PATENT ABSTRACT
Terminal devices and a method of transferring sets of transmission document information in a network system between terminal devices such as portable devices which can be grouped together into a plurality of different groups is provided. A terminal device can store capability information relative to a specific type of data that can be received and outputted. The terminal device can receive an inquiry from another terminal device as to the capability information and can transmit the capability information when appropriate to the inquiring terminal device. Various types of capability information can be stored, depending upon the particular capabilities of the terminal device such as picture data, audio data and character data to enable the terminal device to be an e-mail terminal.

PATENT DESCRIPTION
CROSS-REFERENCE TO RELATED APPLICATIONS 
   This is a continuation application of U.S. Ser. No. 09/236,777, filed on Jan. 22, 1999, and now abandoned, which was a divisional application of U.S. Ser. No. 08/736,955, filed on Oct. 25, 1996, now U.S. Pat. No. 5,864,673. 

   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to terminal devices, such as e-mail terminals and portable information terminals, connected via a network in a document information communication system. 
   2. Description of the Related Art 
   In recent years, there has been a rapid increase in the use of a variety of communication devices such as telephones, facsimiles, digital mobile telephones, PHS (personal handy phone system), portable communication terminals, pagers capable of receiving a message and workstations connected to LAN (Local Area Network) and WAN (Wide Area Network). This situation provides users with many opportunities to handle different types of communication terminal devices. 
   Therefore, there is increasing demand for improved capability of transmitting and receiving a multimedia document which includes data of different media attributes, such as audio data, character data, still image data, motion picture data and hand-written data. However, such communication terminal devices are not readily available to users due to their high cost and bulky size. 
   A protocol called MIME (Multipurpose Internet Mail Extension) has been established for transmitting such multimedia document in data communication. According to MIME, a plurality of document elements constitute a document, each having a single media attribute and meaning. Each document element has data showing its media attribute and display method. 
   MIME is described in detail in “Network Working Group Request for Comments 1341”. 
   Generally, a communication terminal device for transmitting a document including different media attributes has a document described in MIME and transmits it to a receiver terminal device. The receiver terminal device decodes the document elements included in the document based on their media attribute data. When the document includes data of a media attribute which cannot be decoded and displayed (outputted), this data is ignored by the receiver terminal device. 
     FIG. 1  shows the construction of the terminal device in the conventional document information communication system. Transmitter terminal device  11  and receiver terminal device  12  are connected via network  13 . Transmitter terminal device  11  comprises document information storage unit  14  and transmission unit  15 . Receiver terminal device  12  comprises reception unit  16  and document output unit  17 . 
   Document  20  in  FIG. 2  is transmitted from terminal device  11  to terminal device  12  as follows. Document  20  comprises document elements  21 ,  22 ,  23 ,  24  and  25  having “character” as their media attributes and document element  26  having “monochrome still picture” as its media attribute. 
   Document information storage unit  14  stores document  20  in the form of document information control table  30  shown in  FIG. 3 . Document information control table  30  comprises element data  31 , element data size  32  and media attribute  33 . For example, in the case of document element  21  “Notice of a Meeting”, its media attribute is “character” and data size is “19”. In the case of document element  26 , its media attribute is “monochrome still picture” and data size is “1000”. 
   Transmission unit  15  receives a user &#39;s indication of a transmission destination terminal (which can be any of the terminals) and document information, reads document information control table  30  stored in document information storage unit  14  and transmits it to reception unit  16  of terminal device  12  via network  13 . 
   Reception unit  16  of terminal device  12  receives document information control table  30  transmitted from terminal device  11 . Document output unit  17  decodes information control table  30  and outputs it to the display screen. If terminal device  12  has the same function (output capability) as terminal device  11 , document output unit  17  outputs the same document as document  20  shown in  FIG. 2  to the display screen. However, if terminal device  12  is a character e-mail terminal which is capable of decoding only element data having “character” as its media attribute, the terminal device outputs only element data of document elements  21 ,  22 , . . . ,  25  to the display screen, as is shown in  FIG. 4 . 
   As the character e-mail terminal is not capable of decoding and displaying (outputting) the element data of document element  26 , the reception of this document  26  is futile. 
   As mentioned above, it was often likely that such futile communication is often performed by the conventional document information communication system, as transmitter terminal device  11  transmits all of the information in document information control table  30  stored in document information storage unit  14  regardless of the output capability of receiver terminal device  12 . 
   In addition to this problem, it has also not been possible to transmit all of document  20  to receiver terminal device  12 . 
   It can be the case that the intended receiver of the data is in possession of another communication device, aside from receiver terminal  12 , which is capable of outputting a different part of the document data. However, in this case, it is still impossible to avoid the futile transmission of data which cannot be outputted to both devices. 
   Receiver terminal device  12  is indicated by the user in transmission terminal device  11 . If the user of receiver terminal device  12  possesses another terminal device, it may be more convenient to transmit the element data to that terminal device. 
   SUMMARY OF THE INVENTION 
   In view of the stated problems, it is a primary object of the present invention to provide a terminal device for use in a document information communication system where documents can be transmitted between terminal devices without futile communication. 
   A second object of the present invention is to provide a terminal device which can communicate document information in accordance with a operational state of a user&#39;s terminal device. 
   A third object of the present invention is to provide a relay device which can prevent the occurrence of futile communication and which enables the construction of each terminal to be simplified. 
   The aforementioned primary object can be achieved by a terminal device to be used in a system where sets of transmission document information are transferred via a network between terminal devices which are grouped together in a plurality of different groups, the terminal device comprising: a document information storage unit for storing document information which is made up of a plurality of document elements which are to be transmitted; a terminal device arrangement information storage unit for storing terminal device arrangement information made up of each group name, a type of each terminal device provided at each group and an address of each terminal device; a terminal device capability information control unit for controlling terminal device capability information which shows what kinds of document information can be outputted by each type of terminal device; a transmission document information creation unit for selecting terminal devices based on the group name of a group to be transmitted to and the terminal device arrangement information and for creating sets of the transmission document information from the document information to be transmitted in accordance with the terminal device capability information; and a transmission unit for transmitting the created sets of transmission document information to the selected terminal devices. 
   By means of the stated construction, since each set of transmission document information transmitted by the transmission unit is created by the transmission document information creation unit in accordance with the type of transmission destination terminal device, which is to say the transmission document information creation unit only creates outputable sets of transmission document information, the transmission destination terminal device is able to output all of the received information with no futile reception of non-outputable data. 
   Here, the transmission document information creation unit may include a transmission destination terminal device selection unit for selecting a terminal device whose group name in the terminal device arrangement information coincides with the group name to be transmitted to as a transmission destination terminal device, wherein the transmission destination group name may be included in the document information as a transmission address. 
   Here, the document information storage unit may include a media attribute storage unit for storing, for each document element, a media attribute of a set of element data which is a content of a document element, the terminal device capability information control unit may include an outputable media attribute storage unit for storing each media attribute which can be outputted by each type of terminal device, and the transmission document information creation unit may further include an element data write unit for writing element data which has a media attribute which matches an outputable media attribute for the transmission destination terminal device selected by the transmission destination terminal device selection unit into the present set of transmission document information. 
   Here, the transmission document information creation unit may create a set of transmission document information for each transmission destination terminal device. 
   By means of the stated construction, even when document information which is made up of a plurality of document elements is expressed using different media elements, the transmission document creation unit creates each set of transmission document information from only the document information which is expressed using a media attribute which can be outputted by a terminal in question, so that the destination terminal device will definitely be able to output the entire set of transmission document information. 
   Here, the document information storage unit may include a media attribute storage unit for storing, for each document element, a media attribute of a set of element data which is a content of a document element, the terminal device capability information control unit may include an outputable media attribute obtaining unit for obtaining an outputable media attribute for a transmission destination terminal device selected by the transmission destination terminal device selection unit from the transmission destination terminal device, and the transmission document information creation unit may further include an element data write unit for writing element data which has a media attribute which matches an outputable media attribute for a terminal device which is obtained from the outputable media attribute storage unit into the present set of transmission document information. 
   Here, the outputable media attribute obtaining unit includes: a media attribute inquiry unit for sending an inquiry to the transmission destination terminal device asking for an outputable media attribute; a media attribute reception unit for receiving a response containing a media attribute from the transmission destination terminal device; an own media attribute storage unit for storing a media attribute of element data which is outputable for a present terminal device; and a media attribute response unit for transmitting, on receiving an inquiry for an outputable media attribute from a terminal device, the media attribute stored by the own media attribute storage unit to the terminal device which sent the inquiry. 
   By means of the stated construction, even if the transmission source terminal device is unaware of what media attributes of document information can be outputted by a transmission destination terminal device, it can still obtain such media attributes by making an inquiry to the transmission destination terminal device, so that in the same way as above, the destination terminal device will definitely be able to output the entire set of transmission document information. 
   Here, the terminal device may further comprise a media attribute conversion information storage unit for storing media attribute conversion information which shows how element data is convertible between different media attributes, the transmission document information creation unit may further include a conversion determination unit for determining whether there is any element data which cannot be written into a present set of transmission document information by the element data write unit and a conversion indication unit for indicating, when the conversion determination unit has determined that element data which cannot be written is present, a conversion of a media attribute of the unwritable element data to a media attribute which matches the media attribute of the selected transmission destination terminal device, in accordance with the media attribute conversion information, and the terminal device may further comprise a media attribute conversion unit for converting element data of a media attribute into element data of another media attribute in accordance with an indication received from the conversion indication unit, wherein the element data write unit may write the converted element data into the present set of transmission document information. 
   By means of the stated construction, if document elements which are expressed by a media attribute which cannot be outputted by the transmission destination terminal device are included in a set of document information, the media attribute of these document elements can be converted to a media attribute which can be outputted by the transmission destination terminal device. 
   Here, the document information storage unit may include an element data size storage unit for storing a size of each set of element data in each document element, the terminal device capability information control unit may include a terminal device receivable amount storage unit for storing an amount of element data which can be received by each type of terminal device, and the transmission document information creation unit may include an element data write unit for writing element data which is within the amount of element data which can be received by the transmission destination terminal device selected by the transmission destination terminal device selection unit into the transmission document information. 
   By means of the stated construction, only an amount of element data which is within the receivable amount of data for the transmission destination terminal device is written into each set of transmission document information so that futile communication is not performed. 
   Here, the document information storage unit may include an element data size storage unit for storing a size of each set of element data in each document element, the terminal device capability information control unit may include a terminal device receivable amount obtaining unit for obtaining a receivable amount of element data for a transmission destination terminal device selected by the transmission destination terminal device selection unit from the corresponding transmission destination terminal device, and the transmission document information creation unit may further include an element data write unit for writing an amount of element data which is within the receivable amount of the transmission destination terminal device which is received from the terminal device receivable amount obtaining unit into the present set of transmission document information. 
   Here, the terminal device receivable amount obtaining unit may include: an amount inquiry unit for sending an inquiry to the transmission destination terminal device asking for an receivable amount of element data; a reception amount reception unit for receiving a response containing the reception amount from the transmission destination terminal device; an own capacity storage unit for storing a receivable capacity of element data for a present terminal device; and a reception amount response unit for transmitting, on receiving an inquiry for a receivable amount from a terminal device, the receivable amount which is calculated by subtracting a reception amount of currently in use from the receivable capacity stored by the own capacity storage unit to the terminal device which sent the inquiry. 
   By means of the stated construction, the transmitter terminal device can inquire as to the receivable data amount of the transmission destination terminal device and so learn of the receivable data amount which dynamically corresponds to the state of the transmission destination terminal device. Accordingly, futile communication can be avoided. 
   Here, the document information storage unit may include: a media attribute storage unit for storing, for each document element, a media attribute of a set of element data which is a content of a document element; and an element data size storage unit for storing, for each document element, a size of the set of element data which is the content of the document element, the terminal device capability information control unit may include an outputable media attribute storage unit for storing each media attribute which can be outputted by each type of terminal device; and a terminal device capacity storage unit for storing a receivable capacity of element data for each type of terminal device, and the transmission document information creation unit may further include an element data determination unit for determining, if element data of a media attribute which corresponds to a media attribute which is outputable for the transmission destination terminal device determined by the transmission destination terminal device selection unit were written in a present set of transmission document information, whether a size of a present set of transmission document information would be within the receivable capacity of the corresponding terminal device; and an element data write unit for writing, when the element data determination unit has determined that the size is within the receivable capacity, the set of element data into the present set of transmission document information. 
   By means of the stated construction, the transmission document information creation unit creates transmission document information in accordance with the media attributes which are outputable for the transmission destination terminal device and the receivable data amount for the transmission destination terminal device. 
   Here, the transmission document information creation unit may further include: an element data size calculation unit for calculating a writable amount of element data when the element data determination unit has determined that the size of the transmission document information is not within the receivable capacity, wherein the writable amount of element data is calculated as the receivable capacity of the corresponding terminal device which is written in the terminal device capacity storage unit minus a total amount of element data which has already been written in the set of transmission document information, and each terminal device may further comprise: a compression information storage unit for storing compression information which is made up of a compression method for element data and a compression rate for compressing the element data; a compression possible determination unit for determining whether element data which has been compressed in accordance with the compression rate in the compression information would be within the writable amount calculated by the element data size calculation unit; an element data compression unit for compressing, when the compression possible determination unit has determined that the element data would be within the rewritable amount, the element data to a size equal to the writable amount calculated by the element data size calculation unit using the compression method in the compression information; and a compressed element data write unit for writing the element data compressed by the element data compression unit into the present set of transmission document information. 
   By means of the stated construction, the transmission document information can be compressed when its size exceeds the receivable amount of the transmission destination terminal device. 
   Here, the compression information storage unit may include a media attribute-classified compression information storage unit for storing a compression method and a compression rate for each media attribute in element data, and the element data compression unit may include a media attribute compression unit for compressing element data in accordance with the compression method stored in the media attribute-classified compression information storage unit which corresponds to the media attribute. 
   By means of the stated construction, compression is performed in accordance with the media attribute of element data. 
   Here, the document information storage unit may further include an element data content storage unit for storing a title for each document element which expresses a content of a corresponding document element, wherein the compression information storage unit may include a content-classified compression information storage unit for storing compression information made up of a compression method and a compression rate for each title in element data, and the element data compression unit may include a content compression unit for compressing element data using a compression method which corresponds to a title of the element data stored in the content-classified compression information storage unit. 
   By means of the stated construction, compression is performed in accordance with the content element data. 
   Here, the terminal device may further comprise: a first document information reception unit for receiving, when a second set of transmission document information is transmitted to another transmission terminal at a same group as a present transmission destination terminal device, a first set of transmission document information which is appended with an address of the other terminal device; a first document information storage unit for storing the first set of transmission document information received by the first document information reception unit; a transmission request unit for sending a request to a transmission terminal whose address is appended to the first set of transmission document information asking for transmission of the received second set of transmission document information; a second transmission document information reception unit for receiving the second set of transmission document information which is sent from the other terminal device in accordance with the request from the transmission request unit; and a document information unification unit for unifying the first set of transmission document information and the second set of transmission document information into one set of transmission document information. 
   Here, the terminal device may further comprise: a request reception unit for receiving the request for the transmission of the second set of transmission document information from the transmission request unit; and a second transmission document information transmission unit for transmitting the received second set of transmission document information in accordance with the received request to the terminal device which issued the request. 
   By means of the stated construction, the sets of transmission document information are combined within a same group to give the original document, so that the user can receive the document information in its entirety. 
   Here, the document information storage unit may include: an element data size storage unit for storing a size of each set of element data in each document element; and a document element priority level storage unit for storing a priority level for each document element showing a transmission priority of each document element, the terminal device capability information control unit may include a terminal device capacity storage unit for storing a receivable capacity of element data which can be received by each type of terminal device, and the transmission document information creation unit may include: an element data determination unit for determining, if element data of a high priority document element were written in a present set of transmission document information, whether a data amount of the present set of transmission document information would be within the receivable capacity of element data for the transmission destination terminal device; and an element data write unit for writing the element data into the transmission document information when the element data determination unit has determined that the data amount is within the receivable capacity of element data. 
   By means of the stated construction, when a proposed set of transmission document element data would exceed the reception capacity of the transmission destination terminal device, element data with a high priority level is given priority when deciding the element data to be included in the set of transmission document information. 
   The second object of the present invention can be achieved by a, 
   The document information storage unit may include a media attribute storage unit for storing, for each document element, a media attribute of a set of element data which is a content of a document element, wherein the terminal device arrangement information storage unit may include a terminal device priority level storage unit for storing a priority level for each terminal device which shows a priority level with which each terminal device receives document elements, wherein the terminal device capability information control unit includes an outputable media attribute storage unit for storing each media attribute which can be outputted by each type of terminal device, wherein the transmission document information transmission unit includes: a prioritized terminal device specifying unit for specifying a terminal device with a high priority level out of the terminal devices selected by the transmission destination terminal device selection unit; a first element data write unit for writing element data which has a media attribute which matches a media attribute which is outputable for the terminal device selected by the prioritized terminal device specifying unit into a present set transmission document information; a prioritized terminal device respecifying unit for specifying a terminal device with a lower priority level than the terminal device specified by the prioritized terminal device specifying unit when the first element data write unit has been unable to write all of the element data into the present set of transmission document information; and a second element data write unit for writing element data with a media attribute which matches a media attribute which is outputable for the terminal device specified by the prioritized terminal device respecifying unit into a different set of transmission document information. 
   By means of the stated construction, transmission document information is sent transmitted with priority being given to a terminal device with high priority out of the prospective transmission destination terminal devices. 
   Here, the terminal device of claim  2  may further comprise: a communication state obtaining unit for obtaining a communication state of the terminal device selected by the transmission destination terminal device selection unit, wherein the document information storage unit includes a media attribute storage unit for storing, for each document element, a media attribute of a set of element data which is a content of a document element, wherein the terminal device capability information control unit includes outputable media attribute storage unit for storing each media attribute which can be outputted by each type of terminal device, and wherein the transmission document information creation unit further includes an element data write unit for writing element data which has a media attribute which matches an outputable media attribute for a terminal device whose communication state obtained by the communication state obtaining unit is that communication is possible. 
   Here, the communication state obtaining unit may include: an communication state inquiry unit for sending an inquiry to the terminal device selected by the transmission destination terminal device selection unit asking whether communication is possible; a communication state inquiry reception unit for receiving a response from another terminal device sent in accordance with the inquiry from the communication state inquiry unit; a communication state inquiry response unit for sending a response showing that communication is possible after receiving an inquiry about communication state from another terminal device; a communication state determination unit for determining that a communication state of a terminal device is that communication is possible after the communication state inquiry reception unit has receiving a response from the terminal device and for determining that a communication state of a terminal device is that communication is not possible when there has been no response to the inquiry sent by communication state inquiry unit within a predetermined period. 
   By means of the stated construction, another terminal device can be transmitted to when a presently-selected transmission destination terminal device is unable to perform communication. 
   Here, the terminal device may further comprise: a document element transmission address information storage unit for storing document element transmission address information made up of each document element in sets of transmission document information created by the transmission document information creation unit and a list of addresses of terminal devices which are transmission addresses for each document element; and a transmission destination terminal device address extraction unit for extracting an address of a terminal device which is a transmission address of a document element which is included in document element transmission address information but not included in a present set of transmission document information, wherein the transmission document information creation unit may include an appending unit for appending the present set of transmission document information with the address extracted by the transmission destination terminal device address extraction unit. 
   Here, the appending unit may convert the extracted address to a same media attribute as written in the present set of transmission document information by the element data write unit before appending. 
   By means of the stated construction, when the document information is divided and transmitted to a plurality of terminal devices, the locations of the other transmission document terminal devices are clearly stated, so that the user can receive all of the sets of transmission document information without losing track of any. 
   Here, the terminal device of claim  1 , further comprising group state inquiry address information storage unit for storing an address of one terminal device in each group which receives an inquiry about whether to transmit a set of transmission document information to any prioritized terminal device provided in a group, wherein the transmission document information creation unit further includes a group state inquiry unit for sending an inquiry to a terminal device having an address which is in a group name to be transmitted to and which is stored by the group state inquiry address information storage unit, wherein the group name is included in document information as a transmission address, wherein the terminal device further comprises first group state inquiry reception unit for receiving a group state from a terminal device to which an inquiry was sent, in reply to the inquiry from the group state inquiry unit, wherein the terminal device arrangement information storage unit includes a group state corresponding priority level storage unit for storing a priority level of each terminal device in accordance with a group state, wherein the document information storage unit includes a media attribute storage unit for storing, for each document element, a media attribute of a set of element data which is a content of a document element, wherein the terminal device capability information control unit may include an outputable media attribute storage unit for storing each media attribute which can be outputted by each type of terminal device, and the transmission document information creation unit may further include an element data write unit for writing element data which has a media attribute which matches a media attribute for a terminal device whose priority level is high in accordance with the group state received by the first group state inquiry reception unit into the present set of transmission document information. 
   Here, the terminal device specified by the address stored by the group state inquiry address information storage unit may further comprise: a second group state inquiry reception unit for receiving an inquiry about group state from another terminal device; and a group state inquiry response unit for sending a response to the other terminal device about a group state set in accordance with the inquiry received by the group state inquiry response unit. 
   By means of the stated construction, sets of transmission document information which specify a transmission destination terminal device in accordance with priority levels which correspond to the group state are transmitted, so that these can correspond to the operational state of a user&#39;s terminal devices. 
   The third object of the present invention can be achieved by a relaying device provided in a system where sets of transmission document information are transferred via a network between terminal devices provided in a plurality of different groups, the relaying device comprising: a reception unit for receiving a transmission of document information made up of a plurality of document elements from any of the terminal devices, wherein the document information includes a group name as a transmission address; a document information storage unit for storing document information which is received by the reception unit; a terminal device arrangement information storage unit for storing terminal information arrangement information made up of each group name, a type of each terminal device provided at each group and an address of each terminal device; a terminal device capability information control unit for controlling terminal device capability information which shows what kinds of document information can be outputted by each type of terminal device; a transmission document information creation unit for selecting terminal devices provided in a group whose group name in the terminal device arrangement information matches the group name in the document information as transmission destination terminal devices and for creating sets of the transmission document information from document information to be transmitted in accordance with the terminal device capability information; and a transmission unit for transmitting the created sets of transmission document information to the selected terminal devices. 
   By means of the stated construction, the construction of each terminal device can be simplified. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     These and other objects, advantages and features of the invention will become apparent from the following description taken in conjunction with the accompanying drawings which illustrate a specific embodiment of the invention. In the drawings: 
       FIG. 1  shows the construction of terminal devices in a conventional document information communication system; 
       FIG. 2  shows an example of a document to be transmitted by a conventional terminal device; 
       FIG. 3  shows the document data for the document shown in  FIG. 2  which is stored in the document information storage unit of the conventional transmitter terminal device; 
       FIG. 4  shows the document outputted by a conventional receiver terminal device; 
       FIG. 5  shows the construction of the terminal device in a document information communication information system to which the first embodiment of the present invention relates; 
       FIG. 6  shows an example of a document sent by a transmitter terminal device; 
       FIG. 7  shows an example of a document information control table for the document shown in  FIG. 7 ; 
       FIG. 8  shows the terminal device arrangement information stored in the terminal device arrangement information storage unit of the terminal device; 
       FIG. 9  shows the outputable media attribute information stored in the outputable media attribute information storage unit of the terminal device; 
       FIG. 10  shows a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 11  also shows a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 12  shows the document which is display outputted by the terminal device which received the element data in the transmission document control table shown in  FIG. 10 ; 
       FIG. 13  shows the document which is display outputted the terminal device which received the element data in the transmission document control table shown in  FIG. 11 ; 
       FIG. 14  is a flowchart showing the operation of the first embodiment; 
       FIG. 15  shows the construction of the terminal device in a document information communication information system to which the second embodiment of the present invention relates; 
       FIG. 16  shows the construction of the terminal device in a document information communication information system to which the third embodiment of the present invention relates; 
       FIG. 17  shows the document information control table stored by the document information storage unit of the terminal device; 
       FIG. 18  shows the terminal device arrangement information stored in the terminal device arrangement information storage unit of the terminal device; 
       FIG. 19  shows a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 20  shows the media attribute conversion information stored in media attribute conversion information storage unit; 
       FIG. 21  shows the transmission document control table stored by the transmission document information temporary storage unit; 
       FIG. 22  is a flowchart showing the operation of the third embodiment; 
       FIG. 23  shows the construction of the terminal device in a document information communication information system to which the fourth embodiment of the present invention relates; 
       FIG. 24  shows the terminal device arrangement information stored by the terminal device arrangement information storage unit of the terminal device; 
       FIG. 25  shows the receivable capacity information stored in the receivable capacity information storage unit of the terminal device; 
       FIG. 26  shows a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 27  also shows a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 28  is a flowchart showing the operation of the fourth embodiment; 
       FIG. 29  shows the construction of the terminal device in a document information communication information system to which the fifth embodiment of the present invention relates; 
       FIG. 30  shows the construction of the terminal device in a document information communication information system to which the sixth embodiment of the present invention relates; 
       FIG. 31  shows the terminal device arrangement information stored by the terminal device arrangement information storage unit of the terminal device; 
       FIG. 32  shows the terminal device capability information stored by the terminal device capability information of the terminal device; 
       FIG. 33  shows the media attribute group compression information stored by the media attribute group compression information storage unit of the terminal device; 
       FIG. 34  shows a transmission document control table stored by the transmission document temporary storage unit of the terminal device; 
       FIG. 35  shows a transmission document control table stored by the transmission document temporary storage unit of the terminal device; 
       FIG. 36  is a flowchart showing the operation of the sixth embodiment; 
       FIG. 37  shows the construction of the terminal device in a document information communication information system to which the seventh embodiment of the present invention relates; 
       FIG. 38  shows a transmission document control table stored by the document information storage unit of the terminal device; 
       FIG. 39  shows the element content group compression information stored by the element content group compression information storage unit of the terminal device; 
       FIG. 40  shows an example of the proper noun dictionary stored by the element content group compression information storage unit of the terminal device; 
       FIG. 41  shows a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 42  also shows a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 43  shows the construction of the terminal device in a document information communication information system to which the eighth embodiment of the present invention relates; 
       FIG. 44  shows a transmission document control table stored by the document information storage unit of the terminal device; 
       FIG. 45  shows the terminal device arrangement information stored by the terminal device arrangement information storage unit of the terminal device; 
       FIG. 46  shows the terminal device capability information stored by the terminal device capability information of the terminal device; 
       FIG. 47  shows a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 48  is a flowchart showing the operation of the eighth embodiment; 
       FIG. 49  shows the construction of the terminal device in a document information communication information system to which the ninth embodiment of the present invention relates; 
       FIG. 50  shows the terminal device arrangement information stored by the terminal device arrangement information storage unit of the terminal device; 
       FIG. 51  is a flowchart showing the operation of the ninth embodiment; 
       FIG. 52  shows the construction of the terminal device in a document information communication information system to which the tenth embodiment of the present invention relates; 
       FIG. 53  shows the terminal device arrangement information stored by the terminal device arrangement information storage unit of the terminal device; 
       FIG. 54  shows the outputable media attribute information stored by the outputable media attribute information storage unit of the terminal device; 
       FIG. 55  is a flowchart showing the operation of the tenth embodiment; 
       FIG. 56  shows the construction of the terminal device in a document information communication information system to which the eleventh embodiment of the present invention relates; 
       FIG. 57  shows the terminal device arrangement information stored by the terminal device arrangement information storage unit of the terminal device; 
       FIG. 58  shows the group state inquiry address information stored by the group state inquiry address information storage unit of the terminal device; 
       FIG. 59  shows the construction of the terminal device in a document information communication information system to which the twelfth embodiment of the present invention relates; 
       FIG. 60  shows the document element transmission destination information stored in the document element transmission destination information of the terminal device; 
       FIG. 61  is a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 62  is a transmission document control table stored by the transmission document information temporary storage unit of the terminal device; 
       FIG. 63  is a flowchart showing the operation of the twelfth embodiment; 
       FIG. 64  shows the construction of the terminal device in a document information communication information system to which the thirteenth embodiment of the present invention relates; 
       FIG. 65  is a figure showing the document information stored by the first document information storage unit of the terminal device; 
       FIG. 66  is a figure showing the document information stored by the second document information storage unit of the terminal device; 
       FIG. 67  shows the document information unified by the document information unification unit of the terminal device; 
       FIG. 68  is a flowchart showing the operation of the twelfth embodiment; and 
       FIG. 69  is a figure showing the document information stored by the first document information storage unit of the terminal device. 
   

   DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIG. 5  shows the construction of the terminal device in the document information communication system of the first embodiment of the present invention. 
   The document information communication system comprises a plurality of terminal devices  501 ,  502 ,  503  . . .  510  and network  511  which connects each of the terminal devices. 
   Each terminal device comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  515 , outputable media attribute information storage unit  516 , transmission document information creation unit  517 , transmission document information temporary storage unit  518  and transmission unit  519 . 
   Terminal devices  501  and  502  belong to group  520 . Terminal device  503  belongs to group  521 . Terminal devices  504 ,  505  and  506  belong to group  522 . Terminals devices  507  and  508  belong to group  523 . Terminal devices  509  and  510  belong to group  524 . 
   Each group is made up of terminal devices which are used by a same user. 
   Input operation unit  512  consists of a keyboard, a mouse, a scanner and the like. Input unit  512  receives input of document  601  to be transmitted as shown in  FIG. 6 . Document  601  comprises document elements  602 ,  603 ,  604 ,  605  and  606  which have “characters” as their media attributes and document element  607  which has “monochrome still picture” as its media attribute. Input operation unit  512  receives input of document  601  and transfers the content of document  601  to input control unit  513 . Input operation unit  512  receives the user&#39;s indication of a name of a group including a transmission destination terminal and transfers the group name to input control unit  513 . 
   On receiving the content of document  601  from input operation unit  512 , input control unit  513  stores document  601  in document information storage unit  514  as document information control table  701  in  FIG. 7 . Document information control table  701  comprises a list of element data  702  showing the content of the document elements, element data size  703  and media attribute  704 . 
   Here, input control unit  513  decides the media attributes as follows. As examples, when the user&#39;s input operations in input operation unit  512  are keyboard operations, the media attribute is “character”; when they are scanner operations, the media attribute is “monochrome still picture”, when they are hand-writing operations using a tablet, the media attribute is “ink”. Input operation unit  513  calculates the capacity of the element data to obtain element data size when the user designates one document element by pressing Enter. 
   Input control unit  513  receives the name of the transmission destination group, writes it in group name column  705  in document information control table  701  and activates transmission document information creation unit  517 . 
   Document information storage unit  514  consists of erasable memory and stores document information control table  701  in  FIG. 7 . When document information control table  701  is stored by input control unit  513 , no flags are set in flag column  706  beside element data  702 . Flags are set when transmission document data is created from each element data  702  by transmission document information creation unit  517 . 
   For example, “A” is written in group name column  705  in document information control table  701 , “A” being the group name indicated by the user in input operation unit  512 . In the first row  707 , element data “Notice of a Meeting”, an element data size “19” and a media attribute “character” of document element  602  of document  601  are stored. 
   Terminal device arrangement information storage unit  515  consists of erasable memory and stores terminal device arrangement information  801  in  FIG. 8  beforehand. 
   Terminal device arrangement information  801  comprises group name column  802 , address column  803  of the terminal device belonging to the group in group name column  802 , type column  804  showing the type of the terminal device and flag column  805 . Flags are set in flag column  805  by transmission document information creation unit  517  which will be explained later. 
   In  FIG. 8 , group  524  in  FIG. 5  is shown as “A”. The address of terminal device  509  is “A@.abc.def.jp” and it is a “character e-mail terminal”. The address of terminal device  510  is “06-123-4567” and it is “FAX”. 
   The content of terminal device arrangement information  801  can be updated when one or more of the terminal devices in the document information communication system changes. 
   Outputable media attribute information storage unit  516  has stored outputable media attribute information  901  in  FIG. 9  beforehand as terminal device capability information. Outputable media attribute information  901  comprises type column  902  showing the type of the terminal device and media attribute column  903  showing the media attribute to be outputted by the terminal device. 
   Outputable media attribute information  901  in  FIG. 9  shows that when the terminal device is a facsimile, element data having “monochrome still picture” as its media attribute can be outputted; when it is a telephone, element data having “audio” as its media attribute can be outputted; and when it is a character e-mail terminal, element data having “character data” as its media attribute can be outputted. 
   Transmission document information creation unit  517  is activated by input control unit  513  and does the following: reads the group name stored in group name column  705  in document information control table  701  stored in document information storage unit  514 ; finds the same group name in group name column  802  in terminal arrangement information  801  stored in terminal arrangement information storage unit  515 ; reads the type of a terminal device and its address; sets a flag for the terminal device in flag column  805 ; creates a transmission document control table having that terminal device as transmission destination terminal device in transmission document information temporary storage unit  518 , as shown in  FIGS. 10 and 11 ; and writes the type of the terminal device and its address in transmission destination terminal column  1002  in transmission document control table  1001 . For example, in the case of document information control table  701  in  FIG. 7 , “A” is the group name of the transmission destination group, so that “character e-mail” of the terminal device belonging to “A” in terminal device arrangement information  801  and its address “A@abc.def.jp” are written in transmission destination terminal column  1002 . 
   Next, transmission document information creation unit  517  reads the outputable media attribute of the type of the transmission destination terminal device of outputable media attribute information  901  stored in outputable media attribute information storage unit  516  and writes it in media attribute column  1003  in transmission document control table  1001 . In the above example, the media attribute is “character”. Transmission document information creation unit  517  reads the element data and size of the media attribute of “character” in document information control table  701  stored in document information storage unit  514 , writes them in element data column  1004  and element data size column  1005  in transmission document control table  1001  for each document element and sets a flag for each of them in flag column  706 . When there is no element data which corresponds to the media attribute in document information control table  701 , document information creation unit  517  completes the creation of transmission document control table  1001 . 
   Next, document information creation unit  517  reads the type and address of the terminal device which has not been flagged in flag column  805 , the terminal device corresponding to the name of the transmission destination group in terminal device arrangement information  801  in terminal device arrangement information storage unit  515 , and creates a new transmission document control table as shown in  FIG. 11 . Terminal device arrangement information storage unit  515  sets a flag in flag column  805  for the terminal device and creates transmission document control table  1101 . In this transmission document control unit  1101 , the type of the transmission destination terminal device is “FAX” and its outputable media attribute is “monochrome still picture”. They correspond to the media attribute of the element data  708  on the sixth row in document information control table  701 . Therefore, transmission document information creation unit  517  writes the element data and its size in element data column  1102  and size column  1103  in transmission document control table  1101 . In transmission destination terminal column  1104 , “FAX” and “06-123-4567” are stored. 
   Transmission document information creation unit  517  checks whether each entry of the flag column of the element data in document information control table  701  is flagged. If so, this means that there are some remaining element data to be transmitted. Therefore, transmission document information creation unit  517  searches for a transmission destination terminal device which is not flagged in terminal device arrangement information  801 . When flags are set for all of the available types of terminal device or for all of the element data in document information control table  701 , transmission document information creation unit  517  activates transmission unit  519  as the creation of the transmission document has already been completed. 
   Transmission document information temporary storage unit  518  consists of a buffer and is made to store transmission document control tables  1001  and  1101  in  FIGS. 10 and 11 , respectively, by transmission document information creation unit  517 . 
   Transmission destination terminal device columns  1102  and  1104  in transmission document control tables  1001  and  1101 , respectively, store the type of the transmission destination terminal device and its address. The element data to be transmitted has media attribute which can be outputted by the designated terminal device. 
   On being activated by transmission document information creation unit  517 , transmission unit  519  reads the transmission document control table stored in transmission document information temporary storage unit  518  for each transmission destination terminal device and transmits the element data to the transmission destination terminal. 
   For example, according to transmission document control table  1001  shown in  FIG. 10 , transmission unit  519  transmits the element data having “character” as its media attribute stored in element data column  1004  in transmission document control table  1001  to terminal device  509  which is a character e-mail terminal in group  524  having the group name “A”. After that, transmission unit  519  transmits the element data having “monochrome still picture” as its media attribute stored in element data column  1102  in  FIG. 11  to terminal device  510  which is “FAX” in group  524  via network  511 . 
   Here, if the transmission destination terminal device is registered in the transmission document control table, no transmission will occur if element data is not present in the table. 
   A reception unit (not illustrated) of terminal device  509  receives element data transmitted from terminal device  501  of group  502  and its output unit (not illustrated) decodes all the element data received by the reception unit as shown in  FIG. 12  and outputs it for display. Likewise, an output unit (not illustrated) of terminal device  510  outputs all the element data received by its reception unit (not illustrated) for display. 
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 14 . 
   The user inputs a document into input operation unit  512  and indicates the transmission destination terminal (Step  1402 ). 
   Transmission document information creation unit  517  finds the same group as the transmission destination group in document information control table  701  from terminal device arrangement information  801  and determines if all terminal devices in the group are flagged (Step  1404 ). If so, transmission document information creation unit  517  advances to Step  1414 . If not, transmission document information creation unit  517  reads one terminal device which is not flagged and sets its flag (Step  1406 ). According to the type of the terminal device, transmission document information creation unit  517  obtains the media attribute which can be outputted by the terminal device, referring to outputable media attribute information  901  (Step  1408 ). 
   Transmission document information creation unit  517  creates transmission document control table  1001  having the terminal as the transmission destination terminal, writes all element data of the document element having the media attribute which can be outputted by the terminal device from document element in document information control table  701  and sets flags for the transcribed element data in flag column  706  in document information control table  701  (Step  1410 ). Transmission document information creation unit  517  determines if all element data is flagged in document information control table  701  (Step  1412 ), returning to Step  1404  if this is the case, or otherwise instructing transmission unit  519  to transmit the element data (Step  1414 ). 
   Transmission unit  519  receives the instruction of transmission, successively reads transmission document control tables  1001  and  1101  stored in transmission document information temporary storage unit  518 , and transmits the element data to each transmission destination terminal device (Step  1416 ). 
   When each terminal device receives transmission of the element data, they decode all the element data, output them for display and completes the processing. 
   Second Embodiment 
     FIG. 15  shows the construction of the terminal device in the document information communication system of the second embodiment of the present invention. 
   Terminal device  1501  comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  515 , media attribute information storage unit  1502 , inquiry reception unit  1503 , inquiry response unit  1504 , transmission unit  1505 , transmission document information creation unit  1506  and transmission document information temporary storage unit  518 . Terminal device  1501  differs from terminal device  501  of the first embodiment in that it comprises media attribute information storage unit  1502 , inquiry reception unit  1502  and inquiry response unit  1504  instead of outputable media attribute information storage unit  516 . Therefore, the functions of the transmission unit  1505  and transmission document information creation unit  1506  are a little different. The other elements are the same and have been given the same reference numbers. Accordingly, the following explanation will focus on only the differences with the first embodiment. 
   Media attribute information storage unit  1502  stores media attributes which can be decoded and outputted when terminal device  1501  receives the element data. For example, media attribute information storage unit  1502  stores that “character” and “monochrome still picture” can be outputted at the same time. 
   Inquiry reception unit  1503  receives an inquiry from one of the other terminal devices, the inquiry asking what element data can be outputted by terminal device  1501  via network  511 , and transfers the address of that terminal device to response unit  1504 . 
   Inquiry reception unit  1503  receives the address and media attribute of the terminal device and transfers them to transmission document creation unit  1506 . 
   On receiving the address and media attribute of the terminal device from the inquiry reception unit  1503 , inquiry response unit  1504  reads “character” and “monochrome still picture” stored in media attribute information storage unit  1502 , and transfers them to transmission unit  1505 . 
   Transmission unit  1505  transmits its own address and media attribute to the terminal device via network  511 , the terminal device having the address transferred from inquiry response unit  1504 . 
   On receiving a notification from transmission document information creation unit  1506  that it wants to acquire the address and media attribute, transmission unit  1505  transmits its own address in response, and also transmits an inquiry asking for the outputable media attribute of the appropriate terminal device. 
   In creating the transmission document control table in transmission document information temporary storage unit  518 , transmission document information creation unit  1506  first writes the type of terminal device and its address in the transmission destination terminal device column, and then, in order to know element data of what media attribute can be outputted from the terminal device of that address, informs the transmit unit  1505  of the address and media attribute it wishes to know, unlike in the first embodiment where the outputable media attribute information was read. In the present embodiment, transmission document information creation unit  1506  transfers its desired address and media attribute to transmission unit  1505 . Transmission document information creation unit  1506  receives address and media attribute of one of the other terminal devices and writes them in media attribute column in the transmission document control table. Other functions are the same as transmission document information creation unit  517  of the first embodiment. 
   The operations of the present embodiment are almost the same as the first embodiment. The following explanation will focus on only the different points. 
   Instead of Step  1408  in  FIG. 14 , transmission document information creation unit  1506  notifies transmission unit  1505  that it wants to acquire the address and outputable media attribute of the appropriate terminal device. Terminal unit  1505  transmits that notification to the terminal device via network  511 . The inquiry reception unit of the terminal device receives that notification and transmits it to the inquiry response unit. The inquiry response unit reads the media attribute from the media attribute information storage unit of the terminal device and its transmission unit transmits the media attribute to inquiry reception unit  1503  of terminal device  1501 . Transmission document information creation unit  1506  obtains the outputable media attribute of the transmitter terminal device received by inquiry reception unit  1503 . 
   As mentioned above, each terminal device of the present embodiment transmits the media attribute of the element data which it can output in response to an inquiry from one of the other terminal devices. Therefore, it is not necessary for each terminal device to store the outputable media attribute of other terminal devices (outputable media attribute information) in the document information communication system. This is to say, if one or more of the terminal devices and its outputable media attribute are changed in each group, it is not necessary to change the outputable media attribute information in all terminal devices in the document information communication system. 
   According to the first and the second embodiments, it is possible to device a document consisting of a variety of media attributes and transmit them to terminal devices which are capable of outputting each media attribute. Therefore, futile communication and wasteful use of memory do not occur. As mentioned above, even though one receiver terminal device is not capable of outputting all the media attributes included in the document, it is possible to divide and transmit the document to a plurality of terminal devices which belong to the same group. Therefore, all contents of the document can be transmitted to the user. 
   In the above embodiment, an example where the document was divided into two and transmitted to two terminal devices in a receiver group was given. The number of the receiver terminal devices can be only one, or it can be three or more. In the above embodiment, the media attribute was only “character” and “monochrome still picture”. But other media attributes, such as “audio”, “color still picture”, “motion picture”, “ink” and “script” can also be included. In the present embodiment, transmission document information creation unit  517  instructs transmission unit  519  to transmit the content of transmission document control table  1001  after creating a plurality of transmission document control tables  1001 . However, transmission document information creation unit  517  may instruct transmission unit  519  to transmit it every time it creates one transmission document control table  1001 . In the above embodiment, all the media attributes of the document elements of the document can be outputted by any of the terminal devices belonging to the same group. It may be possible that media attributes which cannot be outputted by any of the transmission destination terminal devices are included. In such a case, transmission of the futile element data does not occur. 
   Third Embodiment 
     FIG. 16  shows construction of the third embodiment of each terminal device in the document information communication system of the present invention. Terminal device  1601  comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  515 , outputable media attribute information storage unit  516 , media attribute conversion information storage unit  1602 , transmission document information creation unit  1603 , media attribute conversion unit  1604 , transmission document information temporary storage unit  518  and transmission unit  519 . 
   Terminal device  1601  differs from terminal device  501  of the first embodiment in that it comprises media attribute conversion information storage unit  1602  and media attribute conversion unit  1604 . The other elements have been given the same reference numbers and the following explanation will focus on only the differences. 
     FIG. 17  shows document information control table  1701  stored in document information storage unit  514 . The difference with the first embodiment is document information control table  701  and “C” in group name column  705 . Group “C” can, for example, be group  523  having terminal device  507  and  508 . According to “C”  1802  in terminal device arrangement information  1801  in  FIG. 18 , terminal device  507  is “telephone” whose address is “03-9876-5432” and terminal device  508  is “FAX” whose address is “03-9876-5678”. Outputable media attribute information  901  shows that terminal  507  has “audio” as its outputable media attribute and terminal device  508  has “monochrome still picture” as its outputable media attribute. By the same processing as the first embodiment, transmission document control table  1901  in  FIG. 19  is created. 
   Media attribute conversion information storage unit  1602  has stored media attribute conversion information  2001  as shown in  FIG. 20  beforehand. Media attribute conversion information  2001  shows relations between outputable media attributes. For example, it shows that media attribute “character” stored in media attribute column  2002  can be converted to “audio” or “monochrome still picture” stored in convertible media attribute column  2003  without changing the content of the element data in element data column  702  in document information control table  1701 . At the same time, media attribute conversion information  2001  shows that “audio” can be converted to “character”. 
   Transmission document information creation unit  1603  comprises the following functions in addition to transmission document information creation unit  517  of the first embodiment. 
   When flags are not set for all of the document elements in document information control table  1701  and all transmission destination terminal devices are flagged in terminal device arrangement information  1801 , in other words, when some of the element data in document information control table  1701  have not been transcribed into the transmission document control table, transmission document information creation unit  1603  resets all the flags in flag column  805  in terminal device arrangement information  1801 , reads one terminal device belonging to the transmission destination group in terminal device arrangement information  801 , and sets its flag in flag column  805 . Transmission document information creation unit  1603  refers to outputable media attribute information  901  and obtains the outputable media attribute. 
   In document information control table  1701  shown in  FIG. 17 , element data  1702 – 1706  having “character” as their media attribute are not flagged. The outputable media attribute of terminal  507  in transmission destination group  523  “C” is “audio”. It is possible to convert element data having “character” as its attribute to element data having “audio” as its media attribute, which is shown by media attribute conversion information  2001 . Transmission document information creation unit  1603  successively reads out element data  1702  “Notice of a Meeting” to element data  1706  “Please make sure to come.” and instructs media attribute conversion unit  1604  to convert the media attribute from “character” to “audio”. 
   Document information control table  1701  receives the indication of the converted element data from media attribute conversion unit  1604 , sets flags in flag column  706  in document information control table  1701  stored in document information storage unit  514 , transcribes the transferred element data, its media attribute and the transmission document control table  2101  in transmission document information temporary storage unit  518 , as shown in  FIG. 21 . 
   Media attribute conversion unit  1604  receives the media attribute and element data which should be converted from transmission document information creation unit  1603 , converts the element data to the transferred media attribute and transfers the converted element data to transmission document creation unit  1603 . 
   Media attribute conversion unit  1604  stores an algorithm and the like for converting “character” to “audio”. Such algorithms are well-known. Converting the media attribute from “character” to “audio” is mentioned in “Bit” (Kyoritsu Shuppan, pages 11–20, March Issue, 1995). On the other hand, “character” to “monochrome still picture” is carried out by creating bit map data by developing fonts corresponding to character codes. Converting “audio” to “character” is disclosed in “Nikkei Byte” (Nikkei BP Co. pages 212–219, June Issue, 1992). 
   Transmission document information temporary storage unit  518  temporarily stores table  2101  whose transmission destination terminal device, terminal device  507  (“telephone”), has had its media attribute converted along with transmission document control table  1901  having terminal device  508  as transmission destination terminal device. 
   As element data  2102  to  2106  in transmission document control table  2101  have “audio” as their media attributes, their data sizes are different from those in document information control table  1701 . 
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 22 . No explanation of Steps  2202  to  2212  is given here because the operations are the same as Steps  1402  to  1412  of the first embodiment. The following explanation will only focus on the differences. 
   If flags are set for all receiver terminal devices in Step  2204 , transmission document information creation unit  1603  resets the flags in flag column  805  in terminal device arrangement information  1801  (Step  2214 ), determines if flags are set for all receiver terminal devices (Step  2216 ), advances to Step  2230  when this is the case. If not, it reads one terminal device which is not flagged and sets its flag (Step  2218 ), refers to the outputable media attribute information for the type of the terminal device, and obtains the media attribute of that terminal device (Step  2220 ). 
   By referring to media attribute conversion information  2001 , transmission test information creation unit  1603  finds element data which has not been flagged in document information control table  1701  and which can be converted to the media attribute obtained in Step  2220 , instructs media attribute conversion unit  1604  to convert the media attribute of the element data, and transfers the converted element data to transmission document information creation unit  1603  (Step  2224 ). 
   Transmission document information creation unit  1603  transcribes the transferred element data in the transmission document control table and sets a flag in the document information control table for the corresponding element data (Step  2226 ), determines whether flags are set for all element data (Step  2228 ), advancing to Step  2230  and instructing transmission unit  518  to transmit the element data (Step  2230 ) when this is the case, or otherwise returning to Step  2216 . 
   Transmission unit  518  transmits the element data to the terminal device having the address in transmission document information control tables  1901  and  2101  stored in transmission document information temporary storage unit  518  (Step  2232 ). 
   According to the present embodiment, if the document to be transmitted includes elements having media attributes which cannot be outputted by any of the receiver terminal devices, the document elements may be converted to document elements having media attributes which can be outputted by one of the terminal devices. In this way, the entire document can be transmitted. 
   According to the present embodiment, the outputable media attribute storage unit has stored the outputable media attribute of each type of terminal device beforehand. However, the outputable media attribute storage unit may ask a transmission destination terminal device for its outputable media attribute, as disclosed in the second embodiment. Also, in the present embodiment, the case where the media attribute of “character” was converted to “audio” was explained, although other conversions are possible. 
   Fourth Embodiment 
     FIG. 23  shows the construction of the terminal device in the document information communication system of the fourth embodiment of the present invention. 
   Terminal device comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  515 , receivable capacity information storage unit  2303 , transmission document information creation unit  2303 , transmission document information temporary storage unit  518  and transmission unit  519 . Terminal device  2301  is the same as terminal device  520  of the first embodiment except that terminal device  2301  comprises receivable capacity information storage unit  2302  instead of outputable media attribute information storage unit  516 . Therefore, the functions of transmission document information creation unit  2303  are a little different from transmission document information creation unit  517  of the first embodiment. The following explanation will focus on only the differences. 
   In the case of transmitting document  601  in  FIG. 6  to group  524  having group name “A”, document information storage unit  514  stores the document information control table  701  in  FIG. 7 . 
   Terminal device arrangement information storage unit  515  stores terminal device arrangement information  2401  in  FIG. 24 . “Graphic portable terminal” whose address is “06-123-4567” and “graphic e-mail terminal” whose address is “A@abc.def.jp” belong to “A” group. 
   Receivable capacity information storage unit  2303  consists of memory and has stored receivable capacity information beforehand. Receivable capacity information  2501  includes the capacity (size) of receivable element data for each type of terminal device. For example, the graphic portable terminal can receive element data size up to “100”. When it exceeds “100”, the graphic portable terminal cannot output all of the element data it received. In other words, “100” shows memory capacity of the reception unit (not illustrated) of the terminal device. The graphic e-mail terminal can receive data size up to “5000”. 
   On being activated by input control unit  513 , transmission document information creation unit  2303  reads the group name stored in group name column  705  in document information control table  701  stored in document information unit  514 , finds the same group name in group name column  2404  in terminal arrangement information  2401  stored in terminal arrangement information storage unit  515 , reads the type and address of one terminal device belonging to the group, sets its flag in flag column  2403 , creates the transmission document control table having that terminal device as the transmission destination terminal device in transmission document information temporary storage unit  518 , as shown in  FIGS. 26 and 27 , and writes the type and address of the terminal device in transmission destination terminal device column  2602 . For example, in the case of document information control table  701  in  FIG. 7 , as the transmission destination group name is “A”, transmission document information creation unit  517  writes “graphic portable terminal” and its address “06-123-4567” in transmission destination terminal device column  2602 . 
   Next, transmission document information creation unit  517  reads the capacity (size) of the receivable element data of each transmission destination terminal device in receivable capacity information  2501  stored in receivable capacity information storage unit  2303  and sets the capacity (size) as C 0 . In the above example, the data size of the graphic portable terminal is “100”. Transmission document information creation unit  517  reads the media attribute, element data and size of the document element which is not flagged in document information control table  701  stored in document information storage unit  514  and determines if total of their sizes and the size of the element data already written in transmission document control table  2601  is equal to or below C 0 . 
   If this is the case, transmission document information creation unit  517  writes them in media attribute column  2603 , size column  2604  and element data column  2605 , respectively, in transmission document control table  2601 , sets its flag in flag column  706 . When the total of the size of the element data which is not flagged in document information control table  701  and size of the element data which is already written in transmission document control table  2601  is equal to or below C 0 , this processing is repeated. When there is not any element data which is not flagged or the value exceeds C 0 , creation of transmission document control table  2601  is completed. Specifically, when the size of the element data of the fifth row in document information control table  701  is added, the value exceeds C 0 . 
   When the value exceeds C 0 , the transmission document information creation unit  517  reads the type and address of the terminal device which is not flagged in flag column  805 , the terminal device corresponding to the name of the transmission destination group in terminal device arrangement information  2401  in terminal device arrangement information storage unit  515 . The transmission document information creation unit  517  creates a new transmission document control table as shown in  FIG. 27 . At this time, transmission document information creation unit  517  sets a flag in flag column  805  for the terminal device. In this way, transmission document control table  2701  is created. In transmission destination terminal device column  2702  in transmission document control table  2701 , “graphic e-mail terminal” and “A@abc.def.jp” are written. Transmission document information creation unit  517  reads size C 0  of the “graphic e-mail terminal” in receivable capacity information  2501  stored in receivable capacity information storage unit  2303 . The element data is not written in transmission document control table  2701 . Therefore, the size is “0”. As the element data size “100” of the fifth row in document information control table  701  is equal to or below size C 0 , transmission document information creation unit  517  writes this element data in transmission document control table  2701  and sets its flag in flag column  705  in document information control table  701 . When the element data size “1000” of the sixth row in document information control table  701  is added, the value becomes “1100”. As it is equal to or below “5000” of size C 0 , transmission document information creation unit  517  sets a flag in flag column  705  for this terminal device. In this way, transmission document control table  2701  is created. 
   Transmission document information creation unit  517  checks if flags are set for all of the element data in document information control table  701 . If this is not the case, there are some remaining element data to be transmitted. Therefore, transmission document information creation unit  517  searches for the transmission destination terminal devices which are not flagged. When flags are set for all of the element data in document information control table  701 , creation of the transmission document control table is completed. Accordingly, transmission document information creation unit  517  activates transmission unit  519 . 
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 28 . As Steps  2802 – 2806  and Steps  2816 – 2820  are the same as Steps  1402 – 1406  and  1412 – 1416  of the first embodiment, explanation is not given here. The following explanation will focus on only the differences. 
   Transmission document information creation unit  2303  reads C 0  of the receivable element data of the terminal device of Step  2806  in receivable capacity information  2501  (Step  2808 ) and reads one document element which has not been flagged from document information control unit  701  stored in document information storage unit  514  (Step  2810 ). Transmission document information creation unit  2303  determines if the total of the size of the element data and size of the element data already written in the transmission document control table is equal to or below C 0  (Step  2812 ). If this is the case, transmission document information creation unit  2303  writes the element data, sets its flag (Step  2814 ) and returns to Step  2810 . If this is not the case, transmission document information creation unit  2303  advances to Step  2816 . 
   As mentioned above, the present embodiment makes to possible to divide the transmission document which includes a plurality of media attributes into some documents, each having the size that can be received by the receiver terminal devices in the transmission destination group. Therefore, if one receiver terminal device cannot receive the original document due to the lack of its memory capacity, the document may be transmitted to another terminal devices. Eventually, the entire document can be received by the user. 
   Fifth Embodiment 
     FIG. 29  shows the construction of the terminal device in the document information communication system of the fifth embodiment of the present invention. Terminal device  2901  comprises receivable capacity information storage unit  2902  which stores capacity for receiving its own element data instead of receivable capacity information storage unit  2303  of terminal device  2301  of the fourth embodiment, inquiry reception unit  1503 , inquiry response unit  1504 , transmission unit  1505  and transmission document information creation unit  2903 . Transmission unit  1505  and transmission document information creation unit  2903  are subject to inquiry reception unit  1503  and inquiry response unit  1504 . Inquiry reception unit  1503 , inquiry response unit  1504  and transmission unit  1505  are the same as the second embodiment. Other construction elements are the same as the first or the fourth embodiment. The following explanation will focus on only the differences. 
   Receivable capacity information storage unit  2902  has already stored the capacity (size) of the element data transmitted from another terminal device, that is to say, memory capacity for storing data it received. 
   Inquiry response unit  1504  reads the receivable capacity stored in receivable capacity information storage unit  2902  when inquiry reception unit  1503  receives an inquiry for the receivable capacity of terminal device  2301  from another terminal, sets C 0  by subtracting the currently-used memory capacity from the entire receivable capacity and instructs transmission unit  1505  to respond to the terminal device which made the inquiry. Transmission unit  1505  transmits the receivable capacity information to the terminal device via network  511 . 
   Transmission document information creation unit  2901  instructs transmission unit  1505  to ask the receivable capacity information of the transmission destination terminal device by transferring its address when the creation of the transmission document control table is started by designating the transmission destination terminal device in the terminal device arrangement information stored in terminal device arrangement information storage unit  515 . 
   Transmission document information creation unit  2901  receives the receivable capacity information on one of the transmission destination terminal devices from inquiry reception unit  1503  and determines whether the total of the size of the element data in the document information control table stored in document information storage unit  514  and size of the element data already written in the transmission document control table is equal to or below the transferred receivable capacity information (C 0 ). If this is the case, transmission document information creation unit  2901  writes the element data in the transmission document control table. If that is not the case, transmission document information creation unit  2901  reads a new transmission destination terminal device in the terminal arrangement information and creates a new transmission document control table. 
   The operations of the present embodiment are almost the same as the fourth embodiment except for Step  2808 , where size C 0  is obtained for receivable element data based on the inquiry to the transmission destination terminal device. 
   As mentioned above, the present embodiment makes it possible to transmit the document by dividing it into small sizes which can be received by each receiver terminal device based on the inquiry of the size of receivable element data of each receiver terminal device in one transmission destination group. It is also possible to dynamically change the transmission size depending on the conditions of the transmission destination group. In other words, it is possible to change the size if the receivable capacity changes due to the change of the amount of data stored in the terminal device. This flexibility cannot be obtained if the receivable capacity of all the terminal devices are stored beforehand. 
   Sixth Embodiment 
     FIG. 30  shows the construction of terminal device  3001  in the document information communication system of the sixth embodiment of the present embodiment. Terminal device  3001  comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  515 , terminal device capability information storage unit  3002 , media attribute-classified compression information storage unit  3003 , transmission document information creation unit  3004 , element data compression unit  3005 , transmission document information temporary storage unit  518  and transmission unit  519 . The same construction elements as the first embodiment have been given the same reference numbers. The following explanation will focus on only the differences. 
   Input operation unit  512  receives the user&#39;s input of document  601  in  FIG. 6 . Document information storage unit  514  is made to stored document information control table  701  in  FIG. 7  by input control unit  513 . 
   Terminal device arrangement information storage unit  515  has stored terminal device arrangement information  3101  in  FIG. 31  beforehand. According to terminal device arrangement information  3101 , group “A” comprises “character portable terminal” whose address is “06-123-4567” and “FAX” whose address is “06-987-6543”. 
   Terminal device capacity information storage unit  3002  has stored terminal device capacity information  3201  in  FIG. 32  beforehand. Terminal device capacity information  3201  includes terminal device type column  3202 , media attribute column  3203  which shows outputable media attribute of the type of the terminal device, and capacity (size) column  3204  which shows size of the outputable element data of the type of the terminal device. According to terminal device capacity information storage unit  3002 , the “character portable terminal” can receive element data of media attribute “character” up to size “60”. 
   Media attribute-classified compression information storage unit  3003  has stored media attribute-classified compression information  3301  in  FIG. 33  beforehand. Media attribute-classified compression information  3301  comprises media attribute column  3302  of the element data, compression rate column  3303  for the element data of that media attribute and compression algorithm column  3304 . According to media attribute-classified compression information  3301 , when the media attribute of the element data is “character”, commas and spaces are deleted first, and characters in a message is discarded one by one from the end, realizing a desired compression rate. When the media attribute of the element data is “monochrome still picture”, the compression rate can be set at 0.1 at most by a well-known picture compression method (“Picture Information Compression” by Hiroshi Harashima. Oumsha. 1991, “International Digital Facsimile Coding Standards Proc IEEE” Vol. 68, No. 7, page 854–867, R. Hunter, A. H. Robinson 1980). When the media attribute of the element data is “audio”, the compression rage can be set at 0.3 at most by a well-known audio compression method (“International Standard of Multimedia Coding” by Hiroshi Yasuda. Maruzen. 1991, “High Efficiency Coding of Acoustic Signals”). 
   On being activated by input control unit  513 , transmission document information creation unit  3004  reads the group name stored in group name column  705  in document information control table  701  stored in document information storage unit  514 , finds the same group name in group name column  3102  in terminal arrangement information  3101  stored in terminal arrangement information storage unit  515 , reads the type and address of one terminal device belonging to that group, sets its flag in flag column  3101 , creates the transmission document control table having that terminal device as transmission destination terminal device—examples are shown in  FIGS. 34 and 35 . Transmission document information creation unit  3004  writes the type and address of the terminal device in transmission destination terminal device column  3402  in transmission document control table  3401 . In the case of document information control table  701  in  FIG. 7 , as the transmission destination group is “A”, transmission document information creation unit  3004  writes “character portable terminal” and its address “06-123-4567” in transmission destination terminal device column  3402 . 
   Next, transmission document information creation unit  3004  reads the size of the outputable media attribute of the type of the transmission destination terminal device and the receivable element data in terminal device capacity information  3202  stored in terminal device capacity information storage unit  3002 . In the above example, the media attribute is “character” and the size is “60”. Transmission document information creation unit reads one of the element data and size of the media attribute “character” of the document elements which are not flagged in document information control table  701  stored in document information storage unit  514 . 
   Next, transmission document information creation unit  3004  determines whether the total of the above size and the size of the element data written in transmission document control table  3401  is equal to or below the size of the receivable element data read in terminal device capacity information  3201 . If this is the case, transmission document information creation unit  3004  writes the media attribute in media attribute column  3403 , the size in size column  3404  and the element data in element data column  3405 , arrangement flag in flag column  706  for this document element in document information control table  701 . If this is not the case, transmission document information creation unit  3004  refers to compression rate column  3303 , compression rate column  3303  being in media attribute-classified compression information  3301  stored in media attribute-classified compression information storage unit  3003 , and obtains the compressible size of the element data. 
   For example, when the media attribute is “character”, as the compression rate can be set freely, the compressible size is “1”, which is the minimum size. If the media attribute is “monochrome still picture” and element data size is “1000”, the compressible size is “100”. 
   If the compressible size is equal to or below the value obtained by subtracting the total of the size of the element data already written in transmission document control table  3401  from size of the receivable element data, transmission document information creation unit  3004  transfers the media attribute to element data compression unit  3005 , compresses the size of the element data to the size which is equal to the subtracted value. 
   When the compressible size exceeds the value mentioned above, the element data cannot be compressed. Therefore, it is impossible to transmit the element data to the transmission destination terminal device. 
   When the creation of one transmission document control table  3401  is completed, transmission document information creation unit  3004  reads the type and address of the terminal device which is not flagged in flag column  3103 , the terminal device corresponding to the name of the transmission destination group in terminal device arrangement information  3101  in terminal device arrangement information storage unit  515 , and creates new transmission document control table  3501  shown in  FIG. 35 . At this time, transmission document information creation unit  3004  sets a flag in flag column  3103  for the terminal device. In this way, transmission document control table  3501  is created. 
   Transmission document information creation unit  3004  receives the compressed element data from element data compression unit  3005 , writes the media attribute in media attribute column  3403 , the size in size column  3404  and element data in element data column  3405  in transmission document control table  3401  and sets a flag in flag column  706  for that element data in document information control table  701 . 
   Transmission document information creation unit  3004  determines whether all flags are set in flag column in document information control table  701 . If that is not the case, it means there are still element data to be transmitted. Therefore transmission document information creation unit  3004  searches for the transmission destination terminal device which is not flagged. If flags are set for all of the available types of terminal device or for all of the element data in document information control table  701 , creation of the transmission document control table is completed. Therefore, transmission document information creation unit  3004  activates transmission unit  519 . 
   Element data compression unit  3005  receives media attribute of the element data, compressed size and the element data from transmission document information creation unit  3004 , compresses the element data according to compression algorithm column  3304  in media attribute-classified compression information  3301  stored in media attribute-classified compression information storage unit  3003 , and transfers the compressed element data to transmission document information creation unit  3004 . 
   In the case of the fourth row of document information control table  701  in  FIG. 7 , the element data size already written in transmission document control table  3401  is “19+16+14”=“49”. If size “25” of element data “Place:             Building           Room” is added, “49” changes to “74”, exceeding “60” which is the receivable element data size of the “character portable terminal”. Therefore, by compressing the element data size to “11”, the element data can be transmitted.
   On receiving size “11” and the element data from transmission document information creation unit  3004 , element data compression unit  3005  reads the compression algorithm of media attribute “character” in media attribute-classified compression information  3301 , deletes spaces of the element data, discards letters in the message one by one from the end, and compresses the element data into “Place:             Bui”.
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 36 . Explanation for Steps  3602 – 3606  is not given here as these steps are the same as Steps  1402 – 1406  of the first embodiment. 
   In Step  3608 , transmission document information creation unit  3004  refers to terminal device capability information  3201  and obtains the outputable media attribute of the terminal device in Step  3606  and its receivable element data size. Transmission document information creation unit  3004  reads one element data which corresponds to the outputable media attribute of the terminal device of the element data which is not flagged in flag column  706  in document information control table  701  (Step  3610 ). Transmission document information creation unit  3004  determines if the total of the above size of that element data and size of the element data already written in the transmission document control table is equal to or below the size of the receivable element data in Step  3608  (Step  3612 ). If this is the case, transmission document information creation unit  3004  writes the element data, its media attribute and size in the transmission document control table and sets a flag in document information control table (Step  3614 ) and returns to Step  3610 . If this is not the case, transmission document information creation unit  3004  refers to media attribute-classified compression information  3301  and calculates the compressible size of the element data (Step  3616 ). Transmission document information creation unit  3004  determines if the calculated size is equal to or below the value obtained by subtracting the size of the element data written in the transmission document control table from the size of the entire receivable element data in Step  3608  (Step  3618 ), returning to Step  3622  if this is the case, or otherwise transferring the value, the element data and its media attribute obtained in Step  3618  to element data compression unit  3005  (Step  3619 ). 
   Element data compression unit  3005  reads the compression algorithm of the media attribute transferred by transmission information creation unit  3004  in media attribute-classified compression information  3301 , compresses the element data into the transferred size and transfers the compressed element data size to transmission document information creation unit  3004  (Step  3620 ). 
   Transmission document information creation unit  3004  carries out such processing as writing the transferred element data in the transmission document control table (Step  3614 ). 
   According to the compression algorithm of the present embodiment, commas and spaces are deleted first, and characters in a message are discarded one by one from the end. It is also possible to just discard the characters in a message one by one from the last. 
   As mentioned above, according to the present invention, if there are some element data having size which cannot be received by the receiver terminal device, it is possible to transmit the element data by compressing it according to its media attribute. 
   Seventh Embodiment 
     FIG. 37  shows the construction of the terminal device in the document information communication system of the seventh embodiment of the present invention. Terminal device  3701  comprises input operation unit  3702 , input control unit  3703 , document information storage unit  3704 , terminal device arrangement information storage unit  515 , terminal device capability information storage unit  3002 , element content-classified compression information storage unit  3705 , transmission document information creation unit  3706 , element data compression unit  3707 , transmission document information temporary storage unit  518  and transmission unit  519 . 
   The construction elements that are the same as terminal devices  501  and  3001  of the first and the sixth embodiment have been given the same reference numbers and no explanation is given. The following explanation will only focus on the differences. 
   In addition to the functions of the first embodiment, input operation unit  3702  receives the content of each document element  602 ,  603 , . . . ,  607  on receiving document  601  from the user. For example, it is possible to click on a title displayed in a form of a menu on the screen, which has been prepared beforehand for the document to be inputted. It is also possible to input the title with the keyboard. 
   In addition to the functions of input control unit  513  of the first embodiment, input control unit  3703  writes the inputted title in the content column  3802  in document information control table  3801  as shown in  FIG. 38  when the content of each document element is inputted. 
   Document information storage unit  3704  stores document information control table  3801  created by input control unit  3703 . Document information control table  3801  differs from document information table  701  of the first embodiment in that it includes content column  3802  in which title of each document element is written. 
   For example, the first row of the document element shows that media attribute is “character”, the content is “title”, the size is “19”, and element data is “Notice of a Meeting”. 
   Terminal device arrangement information storage unit  515  stores terminal device arrangement information  3101 , and terminal device capability information storage unit  3002  stores terminal device capability information  3201  like the case of the sixth embodiment. 
   Element content-classified compression information storage unit  3705  consists of memory and stores element content-classified compression information  3901  shown in  FIG. 39 . Element content-classified compression information  3901  shows the compression algorithm for the element data depending on the content of the document element, comprising media attribute column  3902 , document element content column  3903 , compression rate column  3904  and compression algorithm column  3905 . 
   According to  FIG. 39 , the first element data has “character” as its media attribute, “time” as its title, “any rate” as its compression rate, “convert the time display method and discard from the end” as its compression algorithm. For example, if the element data is “3:30”, the element data may be “3.30” with compression rate being “0.8” or it may be “3” with compression rate “0.2”. 
   The second element data has “character” as its media attribute and “place” as its title, “any rate” as its compression rate, and “discard from the end except for proper nouns” as its compression algorithm. 
   Element content-classified compression information storage unit  3705  stores proper noun dictionary  4001  shown in  FIG. 40 . Proper noun dictionary  4001  stores proper nouns for selecting proper nouns used compressing the above title “Place”. 
   Transmission document information creation unit  3706  refers to element content-classified compression information  3901  stored in element content-classified compression information storage unit  3705 , instead of referring to media attribute-classified compression information  3301  when transmission document information creation unit  3004  exceeds the receivable element data size in the sixth embodiment. 
   Under the same situation as the example of the sixth embodiment, transmission document information creation unit  3706  transfers the following to element data compression unit  3707 : the title “place”, the media attribute “character” and the element data of the content column  3802  of the element data so that the size of the element data “Place:             Building           Room” is compressed into “11”.
   On receiving the element data from transmission document information creation unit  3706 , element data compression unit  3707  reads the compression algorithm of the corresponding title in element content-classified compression information  3901  stored in element content compression information storage unit  3705 , compresses the element data into the transferred size according to the algorithm, and transfers the compressed size to transmission document information creation unit  3705 . 
   For example, if the title is “Place”, the compression algorithm is “discard characters one by one from the end except for proper nouns”. Therefore, the proper nouns “           ” and “         ” are detected by referring to proper noun dictionary  4001 . Characters are discarded one by one from the end except for “         ” and “         ”. If the element data size is “11”, the element data becomes “Place:          B          ”.
   As mentioned above, document information control table  3801  stored in document information storage unit  3704  is divided into transmission document control tables  4101  and  4201  in transmission document information temporary storage unit  518 . 
   The operations of the present embodiment are almost the same as the sixth embodiment except for Steps  3616 ,  3619  and  3620  in the flowchart in  FIG. 36 , The following explanation will focus on only the differences. 
   Transmission document information creation unit  3706  refers to element content-classified compression information  3901  and calculates the compressible size of the element data (Step  3616 ). 
   Transmission document information creation unit  3706  transfers the value obtained by the subtraction in Step  3618 , the element data, its media attribute and its title to element data compression unit  3703  (Step  3619 ). 
   Element data compression unit  3707  reads the compression algorithm of the title transferred from transmission document information creation unit  3706  in element content-classified compression information  3901 , converts it to the element data whose size is compressed to the notified value and transfers the converted element data to transmission document information creation unit  3706  (Step  3620 ). 
   As mentioned above, according to the present invention, element data can be compressed with unimportant data being deleted. Therefore, maximum information can be transmitted within the receivable data size of the transmission destination terminal device. 
   Eighth Embodiment 
     FIG. 43  shows the construction of the terminal device in the document information communication system of the eighth embodiment of the present invention. Terminal device  4301  comprises input operation unit  4302 , input control unit  4303 , document information storage unit  4304 , terminal device arrangement information storage unit  515 , terminal device capability information storage unit  3002 , transmission document information creation unit  4305 , transmission document information temporary storage unit  518  and transmission unit  519 . 
   Here, terminal device arrangement information storage unit  515 , transmission document information temporary storage unit  513  and transmission unit  519  are the same as the first embodiment, and terminal device capability information storage unit  3002  is the same as the sixth embodiment. Therefore they have just been given the same reference numbers without explanation. The following explanation will focus on the differences. 
   In addition to the functions of the input operation unit  512  of the first embodiment, input operation unit  4302  receives input of document elements  602 ,  603 , . . . ,  607 , each of them having priority. The priority shows importance and order of the document element to be outputted by the transmission destination terminal device, “1” representing the highest priority followed by “2”, “3” and “4” representing decreasing priorities. 
   In addition to the functions of input operation unit  513  of the first embodiment, input control unit  4303  receives the priority from input operation unit  512  and writes it in priority column  4408  for each document element  4402 ,  4403 , . . . ,  4407  shown in  FIG. 44  stored in document information storage unit  4304 . 
   Document information storage unit  4304  stores document information control table  4401 . According to document information control table  4401 , the transmission destination group is “B”, priority of the element data “Notice of a Meeting”, “Start: 3:30 p.m.” and “Place:            Building           Room” is “1”, and priority of the element data “End: 5:00 p.m.” is “2”. The same thing can be said about other element data.
   Terminal device arrangement information storage unit  515  has stored terminal device arrangement information  4501  shown in  FIG. 45  beforehand. In “B”, “character display pager” has been set. 
   Terminal device capability information storage unit  3002  has stored terminal capability information  4601  shown in FIG.  46  beforehand. According to terminal device capability information  4601 , “character pager” has “character” as its outputable media attribute and “60” as its receivable size. 
   On being activated by input control unit  4303 , transmission document information creation unit  4305  reads group name column  4409  in document information control table  4401  stored in document information storage unit  4303 . 
   Transmission document information creation unit  4305  sets “1” in priority counter I of the document element, checks if all flags are set in flag column  4502  of the terminal device which corresponds to the group name previously read in terminal device arrangement information  4501  stored in terminal device arrangement information unit  515 . If flags are set for all the terminal devices, transmission document information creation unit  4305  instructs transmission unit  519  to transmit the element data in the transmission document control table stored in transmission document information temporary storage unit  518 . If flags are not set for all the terminal devices, transmission document information creation unit  4305  reads the address and type of one terminal device which is not flagged, sets its flag and creates transmission control table  4701  shown in  FIG. 47  in transmission document information temporary storage unit  518 . 
   Transmission document information creation unit  4305  reads the media attribute and size of the type of the terminal device which was previously read in terminal device capability information  4601  stored in terminal device capability information storage unit  3002 . 
   Transmission document information creation unit  4305  determines whether there is a document element having priority “I” in document information control table  4401  stored in document information storage unit  4303 , the document element corresponding to the media attribute. If there is no such document elements, transmission document information creation unit  4305  increments priority counter I by “1” and determines whether the value of counter I is equal to or below the greatest value of the priority stored in document information control table  4401 . If this is the case, transmission document information creation unit  4305  determines whether there is a document element having priority “1” in document information control table  4401 , the document element corresponding to media attribute. When it exceeds the greatest value of the priority, transmission document information creation unit  4305  instructs transmission unit  519  to transmit the document data. 
   When there is a document element having priority “I”, transmission document information creation unit  4305  reads its size and determines whether the total of the size of the element data already written in the transmission document control table and the size of the element data is equal to or below the value of the seize previously read in terminal device capability information  4601 . 
   If this is the case, transmission document information creation unit  4305  writes the element data, media attribute and size in transmission document control table  4701 , sets a flag in flag column  4410  in document information control table  4401  and determines whether there is a document element having priority “I” whose media attribute corresponding to the outputable media attribute of the transmission destination terminal device. 
   If this is not the case, transmission document information creation unit  4305  refers to terminal device arrangement information  4501  and determines whether flags are sets for all transmission destination terminal devices. 
   When document information control table  4401  in  FIG. 44  is stored in document information storage unit  4304 , group name column  4409  shows that the transmission destination group is “B”, terminal device arrangement information  4501  shows that the type of terminal device is “document display pager” whose address is “06-321-7654”. Terminal device capability information  4601  shows that this “character pager” has “character” as its outputable media attribute and “60” as its receivable data size. 
   Therefore, it can be concluded that document elements  4402 – 4406  having “character” media attribute in document information control table  4401  can be outputted by the transmission destination terminal device. When the element data size of each document element having priority “I” is added, “19+16+25” becomes “60”. When the size “14” of the element data “End: 5:00 p.m.” having priority “2” is added “60” changes to “74”. It exceeds “60” which is the receivable size of the “character display pager”. 
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 48 . 
   First, transmission document information creation unit  4305  reads the group name of the document information control table and receives designation of the transmission destination group (Step  4802 ), sets “1” in priority counter I of the document element (Step  4804 ), determines if flags are set for the all terminal devices in the transmission destination group by checking terminal device arrangement information  4501  (Step  4806 ), returning to Step  4822  if this is the case, or otherwise reading one terminal device and setting its flag (Step  4808 ). After getting the outputable media attribute of the terminal device and receivable element data size in terminal device capability information  4601 , transmission document information creation unit  4305  determines whether there is a document element which corresponds to the media attribute having priority “1” (Step  4810 ), reading one document element if this is the case (Step  4812 ), or otherwise going to Step  4818 . Transmission document information creation unit  4305  determines the total of the seize of the element data and the size of the element data already written in transmission document control table  4701  is equal to or below the receivable size, going to Step  4806  if this is not the case, or otherwise writing the element data in transmission control table  4701  and setting a flag for the corresponding element data in document information control table  4401  (Step  4816 ). 
   In Step  4818 , transmission document information creation unit  4305  increments priority counter I of the document element by one, determines whether that value is equal to or below the greatest value of the priority written in document information control table  4401  (Step  4820 ), returning to Step  4310  if this is the case, or otherwise instructing transmission unit  519  to transmit the element data (Step  4822 ). 
   Transmission unit  519  transmits the element data to the transmission destination terminal device according to transmission document control table  4701  stored in transmission document information temporary storage unit  518  (Step  4824 ) and completes the processing. 
   As mentioned above, according to the present embodiment, priorities are given to document elements; document elements which can be outputted by the transmission destination terminal device is selected; and document elements are transmitted according to their order of priority. 
   Ninth Embodiment 
     FIG. 49  shows the construction of the ninth embodiment of the terminal device in the document information communication system of the present invention. 
   Terminal device  4901  comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  490 , outputable media attribute information storage unit  516 , transmission document information creation unit  4903 , transmission document information temporary storage unit  518  and transmission unit  519 . 
   The same construction elements with the first embodiment have been given the same reference numbers without explanation. The following explanation will focus on the differences. 
   Terminal device arrangement information storage unit  4902  has stored terminal device arrangement information  5001  shown in  FIG. 50  beforehand. Terminal device arrangement information  5001  includes group name column  5002 , address column  5003 , terminal device type column  5004 , terminal device priority column  5005  and flag column  5006 . 
   Priorities “1” and “2” stored in priority column  5005  show priorities of the terminal devices. In the case of “A”, priority “1” shows that the “character e-mail terminal” receives the document earlier than a “FAX”. When the “character e-mail terminal” cannot receive the document, the “FAX” receives the document. 
   Transmission document information creation unit  4903  has the following functions in addition to the functions of transmission document information creation unit  517  in the first embodiment. Transmission document information creation unit  4903  has priority counter J of the terminal device, sets “1” in the priority counter on receiving the indication of the transmission destination group. 
   Transmission document information creation unit  4903  determines if there are any terminal devices which are not flagged in terminal device arrangement information when flags are not set for all transmission destination terminal devices. If this is the case, transmission document information creation unit  4903  reads the terminal device, sets its flag, and writes the element data of the outputable media attribute of the terminal device in the transmission document control table like the case of the first embodiment. 
   If this in not the case, transmission document information creation unit  4903  increments priority counter J of the terminal device by “1” and determines if the value is equal to or below the greatest value of the priority of the group in terminal device arrangement information  5001 . If this is the case, transmission document information creation unit  4903  reads the terminal device, sets its flag and writes the element data of the outputable media attribute of the terminal device in the transmission document control table like the case of the first embodiment. 
   If this is not the case, transmission document information creation unit  4903  increments priority counter J of the terminal device by one and determines whether the value is equal to or below the greatest value of the priority of the group in terminal device arrangement information  5001 . If this is not the case, transmission document information creation unit  4903  instructs transmission unit  519  to transmit the element data. If this is the case, transmission document information creation unit  4903  determines again whether flags are set for all the transmission destination terminal devices. 
   For example, if document information control table  701  in  FIG. 7  is stored in document information storage unit  514 , transmission document control table  1001  shown in  FIG. 10  is created firstly, followed by transmission document control table  1101  in  FIG. 11 . 
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 51 . 
   Transmission document information creation unit  4903  reads the transmission destination group name (Step  5102 ), determines if flags are set for all terminal devices in the transmission destination group by referring to terminal device arrangement information  5001  (Step  5106 ), going to Step  5122  if this is the case, or otherwise determining whether there are terminal devices which are not flagged (Step  5108 ). 
   If there are any such terminal devices, transmission document information creation unit  4903  reads one terminal device having priority J and sets its flag (Step  5110 ). 
   Transmission document information creation unit  4903  obtains the outputable media attribute of the terminal device in the outputable media attribute information and determines whether there is element data having the same media attribute which is not flagged in the document information control table (Step  5112 ), returning to Step  5108  if this is the case, or otherwise reading the element data (Step  5114 ), writing it in the transmission document control table and setting its flag (Step  5116 ), and returning to Step  5112 . 
   In Step  5108 , transmission document information creation unit  4903  increments priority counter J by one (Step  5118 ), and determines if the value is equal to or below the greatest value of the priority of the terminal device of the group (Step  5120 ), returning to Step  5106  if this is the case, or otherwise returning to Step  5122 . In Step  5122 , transmission document information creation unit  4903  instructs transmission unit  519  to transmit the element data. 
   On receiving the indication of the transmission, transmission unit  519  transmits the element data written in the transmission document control table to the transmission destination terminal device (Step  5124 ) and completes the processing. 
   As mentioned above, according to the present embodiment, priorities have been given to the terminal devices belonging to the same group beforehand. And the transmission document is created according to the order of the priority. 
   Tenth Embodiment 
     FIG. 52  shows the construction of the terminal device in the document information communication system of the present embodiment. 
   Terminal device  5201  comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  515 , outputable media attribute information storage unit  516 , communication state inquiry reception unit  5202 , communication state inquiry response unit  5203 , transmission document information creation unit  5204 , transmission document information temporary storage unit  518  and transmission unit  505 . 
   The same construction elements with terminal device  501  of the first embodiment have been given the same reference numbers without explanation. The following explanation will focus on the differences. 
   Communication state inquiry reception unit  5202  receives an inquiry from another terminal device asking whether communication is possible. On receiving the inquiry, communication state inquiry reception unit  5202  notifies communication state inquiry response unit  5203  that it received the inquiry. 
   On receiving the notification from transmission unit  5205  that the communication is possible, communication state inquiry unit  5202  transfers the notification to transmission document information creation unit  5204 . 
   Communication state inquiry response unit  5203  receives the notification from communication state inquiry reception unit  5202  that it received the inquiry of the communication state. And communication state inquiry response unit  5203  instructs transmission unit  5205  to transmit the response that it can communicate with an another terminal device. 
   Terminal device arrangement information storage unit  515  has stored terminal device arrangement information  5301  shown in  FIG. 53  beforehand. According to terminal device arrangement information storage unit  515 , in group “A”, “portable information terminal”, “character e-mail terminal” and “FAX” are set. 
   Outputable media attribute information storage unit  516  has stored outputable media attribute information  5401  shown in  FIG. 54  beforehand. 
   Transmission document information creation unit  5204  has the following functions in addition to the functions of transmission document information creation unit  517  of the first embodiment. Transmission document information creation unit  5204  reads one transmission destination terminal device in terminal device arrangement information  5301  stored in terminal device arrangement information storage unit  515 , sets its flag, transfers the address of the terminal device to transmission unit  5205 , and instructs transmission unit  5205  to ask whether it is capable of communication with another terminal device. On receiving the notification that communication is possible from communication state inquiry reception unit  5202 , transmission document information creation unit  520  carries out the same processing as transmission document information creation unit  517  of the first embodiment. 
   After that, if no notification is obtained from communication state inquiry reception unit  5202  after a given time period, transmission document information creation unit  5204  determines that the communication is impossible with the termination device being outside of the communication area, power of the termination device being OFF or the terminal device being in communication with another terminal device. In this case, the transmission document control table for the terminal device is not created. 
   For example, in the case of document information control table  701  in  FIG. 7  being stored in document information storage unit  514 , transmission document information creation unit  5204  asks whether it is possible to communicate with “portable information terminal” whose address is “06-705-4321” via transmission unit  5205 . If there is no notification from communication state inquiry reception unit  5202  after a given time period, transmission document information creation unit  5204  determines that communication is impossible and asks “character e-mail terminal” whose address is “A@abc.def.jp” whether communication is possible. On receiving the notification that communication is possible from communication state inquiry reception unit  5202 , transmission document information creation unit  5204  creates transmission document control table  1001  shown in  FIG. 10 . Transmission document information creation unit  5204  asks “FAX” whose address is “06-123-4567” whether it is capable of communication. On receiving the notification that communication is possible, transmission document information creation unit  5204  creates transmission document control table  1101  shown in  FIG. 11 . 
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 55 . 
   First, transmission document information creation unit  5204  reads the transmission destination group from the document information control table (Step  5502 ), determines whether flags are set for all the terminal devices in the group in terminal device arrangement information (Step  5504 ), goes to Step  5516  if this is the case, or otherwise reads one terminal device which is not flagged in the group and sets its flag (Step  5506 ), asks the terminal device whether it is capable of communication with transmission unit  5205  via network  511  (Step  5508 ), returns to Step  5504  if this is the case, or otherwise obtains the outputable media attribute of the terminal device by referring to the outputable media attribute information (Step  5510 ). 
   Next, transmission document information creation unit  5204  creates the transmission document control table to be transmitted to the terminal device, writes the element data having outputable media attribute in the document information control table in the transmission document control table, sets its flag (Step  5512 ), and determines if flags are set for all of the element data (Step  5514 ), going to Step  5504  if this is not the case, or otherwise instructing transmission unit  5205  to transmit the element data (Step  5516 ). 
   Transmission unit  5205  transmits the content of the transmission document control table stored in transmission document information temporary storage unit  518  to the transmission destination terminal device via network  511  (Step  5518 ) and completes the processing. 
   As mentioned above, according to the present embodiment, as communication state of the transmission destination terminal device is checked, creation of the document to be transmitted to the terminal device incapable of communication can be avoided and only the document which can be communicated with another terminal device is created. 
   According to the present embodiment, each terminal device has its outputable media information. Instead of storing the outputable media attributes of all the terminal devices, each terminal device may store its own outputable media attribute and receivable element data size and transmit them in response to another terminal device. 
   Eleventh Embodiment 
     FIG. 56  shows the construction of the terminal device in the document information communication system of the eleventh embodiment of the present embodiment. 
   Terminal device  5601  comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  5602 , group state inquiry address information storage unit  5603 , outputable media attribute information storage unit  516 , group state inquiry response unit  5604 , group state inquiry reception unit  5605 , transmission document information creation unit  5606 , transmission document information temporary storage unit  513  and transmission unit  5607 . The same construction elements as terminal device  501  of the first embodiment have been given the same reference numbers without any explanations. The following explanation will only focus on the differences. 
   Terminal device arrangement information storage unit  5602  stores terminal device arrangement information  5701  shown in  FIG. 57 . Terminal device arrangement information  5701  has stored the following beforehand: group name column  5702 , type column  5703  showing type of terminal device belonging to that group, address column  5704  and flag column  5705 , all of which are the same ones in terminal device arrangement information  801  of the first embodiment, and priority column  5706  showing priority of the terminal device depending on the state of the group. 
   Here, the state of the group means circumstances of the user. For example, when the transmission destination group is an office, the user may be present in the office, on his or her way home, away from the office on business, at a meeting, etc. Depending on the circumstances of the user, each terminal device has different priorities. Accordingly, priorities have been determined for the terminal devices beforehand. 
   According to terminal device arrangement information  5701 , in group “A”, three terminal devices are set. When the state of the group is “meeting”, “character e-mail terminal” and “character display pager” have priority “1”. Accordingly, document information is transmitted to these terminal devices in the first place. When the entire document element cannot be transmitted to them, the rest of the document element is transmitted to “FAX” which has priority “2”. 
   Here, priority “0” means that the terminal device cannot be used. When the group state is “meeting”, document information is transmitted to “character e-mail terminal” having priority “1” firstly, and to “FAX” having priority “2” secondly. Nothing is transmitted to “character display pager” having priority “0”. 
   Group state inquiry address information storage unit  5603  stores group state inquiry address information  5801  as shown in  FIG. 58 . Group state inquiry address information  5801  stores one address for each group. The address is for asking the transmission destination group for its state. For example, in group “A”, “FAX” whose address is “06-123-4567” are designated. Group state inquiry response unit  5604  is necessary when terminal device  5601  corresponds to the terminal device designated by group state inquiry address information  5801 . It is not necessary in other cases. Group state inquiry response unit  5604  receives the user&#39;s input showing the circumstance of the user and stores it. For example, when the user comes back home from office, group state inquiry response unit  5604  receives input of “back home” and stores it as its group state. On receiving the notification that there was an inquiry of the group state from group state inquiry reception unit  5605 , group state inquiry response unit  5604  instructs transmission unit  5607  to transmit the group state to the terminal device which made the inquiry. 
   On receiving the state of the group to which the terminal device belongs from another terminal device, group state inquiry reception unit  5605  transfers it to transmission document information creation unit  5606 . 
   When terminal device  5601  has group state inquiry response unit  5604 , group state inquiry reception unit  5605  receives the inquiry of the state of the group to which terminal device  5601  belongs. On receiving the inquiry, group state inquiry reception unit  5605  transfers it to group state inquiry response unit  5604 . 
   In addition to the functions of transmission document information creation unit  4903  of the ninth embodiment, transmission document information creation unit  5606  has the following functions. Transmission document information creation unit  5606  reads the name of the group in the transmission document control table stored in document information storage unit  514 , reads the address of the terminal device of the group in group state inquiry address information unit  5801 , asks transmission unit  5607  for the state of the group, and transmits the address to transmission unit  5607 . On receiving the state of the group from group state inquiry reception unit  5605 , transmission document information creation unit  5606  creates the transmission document control table, using the priority corresponding to the state of the group in terminal device arrangement information  5701 , which is the same processing as the ninth embodiment. 
   In addition to the functions of transmission unit  519  of the first embodiment, transmission unit  5607  receives the inquiry of the group state and address of the terminal from transmission document information creation unit  5606  and transfers them to the terminal device designated by that address via network  511 . 
   The operations of the present embodiment are almost the same as the ninth embodiment. Only the following operations are added between Steps  5102  and  5104 . 
   On receiving the name of the transmission destination group, transmission document information creation unit  5606  reads the address of the terminal device in group state inquiry address information  5801 , transfers the address to transmission unit  5607  and instructs transmission unit  5607  to check the state of the group. 
   Transmission unit  5607  asks the terminal device designated by the address for its group state. When reception unit  5605  receives the state of the group from the terminal device, transmission unit  5607  transfers the state to transmission document information creation unit  5606 . 
   Transmission document information creation unit  5606  uses the priority corresponding to the transferred state as the priority of each terminal device. 
   As mentioned above, according to the present embodiment, by arrangement priority of the terminal device depending on the sate of the transmission destination group, terminal devices can be used efficiently by the user. 
   Twelfth Embodiment 
     FIG. 59  shows the construction of the terminal device in the document information communication system of the twelfth embodiment of the present embodiment. 
   Terminal device  5901  comprises input operation unit  512 , input control unit  513 , document information storage unit  514 , terminal device arrangement information storage unit  515 , outputable media attribute information storage unit  516 , transmission document information creation unit  5902 , document element transmission destination information storage unit  5903 , transmission destination information creation unit  5904 , transmission document information temporary storage unit  5905  and transmission unit  519 . 
   Transmission document information creation unit  5902  has the following functions in addition to the functions of transmission document information creation unit  516  of the first embodiment. 
   Transmission document information creation unit  5902  transcribes the element data and size of each document element read in the document information control table in the transmission document control table, sets a flag for each in the document information control table and writes the document element transmission destination information, which is a list of the document element, and the transmission destination terminal device in document element transmission destination information storage unit  5903 .  FIG. 60  shows document element transmission destination information  6001 . 
   Here, terminal device arrangement information  801  in  FIG. 8  is stored in terminal device arrangement information storage unit  515  and outputable media attribute information  901  in  FIG. 9  is stored in outputable media attribute information storage unit  516 . If document information control table  701  in  FIG. 7  is stored in document information storage unit  514 , transmission document control tables  1001  and  1101  are stored in transmission document information creation unit  5905 . Therefore, information  6007  which corresponds to transmission document control table  1001  and information  6008  which corresponds to transmission document control table  1101  are stored in document element transmission destination information  6001 . For example, element data  6004  “Notice of a Meeting” having “character” as its media attribute and “19” as its size will be transmitted to “character e-mail terminal” having address “A@abc.def.jp”. 
   When flags are set for all the transmission destination terminal devices or when flags are set for all of the element data, transmission document information creation unit  518  instructs transmission unit  519  to transmit the element data in the first embodiment. Instead, transmission document information creation unit  518  activates transmission destination information creation unit  5904  in the present embodiment. 
   Document element transmission destination information storage unit  5903  consists of memory and stores document element transmission destination information  6001  in  FIG. 60  created by transmission document information creation unit  5902 . 
   On being activated by transmission document information creation unit  5902 , transmission destination information creation unit  5904  successively reads the transmission document control tables stored in transmission document information temporary storage unit  5905 , compares the transmission document control table with document element transmission destination information  6001  stored in document element transmission destination information storage unit  5903  and obtains the transmission destination address of the element data which is not included in the transmission document control table. 
   Transmission destination information creation unit  5904  stores a set phrase “part of the document has been sent to ***”, inserts the obtained address in *** and handles it as appended data. Transmission destination information creation unit  5904  converts the appended element data into media attribute (which can be outputted by the transmission destination terminal device) which is the same media attribute with other element data in the transmission document control table and writes it in the transmission document control table. At this time, transmission destination information creation unit  5904  writes the media attribute and its size. 
     FIG. 61  shows transmission document control table  6101  created in the above mentioned way. Transmission document control unit  6101  comprises part  6102  created by transmission document information creation unit  5902  and part  6103  created by transmission destination information creation unit  5404 . Part  6102  corresponds to transmission document control table  1001  of the first embodiment. 
     FIG. 62  shows transmission document control table  6202  having “FAX” whose address is “06-123-4567” as the transmission destination terminal device. Here, element data “YYYYY . . . ” shows that appended data of “part of the document has been transmitted to A@abc.def.jp” is converted to “monochrome still picture” which can be outputted by the terminal device. 
   Transmission destination information creation unit  5904  instructs transmission unit  519  to transmit the content of the transmission document control table when creation of the additional element data is completed for all the transmission document control tables. 
   Transmission document information temporary storage unit  5905  stores transmission document control tables  6101  and  6201  created by transmission document information creation unit  5902  and transmission destination information creation unit  5904 , respectively.  FIGS. 61 and 62  show transmission document control tables  6102  and  6201 . 
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 63 . As Steps  6302 – 6310  are the same as Steps  1402 – 1410  of the first embodiment, explanation for them are not given here. 
   Transmission document information creation unit  5902  writes the address and type of document element transcribed into the transmission document control table in transmission document information temporary storage unit  5905  and its transmission destination terminal device in the document element transmission destination information of test element transmission destination information storage unit  5903  (Step  6312 ) and determines if flags are set for all of the element data in the document information control table (Step  6314 ), returning to Step  6304  if this is not the case, or otherwise activating transmission destination information creation unit  5904 . 
   Transmission destination information creation unit  5904  reads one transmission document control table (Step  6316 ), compares it with document element transmission destination information  6001  and obtains the transmission destination address of the document element which is not included in the transmission document control table (Step  6318 ). Transmission destination information creation unit  5904  inserts the obtained address into the set phrase which has been stored beforehand and writes the set phrase into the transmission document control table as appropriate additional element data (Step  6320 ), determines if all the transmission document control tables have been read (Step  6322 ), returning to Step  6316  if this is not the case, or otherwise instructing transmission unit  519  to transmit the content of the transmission document control table (Step  6324 ). 
   Transmission unit  519  successively transmits the content of the transmission document control table stored in transmission document information temporary storage unit  5905  to the transmission destination terminal device via the network according to the indication by transmission information creation unit  5904  (Step  6326 ) and completes the processing. 
   According to the present embodiment, each type of terminal device has stored the outputable media attribute information of other terminal devices as well as its own media attribute information. However, it may also possible to ask the transmission destination terminal for the outputable media attribute information like the case of the second embodiment. 
   The present embodiment ensures that the document information is transmitted to the user for sure because the user can know the document element which was not transmitted to one terminal device by the first transmission was transmitted to which terminal device by the second transmission when the document element is divided and transmitted to a plurality of terminal devices. 
   Thirteenth Embodiment 
     FIG. 64  shows the construction of the terminal device of the document information communication system of the thirteenth embodiment of the present embodiment. 
   Terminal device  6401  comprises first document information reception unit  6402 , first document information storage unit  6403 , transmission request unit  6404 , request reception unit  6405 , transmission unit  6406 , second document information reception unit  6407 , second document information storage unit  6408  and document information unification unit  6409 . 
   First document information reception unit  6402  receives the document information from transmission unit  519  of the first to twelfth embodiments. On receiving the document information, first document information reception unit  6402  makes first document information storage unit  6403  store it and activates transmission request unit  6404 . 
   First document information storage unit  6403  stores document information  6501  in  FIG. 6  which was received by first document information reception unit  6403 . Document information  6501  stores document information body  6502  and address information  6503  of another terminal device belonging to the same group as terminal device  6401 . 
   On being activated by first document information reception unit  6402 , transmission request unit  6404  reads address information  6503  of document information  6501  stored in first document information storage unit  6403  and requests the terminal device designated by the address to transmit the document information. 
   On receiving the transmission request of the document information from another terminal device in the same group, request reception unit  6405  instructs transmission unit  6406  to transmit the document information stored in first document information storage unit  6403  to the another terminal device. 
   Transmission unit  6406  transmits the document information stored in first document information storage unit  6403  to the terminal device which requested the transmission. 
   On receiving the document information transmitted from another terminal device, second document information reception unit  6407  makes secant document information storage unit  6408  to store it and activates document information unification unit  6409 . 
   Second document information storage unit  6408  stores document information  6601  shown in  FIG. 66 . 
   On being activated by second document information reception unit  6407 , document information unification unit  6409  reads document information body  6502  having “character” media attribute stored in first document information storage unit  6403  and document information  6601  having “monochrome still picture” media attribute stored in second document information storage unit  6407 . Document information unification unit  6409  creates document information  6701  shown in  FIG. 67 , having document information body  6502  and document information  6601 . 
   Document information unification unit  6409  has a function of converting different media attributes in order to unify them in document information or a function to unify the different media attributes as they are. 
   The operations of the present embodiment can be explained as follows by means of the flowchart in  FIG. 68 . 
   When first document information reception unit  6402  in terminal device  6401  receives the first document information (Step  6802 ), it makes first document information storage unit  6403  temporarily store it (Step  6804 ). 
   Transmission request unit  6404  reads the address information included in the first document information and requests the terminal device having that address to transmit the second document information (Step  6806 ). 
   When second document information reception unit  6407  receives the second document information from the terminal device (Step  6808 ), it makes second document information storage unit  6408  temporarily store it (Step  6810 ). 
   Document information unification unit  6409  unifies the first document information stored in first document information storage unit  6403  and the second document information stored in the second document information storage unit  6408  (Step  6812 ), and completes the processing. 
   As mentioned above, according to the present embodiment, when the transmission document is divided into document elements so as to be transmitted to a plurality of terminal devices, the original document can be reproduced at the receiver&#39;s end, because each terminal devices may ask another terminal device for their document elements by using the address added to the document information that the terminal device received, and may unit them with the document elements each terminal device received in the first place. This is very useful when the whole document information cannot be transmitted to one terminal device due to its limited reception capacity. 
   In the present embodiment, the case where the original document was reproduced from two sets of document information was explained, although it is also possible to use three or more sets of document information. In such cases, address information of other terminal devices is added to document information  6501 . Also, in the present embodiment, document information unification unit  6409  just unifies the two sets of document information using the address information. However, it may also possible that either or both document information is added information on how to unify them. For example, coordinates may have been added to both document information  6501  and document information  6601 . 
   Fourteenth Embodiment 
     FIG. 69  shows the construction of the document information communication system of the fourteenth embodiment of the present invention. In this document information communication system, a plurality of terminal devices  6901 ,  6902 , . . . ,  6908  are connected via network  6909 . Each of the terminal devices belongs to groups  6910 , . . . ,  6913 , respectively. 
   Terminal device  6901  comprises document information storage unit  6014  and transmission unit  6915 . The same thing can be said to other terminal devices. 
   Relay device  6900  is set in network  6909 , relay device comprising reception unit  6916 , document information storage unit  6917 , terminal device arrangement information storage unit  6918 , terminal device capability information storage unit  6919 , transmission document information creation unit  6920 , and transmission document information temporary storage unit  6921 . 
   Document information storage unit  6914  stores the document information control table like the cases of the first to twelfth embodiments. Transmission unit  6915  transmits the document information control table stored in document information storage unit  6914  as it is to reception unit  6916  in relay device  6900 . 
   Explanation of each of the construction elements of relay device  6900  in network  6909  is not given here as it is almost the same as terminal device  501  of the first embodiment except that it comprises reception unit  6916  instead of input operation unit  512  and input control unit  513 . 
   Reception unit  6916  makes document information storage unit  6917  stored the document information control table it received and activates transmission document information creation unit  6920 . 
   Eventually, instead of transmission unit  519  of the first embodiment, transmission unit  6922  in relay device  6906  in this network transmits the document information to the transmission destination terminal device. 
   As mentioned above, according to the present embodiment, relay device  6900  in network  6909  can carry out the creation of the transmission document control tables created by each transmission destination terminal device. Therefore, construction of each terminal device can be simplified and futile communication does not occur between relay device  6900  and the transmission destination terminal device. 
   Relay device  6900  can include each construction elements of the first to the twelfth embodiment. 
   Although the present invention has been fully described by way of examples with reference to the accompanying drawings, it is to be noted that various changes and modifications will be apparent to those skilled in the art. Therefore, unless such changes and modifications depart from the scope of the present invention, they should be construed as being included therein.