configuration of the small portable device 30. FIG. The hardware configuration of the small portable device 30 is as follows.
The configuration is the same as that of the PC 10 except that the network interface 15 is not included. Therefore, the configuration of each part is referred to the description of each part of the PC 10, and the description is omitted.

The server 70 is a general Web server, stores a document file transmitted from a terminal device such as the PC 10, and transmits the document file in response to an access to the document file from any terminal device. I do. In the document exchange system 1, a document of a predetermined format created in a terminal device such as the PC 10 is exchanged.

FIG. 4 is a diagram showing an example of the contents of a document exchanged in the document exchange system 1. In FIG. 4, documents to be exchanged are document data having a tree structure described based on XHTML Basic.
Note that the language for describing the document data can be described in another language that does not depend on the type of the terminal device (such as a language based on XML such as XHTML 1.0). Then, this document contains the URL (Uniform
An “alternate” attribute indicating a Resource Locator is set, and each element of the document has a “priority (prio
rity) "attribute is set (see FIG. 5). This priority is an attribute indicating the priority in the display of each element, and each terminal device has a priority set according to its own capability. It is determined whether or not each element in the document file is to be displayed, where “element” is a component of the document sandwiched between a start tag and an end tag in the document file. The document file has a tree structure such that elements below are hierarchically included.Elements of each layer are hereinafter referred to as "branches" as appropriate.

Next, the functional configuration of the PC 10 and the small portable device 30 for exchanging the document files shown in FIG. 4 with the above hardware configuration will be described. FIG.
FIG. 2 is a block diagram showing a functional configuration of the PC 10. FIG.
In the PC 10, the inter-terminal communication unit 101, the structure analysis unit 102, the network communication unit 103, the priority evaluation unit 104, the priority instruction unit 105, the element content correction unit 106, the element storage unit 107, It is comprised including.

The terminal-to-terminal communication unit 101 is mainly constituted by the CPU 11 and the terminal-to-terminal communication interface 14.
A document file is transmitted / received to / from another terminal device. The terminal-to-terminal communication unit 101 outputs the received document file to the structure analysis unit 102. The structure analysis unit 102 is mainly configured by the CPU 11 and analyzes the tree structure of the document file and the “priority” attribute of each element.
The URL indicated in the “alternate” attribute is extracted.

When the structure analysis unit 102 analyzes the document file and finds that the content of the received document file includes a deleted portion, the structure analysis unit 102 accesses the server 70 by referring to the extracted URL, and Download the file (the document file stored by the document creator) and analyze the downloaded document file again. Then, the structure analysis unit 102 outputs the analysis result of the document file to the priority evaluation unit 104. Note that whether or not there is a part deleted in the contents of the document file is determined by referring to identification information (“modified” attribute) described later.

The network communication unit 103 mainly includes a CPU
When the structure analysis unit 102 accesses the server 70, the structure analysis unit 102 communicates with the server 70 via the Internet 80. That is, the network communication unit 103, based on the URL input from the structure analysis unit 102,
When a document file transmission request is transmitted to the device and the document file is received, the document file is output to the structure analysis unit 102.

The priority evaluation section 104 is mainly constituted by the CPU 11, and based on a reference priority input from a priority instructing section 105, which will be described later, and an analysis result input from the structure analysis section 102, its element ( It is determined whether to save the branch, to modify and save the contents of the element (branch), or to discard all the elements (branch). Then, the priority evaluation unit 104
The element determined to store the element is output to the element storage unit 107 without changing the content, and the element determined to correct the content of the element and stored is output to the element content correction unit 106. Then, the priority evaluation unit 10
When the element having the corrected content is input from the element content correction unit 106, the element 4 outputs the element to the element storage unit 107. If the priority evaluation unit 104 determines that all the elements are to be discarded, the priority evaluation unit 104 deletes all the elements.

Here, when there is an element (branch) in which a part of the element is modified (deleted) by the element content modification unit 106 or an element in which all of the element is discarded, the priority evaluation unit 104 The identification information indicating that a part has been deleted is added to the document, and the document file is output to the element storage unit 106. As the identification information, for example, ht of the document
Describe the "modified" attribute as ml element,
If the document file is a part of the document is deleted, (modi
fied = "true").

The priority instructing section 105 is mainly composed of the CPU 11 and the file system 13, and stores a reference priority determined based on the document display capability of each terminal device. Then, when the priority evaluation unit 104 processes each element of the document file, the priority instruction unit 105 outputs the stored reference priority to the priority evaluation unit 104.

The instruction output from the priority instruction unit 105 may be input by the user for each process, in addition to the case where the instruction is set in advance as described above. Further, it may be appropriately changed according to the storage capacity of the PC 10. That is, when the storable capacity of the PC 10 is low, the priority is set higher, the number of elements to be stored is reduced, and when the storable capacity is sufficient, the priority is set lower. It is possible to increase the number of elements to be stored.

The element content correcting section 106 is mainly composed of the CPU 11
And an element determined to be modified and saved from the priority evaluation unit 104 is input. Then, based on the input element priority and the tree structure of the document file, the element content correction unit 106 deletes a predetermined element as described later, and outputs the processing result to the priority evaluation unit 104.

The element storage unit 107 is mainly composed of the CPU 11 and the file system 13 and stores each element input from the priority evaluation unit 104. Each element stored in the element storage unit 107 is stored in the display device 1 shown in FIG.
9 is displayed. FIG. 7 is a block diagram illustrating a functional configuration of the small portable device 30. In FIG. 7, a small portable device 30 includes an inter-terminal communication unit 301 and a structure analysis unit 3.
02, a priority evaluation unit 304, and a priority instruction unit 305
, An element content correction unit 306, and an element storage unit 307. Note that the functional configuration of the small portable device 30 is the same as that of the corresponding portion of the PC 10 except for the network communication unit 103, and thus the description is omitted.

Next, the operation will be described. First, the operation of the entire document exchange system 1 will be described. In the document exchange system 1, any terminal device, for example, a PC
Ten users create a document, store the document (the original document A in FIG. 1) in the server 70, and transmit the document to another terminal device, for example, the small portable device 30.

Upon receiving a document file from another terminal device such as the PC 10, the small portable device 30 executes a document file receiving process, evaluates the priority of each element of the received document file, and then evaluates the evaluated priority. The predetermined content of the document file is displayed according to the degree. In addition, the small portable device 30 further transmits the document file (document a in FIG. 1) on which the document file receiving process has been performed to the projector 40. Then, the projector 40 appropriately accesses the server 70 based on the URL included in the received document file and downloads the original document file (the original document A in FIG. 1). Then, the projector 40 displays each element based on the priority in the document file.

Further, the projector 40 transmits to the smartphone 50 the document file (document file b in FIG. 1) which has been processed by the projector 40 itself. The smartphone displays the content of the received document file based on the priority of each element, and transmits the document file (document file c in FIG. 1) processed by the own device to the card-type information device 60.

The card-type information device 60 displays the contents of the received document file based on the priority of each element, and transmits the document file (document file d in FIG. 1) processed in its own device to the PC 20. Here, the card-type information device 60 is a device in which the processing capacity of the document file is extremely limited, such as the storage capacity is extremely limited, and stores the original document file among the elements included in the document file. Only the element with the highest priority, such as the URL of the server 70, is stored. And the card type information device 6
0 transmits the stored document file to the PC 20.

When the PC 20 receives a document file from the card-type information device 60, it executes a document file receiving process. Since the received document file contains only the element with the highest priority, the PC 20
The server 70 accesses the server 70 based on the URL included in the document file, downloads the original document file (the original document file A in FIG. 1), and displays the contents.

Next, the operation of each terminal device in the above-described operation will be described by taking the small portable device 30 as an example. The small portable device 30 executes a document file receiving process according to the functional configuration shown in FIG. When the small portable device 30 receives the document file by the terminal-to-terminal communication unit 301, the small portable device 30 starts the document file reception process. First, the structure analysis unit 302 sets the tree structure of the document file and the priority set for each element (FIG. 8). Analyze).

FIG. 8 is a diagram showing the tree structure of the original document file shown in FIG. 4 and the priorities set for each element. In FIG. 8, a priority (“priority” attribute) is set for some elements (text), and each element belongs to a hierarchy such as “head”, “body”, “div”, and the like. . In FIG. 8, "mandatory (required)", "high (high priority)",
“Middle (medium priority)” and “low (low priority)” are set.

At this time, for a branch or an element for which no priority is set, the priority set for the nearest higher-level branch is set. If the priority is not determined by such a method, , The priority is set to “mandatory (required)”. FIG. 9 is a diagram showing a case where priorities are set for the entire tree structure of FIG.

Next, the small portable device 30 is
The priority evaluation unit 304 evaluates the priority of each element based on the analysis result of No. 02 and the reference priority input from the priority instruction unit 305. That is, the priority evaluation unit 304
Compares each element in the document file with the reference priority, and if all the elements included in the branch of the tree structure are equal to or higher than the reference priority, determines that all the elements included in the branch are stored. Further, when some of the elements included in the branch have the reference priority or higher, the priority evaluation unit 304 saves only the elements with the reference priority or higher and deletes the other elements (correct the contents and save). If all the elements included in the branch are below the reference priority, it is determined that the entire branch is to be discarded.

Then, the priority evaluation unit 304 corrects the content of the branch determined to be corrected and stored by the element content correction unit 306, and stores each element (branch) to be stored in the element storage unit 307 as a document file. save. At this time, a part that is not a description of an element such as an xml declaration or a DOCTYPE declaration is stored in the element storage unit 307 as it is.

Here, the contents of the document file evaluated and stored based on the reference priority of the small portable device 30 will be described for each set reference priority. The reference priority set for the small portable device 30 is “mandatory (required)”
, Each branch shown in FIG.
The result evaluated by 4 is as shown in FIG. At this time, the contents of the document file stored in the element storage unit 307 are as shown in FIG.

When the reference priority set in the small portable device 30 is “high (high priority)”, each branch shown in FIG. 9 is evaluated by the priority evaluation unit 304 as shown in FIG. Become like At this time, the element storage unit 3
The contents of the document file stored in 07 are as shown in FIG. Further, when the reference priority set in the small portable device 30 is “middle (middle priority)”, the result of evaluating each branch shown in FIG. 9 by the priority evaluation unit 304 is as shown in FIG. . At this time, the element storage unit 3
The contents of the document file stored in 07 are as shown in FIG.

When the reference priority set in the small portable device 30 is “low (small priority)”, each branch shown in FIG. 9 is evaluated by the priority evaluation unit 304. Matches. At this time, the element storage unit 307
The contents of the document file stored in.
Here, in the case of a device that can communicate with the server 70 via the Internet 80, such as the PCs 10, 20 or the projector 40, as a result of analyzing the document file by the structure analysis unit 102, a portion deleted in the content of the received document file is obtained. At some point, that is, when the document includes identification information indicating that some or all of the elements (branches) have been deleted, the network communication unit 103 refers to the URL included in the document file and Access the server 70 and download the original document file. In this case, the downloaded document file is to be processed.

However, even in these terminal devices, it is possible to process a document file received without downloading original document data from the server 70 in accordance with a processing environment such as an instruction from a user or a connection status of the Internet 80. It is possible. Furthermore, in this case,
When the document file stored in the element storage unit 107 is browsed, the original document data can be browsed by downloading the original document file from the server 70 and executing the document file receiving process again. Become.

As described above, in the document exchange system 1 to which the present invention is applied, each terminal device selects only necessary elements from among the elements of the exchanged document file in accordance with the processing capability of its own device. And save. Therefore, the content of the document exchanged by the terminal-to-terminal communication does not need to be created in conformity with the terminal device having the largest restriction, so that the content of the exchanged document can be made more flexible.

In a terminal device that can access the server 70 via the Internet 80, even if a part of the document file received by the terminal-to-terminal communication is deleted, the original file stored in the server 70 is deleted. By downloading this document file, it is possible to obtain a complete document file, and it is possible to browse a document whose content matches the processing capability of its own device.

In the present embodiment, an example in which the priority is set for each element of the document file has been described. However, in addition to the priority, “contents” indicating the type of the content of each element of the document file "Type" may be set (see FIG. 16). That is, among a plurality of content types defined for each type of content of the element, a content type suitable for each element of the document file is set.
On the other hand, each terminal device may store a table for registering content types that can be processed by the own device, and determine the elements to be stored (displayed) in the own device with reference to the table.

In this case, each terminal device can store only the elements of the browsing (display) content suitable for its own device, and can efficiently and appropriately browse the contents of the document file. For example, the projector 40 saves and displays only elements related to the presentation sheet (elements indicating that the content type is the content of the presentation sheet) in the document file, and the small portable device 30 relates to the presentation sheet. Of the elements, it is possible to store only a high-priority element and display a presentation with simple contents.

Further, in the present embodiment, the UR of the server 70 storing the original document is stored in the document file.
L has been described as being transmitted.
The URL of the specific application executed above may be included. If the specific application has a function capable of acquiring statistical data such as the time and frequency of access from each terminal device, it is necessary to measure the promotion effect and advertisement effect by exchanging document files. Becomes possible.

When exchanging the document file, the terminal device may edit the document file using an application capable of editing the contents of the document file. In this case, each user who exchanges a document file can add a comment to the document file and transmit it to another terminal device. Therefore, by obtaining these document files by the server 70, it becomes possible to perform a questionnaire, a vote of a fixed content, or a collection of atypical comments. The time at which the server 70 acquires the document file may be the time at which the terminal device accesses the original document file of the server 70, or the like.

When performing terminal-to-terminal communication, information on the processing capability of the terminal is transmitted from the terminal on the receiving side to the terminal on the transmitting side in advance. The transmission data size or the like may be further notified, and the receiving terminal device may approve the notification, and the transmitting terminal device may transmit only the approved elements. At this time, as an example of data indicating information on the processing capability of the terminal device on the receiving side, a priority allowable on the receiving side,
Relevant content types are possible.

Further, when document files are exchanged, transmission data may be encrypted or encoded into a binary code. At this time, if the receiving terminal device is configured to be capable of decoding in units of each element, the decoding process can be performed quickly. Also, if the document file is linked to other files (such as image data or video data files or style sheets)
It is also possible to encode linked files as a single file.

[0063]

According to the present invention, each terminal device can select and use only necessary elements among the elements of the document data to be exchanged in accordance with the processing capability of its own device. Therefore, the content of the exchanged document is not restricted by the capability of each terminal device, and the content of the exchanged document can be made more flexible. For this reason, it is possible to prevent a situation in which the efficiency in document exchange is reduced, and it is possible to appropriately utilize the processing capacity of each terminal device.

Further, claim 2, claim 9, and claim 1
According to the invention described in Item 3, since the server stores the original document data, each terminal device can access the server completely even when a part of the received document data is deleted. It is possible to acquire document data having a proper content, and to use a document having a content suitable for the processing capability of its own device.

[Brief description of the drawings]

FIG. 1 is a network configuration diagram of a document exchange system 1.

FIG. 2 is a block diagram illustrating a hardware configuration of the PC 10.

FIG. 3 is a block diagram showing a hardware configuration of the small portable device 30.

FIG. 4 is a diagram showing an example of the content of a document exchanged in the document exchange system 1.

FIG. 5: “priority” attribute and “alternat”
It is a figure which shows the value described of the value of an "e" attribute.

FIG. 6 is a block diagram showing a functional configuration of the PC 10.

FIG. 7 is a block diagram showing a functional configuration of the small portable device 30.

8 is a diagram showing a tree structure of the original document file shown in FIG. 4 and a priority set for each element.

FIG. 9 is a diagram showing a case where priorities are set for the entire tree structure of FIG. 8;

FIG. 10 is a diagram showing a result of evaluating each branch shown in FIG. 9 by a priority evaluation unit 304 when a reference priority is “mandatory (essential)”;

11 is a diagram showing the contents of a document file stored in an element storage unit 307 in the case of FIG.

12 is a diagram illustrating a result of evaluating each branch illustrated in FIG. 9 by the priority evaluation unit 304 when the reference priority is “high (high priority)”;

FIG. 13 is a diagram showing contents of a document file stored in an element storage unit 307 in the case of FIG.

14 is a diagram illustrating a result of evaluating each branch illustrated in FIG. 9 by the priority evaluation unit 304 when the reference priority is “middle (middle priority)”.

FIG. 15 is a diagram showing the contents of a document file stored in an element storage unit 307 in the case of FIG.

FIG. 16 is a diagram illustrating an example of a document including various content types.

[Explanation of symbols]

 1 Document Exchange System 10, 20 PC 30 Small Portable Device 11, 31 CPU 12, 32 Memory 13, 33 File System 14, 34 Terminal Communication Interface 15 Network Interface 16, 36 I / O Controller 17, 37 I / O Device 18 , 38 Display controller 19, 39 Display device 40 Projector 50 Smartphone 60 Card type information device 70 Server 80 Internet 101, 301 Terminal communication unit 102, 302 Structure analysis unit 103 Network communication unit 104, 304 Priority evaluation unit 105, 305 Priority Degree indication unit 106, 306 Element content modification unit 107, 307 Element storage unit

Claims (14)

[Claims] 1. A data exchange method for exchanging document data between a plurality of terminal devices, wherein a predetermined attribute is set for each element of the exchanged document data, and the attribute is set between the terminal devices. When exchanging document data, a data exchange method, wherein, based on the predetermined attribute, an element suitable for the terminal device on the receiving side among the elements included in the document data can be used. 2. The method according to claim 1, wherein the original data of the document data is stored in a predetermined server, and the exchanged document data includes an address of the original data.
2. The data exchange method according to claim 1, wherein the original data can be obtained by accessing the address included in the document file received by the communication between the terminals. 3. When performing the terminal-to-terminal communication, a terminal device on the receiving side of the document data transmits information on the processing capability of the own device to the terminal device on the transmitting side of the document data. The data exchange method according to claim 1 or 2, wherein the terminal device transmits a predetermined element in the document data to the terminal device on the receiving side based on the information on the processing capability. 4. The data exchange method according to claim 1, wherein the predetermined attribute is information indicating a priority of each element included in the document data. 5. The data exchange method according to claim 1, wherein the predetermined attribute is information indicating a type of content of each element included in the document data. 6. A data exchange system capable of exchanging document data between a plurality of terminal devices, wherein a predetermined attribute is set for each element of the exchanged document data, and a terminal on the receiving side of the document data is provided. When exchanging the document data between the terminal devices, the device can use, among the elements included in the document data, an element suitable for the device, based on the predetermined attribute. And a data exchange system. 7. The terminal device on the receiving side, comprising: an inter-terminal communication unit for receiving the document data from another terminal device; a data content analysis unit for analyzing the content of the document data; Based on the analysis result, a priority determination unit that determines an element that matches the own device, and based on a determination result of the priority determination unit, an element content correction unit that can correct the content of a predetermined element. 7. The data exchange system according to claim 6, wherein: an element suitable for each terminal device among the elements included in the document data is made available. 8. The receiving-side terminal device transmits information relating to the processing capability of its own document data to the transmitting-side terminal device, and the transmitting-side terminal device transmits a document based on the information relating to the processing capability. 8. The data exchange system according to claim 6, wherein a predetermined element in the data is transmitted to a terminal device on the receiving side. 9. The server according to claim 1, further comprising: a server for storing the original data of the document data, wherein the exchanged document data includes an address of the original data, and wherein the terminal device receives the document received by the terminal-to-terminal communication means. A server access unit capable of accessing the server by referring to the address included in a file, wherein the terminal device can acquire original data of the document data as needed. 7
Or the data exchange system according to 8. 10. The data exchange system according to claim 6, wherein the predetermined attribute is information indicating a priority of each element included in the document data. 11. The data exchange system according to claim 6, wherein the predetermined attribute is information indicating a type of contents of each element included in the document data. 12. A data exchange processing program for a terminal device in a data exchange system capable of exchanging document data between a plurality of terminal devices, the terminal communication function for receiving the document data from another terminal device. A data content analysis function for analyzing the content of the document data; a priority determination function for determining an element suitable for the own device based on an analysis result of the data content analysis means; and a determination for the priority determination means. Based on the result, an element content correction function capable of correcting the content of a predetermined element is realized by a computer, and among the elements included in the document data, an element suitable for the device is made available. A data exchange processing program characterized in that: 13. A terminal device for a data exchange system according to claim 6. 14. A server for the data exchange system according to claim 9.