JP2014030091A - Conference system, conference apparatus, conference control method, and conference program - Google Patents

Abstract

Provided are a conference system, a conference device, a conference control method, and a conference program for transmitting material information only when a user on the transmission destination device side needs the material information.
[Solution]
The conference system is a system that performs a conference by transmitting and receiving data between the first conference device 11 and the second conference device 21 installed at different bases. When sharing of the shared material is started, link information indicating an access destination to the reference material information is transmitted from the first conference device 11 to the second conference device 21 (S11). The reference material information is stored in the HDD of the first server 12. When the second conference device 21 cannot acquire the reference material information from the access destination based on the link information (S26: NO), an access failure notification is transmitted from the second conference device 21 to the first conference device 11 (S28). The first conference device 11 acquires reference material information from the first server 12 (S15) and transmits it to the second conference device 21 (S16).
[Selection] Figure 9

Description

  The present invention relates to a conference system, a conference device, a conference control method, and a conference program that perform a conference by transmitting and receiving data.

  Conventionally, a system including an apparatus that transmits and receives data is known. In such a system, when a data transmission destination device can acquire document information such as a document, the transmission source device does not transmit the material information itself to the transmission destination device. Some of them transmit link information such as an address of a storage device in which is stored. The destination device can access the storage device storing the material information from the link information, acquire the material information, and display it on the display.

  However, for example, a transmission destination device may belong to a network (for example, an external LAN) different from a network (for example, an in-house LAN) to which the transmission source device and the storage device belong. In this case, when the destination device acquires the material information from the link information, for example, the storage device cannot be accessed due to the influence of a firewall or the like, and the material information may not be acquired. Therefore, if the destination device belongs to the same network as the source device, link information is transmitted to the destination device, and if the destination device belongs to a different network from the source device, the document information There is a transmission source device configured to transmit itself to another device (see, for example, Patent Document 1).

JP 2006-201869 A

  In the above conventional system, when the transmission destination device belongs to a different network from the transmission source device, the transmission destination device cannot acquire the material information from the link information. Sent to the device. For this reason, the user on the transmission destination apparatus side can acquire the material based on the transmitted material information when the material information is required. However, even when the user on the transmission destination device side does not need the material information, the material information is transmitted from the transmission source device to the transmission destination device. In this case, there is a problem that the material information is transmitted although the user on the transmission destination apparatus side does not need the material information.

  An object of the present invention is to provide a conference system, a conference device, a conference control method, and a conference program that transmit material information only when a user on the transmission destination device side needs the material information.

  A conference system according to a first aspect of the present invention is a conference system for performing a conference by transmitting and receiving data between a first conference device and a second conference device installed at different bases, wherein the first conference The apparatus includes a link information transmitting unit that transmits link information indicating an access destination to the material information to the second conference device, and the requested information when the second conference device requests transmission of the material information. Material information acquisition means for acquiring material information from the access destination; and material information transmission means for transmitting the material information acquired by the material information acquisition means to the second conference device, wherein the second conference device comprises: A link information receiving means for receiving the link information transmitted by the link information transmitting means; and the access based on the link information received by the link information receiving means. An acquisition determination unit that determines whether the material information can be acquired, and requests the first conference device to transmit the material information when the acquisition determination unit determines that the material information cannot be acquired. Transmission request means, and material information reception means for receiving the material information transmitted by the material information transmission means in response to a request from the transmission request means.

  In this case, link information is transmitted from the first conference device to the second conference device. For this reason, the second conference apparatus can acquire the material information from the access destination based on the link information. When the second conference device cannot acquire the material information from the access destination based on the link information, the first conference device acquires the material information from the access destination and transmits it to the second conference device. That is, when the user on the second conference device side acquires the material information, the second conference device acquires the material information regardless of whether the material information can be directly acquired from the access destination based on the link information. be able to. For this reason, the first conference device does not need to send the material information to the second conference device in advance, and transmits the material information only when the user of the second conference device needs the material information. can do.

  In the conference system, the first conference device further includes first format notification means for notifying the second conference device of a file format in which the document information can be converted, and the transmission request unit of the second conference device includes , Requesting the material information in the file format notified by the first format notification means to the first conference device, the material information transmission means of the first conference device is acquired by the material information acquisition means, The material information converted into the file format of the material information requested by the transmission requesting unit may be transmitted to the second conference device. In this case, the material information transmission unit of the first conference device can transmit the material information converted into the file format requested by the transmission request unit to the second conference device. Therefore, for example, the second conference device can acquire the material information converted into a file format that can be displayed by the second conference device.

  In the conference system, the second conference device may include second format notification means for notifying the first conference device of a file format of the material information that can be displayed on a display unit. In this case, the second conference device can notify the first conference device of the file format of the material information that can be displayed on the display unit. For this reason, for example, the 1st conference apparatus can transmit the material information of the file format which the 2nd conference apparatus can display to the 2nd conference apparatus.

  In the conference system, the material information transmission unit of the first conference device transmits the material information acquired by the material information acquisition unit and the file format of the material information requested by the transmission request unit to a server. The material information converted into the file format of the material information requested by the transmission request means by causing the server to transmit the material information converted into the file format from the server to the second conference device. May be transmitted to the second conference device. In this case, for example, the second conference device can acquire the material information converted into a file format that can be displayed by the second conference device by the server.

  In the conference system, the material information transmission unit of the first conference device converts the material information acquired by the material information acquisition unit into a file format of the material information requested by the transmission request unit, The material information converted into the file format of the material information requested by the transmission requesting means is transmitted to the second conference device by transmitting the converted material information to the server and transmitted from the server to the second conference device. It may be sent to the device. In this case, the second conference device can acquire the material information converted into a file format that can be displayed by the second conference device.

  A conference device according to a second aspect of the present invention is a conference device that performs a conference by transmitting and receiving data to and from a second conference device installed at a different base, and a link indicating an access destination to material information Link information transmitting means for transmitting information to the second conference device, and second information when the second conference device cannot acquire the material information from the access destination based on the link information transmitted by the link information transmitting device. When a request for transmission of the material information is received from the conference device, the material information acquisition means for acquiring the requested material information and the material information acquired by the material information acquisition means are transmitted to the second conference device. Material information transmission means. In this case, the conference device does not need to transmit the material information to the second conference device in advance, and transmits the material information only when the user of the second conference device needs the material information. Can do.

  A conference device according to a third aspect of the present invention is a conference device that performs a conference by transmitting and receiving data to and from a first conference device installed at a different base, and is transmitted from the first conference device. A link information receiving unit for receiving link information indicating an access destination to the material information; and determining whether the material information can be acquired from the access destination based on the link information received by the link information receiving unit. An acquisition determination unit; a transmission request unit that requests transmission of the material information when the acquisition determination unit determines that the material information cannot be acquired; and the first meeting according to a request from the transmission request unit Material information receiving means for receiving the material information transmitted from the apparatus. In this case, the conference device does not need to transmit the material information to the second conference device in advance, and transmits the material information only when the user of the second conference device needs the material information. Can do.

  The conference control method according to the fourth aspect of the present invention is a conference control method executed in a conference system that performs a conference by transmitting and receiving data between a first conference device and a second conference device installed at different bases. The steps executed in the first conference device include a link information transmission step for transmitting link information indicating an access destination to the material information to the second conference device, and the material information from the second conference device. Material information acquisition step for acquiring the requested material information from the access destination, and a material for transmitting the material information acquired by the material information acquisition step to the second conference device. An information transmission step, wherein the step executed in the second conference device receives the link information transmitted by the link information transmission step. A link information receiving step, an acquisition determining step for determining whether the material information can be acquired from the access destination based on the link information received by the link information receiving step, and the material information by the acquisition determining step. The material information transmitted by the material information transmission step in response to a request by the transmission request step, and a transmission request step for requesting the first conference device to transmit the material information. A material information receiving step for receiving the information. In this case, the first conference device does not need to transmit the material information to the second conference device in advance, and transmits the material information only when the user of the second conference device needs the material information. can do.

  A conference program according to a fifth aspect of the present invention is a conference program that is executed in a conference device that performs a conference by transmitting and receiving data to and from a second conference device installed at a different base, the conference device A link information transmission step for transmitting link information indicating an access destination to the document information to the second conference device, and the second destination from the access destination based on the link information transmitted in the link information transmission step. When the conference device cannot acquire the material information, when the second conference device requests transmission of the material information, it is acquired by the material information acquisition step for acquiring the requested material information and the material information acquisition step. And a material information transmission step of transmitting the material information to the second conference device. In this case, the conference device does not need to transmit the material information to the second conference device in advance, and transmits the material information only when the user of the second conference device needs the material information. Can do.

  A conference program according to a sixth aspect of the present invention is a conference program that is executed in a conference device that performs a conference by transmitting and receiving data to and from a first conference device installed at a different location, the conference device A link information reception step for receiving link information transmitted from the first conference device indicating an access destination to the material information, and the access destination based on the link information received by the link information reception step. An acquisition determination step for determining whether the material information can be acquired from, a transmission request step for requesting transmission of the material information when the acquisition determination step determines that the material information cannot be acquired, and Material information reception for receiving the material information transmitted from the first conference device in response to a request in the transmission request step To perform the steps. In this case, the first conference device does not need to send the material information to the second conference device in advance, and the user on the second conference device side only needs the material information when the material information is required. Can be received.

It is a figure showing conference system 1 concerning a first embodiment. 2 is a block diagram of an electrical configuration of a first conference device 11. FIG. 3 is a block diagram of an electrical configuration of a second conference device 21. FIG. 2 is a block diagram of an electrical configuration of a first server 12. FIG. It is a figure which shows the display part 216 in the state where the shared material 51 was displayed. It is a flowchart of a 1st process. It is a flowchart of a 2nd process. It is a flowchart of a 3rd process. It is a state transition diagram of each device of the first embodiment. It is a figure which shows the display part 216 of the state by which the reference material 52 was additionally displayed. It is a figure which shows the conference system 2 which concerns on 2nd embodiment. 3 is a block diagram of an electrical configuration of a second server 32. FIG. It is a flowchart of a 4th process. It is a flowchart of a 5th process. It is a flowchart of the 6th processing. It is a state transition diagram of each device of the second embodiment. It is a figure which shows the display part 216 of the state by which the conversion candidate display 512 was displayed on the link 511 vicinity.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The conference system 1 will be described with reference to FIG. The conference system 1 is a system that performs a remote conference using at least audio between different bases (first base 10 and second base 20). The conference system 1 includes a first conference device 11, a second conference device 21, and a first server 12. The first conference device 11 and the second conference device 21 are personal computers.

  The first conference device 11 and the first server 12 are arranged at the first base 10. The second conference device 21 is disposed at the second site 20. The devices arranged at the first site 10 such as the first conference device 11, the first server 12, and other devices not shown in the figure are connected to each other by a local area network (LAN). The devices arranged at the second base 20, such as the second conference device 21 and other devices not shown, are connected to each other by a LAN. In the following description, it is assumed that the first base 10 and the second base 20 are different companies. The LAN at the first base 10 is referred to as a first LAN, and the LAN at the second base 20 is referred to as a second LAN.

  The first conference device 11 at the first site 10 and the second conference device 21 at the second site 20 are connected to each other via the Internet 30. A user of the first conference device 11 and a user of the second conference device 21 can conduct a remote conference (Web conference) via the Internet 30.

  The electrical configuration of the first conference device 11 will be described with reference to FIG. The first conference device 11 includes a CPU 110 that controls the first conference device 11. The CPU 110 is electrically connected to the ROM 111, RAM 112, hard disk drive (HDD) 113, communication interface (communication I / F) 114, external interface (external I / F) 115, display unit 116, speaker 117, microphone 118, and drive device 119. Connected. The ROM 111 stores a boot program, BIOS, and the like. The RAM 112 stores temporary data. The HDD 113 stores a control program for the CPU 110 and the like. The CPU 110 communicates with the second conference device 21 via the communication I / F 114 and the Internet 30. Further, the CPU 110 communicates with the first server 12 via the communication I / F 114 and the first LAN. A mouse 16 is connected to the external I / F 215. The user of the first conference device 11 can input various instructions to the CPU 110 by operating the mouse 16. The drive device 119 reads information stored in the storage medium 14. The storage medium 14 stores a program such as the first process in the present embodiment. The program stored in the storage medium 14 is read by the drive device 119 and stored in the HDD 113. Note that the program such as the first process in the present embodiment may be downloaded via the communication I / F 114 instead of the storage medium 14 and stored in the HDD 113. In this case, it can be said that a program such as the first process in the present embodiment is stored in a storage medium such as an HDD provided in an external distribution server as a download source.

  The electrical configuration of the second conference device 21 will be described with reference to FIG. The second conference device 21 includes a CPU 210 that controls the second conference device 21. The CPU 210 is electrically connected to the ROM 211, RAM 212, HDD 213, communication I / F 214, external I / F 215, display unit 216, speaker 217, microphone 218, and drive device 219. The ROM 211 stores a boot program, BIOS, and the like. The RAM 212 stores temporary data. The HDD 213 stores a control program for the CPU 210 and the like. The CPU 210 communicates with the first conference device 11 via the communication I / F 214 and the Internet 30. A mouse 26 is connected to the external I / F 215. The user of the second conference device 21 can operate the mouse 16 to move the cursor 50 (see FIG. 5) and input various instructions to the CPU 210. The drive device 219 reads information stored in the storage medium 24. The storage medium 24 stores a program such as the second process in the present embodiment. The program stored in the storage medium 24 is read by the drive device 219 and stored in the HDD 213. Note that the program such as the second process in the present embodiment may be downloaded not via the storage medium 24 but via the communication I / F 214 and stored in the HDD 213. In this case, it can be said that a program such as the second process in the present embodiment is stored in a storage medium such as an HDD provided in an external distribution server as a download source.

  The electrical configuration of the first server 12 will be described with reference to FIG. The first server 12 includes a CPU 120 that controls the first server 12. The CPU 120 is electrically connected to the ROM 121, RAM 122, HDD 123, communication I / F 124, and drive device 129. The ROM 121 stores a boot program, BIOS, and the like. The RAM 122 stores temporary data. The HDD 123 stores a control program for the CPU 120 and the like. The HDD 123 stores reference material information. The reference material information is information of the reference material 52 (see FIG. 10) used in the remote conference. The CPU 120 communicates with the first conference device 11 via the communication I / F 124 and the first LAN. The drive device 129 reads information stored in the storage medium 17. The storage medium 17 stores a program such as a third process in the present embodiment. The program stored in the storage medium 17 is read by the drive device 129 and stored in the HDD 123. Note that the program such as the third process in the present embodiment may be downloaded via the communication I / F 124 instead of the storage medium 17 and stored in the HDD 123. In this case, it can be said that a program such as the third process in the present embodiment is stored in a storage medium such as an HDD provided in an external distribution server as a download source.

  The shared material 51 will be described with reference to FIG. The shared material 51 is stored in the HDD 113 of the first conference device 11. The shared material 51 is a material shared between the first conference device 11 and the second conference device 21 by S11 (see FIG. 6), S21, and S22 (see FIG. 7) described later. The document sharing is a state in which the same document is displayed on the display unit among a plurality of devices, and writing and editing of the document can be performed in each device. When materials are shared, users at multiple locations can easily collaborate as if they were viewing the materials at the same location.

  FIG. 5 shows a state in which the shared material 51 is displayed on the display unit 216 of the second conference device 21. Similarly, the shared material 51 is displayed on the display unit 116 on the display unit 116 of the first conference device 11. The shared material 51 is displayed based on shared material information that is data of the shared material 51. A link 511 “reference material” is displayed in the shared material 51. The characters “reference material” are displayed based on link information to reference material information. The reference material information is data of the reference material 52 (see FIG. 10). The link information is data indicating an access destination to the reference material information. The link information is included in the shared material information. When the user of the second conference device 21 operates the mouse 26 to move the cursor 50 and selects the link 511 “reference material”, the process of acquiring reference material information is executed. In the present embodiment, the reference material information is stored in the HDD 123 of the first server 12. For this reason, the link information is address information of the first server 12.

  Processing in the present embodiment will be described with reference to FIGS. Hereinafter, a case where the user of the second conference device 21 causes the display unit 216 to display the reference material 52 in a state where the shared material 51 is shared (see FIG. 10) will be described as an example. In addition, the code | symbol of each process step shown in FIG. 9 respond | corresponds to the code | symbol of each process step of the flowchart shown in FIGS. In the following description, various notifications and information transmitted / received between the devices are transmitted / received according to a predetermined communication protocol. Although not shown in FIGS. 6 to 9, the audio acquired by the microphones 118 and 218 is transmitted and received between the first conference device 11 and the second conference device 21 and reproduced by the speakers 117 and 217. . Thereby, a remote conference by voice is performed. Note that a camera may be provided in the first conference device 11 and the second conference device 21, and a remote conference may be performed while transmitting and receiving an image captured by the camera.

  First, with reference to FIG.6 and FIG.9, the 1st process by CPU110 of the 1st conference apparatus 11 is demonstrated. When executing the first process, the CPU 110 reads the program for the first process stored in the HDD 113, expands it in the RAM 112, and executes the process. The first process is started when the user operates the mouse 16 and inputs an instruction to execute the first process. As shown in FIGS. 6 and 9, sharing of the shared material 51 (see FIG. 5) is started between the first conference device 11 and the second conference device 21 (S11). When the shared material 51 is shared, the CPU 110 of the first conference device 11 reads the shared material information of the shared material 51 from the HDD 113 and stores it in the RAM 112. The CPU 110 displays the shared material 51 (see FIG. 5) on the display unit 116 based on the shared material information stored in the RAM 112. In addition, the CPU 110 transmits the shared material information read from the HDD 113 to the second conference device 21. Alternatively, the shared material information may be transmitted to the second conference device 21 after being converted into a predetermined format that can be displayed by the second conference device 21. In the shared material information, link information to reference material information is provided. For this reason, the CPU 110 transmits reference material information to the second conference device 21 together with the shared material information (S11). The CPU 210 of the second conference device 21 displays the shared material 51 on the display unit 216 based on the transmitted shared material information (S22 in FIG. 7). Then, the shared material 51 is set to be shared between the first conference device 11 and the second conference device 21. Various known methods can be used as a method for setting the shared material 51 in a shared state.

  Next, it is determined whether or not an instruction to end sharing of the shared material 51 is input (S12). In S12, for example, when an instruction to end the remote conference or an instruction to end sharing of the shared material 51 is input by an operation of the user of the first conference device 11, an instruction to end sharing of the shared material 51 is issued. It is determined that it has been input (S12: YES). If sharing of the shared material 51 is not terminated (S12: NO), it is determined whether an access failure notification transmitted in S28 (see FIG. 7) of the second conference device has been received (S13). The access failure notification is a notification indicating that the second conference device 21 has failed to access the access destination indicated by the link information. If an access failure notification has not been received (S13: NO), the process returns to S12.

  When the access failure notification is received (S13: YES), a material request notification requesting transmission of the reference material information of the reference material 52 is transmitted to the first server 12 (S14). The transmitted material request notification is received by S41 of the first server 12 (see FIG. 8). Next, it is determined whether or not the material information transmitted by S42 of the first server 12 has been received (S15). If the material information has not been received (S15: NO), S15 is repeated. When the material information is received (S15: YES), the reference material information received in S15 is transmitted to the second conference device 21 (S16). The transmitted material information is received by S30 (see FIG. 7) of the second conference device 21. Next, the process returns to S12.

  In the process of S12, when an instruction to end the sharing of the shared material 51 is input (S12: YES), the sharing of the shared material 51 is ended (S17). In S <b> 17, the display of the shared material 51 is deleted from the display unit 116. In addition, a notification to end the sharing of the shared material 51 is transmitted to the second conference device 21. Next, the first process is terminated. As described above, the first process of this embodiment is executed.

  With reference to FIG.7 and FIG.9, the 2nd process by CPU210 of the 2nd conference apparatus 21 is demonstrated. When executing the second process, the CPU 210 reads a program for the second process stored in the HDD 213, expands it in the RAM 212, and executes the process. The second process is started, for example, when the user operates the mouse 16 to input an instruction to execute the second process, or when a notification for starting a remote conference is received from the first conference device 11. .

  As shown in FIGS. 7 and 9, in the second process, it is determined whether sharing of the shared material 51 is started (S21). In S21, sharing of the shared material 51 is started by S11 (see FIG. 6) of the first conference device 11, and it is determined whether or not the shared material information transmitted from the first conference device 11 is received. It is determined whether sharing of the shared material 51 has started. Since the shared material information includes link information, when the shared material information is received, the link information is also received.

  When sharing of the shared material 51 is not started (S21: NO), the process of S21 is repeated. When sharing of the shared material 51 is started (S21: YES), sharing of the shared material 51 is set (S22). For example, another window based on the shared material information is displayed inside a predetermined window opened on the display unit 216 by the second process. The shared material 51 includes link information indicating an access destination to the reference material information. By performing the process of S22, the shared material 51 is displayed, and the link 511 “reference information” based on the link information is displayed (see FIG. 5).

  Next, it is determined whether or not the sharing of the shared material 51 is terminated (S23). In S23, it is determined whether or not the sharing of the shared material 51 is ended by determining whether or not the notification for ending the sharing of the shared material 51 transmitted in S17 of the first conference device 11 is acquired. Is done. When sharing of the shared material 51 is not terminated (S23: NO), it is determined whether or not the link 511 in the shared material 51 is selected by the user operating the cursor 50 with the mouse 26 (S24). If the link 511 is not selected (S24: NO), the process returns to S23.

  When the link 511 is selected (S24: YES), access to the access destination indicated by the link information is executed (S25). Next, as a result of S25, it is determined whether or not the access destination indicated by the link information has been accessed (S26). In other words, it is determined whether or not the reference material information can be acquired from the access destination based on the link information. When the access destination indicated by the link information can be accessed (S26: YES), reference material information is acquired from the access destination (S27). That is, the reference material information is transmitted from the access destination to the second conference device 21 and received by the second conference device 21. Next, S31 described later is executed.

  The first base 10 to which the first server 12 belongs and the second base 20 to which the second conference device 21 belongs are different networks (first LAN and second LAN). For this reason, when the 2nd conference apparatus 21 of the 2nd base 20 accesses the 1st server 12, it may be unable to access the 1st server 12 by the influence of the firewall etc. by the side of the 1st base 10, for example. In this case, the second conference apparatus 21 cannot directly acquire the reference material information from the first server 12 and receives a signal indicating that access is denied from the firewall or the like on the first base 10 side. Therefore, in this embodiment, the second conference device 21 acquires reference material information via the first conference device 11.

  When the reference material information cannot be acquired from the access destination (S26: NO), an access failure notification is transmitted to the first conference device (S28). Next, it is determined whether or not the reference material information transmitted by S16 of the first conference device 11 is received in response to the access failure notification (S30). When the reference material information is not received (S30: NO), the process of S30 is repeated.

  As described above, the first conference device 11 that has received the access failure notification in S13 acquires reference material information from the first server 12 (S14 and S15 in FIG. 6), and transmits it to the second conference device 21 (FIG. 6). 6 S16). When the reference material information is received (S30: YES), S31 is executed. That is, the reference material information acquired (received) in S27 or S30 is stored in the RAM 212 (S31). Note that the reference material information may be stored in the HDD 213. Next, the reference material 52 based on the reference material information stored in the RAM 212 is displayed on the display unit 216 (S32). As a result, in addition to the shared material 51 shown in FIG. 5, the reference material 52 is displayed on the display unit 216 (see FIG. 10). Next, the process returns to S23. The user of the second conference device 21 can perform a remote conference while referring to the reference material 52 in addition to the shared material 51.

  If sharing of the shared material 51 is terminated in S23 (S23: YES), sharing of the shared material 51 is terminated (S33). In S33, the display of the shared material 51 is erased from the display unit 216. Next, the second process is terminated.

  With reference to FIG.8 and FIG.9, the 3rd process by CPU120 of the 1st server 12 is demonstrated. When executing the third process, the CPU 120 reads the program for the third process stored in the HDD 123, expands it in the RAM 122, and executes the process. As shown in FIGS. 8 and 9, it is determined whether or not the material request notification transmitted by S14 (see FIG. 6) of the first conference device 11 is received (S41). If the document request notification has not been received (S41: NO), S41 is repeated. When the material request notification is received (S41: YES), the reference material information requested by the material request notification is read from the HDD 123, and the read reference material information is transmitted to the first conference device 11 (S42). ). The transmitted reference material information is received by S15 (see FIG. 6) of the first conference device 11, and is transmitted to the second conference device 21 in S16 (see FIG. 6). Next, the process returns to S41.

  As described above, the processing in this embodiment is executed. In the present embodiment, when sharing the shared material 51, link information is transmitted from the first conference device 11 (CPU 110) to the second conference device 21 (CPU 210) (S11). For this reason, the 2nd conference apparatus 21 can acquire reference material information from the access destination based on link information (S27). When the second conference device 21 cannot obtain the reference material information from the access destination (S26: NO), the first conference device 11 obtains the reference material information from the access destination (S15) and transmits it to the second conference device 21. (S16). The second conference device 21 can acquire the transmitted reference material information (S30). As described above, when the user on the second conference device 21 side needs the reference material information, the second conference device 21 is related to whether or not the reference material information can be directly acquired from the access destination based on the link information. First, reference material information can be acquired. For this reason, the first conference device 11 does not need to transmit the reference material information to the second conference device 21 in advance, and is referred only when the user on the second conference device side needs the reference material information. Document information can be transmitted. For this reason, the traffic amount of a communication line can be reduced.

  In the first embodiment, the CPU 110 that performs the process of transmitting link information in S11 corresponds to the “link information transmitting unit” of the present invention. The CPU 110 that performs the process of S15 corresponds to the “material information acquisition unit” of the present invention. The CPU 110 that performs the process of S16 corresponds to the “material information transmission unit” of the present invention. The CPU 210 that performs the process of receiving link information in S21 corresponds to the “link information receiving means” of the present invention. The CPU 210 that performs the process of S26 corresponds to the “acquisition determining means” of the present invention. The CPU 210 that performs the process of S28 corresponds to the “transmission request unit” of the present invention. The CPU 210 that performs the process of S30 corresponds to the “material information receiving means” of the present invention.

  The process of transmitting link information in S11 corresponds to the “link information transmission step” of the present invention. The process of S15 corresponds to the “material information acquisition step” of the present invention. The process of S16 corresponds to the “material information transmission step” of the present invention. The process of receiving link information in S21 corresponds to the “link information receiving step” of the present invention. The process of S26 corresponds to the “acquisition determination step” of the present invention. The process of S28 corresponds to the “transmission request step” of the present invention. The process of S30 corresponds to the “material information receiving step” of the present invention.

  In addition, this invention is not limited to said 1st embodiment, A various change is possible. For example, link information is included in shared material information. However, the link information is not included in the shared material, but only the link information may be transmitted from the first conference device 11 to the second conference device 21.

  In addition, although the reference material 52 based on the reference material information is displayed on the display unit 216 in S32, it may not be displayed. For example, the reference material 52 may be stored only in a storage device such as the HDD 213. Further, the second conference apparatus 21 may transmit the reference material information received in S27 or S30 to another apparatus.

  Further, the link 511 is displayed based on the link information, and the access to the access destination is automatically started by selecting the link 511 (S24: YES, S25). However, it is not limited to this. For example, the link 511 displayed based on the link information may be a character string of an access destination address where the reference material information is stored. Then, the user of the second conference device 21 operates the mouse 26 to copy the character string of the address displayed on the link 511, and inputs it to the software for accessing the access destination. The conference device 21 may be started to access the access destination (S25).

  Moreover, although it was the 1st conference apparatus 11 and the 2nd conference apparatus 21 that were performing the remote conference, you may increase the number of apparatuses which perform a remote conference. Moreover, although the 1st conference apparatus 11 and the 2nd conference apparatus 21 were personal computers, it is not limited to this. For example, the first conference device 11 and the second conference device 21 may be devices dedicated to remote conferences.

  Further, the reference material information may be transmitted to the second conference device 21 after being converted into various file formats. Further, when the first conference device 11 transmits reference material information to the second conference device 21, it may be transmitted to the second conference device 21 via another device (server or the like). Hereinafter, a second embodiment which is a modification of these will be described.

  A conference system 2 according to the second embodiment will be described. As shown in FIG. 11, a second server 32 is added to the conference system 2 in addition to the conference system 1 of the first embodiment shown in FIG. 1. The second server 32 is connected to the Internet 30. The first conference device 11 and the second conference device 21 can access the second server 32. The second server 32 is provided at a base different from the first base 10 and the second base 20. If the first conference device 11 and the second conference device 21 can access the second server 32, the second server 32 may be provided at the first base 10 or the second base 20.

  The electrical configuration of the second server 32 will be described with reference to FIG. The second server 32 includes a CPU 320 that controls the second server 32. The CPU 320 is electrically connected to the ROM 321, RAM 322, HDD 323, communication I / F 324, and drive device 329. The ROM 321 stores a boot program, BIOS, and the like. The RAM 322 stores temporary data. The HDD 323 stores a control program for the CPU 320 and the like. The CPU 320 communicates with the first conference device 11 and the second conference device 21 via the communication I / F 324 and the Internet 30. The drive device 329 reads information stored in the storage medium 18. The storage medium 18 stores a program such as the sixth process in the present embodiment. The program stored in the storage medium 18 is read by the drive device 329 and stored in the HDD 323. Note that the program such as the sixth process in the present embodiment may be downloaded via the communication I / F 324 instead of the storage medium 18 and stored in the HDD 323. In this case, it can be said that a program such as the sixth process in the present embodiment is stored in a storage medium such as an HDD provided in an external distribution server as a download source.

  Processing in this embodiment will be described with reference to FIGS. In the following description, processes similar to those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Also, the reference numerals of the processing steps shown in FIG. 16 correspond to the reference numerals of the processing steps of the flowcharts shown in FIGS.

  First, the fourth process performed by the CPU 110 of the first conference device 11 will be described with reference to FIGS. 13 and 16. When executing the fourth process, the CPU 110 reads the program for the first process stored in the HDD 113, expands it in the RAM 112, and executes the process. The fourth process is started when the user operates the mouse 16 and inputs an instruction to execute the first process. As shown in FIGS. 13 and 16, the processes of S11 to S13 are performed as in the first embodiment. If an access failure notification is received (S13: YES), it is determined whether a list of displayable file formats transmitted in S72 (see FIG. 14) of the second conference device 21 has been received (S51). . The displayable file format is a file format that can be displayed on the display unit 216 by the CPU 210 of the second conference apparatus 21. For example, the Word (registered trademark) format, the Pdf (registered trademark) format, and the Excel (registered trademark) format. Format.

  If the list of displayable file formats has not been received (S51: NO), the process returns to S51. When the list of displayable file formats is received (S51: YES), the convertible file format is confirmed (S52). The convertible file format is a file format in which the CPU 110 of the first conference device 11 can convert the reference material information. In S52, the HDD 113 of the first conference device 11 is referred to, and the convertible file format is confirmed by confirming the software for converting the reference material information.

  Next, a list of file formats that match the displayable file format received in S51 and the convertible file format confirmed in S53 (hereinafter referred to as “matching list”) is created (S53). That is, the match list is a list in a file format that can be displayed by the second conference device 21 and converted by the first conference device 11. Next, the match list created in S53 is transmitted to the second conference device 21 (S54). The transmitted match list is received in S73 (see FIG. 14) of the second conference device 21.

  Next, it is determined whether or not the converted file format transmitted in S76 (see FIG. 14) of the second conference device 21 has been received (S55). The conversion file format is a file format selected by the user of the second conference device 21 from the match list, and is a file format that causes the first conference device 11 to convert the reference material information. If the converted file format has not been received (S55: NO), the process of S55 is repeated. When the converted file format is received (S55: YES), a material request notification is transmitted to the first server 12 (S14), as in the first embodiment, and it is determined whether or not reference material information has been received. (S15).

  When the reference material information is received (S15: YES), the reference material information received in S15 is converted into the file format indicated by the converted file format received in S55 (S56). If the file format of the reference material information received in S15 is the same as the file format indicated by the conversion file format, the file format need not be converted. Next, the reference material information converted in S56 is transmitted to the second server 32 (S57). The transmitted reference material information is received by S91 (see FIG. 15) of the second server 32.

  Next, it is determined whether the address information transmitted by S93 (see FIG. 15) of the second server 32 has been received (S58). The address information received in S58 indicates the address of the location where the reference material information transmitted in S57 is stored by the second server 32. If the address information has not been received (S58: NO), the process of S58 is repeated.

  When the address information is received (S58: YES), the received address information is transmitted to the second conference device 21 (S59). The transmitted address information is received by S77 (see FIG. 14) of the second conference device 21. Next, the process returns to S12. In S12, when sharing of the shared material 51 is ended (S12: YES), sharing of the shared material 51 is ended (S17). Next, the fourth process is ended.

  With reference to FIG.14 and FIG.16, the 5th process by CPU210 of the 2nd conference apparatus 21 is demonstrated. When executing the fifth process, the CPU 210 reads the program of the first process stored in the HDD 213, expands it in the RAM 212, and executes the process. As shown in FIGS. 14 and 16, the processes of S21 to S26 are executed as in the first embodiment. When the access destination can be accessed (S26: YES), the reference material information is acquired (S27) as in the first embodiment. When the access destination cannot be accessed (S26: NO), an access failure notification is transmitted to the first conference device 11 as in the first embodiment (S28). Next, the displayable file format is confirmed (S71). In S71, the HDD 213 is referred to, and the displayable file format is confirmed by confirming the displayable file format by the installed software.

  Next, the list of displayable file formats confirmed in S71 is transmitted to the first conference device 11 (S72). The transmitted list of displayable file formats is received by S51 of the first conference device 11 (see FIG. 13). Next, it is determined whether or not the matching list transmitted by S54 of the first conference device 11 has been received (S73). If the match list has not been received (S73: NO), the process of S73 is repeated.

  When the match list is received (S73: YES), the convertible file format included in the match list near the link 511 in the shared material 51 is displayed as the file format of the conversion candidate (S74). For example, it is assumed that the Word format, PDF format, and Excel format are included in the match list as convertible file formats. In this case, as shown in FIG. 17, a conversion candidate display 512 that is a display of “Word”, “Pdf”, and “Excel” is displayed on the display unit 216 (S74).

  Next, whether or not one of the conversion candidate file formats displayed on the conversion candidate display 512 is selected by the operation of the mouse 26 by the user, in other words, one of the conversion candidate file formats is selected. It is determined whether or not an input to the effect is received from the mouse 26 (S75). If not selected (S75: NO), the process of S75 is repeated. If selected (S75: YES), the selected file format is transmitted to the first conference device 11 as a converted file format (S76). The transmitted conversion file format is received by S55 of the first conference device 11. Next, it is determined whether or not the address information transmitted by S59 of the first conference device 11 has been received (S77). If address information has not been received (S77: NO), S77 is repeated. When the address information is received (S77: YES), a material request notification requesting transmission of reference material information is transmitted to the second server 32 based on the address information received in S77 (S78). The transmitted material request notification is received in S94 of the second server 32 (see FIG. 15).

  Next, it is determined whether or not the reference material information transmitted by S95 (see FIG. 15) of the second server 32 has been received (S79). When the reference material information is not received (S79: NO), the process of S79 is repeated. When the reference material information is received (S79: YES), the received reference material information is stored (S31) and displayed on the display unit 216 (S32), as in the first embodiment. As a result, as shown in FIG. 10, the reference material 52 is displayed on the display unit 216. Next, the process returns to S23. In S23, when sharing of the shared material 51 is terminated (S23: NO), sharing of the shared material 51 is terminated (S33). Next, the second process is terminated. Since the process of the first server 12 is the same as the third process (see FIG. 8) of the first embodiment, the description is omitted.

  With reference to FIG.15 and FIG.16, the 6th process by CPU320 of the 2nd server 32 is demonstrated. When executing the sixth process, the CPU 320 reads the program for the third process stored in the HDD 323, expands it in the RAM 322, and executes the process. As shown in FIG.15 and FIG.16, it is judged whether the reference material information transmitted by S57 of the 1st conference apparatus 11 was received (S91). When the reference material information is not received (S91: NO), the process of S91 is repeated. When the reference material information is received (S91: YES), the received reference material information is stored in the HDD 323 (S92). Next, address information indicating the location where the reference material information is stored is transmitted to the first conference device (S93). In this embodiment, since the reference material information is stored in the HDD 323 of the second server 32, the address information of the second server 32 is transmitted. For example, when the second server 32 transmits reference material information to another device and the reference material information is stored in the other device, the location (address information) of the other device is transmitted.

  Next, it is determined whether or not the material request notification transmitted in S78 of the second conference device 21 has been received (S94). When the document request notification is not received (S94: NO), the process of S94 is repeated. When the material request notification is received (S94: YES), the reference material information stored in the HDD 323 is transmitted to the second conference device 21 (S95). The transmitted reference material information is received in S79 (see FIG. 14) of the second conference device 21. Next, the process returns to S91.

  As described above, the processing in this embodiment is executed. In the present embodiment, when the second conference device 21 cannot acquire the reference material information from the access destination (first server 12) (S26: NO), the first conference device 11 acquires the reference material information from the access destination (S15). ) And transmitted to the second server 32 (S57). The second conference device 21 can acquire reference material information from the second server 32 (S79). That is, the first conference device 11 can transmit the reference material information requested from the second conference device 21 to the second server 32, and can cause the second server 32 to transmit the reference material information to the second conference device 21. . Therefore, even if the second conference device 21 cannot access the first server 12, the reference material information can be acquired. Similarly to the first embodiment, when the second conference apparatus 21 can access the access destination (first server 12) based on the link information, the reference material information can be acquired from the access destination (S27). As described above, when the user on the second conference device 21 side needs the reference material information, the second conference device 21 is related to whether or not the reference material information can be directly acquired from the access destination based on the link information. First, reference material information can be acquired. Therefore, the first conference device 11 does not need to transmit the reference material information to the second conference device 21 in advance, and only when the user on the second conference device side needs the reference material information. Information can be sent. For this reason, the traffic amount of a communication line can be reduced.

  Further, the second conference device 21 transmits a displayable file format that is a file format that can be displayed on the display unit 216 to the first conference device 11 (S72). In other words, the second conference device can notify the first conference device 11 of the file format of the reference material information that can be displayed on the display unit 216. For this reason, the first conference device 11 can recognize the displayable file format of the second conference device 21. As a result, the match list includes a list of displayable file formats, and the file format of the reference material information received in S79 is a displayable file format. As described above, the first conference device 11 can transmit the reference material information in a file format that can be displayed by the second conference device 21 to the second conference device 21 via the second server 32 (S15, S57). , S95). Further, the second conference device 21 can receive the reference material information in a file format that can be displayed on the display unit 216.

  The match list transmitted from the first conference device 11 to the second conference device 21 in S54 is a list of file formats that can be displayed by the second conference device 21 and converted by the first conference device 11. is there. That is, the first conference apparatus 11 can notify the second conference apparatus of a file format that can convert the reference material information (S54). Then, the second conference device 21 requests the first conference device 11 for the notified reference material information in a convertible file format (S76). And the 1st conference apparatus 11 can transmit the reference material information converted into the file format requested | required of the 2nd conference apparatus 21 to the 2nd conference apparatus 21 via the 2nd server 32 (S15, S57, S95). The file format conversion of the reference material information is performed by the first conference device 11 (S56). Thus, since the file format of the reference material information is converted, the second conference device 21 can acquire the material information converted into a file format that can be displayed by the second conference device 21 (S79).

  In the present embodiment, the CPU 110 that performs the process of transmitting link information in S11 corresponds to the “link information transmitting unit” of the present invention. The CPU 110 that performs the process of S15 corresponds to the “material information acquisition unit” of the present invention. The CPU 110 that performs the processes of S56, S57, and S59 corresponds to the “material information transmitting unit” of the present invention. The CPU 210 that performs the process of receiving link information in S21 corresponds to the “link information receiving means” of the present invention. The CPU 210 that performs the process of S26 corresponds to the “acquisition determining means” of the present invention. The CPU 210 that performs the processes of S28 and S76 corresponds to the “transmission request unit” of the present invention. The CPU 210 that performs the process of receiving the reference material information transmitted to the second server 32 in S57 of the CPU 110 in S79 corresponds to the “material information receiving unit” of the present invention. The CPU 110 that performs the process of S54 corresponds to the “first type notification unit” of the present invention. The CPU 210 that performs the process of S72 corresponds to the “second format notification unit” of the present invention.

  The process of transmitting link information in S11 corresponds to the “link information transmission step” of the present invention. The process of S15 corresponds to the “material information acquisition step” of the present invention. The processing of S57 and S59 corresponds to the “material information transmission step” of the present invention. The process of receiving link information in S21 corresponds to the “link information receiving step” of the present invention. The process of S26 corresponds to the “acquisition determination step” of the present invention. The processes of S28 and S76 correspond to the “transmission request step” of the present invention. The process of S79 corresponds to the “material information receiving step” of the present invention.

  In addition, this invention is not limited to said 2nd embodiment, A various change is possible. For example, the first conference device 11 (CPU 110) transmits reference material information to the second server 32 (S57), transmits address information to the second conference device 21 (S59), and the second conference device 21 The reference material information can be received from the second server 32 (S78 and S79). As a result, the first conference device 11 has transmitted the reference material information to the second conference device 21. However, the aspect in which the first conference device 11 transmits the reference material information to the second conference device 21 is not limited to this. For example, the second server 32 that has received the reference material information from the first conference device 11 may transmit the reference material information to the second conference device 21 without transmitting the address information to the first conference device 11. Further, the second server 32 may transmit the address information directly to the second conference device 21 instead of the first conference device 11. In this case, the second conference device 21 can acquire reference material information from the second server 32 based on the address information. Further, the first conference device 11 may directly transmit the reference material information to the second conference device 21 instead of transmitting the reference material information to the second server 32.

  When the conversion candidate display 512 (see FIG. 17) is displayed (S74), the order of display of the file format may be changed. For example, the file formats may be displayed from the top in the order of the file formats that are frequently requested for conversion. In this case, for example, the first conference apparatus 11 (CPU 110) stores the number of times received for each type of file format in the HDD 113 or the like for the converted file format received a plurality of times in the past in S55. Then, when transmitting the match list in S54, the first conference device 11 transmits the match list in which the file formats are arranged in descending order. Alternatively, for example, the second conference device 21 (CPU 210) stores the number of file formats selected in S75 in the HDD 213 or the like for each type of file format. Then, the matching list received in S73 is arranged on the display unit 216 in order of the selected number of times (S74). In this case, the conversion candidate display 512 (see FIG. 17) is displayed in the order of the file formats that are frequently requested for conversion, so that convenience for the user is improved.

  Further, for example, the file format may be displayed in ascending order of data amount after the reference material information is converted. In this case, for example, when transmitting the match list in S54, the first conference device 11 transmits the match list arranged in ascending order of the data amount. When the conversion candidate display 512 (see FIG. 17) is displayed in order from the smallest data amount after converting the reference material information, a file format with a small data amount is easily selected by the user. Therefore, when the reference material information whose file format is converted in S57 is transmitted in S57 and S95, the data amount can be reduced. Therefore, the traffic amount of the communication line can be reduced.

  Further, for example, the file format may be displayed in the order of short time required for converting the reference material information. In this case, for example, when transmitting the match list in S54, the first conference device 11 transmits the match list arranged in the order of short time required for converting the reference material information. When the conversion candidate display 512 (see FIG. 17) is displayed in order from the shortest time required for converting the reference material information, a file format having a short time required for conversion is easily selected by the user. Therefore, the time when the file format is converted in S56 can be shortened.

  Further, when two or more conference devices perform a remote conference, the file formats may be displayed in order of the largest number of conference devices that can be displayed among the file formats that can be displayed on the display unit of each conference device. In this case, for example, the first conference device 11 (CPU 110) acquires a list of displayable file formats from each conference device after the sharing of the shared material is started (S11). When the match list is created in S52, the match list is created by arranging the file formats in the descending order of the conference devices that can be displayed based on the list of displayable file formats of each conference device. In this case, it is easy for the user to select a file format with many conference devices that can be displayed. Therefore, there is a high possibility that the same conversion file format is required by a plurality of conference apparatuses. Therefore, when the first conference apparatus 11 is requested by one conference apparatus and the file format is converted in S56, when the conversion to the same file format is requested by another conference apparatus, the reference material information is again obtained. Reference material information that has already been created can be transmitted without conversion. Therefore, the processing load of the CPU 110 of the first conference device 11 can be reduced.

  Further, although a match list is created and the conversion file format is determined from the match list, the present invention is not limited to this. For example, the first conference apparatus 11 (CPU 110) does not have to create and transmit a match list when a displayable file format is received (S51: YES). In this case, for example, the reference material information may be converted by determining a file to be converted from the received displayable file format. Further, the second conference device 21 may not transmit the displayable file format. For example, the first conference device 11 transmits a convertible file format to the second conference device 21. Then, the second conference device 21 may determine a conversion file format from the received convertible file formats and transmit it to the first conference device 11.

  Moreover, when the 1st conference apparatus 11 and the 2nd conference apparatus 21 transmit / receive various data, you may perform all via the 2nd server 32. FIG. Further, the second conference device 21 may transmit the access failure notification to the second server 32 in the process of S28. In this case, the second server 32 that has received the access failure notification requests the first conference device 11 to transmit the reference material information, acquires the reference material information via the first conference device 11, and the second conference device 21. May be sent to. Further, the second server 32 may directly acquire the reference material information from the first server 12 and transmit the acquired reference material information to the second conference device 21.

  The file format conversion has been performed by the first conference device 11 (S56), but is not limited thereto. For example, it may be performed by the second server 32 (CPU 320). In this case, for example, in S52, when the convertible file format is confirmed, the CPU 320 of the second server 32 acquires the convertible file format from the second server 32. The first conference device 11 creates a match list from the acquired convertible file format (S54). The CPU 320 of the second server 32 executes a process (S56) for converting the reference material information into the conversion file format. More specifically, the first conference device 11 does not perform the process of converting the reference material information into the conversion file format (S56), and transmits the reference material information acquired in S15 to the second server 32 (S57). Then, the converted file format received in S55 is transmitted to the second server 32. Then, the CPU 320 of the second server 32 converts the reference material information received in S91 into a conversion file format. Then, the reference material information is transmitted to the second conference device 21 (S95).

  In this case, the first conference apparatus 11 transmits the converted file format and the reference material information requested in S76 of the second conference apparatus 21 to the second server 32, and the reference in which the file format is converted by the second server 32. The material information is transmitted from the second server 32 to the second conference device 21 (S95). In this manner, the first conference device 11 can transmit the reference material information converted into the conversion file format requested in S76 of the second conference device 21 to the second conference device 21. Thus, since the file format of the reference material information is converted, the second conference device 21 can acquire the reference material information converted into a file format that can be displayed by the second conference device 21 (S79). .

  Further, the file format conversion may be performed by the first server 12. In this case, for example, when the conversion file format is confirmed in S <b> 52, the first conference device 11 (CPU 110) acquires a file format that can be converted by the CPU 120 of the first server 12 from the first server 12. The first conference device 11 creates a match list from the acquired convertible file format (S53) and transmits it to the second conference device 21 (S54). The first conference device 11 receives the converted file format transmitted from the second conference device 21 (S55). The first conference device 11 transmits a material request notification to the first server 12 (S14), and transmits the converted file format received in S55 to the first server 12. Then, the first server 12 (CPU 120) converts the reference material information based on the material request notification into the received conversion file format. Then, the first server 12 transmits the converted reference material information to the first conference device 11 (S42). Since the first server 12 converts the reference material information file, the second conference device 21 can acquire the reference material information converted into a file format that can be displayed by the second conference device 21 (S79). .

1, 2 Conference system 11 First conference device 12 First server 21 Second conference device 32 Second server 51 Shared material 52 Reference material 110, 120, 210, 320 CPU
511 links

Claims (10)

A conference system that performs a conference by transmitting and receiving data between a first conference device and a second conference device installed in different bases,
The first conference device
Link information transmitting means for transmitting link information indicating an access destination to the document information to the second conference device;
Material information acquisition means for acquiring the requested material information from the access destination when requested to transmit the material information from the second conference device;
Material information transmission means for transmitting the material information acquired by the material information acquisition means to the second conference device;
The second conference device
Link information receiving means for receiving the link information transmitted by the link information transmitting means;
Acquisition determination means for determining whether the material information can be acquired from the access destination based on the link information received by the link information receiving means;
A transmission requesting unit for requesting the first conference device to transmit the material information when the acquisition determining unit determines that the material information cannot be acquired;
A conference system comprising: material information receiving means for receiving the material information transmitted by the material information transmitting means in response to a request from the transmission request means. The first conference device further comprises first format notification means for notifying the second conference device of a file format that can convert the material information,
The transmission request unit of the second conference device requests the material information of the file format notified by the first format notification unit to the first conference device,
The material information transmitting means of the first conference device sends the material information acquired by the material information acquiring device and converted into the file format of the material information requested by the transmission requesting device to the second conference device. The conference system according to claim 1, wherein the conference system is transmitted.   3. The conference according to claim 1, wherein the second conference device includes second format notification means for notifying the first conference device of a file format of the material information that can be displayed on a display unit. system.   The material information transmission means of the first conference device transmits the material information acquired by the material information acquisition means and the file format of the material information requested by the transmission request means to a server, By sending the material information converted into the file format from the server to the second conference device, the material information converted into the file format of the material information requested by the transmission request unit is converted into the second conference. The conference system according to claim 2, wherein the conference system is transmitted to a device.   The material information transmitting means of the first conference device converts the material information acquired by the material information acquiring means into a file format of the material information requested by the transmission requesting means, and the converted material information. Is transmitted to the server, and the document information converted into the file format of the document information requested by the transmission request unit is transmitted to the second conference device by causing the server to transmit to the second conference device. The conference system according to claim 2. A conference device that performs a conference by transmitting and receiving data to and from a second conference device installed at a different base,
Link information transmitting means for transmitting link information indicating an access destination to the document information to the second conference device;
Requested when the second conference device requests transmission of the material information when the second conference device cannot acquire the material information from the access destination based on the link information transmitted by the link information transmission means. Material information acquisition means for acquiring the material information;
A conference apparatus comprising: material information transmission means for transmitting the material information acquired by the material information acquisition means to the second conference apparatus. A conference device that performs a conference by transmitting and receiving data to and from a first conference device installed at a different base,
Link information receiving means for receiving link information transmitted from the first conference device and indicating an access destination to material information;
Acquisition determination means for determining whether the material information can be acquired from the access destination based on the link information received by the link information receiving means;
A transmission request means for requesting transmission of the material information when it is determined that the material information cannot be acquired by the acquisition determination means;
A conference apparatus comprising: material information receiving means for receiving the material information transmitted from the first conference apparatus in response to a request from the transmission request means. A conference control method executed in a conference system that performs a conference by transmitting and receiving data between a first conference device and a second conference device installed at different bases,
The steps executed in the first conference device include:
A link information transmission step of transmitting link information indicating an access destination to the document information to the second conference device;
A material information acquisition step for acquiring the requested material information from the access destination when the second conference device requests transmission of the material information;
A material information transmission step of transmitting the material information acquired by the material information acquisition step to the second conference device;
The steps executed in the second conference device include:
A link information receiving step for receiving the link information transmitted by the link information transmitting step;
An acquisition determination step of determining whether the material information can be acquired from the access destination based on the link information received by the link information reception step;
A transmission request step for requesting the first conference device to transmit the material information when it is determined that the material information cannot be acquired by the acquisition determination step;
A conference control method comprising: a material information receiving step of receiving the material information transmitted by the material information transmitting step in response to a request by the transmission requesting step. A conference program that is executed in a conference device that performs a conference by transmitting and receiving data to and from a second conference device installed in a different base,
In the controller of the conference device,
A link information transmission step of transmitting link information indicating an access destination to the document information to the second conference device;
Requested when the second conference device requests transmission of the material information when the second conference device cannot acquire the material information from the access destination based on the link information transmitted in the link information transmission step. A material information acquisition step for acquiring the material information;
A conference program for executing the material information transmission step of transmitting the material information acquired in the material information acquisition step to the second conference device. A conference program that is executed in a conference device that performs a conference by transmitting and receiving data to and from a first conference device installed in a different base,
In the controller of the conference device,
A link information receiving step for receiving link information transmitted from the first conference device and indicating an access destination to the material information;
An acquisition determination step of determining whether the material information can be acquired from the access destination based on the link information received by the link information reception step;
A transmission request step for requesting transmission of the material information when it is determined that the material information cannot be acquired by the acquisition determination step;
A meeting program for executing a material information receiving step for receiving the material information transmitted from the first conference device in response to a request in the transmission requesting step.

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