JP7826738B2 - Information processing device, information processing system, and information processing program - Google Patents

Description

The technology of the present invention relates to an information processing device, a terminal device, an information processing system, and an information processing program.

There are technologies that restrict the use of uploaded content.
Patent document 1 discloses a content providing server that accumulates content data uploaded from user devices and provides the content data to the user devices, characterized in that the content providing server is equipped with means for automatically recognizing the content data when the content data is uploaded from the user devices, and control means for changing the way in which the content data is provided to other user devices depending on the content data recognition results.

Japanese Patent Application Laid-Open No. 2008-217048

In preparation for the possibility that the communication quality of a remote conference may be unstable, the person projecting the materials during the remote conference may distribute the materials in advance to the viewers who will be viewing the projected materials.

However, if materials are distributed to viewers, there is a risk that they may be used by the viewers without the permission of the projector.

The technology disclosed herein aims to provide an information processing device, terminal device, information processing system, and information processing program that can limit use by viewers.

The information processing device according to the first aspect includes a processor, and when the communication quality of a terminal device used by either a projector who projects a document in a remote conference or a viewer who views the projected document is unstable, the processor allows the viewer's terminal device to acquire pre-stored document data for the document.

In the information processing device according to the second aspect, in the information processing device according to the first aspect, if the communication quality of any of the multiple viewer terminal devices is unstable, the processor allows the viewer terminal device with unstable communication quality to acquire the material data.

In the information processing device according to the third aspect, in the information processing device according to the second aspect, the processor permits the terminal device of the viewer that belongs to the same network as the terminal device of the viewer whose communication quality is unstable to acquire the material data.

In the information processing device of the fourth aspect, which is the information processing device of any one of the first to third aspects, the processor allows each of the multiple viewers' terminal devices to acquire the material data when the communication quality of the projector's terminal device is unstable.

In the information processing device of the fifth aspect, in the information processing device of any one of the first to fourth aspects, the processor receives meta information regarding the display mode of the material, including the page number of the page on which the material is projected, from the terminal device of the projector, and transmits the meta information to the terminal device of the viewer each time the processor receives the meta information from the terminal device of the projector.

In the information processing device of the sixth aspect, the processor transmits the meta information to the viewer's terminal device each time a request to transmit the meta information is received from the viewer's terminal device.

In the information processing device of the seventh aspect, which is the information processing device of any one of the first to sixth aspects, the processor permits acquisition of the material data so that the material data is temporarily stored on the viewer's terminal device until the end of the remote conference.

The terminal device according to the eighth aspect includes a processor, and when the communication quality of an external device used by either the projector who projects the materials for a remote conference or the viewer who views the projected materials is unstable, the processor acquires the material data from an information processing device that stores the material data for the materials.

A terminal device according to a ninth aspect is the terminal device according to the eighth aspect, wherein the processor displays the acquired material data in place of the projected material in the display area where the projected material is displayed.

A terminal device according to a tenth aspect is the terminal device according to the ninth aspect, in which the processor receives meta information regarding the display mode of the projected material, and displays the material data in the display area, reflecting processing according to the meta information.

In the terminal device of the eleventh aspect, in the terminal device of the tenth aspect, the processor receives the meta information including the page number of the page on which the material is projected, and displays the page of the acquired material data corresponding to the page number in the display area.

A terminal device according to a twelfth aspect is a terminal device according to the eleventh aspect, in which, if the page displayed in the display area is changed to another page in response to an operation by the viewer, when the processor receives the meta information including the page number, the processor does not display the page corresponding to the received page number in the display area.

A terminal device according to a thirteenth aspect is a terminal device according to any one of aspects ten to twelfth, in which the processor receives the meta information including range information of the range in which the material is projected, and based on the received range information, displays the range in the display area superimposed on the material data.

A terminal device according to a 14th aspect is a terminal device according to any one of the 10th to 13th aspects, in which the processor receives the meta information including position information of the position of a pointer projected onto the material, and displays the pointer in the display area at the position indicated by the received position information, superimposed on the material data.

A terminal device according to a fifteenth aspect includes a processor, and when the communication quality of an external device used by either a projector projecting materials for a remote conference or a viewer viewing the projected materials is unstable, the processor transmits meta-information regarding the display mode of the materials.

The information processing system according to the sixteenth aspect is an information processing system including an information processing device that stores material data of materials used in a remote conference and a terminal device of a viewer that views the materials projected in the remote conference, wherein the information processing device includes a first processor, and when the communication quality of the terminal device used by either the projector who projects the materials or the viewer is unstable, the first processor permits the viewer's terminal device to acquire the material data, and the terminal device permitted to acquire the material data of the materials includes a second processor, and the second processor acquires the material data from the information processing device.

The information processing program according to the seventeenth aspect causes a computer to execute the following: when the communication quality of a terminal device used by either a projector who projects a document in a remote conference or a viewer who views the projected document is unstable, the terminal device of the viewer is permitted to acquire pre-stored document data for the document.

The information processing program according to the eighteenth aspect causes a computer to acquire material data for a remote conference from an information processing device that stores the material data when the communication quality of an external device used by either a projector who projects the material or a viewer who views the projected material is unstable.

The information processing program according to the 19th aspect causes a computer to transmit meta information including the page number of the page being projected of a remote conference document when the communication quality of an external device used by either the projector projecting the document or the viewer viewing the projected document is unstable.

According to the first, sixteenth, and seventeenth aspects, use by viewers can be restricted.

According to the second aspect, the source of material data can be limited to viewers with unstable communication quality.

According to the third aspect, the sources from which material data can be obtained can be limited to viewers who are more likely than other viewers to have unstable communication quality.

According to the fourth aspect, each viewer can be permitted to acquire the content before being affected by unstable communication quality from the projector.

According to the fifth aspect, the page of the projected material can be associated with the material data.

According to the sixth aspect, viewers can obtain meta information at their convenience.

According to the seventh aspect, the period for which the viewer retains the material data can be limited.

According to the eighth and eighteenth aspects, use by viewers can be restricted.

According to the ninth aspect, there is no need to switch between the display of the projected material and the acquired material data.

According to the tenth aspect, the display mode of the projected material can be reflected in the display mode of the material data.

According to the eleventh aspect, it is possible to display document data of the same page as the projected document.

According to the twelfth aspect, document data for a page different from the page of the projected document can be viewed without being affected by the display mode of the projected document.

According to the thirteenth aspect, the viewer can confirm the range of the material that the projector has enlarged or reduced by looking at the display format of the material data.

According to the fourteenth aspect, the viewer can confirm the position of the material indicated by the projector with the pointer by looking at the display format of the material data.

According to the fifteenth and nineteenth aspects, the display mode of the projected material can be reflected in the display mode of the material data.

FIG. 1 is a schematic configuration diagram of an information processing system. 1 is a block diagram showing a hardware configuration of an information processing device according to an embodiment of the present invention; FIG. 2 is a block diagram showing the hardware configuration of a terminal device according to the present embodiment. 10 is a flowchart showing the flow of distribution processing in the information processing device according to the present embodiment. 10 is a flowchart showing the flow of a browsing process on a terminal device of a viewer according to the present embodiment. 10 is an example showing a display area of a terminal device of a viewer according to the present embodiment. 10 is a flowchart showing the flow of a projection process of the terminal device of the projector according to the present embodiment. 10 is a flowchart showing the flow of distribution processing of an information processing device according to a modified example.

An example of an embodiment of the technology disclosed herein will be described below with reference to the drawings. Note that the same reference numerals are used to designate identical or equivalent components and parts throughout the drawings. Also, the dimensional proportions in the drawings have been exaggerated for the sake of explanation and may differ from the actual proportions.

Figure 1 is a schematic configuration diagram of an information processing system 1 disclosed herein. The information processing system 1 includes an information processing device 10, a terminal device 20, and a remote conference server 90.

The remote conference server 90 is a server that provides remote conferences using materials. In a remote conference, the user who projects the materials is referred to as the projector U1, and the user who views the projected materials is referred to as the viewer U2. Here, remote conferences include web conferences, video conferences, and telephone conferences.

The information processing device 10 is a server that stores material data for materials. The information processing device 10 allows the terminal device 20 to acquire the material data and distributes the material data. Here, the web conference may be a cloud service provided by a cloud service provider. In other words, the remote conference server 90 may be a server managed by a cloud service provider.

The terminal device 20 is a personal computer, smartphone, tablet device, or the like used by the projector U1 or viewer U2 participating in the remote conference. The projector U1 and viewer U2 participate in the remote conference via the terminal device 20. In this embodiment, the reference number 20 is used to represent any terminal device, and the reference numbers 20A and 20B may be used, respectively, to represent the terminal device used by the projector U1 and the terminal device used by the viewer U2.

Figure 2 is a block diagram showing the hardware configuration of information processing device 10. Information processing device 10 has a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, storage 14, an input unit 15, a display unit 16, and a communication interface (communication I/F) 17. Each component is connected to each other via a bus 19 so that they can communicate with each other.

The CPU 11 is a central processing unit that executes various programs and controls each component. That is, the CPU 11 reads programs from the ROM 12 or storage 14 and executes the programs using the RAM 13 as a work area. The CPU 11 controls the above components and performs various calculation processes in accordance with the programs recorded in the ROM 12 or storage 14. In this embodiment, the ROM 12 or storage 14 stores an information processing program for distributing material data.

ROM 12 stores various programs and data. RAM 13 serves as a working area for temporarily storing programs or data. Storage 14 is composed of an HDD (Hard Disk Drive) or SSD (Solid State Drive) and stores various programs, including the operating system, and various data.

The input unit 15 includes a pointing device such as a mouse and a keyboard, and is used to perform various inputs.

The display unit 16 is, for example, a liquid crystal display, and displays various information. The display unit 16 may also function as the input unit 15 by adopting a touch panel system.

The communication interface 17 is an interface for communicating with other devices such as databases, and uses standards such as Ethernet (registered trademark), FDDI, and Wi-Fi (registered trademark).

Figure 3 is a block diagram showing the hardware configuration of the terminal device 20. The terminal device 20 has a CPU 21, ROM 22, RAM 23, storage 24, input unit 25, display unit 26, and communication interface (communication I/F) 27. Each component is connected to each other via a bus 29 so that they can communicate with each other.

The CPU 21 is a central processing unit that executes various programs and controls each component. That is, the CPU 21 reads programs from the ROM 22 or storage 24 and executes the programs using the RAM 23 as a work area. The CPU 21 controls the above components and performs various calculation processes in accordance with the programs recorded in the ROM 22 or storage 24. In this embodiment, the ROM 22 or storage 24 stores an information processing program for viewing document data and an information processing program for projecting document data.

ROM 22 stores various programs and data. RAM 23 temporarily stores programs or data as a working area. Storage 24 is composed of a HDD and stores various programs, including the operating system, and various data.

The input unit 25 includes a pointing device such as a mouse and a keyboard, and is used to perform various input operations. The input unit 25 also includes a microphone for picking up the user's voice and a camera for capturing images of the user.

The display unit 26 is, for example, a liquid crystal display, and displays various information. The display unit 26 may also be a touch panel type and function as the input unit 25.

The communication interface 27 is an interface for communicating with other devices such as databases, and uses standards such as Ethernet (registered trademark), FDDI, and Wi-Fi (registered trademark).

Next, the operation of the information processing device 10 will be described.
4 is a flowchart showing the flow of distribution processing by the information processing device 10. The distribution processing is performed by the CPU 11 reading out a distribution program from the ROM 12 or the storage 14, expanding it into the RAM 13, and executing it.

In step S101, the CPU 11 receives the material data. That is, the CPU 11 receives the material data transmitted by the terminal device 20A of the projector U1 in step S251, which will be described later. The CPU 11 proceeds to step S102.

In step S102, the CPU 11 stores the document data in the ROM 12 or storage 14. The CPU 11 proceeds to step S103.

In step S103, the CPU 11 detects the start of a remote conference. For example, the CPU 11 may receive the execution result of the processing of step S201 or step S252 (described below) from each terminal device 20. Alternatively, for example, the CPU 11 may receive a notification of the start of a remote conference from the remote conference server 90. The CPU 11 proceeds to step S104.

In step S104, the CPU 11 detects a terminal device 20 whose communication quality is unstable. Communication quality is unstable, for example, when the communication speed is lower than a predetermined value, when a communication disconnection occurs, or when the delay time until projection is longer than a predetermined value. The CPU 11 may receive the communication status of each terminal device 20 and determine whether the communication quality is unstable. That is, the CPU 11 receives the communication status transmitted by the terminal device 20 in step S202 or step S253, described below. The CPU 11 may also receive an evaluation of communication quality from the remote conference server 90 and determine whether the communication quality is unstable. For example, if the communication quality is "low," the CPU 11 determines that the communication quality is unstable. The CPU 11 proceeds to step S105.

In step S105, the CPU 11 notifies the terminal device 20A of the projector U1 of the communication status. That is, the CPU 11 notifies the terminal device 20A of the projector U1 whether or not there is a terminal device 20 with unstable communication quality. The CPU 11 proceeds to step S106.

In step S106, the CPU 11 determines whether the communication quality of the terminal device 20B of the viewer U2 is unstable. If it is determined that the communication quality of the terminal device 20B of the viewer U2 is unstable (step S106: YES), the CPU 11 proceeds to step S107. If it is determined that the communication quality of devices other than the terminal device 20B of the viewer U2 is unstable (step S106: NO), the CPU 11 proceeds to step S108. If the communication quality of devices other than the terminal device 20B of the viewer U2 is unstable, this may be the case when the communication quality of the terminal device 20A of the projector U1 or the remote conference server 90, for example, is unstable.

In step S107, the CPU 11 permits the viewer U2 to acquire the material data. In other words, the CPU 11 permits only the terminal device 20B, whose communication quality is unstable, to acquire the material data. The CPU 11 proceeds to step S109.

In step S108, the CPU 11 permits each viewer U2 to acquire the material data. That is, the CPU 11 permits the terminal devices 20B of all viewers U2 to acquire the material data. The CPU 11 proceeds to step S109.

In step S109, the CPU 11 distributes the material data to the terminal device 20B that has been permitted to acquire it. For example, the CPU 11 notifies the terminal device 20B that it has permitted acquisition. The CPU 11 then transmits the material data to the terminal device 20B that has issued the transmission request. Alternatively, the CPU 11 may uniformly transmit the material data to all terminal devices 20B that have been permitted to acquire it. The CPU 11 proceeds to step S110.

In step S110, the CPU 11 determines whether meta information has been received. That is, the CPU 11 receives the meta information transmitted by the terminal device 20A of the projector U1 in step S257, which will be described later. The meta information is information related to the display mode of the material. The display mode is, for example, the projected page, the projected range, or the position of the projected pointer. The meta information is, for example, the page number of the projected page, range information such as coordinates indicating the projected range, or position information of the projected pointer position.
If it is determined that meta-information has been received (step S110: YES), the CPU 11 proceeds to step S111. If it is determined that meta-information has not been received (step S110: NO), the CPU 11 proceeds to step S112.

In step S111, the CPU 11 sends meta information to the terminal device 20B that has been granted permission to acquire the information. The CPU 11 then proceeds to step S112.

In step S112, CPU 11 determines whether a request to send meta information has been received. That is, CPU 11 determines whether a request to send meta information sent by terminal device 20B of viewer U2 in step S215, described below, has been received. If it is determined that a request to send meta information has been received (step S112: YES), CPU 11 proceeds to step S113. If it is determined that a request to send meta information has not been received (step S112: NO), CPU 11 proceeds to step S114.

In step S113, the CPU 11 transmits the meta information to the terminal device 20B that requested the transmission. The CPU 11 then proceeds to step S114.

In step S114, the CPU 11 determines whether the remote conference has ended. If it determines that the remote conference has ended (step S114: YES), the CPU 11 proceeds to step S115. If it determines that the remote conference has not ended (step S114: NO), the CPU 11 proceeds to step S104.

In step S115, the CPU 11 instructs the terminal device 20B to delete the acquired material data. The CPU 11 then ends the distribution process.

By processing steps S102 to S104, the CPU 11 stores the reference material data in advance before a terminal device 20 with unstable communication quality occurs.

Furthermore, by processing steps S104, S107, and S108, if the communication quality of the terminal device 20 used by either the projector U1 or the viewer U2 is unstable, the CPU 11 permits the terminal device 20B of the viewer U2 to acquire the material data of the pre-stored materials.

Furthermore, by processing steps S107, S108, and S115, the CPU 11 permits the acquisition of the material data so that the material data can be temporarily stored in the terminal device 20B of viewer U2 until the end of the remote conference.

Furthermore, by processing steps S110 and S111, the CPU 11 transmits meta information to the terminal device 20B of the viewer U2 each time it receives meta information. Furthermore, by processing steps S112 and S113, the CPU 11 transmits meta information to the terminal device 20B of the viewer U2 each time it receives a request to transmit meta information from the terminal device 20B of the viewer U2.

Next, the operation of the terminal device 20 will be described.
5 is a flowchart showing the flow of the browsing process by the terminal device 20 B. The browsing process is performed by the CPU 21 reading out a browsing program from the ROM 22 or the storage 24, loading it into the RAM 23, and executing it.

In step S201, the CPU 21 enters the remote conference. The CPU 21 proceeds to step S202.

In step S202, the CPU 21 notifies the communication status. For example, the CPU 21 notifies the communication speed of the communication interface 27. The CPU 21 may also transmit information indicating whether the communication quality is stable based on the communication speed or delay time. The CPU 21 proceeds to step S203. Note that step S202 is processing corresponding to step S104 described above.

In step S203, the CPU 21 determines whether acquisition of document data is permitted. If it is determined that acquisition of document data is permitted (step S203: YES), the CPU 21 proceeds to step S204. If it is determined that acquisition of document data is not permitted (step S203: NO), the CPU 21 proceeds to step S206. Note that the processing in step S203 corresponds to the processing in step S107 or step S108 described above.

In step S204, the CPU 21 acquires the document data. Note that the CPU 21 may also acquire the document data by accepting an acquisition operation by the viewer U2. The CPU 21 proceeds to step S205.

In step S205, the CPU 21 displays the acquired material data in the display area 261. The CPU 21 proceeds to step S208.
6 shows an example of the display area 261 on the display unit 26 of the terminal device 20. The CPU 21 displays the display area 261 on the display unit 26. The CPU 21 then displays the acquired document data in the display area 261.

In step S206, the CPU 21 displays the projected material in the display area 261. The CPU 21 proceeds to step S202.

In step S207, the CPU 21 accepts an operation by the viewer U2 to cancel the linking. Linking means reflecting processing according to the meta information of the projected material in the received material data. Specific linking processing will be described later in steps S210 to S214. The CPU 21 proceeds to step S208.

In step S208, the CPU 21 determines whether or not a page transition operation has been performed by the viewer U2. If it is determined that a page transition operation has been performed by the viewer U2 (step S208: YES), the CPU 21 proceeds to step S209. If it is determined that a page transition operation has not been performed by the viewer U2 (step S208: NO), the CPU 21 proceeds to step S210.

In step S209, the CPU 21 displays the post-transition page in the display area 261. That is, the CPU 21 changes the page displayed in the display area 261 to another page in response to the operation of the viewer U2. Note that when the CPU 21 displays the post-transition page in the display area 261, it may cancel the link. The CPU 21 proceeds to step S210.

In step S210, the CPU 21 determines whether meta-information has been received. If it is determined that meta-information has been received (step S210: YES), the CPU 21 proceeds to step S211. If it is determined that meta-information has not been received (step S210: NO), the CPU 21 proceeds to step S215. Note that step S210 is processing corresponding to step S111 described above.

In step S211, the CPU 21 determines whether the interlocking has been released. If it determines that the interlocking has not been released (step S211: NO), the CPU 21 proceeds to step S212. If it determines that the interlocking has been released (step S211: YES), the CPU 21 proceeds to step S215.

In step S212, the CPU 21 displays the page of the page number indicated by the meta information in the display area 261 based on the meta information. That is, the CPU 21 displays the same page of the material data as the page of the material being projected by the projector U1 based on the meta information. In other words, the CPU 21 links the projected material and the material data. The CPU 21 proceeds to step S213.

In step S213, the CPU 21 displays the range in the display area 261. That is, based on the range information included in the meta information, the CPU 21 displays the range of the material data that is the same as the range of the material being projected by the projector U1, superimposed on the material data. The CPU 21 proceeds to step S214.
Here, the CPU 21 may display the range 262 in a display mode in which the range of the material being projected by the projector U1 is surrounded by a dotted line, as shown in Fig. 6. When the range projected by the projector U1 is enlarged or reduced, the CPU 21 changes the size of the range 262.

In step S214, the CPU 21 displays a pointer in the display area 261. That is, based on the position information included in the meta information, the CPU 21 displays the pointer superimposed on the document data at the pointer position indicated by the position information. For example, the CPU 21 displays the pointer 263 in the same position as the pointer indicated on the document projected by the projector U1, in a display format such as that shown in FIG. 6. The CPU 21 proceeds to step S215.

In step S215, the CPU 21 transmits a request to transmit meta information. The CPU 21 transmits the request to transmit in response to, for example, an operation by the viewer U2. The CPU 21 may also transmit the request to transmit when a linking operation is received through the processing of step S207 described above. The CPU 21 proceeds to step S216. Note that step S215 is processing corresponding to step S112 described above.

In step S216, the CPU 21 determines whether the user has left the remote conference. If it is determined that the user has left the remote conference (step S216: YES), the CPU 21 proceeds to step S217. If it is determined that the user has not left the remote conference (step S216: NO), the CPU 21 proceeds to step S202.

In step S217, the CPU 21 deletes the acquired material data. The CPU 21 may store the material data in a buffer area, which is a temporary storage area, so that the material data is deleted when the remote conference ends. The CPU 21 then ends the viewing process.

By performing the above steps S205 and S206, the CPU 21 displays the acquired material data in place of the projected material in the display area 261 that displays the projected material.

Furthermore, by processing steps S207 to S214, if the page displayed in the display area 261 is changed to another page in response to the operation of viewer U2, when meta information is received, the CPU 21 does not display the page with the received page number in the display area 261.

Furthermore, by processing steps S210 to S214, the CPU 21 receives meta information of the projected material and displays the material data that reflects processing according to the meta information in the display area 261. In other words, the CPU 21 links the projected material and the received material data based on the meta information.

Figure 7 is a flowchart showing the flow of the projection process by terminal device 20A. The projection process is performed by CPU 21 reading the projection program from ROM 22 or storage 24, expanding it into RAM 23, and executing it.

In step S251, the CPU 21 transmits the document data. The CPU 21 then proceeds to step S252. Note that step S251 is processing corresponding to step S101 described above.

In step S252, the CPU 21 enters the remote conference. The CPU 21 proceeds to step S253.

In step S253, the CPU 21 notifies the communication status. For example, the CPU 21 notifies the communication speed of the communication interface 27. The CPU 21 may also transmit information indicating whether the communication quality is stable based on the communication speed or delay time, etc. The CPU 21 proceeds to step S254. Note that step S253 is processing corresponding to step S104 described above.

In step S254, the CPU 21 detects the communication status of the terminal device 20B of the viewer U2. This communication status is notified by the information processing device 10 in step S105 of FIG. 4. The CPU 21 proceeds to step S255.

In step S255, the CPU 21 determines whether there is a terminal device 20 with unstable communication quality. That is, the CPU 21 determines whether there is a terminal device 20 with unstable communication quality among the terminal device 20A of the projector U1 (the projector's own device) and the terminal device 20B of the viewer U2. If it is determined that there is a terminal device 20 with unstable communication quality (step S255: YES), the CPU 21 proceeds to step S256. If it is determined that there is no terminal device 20 with unstable communication quality (step S255: NO), the CPU 21 proceeds to step S253.

In step S256, the CPU 21 determines whether the display mode of the material has been changed. The display mode of the material may have been changed, for example, when the page of the projected material has been changed, when the projected range has been changed, or when the position of the projected pointer has been changed. If it is determined that the display mode of the projected material has been changed (step S256: YES), the CPU 21 proceeds to step S257. If it is determined that the display mode of the material has not been changed (step S256: NO), the CPU 21 proceeds to step S253.

In step S257, the CPU 21 transmits the meta information. The CPU 21 proceeds to step S258. Step S257 is processing corresponding to step S110 described above.

In step S258, the CPU 21 determines whether the user has left the remote conference. If it determines that the user has left the remote conference (step S258: YES), the CPU 21 ends the projection process. If it determines that the user has not left the remote conference (step S258: NO), the CPU 21 proceeds to step S253.

As described above, by the processing of steps S255 to S257, the CPU 21 transmits meta information if the communication quality of the terminal device 20, which is an external device used by either the projector U1 or the viewer U2, is unstable.

[Modification]
The information processing device 10 and the terminal device 20 according to the present embodiment have been described above. However, the present disclosure is not limited to the above embodiment. Various improvements and modifications are possible.

The information processing device 10 may be integrated with a remote conference server 90. In other words, the information processing device 10 may be a server that provides remote conferences using materials.

The information processing device 10 may impose access control on the material data. For example, in step S102 of FIG. 4, the CPU 11 imposes access control on the received material data. Access control may include, for example, restricting use by password protection, allowing use with a specific account, allowing use with a specific application, prohibiting editing, or allowing use within a predetermined period of time.

In step S107 of FIG. 4, the CPU 11 may permit the terminal device 20B of the viewer U2, whose communication quality is unstable, to acquire the material data, even though the terminal device 20B belongs to the same network as the terminal device 20B of the viewer U2. Examples of the terminal device 20B belonging to the same network include those with IP (Internet Protocol) addresses that belong to the same subnet or those that are located at the same base.

When the terminal device 20B of the viewer U2 receives a linking operation, it may display the page of the document data corresponding to the page number included in the received meta information in the display area 261. That is, in step S207 of FIG. 5, when the CPU 21 receives a linking operation, it displays the page of the document data corresponding to the page number included in the meta information in the display area 261 based on the meta information received in step S210.

The terminal device 20B may grant the authority to display in the display area 261 to either the projector U1 or the viewer U2. Fig. 8 is a flowchart showing the flow of a viewing process according to a modified example by the terminal device 20B. Compared to the flowchart in Fig. 5, the flowchart in Fig. 8 changes the processes of steps S208 and S209, "confirmation of page transition operation by the viewer" and "display of the page after transition," to the process following the branch process of YES in step S211.
8, the CPU 21 determines whether or not the interlocking has been released. If it is determined that the interlocking has not been released (step S211: NO), the CPU 21 proceeds to step S212. If it is determined that the interlocking has been released (step S211: YES), the CPU 21 proceeds to step S300.
If the viewer U2 performs a page transition operation (step S300: YES), the CPU 21 proceeds to step S301. In step S301, the CPU 21 displays the page after transition in the display area 261.
As described above, when linked with page transitions by the projector U1, the CPU 21 links the material projected by the projector U1 with the material data by displaying the material data in the display area 261, reflecting processing according to the meta information. When the linkage is released, the CPU 21 changes the page displayed in the display area 261 to another page in response to the operation of the viewer U2, and does not link the material projected by the projector U1 with the material data. In the flowchart shown in FIG. 5 , even when linked with page transitions by the projector U1, the CPU 21 allowed the viewer U2 to perform page transitions independently of the linkage. On the other hand, in the flowchart of FIG. 8 , the viewer U2 cannot freely perform page transitions unless the linkage with page transitions by the projector U1 is released. As such, in the form shown in FIG. 8 , the CPU 21 grants the authority to display in the display area 261 to either the projector U1 or the viewer U2.

If the communication quality of the terminal device 20A of the projector U1 is unstable, the terminal device 20A may not project the material, but may instead transmit the meta information in step S257 described above. Furthermore, if the terminal devices 20B of all viewers U2 are permitted to acquire material data, the terminal device 20A of the projector U1 may not project the material, but may instead transmit the meta information in step S257 described above. This reduces the amount of communication required for projecting the material.

The terminal device 20A of the projector U1 may detect the terminal device 20B of the viewer U2, whose communication quality is unstable, without going through the information processing device 10, and may permit the acquisition of the document data and distribute it. The information processing device 10 and the terminal device 20A may be incorporated into the same device.

The above processing can also be implemented using dedicated hardware circuits. In this case, it may be executed by a single piece of hardware, or by multiple pieces of hardware.

In the above embodiment, the term "processor" refers to a processor in a broad sense, including general-purpose processors (e.g., CPU: Central Processing Unit, etc.) and dedicated processors (e.g., GPU: Graphics Processing Unit, ASIC: Application Specific Integrated Circuit, FPGA: Field Programmable Gate Array, programmable logic device, etc.).

Furthermore, the processor operations in the above embodiment may not only be performed by a single processor, but may also be performed by multiple processors located in physically separate locations working together. Furthermore, the order of the processor operations is not limited to the order described in the above embodiment, and may be changed as appropriate.

The program that operates the information processing device 10 or the terminal device 20 may be provided by a computer-readable recording medium such as a USB (Universal Serial Bus) memory, a flexible disk, or a CD-ROM (Compact Disc Read Only Memory), or it may be provided online via a network such as the Internet. In this case, the program recorded on the computer-readable recording medium is typically transferred and stored in memory or storage. This program may also be provided, for example, as standalone application software, or may be incorporated into the software of the information processing device 10 or the terminal device 20 as a function of that device.

1 Information processing system 10 Information processing device 20 Terminal device 90 Remote conference server 261 Display area 262 Range 263 Pointer

Claims (9)

a processor;
The processor:
An information processing device that determines the communication quality of a terminal device used by either a projector who projects a document in a remote conference or a viewer who views the projected document, and if the communication quality is unstable, allows the viewer's terminal device to obtain pre-stored document data for the document. The processor:
The information processing apparatus according to claim 1 , wherein, when the communication quality of any one of the plurality of terminal devices of the viewers is unstable, the terminal device of the viewer having the unstable communication quality is permitted to acquire the material data. The processor:
The information processing apparatus according to claim 2 , wherein the information processing apparatus permits a terminal device of a viewer belonging to the same network as the terminal device of the viewer whose communication quality is unstable to acquire the material data. The processor:
The information processing apparatus according to claim 1 , wherein when the communication quality of the terminal device of the projector is unstable, acquisition of the material data is permitted for each of the terminal devices of the viewers. The processor:
receiving meta information relating to a display mode of the material, including a page number of the page on which the material is projected, from the terminal device of the projector;
The information processing apparatus according to claim 1 , wherein the information processing apparatus transmits the meta information to the terminal device of the viewer every time the meta information is received from the terminal device of the projector. The processor:
The information processing apparatus according to claim 5 , wherein the information processing apparatus transmits the meta-information to the terminal device of the viewer every time a request for transmission of the meta-information is received from the terminal device of the viewer. The processor:
The information processing apparatus according to claim 1 , wherein acquisition of the material data is permitted so that the material data is temporarily stored in the terminal device of the viewer until the end of the remote conference. An information processing system including an information processing device that stores material data of materials used in a remote conference and a terminal device of a viewer who views the materials projected in the remote conference,
The information processing device includes:
a first processor;
The first processor
determining communication quality of a terminal device used by either the projector who projects the material or the viewer, and if the communication quality is unstable, permitting the terminal device of the viewer to acquire the material data;
The terminal device that is permitted to acquire the material data of the material,
a second processor;
The second processor
An information processing system that acquires the material data from the information processing device. An information processing program for causing a computer to execute a process of determining the communication quality of a terminal device used by either a projector who projects a document in a remote conference or a viewer who views the projected document, and if the communication quality is unstable, allowing the viewer's terminal device to obtain pre-stored document data for the document.