JP2012247996A - Document information management apparatus, information processing apparatus, and document information management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an operation load and process addition in switching of information with respect to a system which switches and displays information that a plurality of participants prepare respectively.SOLUTION: There is provided a terminal 1a for chairperson which manages materials to be displayed by a projector 1b, the terminal for chairperson being characterized in acquiring information generated by dividing a part of a material that a terminal 2 for participant that a participant of a conference operates holds to display it by the projector 1b from the terminal 2 for participant and storing and managing the information in a RAM 20; acquiring the remaining part of a division of a material specified for display by the projector 1b from the corresponding terminal 2 for participant; and combining it with the part of the material stored in the RAM 20 for display by the projector 1b.

Description

  The present invention relates to a document information processing apparatus, an information processing apparatus, and a document information processing system, and more particularly to processing of information on materials shared by conference participants.

  In a meeting where multiple participants display the contents of their own materials on the shared screen and share each other and reach a conclusion while discussing, the materials displayed on the shared screen during the discussion process It is preferable that the operation for switching the material of the other participant to the material of the other participant, the operation of replacing the material of a certain participant with the other material, etc. are performed smoothly without disturbing the progress of the conference.

  As a system that enables a conference in such a mode, a shared screen device such as a large display or a projector that can be viewed by all participants of a conference is connected to a moderator terminal (hereinafter referred to as a moderator terminal). The information of the material transmitted from each participant's terminal (hereinafter referred to as the participant terminal) is stored in a storage medium provided in the moderator's terminal. And there is a method of switching the material to be displayed by reading the information of the material to be displayed out of the information of the material stored in the storage medium into the main memory and displaying it by the application program installed in the moderator terminal. Yes (hereinafter referred to as the first method).

  As another method, each participant's terminal is connected to a shared screen device compatible with network communication such as a projector having a network communication function, and information on materials to be displayed on the shared screen device is switched over the network. There is a method (hereinafter referred to as a second method).

  On the other hand, as a technique for shortening the waiting time when displaying information, the stream data at the beginning of the stream data is delivered to the stream player as an e-mail together with the request destination address information of the subsequent stream data, The playback device starts playback of the fragment stream data in the received e-mail, requests the stream data transmission unit corresponding to the request destination address to distribute the subsequent stream data, and subsequently plays back the received subsequent stream data. Thus, a technique has been proposed in which the time required to start playback of content used for applications such as advertisements and flyers is shortened so that more viewers can view the content (for example, see Patent Document 1).

  Further, only thumbnail images included in the main image file stored in the digital camera are transferred to the image data processing device, and the transferred thumbnail image is transferred to the main image stored in the digital camera. It is possible to increase the speed of communication between the digital camera and the image data processing device by managing desired one-to-one correspondence and confirming with thumbnail images and then transferring desired main image data. In addition, a technique for realizing reduction of the area for storing image data is already known (see, for example, Patent Document 2).

  For example, in the first method described above, when a participant wants to replace his / her material sent to the moderator terminal during the meeting, the participant sends the replaced material to the moderator terminal, It is necessary for the person to remove the information of the material before replacement from the main memory and to read the information of the material after replacement into the main memory. For this reason, it takes time until the replaced material is displayed, and there arises a problem that the discussion is interrupted and the conference efficiency is lowered.

  In the second method described above, when the display on the shared screen is switched from the information of one participant's material to the information of another participant's material, the participant terminal that currently provides the material information Disconnect the connection with the shared screen device, connect the participant terminal that provides the information of the switched material and the shared screen device, and then transfer the material from the participant terminal connected to the shared screen device to the shared screen device. Requires processing to send and display information. Therefore, similar to the above, it takes time to display the materials after switching, and there is a problem that the discussion is interrupted and consequently the conference efficiency is lowered.

  The technique disclosed in Patent Document 1 is common to the present invention in that it proposes a waiting time when switching information to be displayed when different information is continuously displayed. However, in Patent Document 1, the information is only displayed in a predetermined order, which is different from the present case in which a desired document needs to be displayed according to the operation of the participant according to the progress of the conference. To.

  In addition, the technique disclosed in Patent Document 2 transmits a part of information of each image to the receiving side first for all images on the transmitting side, and when a certain image is designated, all information on the image is transmitted on the receiving side. There are similarities in terms of ensuring alignment. However, when displaying all the images, it is necessary to read all the images, and the time required for this is not reduced.

  The present invention has been made to solve such a problem, and in a system for switching and displaying information prepared by each of a plurality of participants, it is possible to reduce an operation burden and additional processing in switching information. Objective.

  In order to solve the above problems, an aspect of the present invention is a document information management apparatus that manages document information displayed on a shared screen shared by a plurality of users, and each of the user terminals operated by each of the plurality of users. A document information division management unit that acquires information obtained by dividing a part of each document information held for display on the shared screen from each of the plurality of user terminals, stores the information in a storage medium, and manages the information The document information designated for display on the shared screen is acquired from the corresponding user terminal, and the document information is generated by integrating with a part of the stored document information. And a document information output unit that outputs the generated document information to be displayed on the shared screen.

  Information obtained by dividing a part of document information held by the plurality of user terminals to be displayed on a user terminal operated by each of the plurality of users and a shared screen shared by the plurality of users. Information as a user terminal included in a document information management system that includes a display device that acquires and stores the remaining portion of selected document information from each user terminal and displays the selected document information on the shared screen. A processing apparatus, wherein the division ratio is determined based on a storage capacity allocated to store information obtained by dividing a part of the document information and a data size of each document information, and the determined division ratio A document information dividing unit that divides a part of the document information that is held, and a part of the divided document information is transmitted to the display device, and the display device According definitive selection, characterized in that it comprises a document information transmission unit for transmitting the remaining portion of the divided on the display device.

  A document information management system including a document information management device that manages document information displayed on a shared screen shared by a plurality of users, and a user terminal operated by each of the plurality of users, wherein the document information management device includes the plurality of document information management devices. Information obtained by dividing a part of each piece of document information held by the user terminal for display on the shared screen from each of the plurality of user terminals and storing it in a storage medium for management The division management unit and the remaining information divided from the document information designated to be displayed on the shared screen are acquired from the corresponding user terminal, and integrated with a part of the stored document information. A document information generation unit that generates document information; and a document information output unit that outputs the generated document information to be displayed on the shared screen. A document information dividing unit that divides the held document information based on a rate, and a part of the divided document information is transmitted to the document information management device, and the division is performed according to the selection in the document information management device. And a document information transmission unit that transmits the remaining portion to the document information management apparatus.

  ADVANTAGE OF THE INVENTION According to this invention, in the system which switches and displays the information which each several participant prepared, the operation burden and process addition in information switching can be reduced.

It is a figure which shows the operation | use form of the information management system which concerns on embodiment of this invention. It is a figure which shows the operation | use form of the information management system which concerns on other embodiment of this invention. It is a block diagram which shows typically the hardware constitutions of the information processing terminal which concerns on embodiment of this invention. It is a figure which shows typically the information stored in each apparatus which comprises the system which concerns on embodiment of this invention. It is a figure which shows the function structure of the terminal for moderators concerning embodiment of this invention. It is a figure which shows the area | region ensured on memory in the terminal for moderators concerning embodiment of this invention. It is a figure which shows the function structure of the terminal for participants concerning embodiment of this invention. It is a figure which shows the conference progress condition which concerns on embodiment of this invention. It is a figure which shows the example of the keyword extracted in the shared document information which concerns on embodiment of this invention. It is a figure which shows the example of the keyword which is common between the shared document information which concerns on embodiment of this invention. It is a figure which shows the association degree between the shared documents which concerns on embodiment of this invention. It is a figure which shows the memory state of the apparatus contained in the system which concerns on embodiment of this invention. It is a figure which shows the memory state of the apparatus contained in the system which concerns on embodiment of this invention. It is a figure which shows the memory state of the apparatus contained in the system which concerns on embodiment of this invention. It is a figure which shows the memory state of the apparatus contained in the system which concerns on embodiment of this invention. It is a sequence diagram which shows operation | movement of the system which concerns on embodiment of this invention. It is a sequence diagram which shows operation | movement of the system which concerns on embodiment of this invention. It is a sequence diagram which shows operation | movement of the system which concerns on embodiment of this invention. It is a sequence diagram which shows operation | movement of the system which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this embodiment, as an example of a document management system, a system that manages document information to be displayed on a shared screen device such as a large display or a projector during a meeting will be described. FIG. 1 is a diagram showing an operation mode of the document management system according to the present embodiment.

  As shown in FIG. 1, the document management system according to the present embodiment is connected to a moderator terminal 1a and a moderator terminal 1a, which are information processing terminals operated by a conference moderator. Including a projector 1b for displaying a visually recognizable image and participant terminals 2a, 2b, 2c, and 2d (hereinafter collectively referred to as a participant terminal 2), which are information processing terminals operated by each participant of the conference. , They are operated in the network A to which they are connected.

  The network A is a network that connects the moderator terminal 1a and the participant terminal 2 to each other, and is realized by, for example, a local area network. The moderator terminal 1a and the participant terminal 2 are realized by a general information processing apparatus such as a PC (Personal Computer).

  In addition, the moderator's terminal 1a is configured so as to efficiently switch and display the document information (hereinafter referred to as shared document information) prepared for the meeting in each participant's terminal 2. It has a function of acquiring the head portion where the shared document information is divided from the user terminal 2 and storing it in the main memory. Then, the moderator terminal 1a determines a division rate when the head part is divided and acquired from the shared document information, that is, a ratio of information collected by the moderator terminal 1a as the head part of the shared document information. It has a function. This function is the gist of the present embodiment. In the mode of FIG. 1, the moderator terminal 1a functions as a document information management apparatus, and the participant terminal 2 functions as a user terminal.

  FIG. 2 is a diagram illustrating a system operation mode in another aspect according to the present embodiment. In the form of FIG. 1, the moderator terminal 1 a determines the division rate. However, in the form of FIG. 2, each participant terminal 2 determines the division rate. In the mode of FIG. 2, the moderator terminal 1 is not provided, and the projector 1 including a network communication function is directly connected to the network A. Even if the projector 1 is a model that supports network communication, the projector 1 generally does not include a calculation function such as a PC. Therefore, the present embodiment is applied by determining the division ratio on the participant terminal 2 side. . In the form of FIG. 2, the head portion into which the shared document information is divided is stored on the main memory of the projector 1. That is, in the form of FIG. 2, the projector 1 functions as a document information management apparatus.

  Next, with reference to FIG. 3, the hardware configuration of information processing apparatuses such as the moderator terminal 1a and the participant terminal 2 will be described. FIG. 3 is a block diagram showing a hardware configuration of the moderator terminal 1a and the participant terminal 2 according to the present embodiment. In the following description, the hardware configuration of the moderator terminal 1a will be described as an example, but the same applies to the participant terminal 2.

  As shown in FIG. 32, the moderator terminal 1a according to the present embodiment includes the same configuration as that of a general server, PC, or the like. That is, the moderator terminal 1a according to the present embodiment includes a CPU (Central Processing Unit) 10, a RAM (Random Access Memory) 20, a ROM (Read Only Memory) 30, an HDD (Hard Disk Drive) 40, and an I / F 50. They are connected via a bus 80. Further, an LCD (Liquid Crystal Display) 60 and an operation unit 70 are connected to the I / F 50.

  The CPU 10 is a calculation means and controls the operation of the moderator terminal 1a as a whole. The RAM 20 is a volatile storage medium capable of reading and writing information at high speed, and is used as a work area when the CPU 10 processes information. The ROM 30 is a read-only nonvolatile storage medium and stores a program such as firmware. The HDD 40 is a non-volatile storage medium that can read and write information, and stores an OS (Operating System), various control programs, application programs, and the like.

  The I / F 50 connects and controls the bus 80 and various hardware and networks. The LCD 60 is a visual user interface for the moderator to check the status of the moderator terminal 1a. The operation unit 70 is a user interface such as a keyboard and a mouse for the moderator to input information to the moderator terminal 1a. As described with reference to FIG. 1, a projector 1b is connected to the moderator terminal 1a as a shared screen device. This projector 1b is connected via I / F50.

  In such a hardware configuration, a program stored in a storage medium such as the ROM 30, the HDD 40, or an optical disk (not shown) is read into the RAM 20, and operates according to the control of the CPU 10, thereby configuring a software control unit. A functional block that realizes the functions of the moderator terminal 1a and the participant terminal 2 according to the present embodiment is configured by a combination of the software control unit configured as described above and hardware. Note that the projector 1 according to the embodiment of FIG. 2 is also equipped with hardware equivalent to a general-purpose information processing apparatus as shown in FIG. 3, and is at least a storage medium corresponding to the RAM 20 and is connected via a network. A main memory for storing the received document information is mounted.

  Next, with reference to FIG. 4A, the storage mode of document information in the RAM 20 of each of the moderator terminal 1a and the participant terminal 2 will be described. Assuming that the document information prepared in each participant terminal 2 is material 1, material 2, material 3, and material 4, each document information is material 1 which is the head part as shown in FIG. −1 and the material 1-2, which is the rear part, are stored in each RAM 20. The head portion of the divided document information is transmitted to the moderator terminal 1a and stored in the RAM 20 of the moderator terminal 1a.

  When the state shown in FIG. 4A is set as the initial state, for example, when the document 2 is displayed on the shared screen device, as shown in FIG. 4B, the moderator terminal 1a receives the document 2 from the participant terminal 2b. The material 2-2 that is the back part of the document 2 is acquired, and the information of the material 2 is generated by integrating with the already acquired material 2-1. Thereby, the moderator terminal 1a can display the document 2 on the projector 1b.

  Next, a functional configuration included in the moderator terminal 1a will be described with reference to FIG. As shown in FIG. 5, the moderator terminal 1a according to the present embodiment includes an operation unit A101, a conference progress management unit A102, a shared material management unit A103, and a shared material display unit A104. Each functional block shown in FIG. 5 is configured as a software control unit configured by the CPU 10 performing an operation according to a program loaded in the RAM 20 as described above.

  The operation unit A101 obtains a command for switching document information to be displayed on the shared screen device in response to the operation of the moderator on the moderator terminal 1a. The conference progress management unit 102 generates and manages conference progress information based on the document information switching command acquired by the operation unit A101. The conference progress information is information indicating document information before and after switching of document information to be displayed on the shared screen device. This will be described in detail later.

  In addition, the conference progress management unit A102 manages information about each participant terminal 2, such as the IP address of the participant terminal 2 participating in the conference, and document information transmitted from each participant terminal 2. Information related to shared document information, such as the data size and keywords included in the document. Further, the conference progress management unit A102 determines the division ratio of the document information divided at each participant terminal 2 as shown in FIG. To the service terminal 2. This is one of the main functions according to the present embodiment.

The shared material management unit A103 manages the storage area of the RAM 20 of the moderator terminal 1a for each use, and manages the head portion of the document information transmitted from the participant terminal 2. That is, the shared material management unit A functions as a document information division management unit. FIG. 6 is a diagram showing an area secured on the RAM 20 of the moderator terminal 1a. As shown in FIG. 6, on the RAM 20 of the moderator terminal 1a, a shared material management memory 20a (capacity V _doc ), a shared material display memory 20b (capacity V _disp ), a progress memory 20c (capacity V _meet). ) And the operation memory 20d (capacity V _ope ) are secured. Of the storage areas of the RAM 20 mounted on the moderator terminal 1a, the area secured by the shared material management unit A103, that is, the area used for switching and displaying the shared document information according to the present embodiment is V. .

  Among these areas shown in FIG. 6, the sizes of the shared material management memory 20a and the progress memory 20c vary depending on the progress of the conference. In other words, the shared material management unit A103 increases or decreases the sizes of the shared material management memory 20a and the progress memory 20c according to the progress of the conference.

  The shared material management memory 20a is a work area of the shared material management unit A, and stores the head portion of each document information transmitted from each participant terminal 2, as shown in FIG. To manage. As shown in FIG. 4B, the shared material display memory 20d stores the document information generated by acquiring and integrating the rear part from the participant terminal 2 for display on the shared screen device. This is an area for display on the shared screen device.

  The progress memory 20c is an area that becomes a work area of the conference progress management unit A102, and stores the above-described conference progress status information, information about the participant terminals, information about the shared document information, and the division ratio of the document information. to manage. The operation memory 20d is an area serving as a work area for the operation unit A101, and manages operation information on the moderator terminal 1a by the moderator.

  As shown in FIG. 4B, the shared material display unit 104 displays the head portion of the document information stored in the shared material management memory 20a and the rear portion of the document information acquired from the participant terminal 2. The document information is integrated and generated and managed, and the display on the shared screen device is controlled. That is, the shared material display unit 104 functions as a document information generation unit and a document information output unit.

  Next, a functional configuration included in the participant terminal 2 will be described with reference to FIG. As shown in FIG. 7, the participant terminal 2 includes an operation unit B201, a conference progress management unit B202, and a shared material management unit B203. The operation unit B201 selects shared document information provided by each participant terminal 2 in response to an operation performed on the participant terminal 2 by the participant.

  The conference progress management unit B202 manages information related to each participant's terminal 2 such as an IP address, and information related to the shared document information such as the data size of the shared document information and keywords included in the document information. To the terminal 1a. The conference progress management unit B202 analyzes the content of the shared document information selected by the operation unit B201, and extracts keywords included in the document information. For extracting keywords, various existing methods can be used. For example, keywords can be extracted using morphological analysis and dictionary information. Also, the conference progress management unit B202 acquires information on the division ratio of its own shared document information from the moderator terminal 1a, and stores it in the RAM 20 for management.

  As shown in FIG. 4A, the shared material management unit B 203 stores and manages the shared document information provided by itself on the RAM 20. Further, the shared material management unit B203 divides the shared document information provided by itself based on the division rate acquired and managed by the conference progress management unit B202 from the moderator terminal 1a. Then, the shared material management unit B203 transmits the head portion of the divided shared document information to the moderator terminal 1a.

  In the aspect of FIG. 2, the functions and roles of the projector 1 and the participant terminal 2 are different from the above-described aspects. Hereinafter, functions of the projector 1 and the participant terminal 2 in the form shown in the figure will be described with reference to FIGS. 5 and 7. 2, the respective areas shown in FIG. 6 are secured on the main memory of the projector 1.

  The projector 1 according to the aspect of FIG. 2 has a functional configuration as shown in FIG. 5, like the moderator terminal 1a. The operation unit A101 according to the mode of FIG. 2 acquires a document information switching command to be displayed on the shared screen device in accordance with the moderator's operation on the moderator terminal 1a, as in the mode of FIG.

  The conference progress management unit A102 according to the aspect of FIG. 2 manages information related to each participant terminal 2, such as the IP address of the participant terminal 2 participating in the conference. In addition, the conference progress management unit A101 generates and manages conference progress status information based on the document information switching command acquired by the operation unit A101, and also generates the generated conference progress status information for each participant terminal. 2 to send.

  2 manages the main memory of the projector 1 for each use as described with reference to FIG. 6, and at the same time the document information transmitted from the participant terminal 2. Manage. Furthermore, the shared material management unit A103 manages information related to the shared document information such as the data size of the document information transmitted from each participant terminal 2 and the keywords included in the document, and for all the participant terminals 2 Information on the collected shared documents is transmitted to all the participant terminals 2.

  As shown in FIG. 4B, the shared material display unit A104 according to the aspect of FIG. 2 includes a head portion of document information stored in the shared material management memory 20a and a document acquired from the participant terminal 2. Document information is generated and managed by integrating the rear part of the information, and display on the shared screen device is controlled.

  The participant terminal 2 according to the aspect of FIG. 2 also includes a functional configuration as shown in FIG. The operation unit B201 according to the aspect of FIG. 2 selects shared document information provided by each participant terminal 2 in accordance with an operation performed on the participant terminal 2 by the participant.

  The conference progress management unit B202 according to the aspect of FIG. 2 includes information related to each participant terminal 2 such as an IP address, and information related to shared document information such as the data size of the shared document information described above and keywords included in the document information. Are transmitted to the moderator terminal 1a. In addition, the conference progress management unit B202 includes information related to the other participant terminals 2, such as the IP address of the other participant terminals 2, the keywords included in the data size of the shared document information and the document information, and the like. Information on the shared document information provided by the participant terminals is acquired from the projector 1 and managed.

  Further, the conference progress management unit B202 according to the aspect of FIG. 2 acquires conference progress status information from the projector 1, calculates the division ratio of the shared document information provided by itself based on the above-described information, and performs main processing. Store in memory.

  As shown in FIG. 4A, the shared material management unit B 203 according to the aspect of FIG. 2 stores and manages the shared document information provided by itself on the RAM 20. 2 divides the shared document information provided by itself based on the division ratio calculated by the conference progress management unit B202. Then, the shared material management unit B 203 according to the aspect of FIG. 2 transmits the head portion of the divided shared document information to the projector 1. That is, in the mode of FIG. 2, the conference progress management unit B202 and the shared material management unit B203 function as a document information division unit, and the shared material management unit B203 functions as a document information transmission unit.

  Next, with reference to FIG. 8, the progress of the conference according to the present embodiment will be described. As shown in FIG. 8, the progress of the conference is expressed as “(*, *)”, and the number in the previous stage indicates the shared document information before switching, and the number in the subsequent stage indicates the shared document information after switching. A state in which no shared document information is selected and nothing is displayed by the projector 1b is the initial state. In this case, the conference progress is indicated as “(0, 0)”.

  When “document 1” is selected as the shared document information and “document 1” is selected by the projector 1b, the conference progress status is changed to “(0, 1)”. From then on, when “Document 1” is switched to “Document 3”, the progress of the conference is changed to “(1, 3)”. In the present embodiment, the moderator terminal 1a or the participant terminal 2 determines the division ratio of the shared document information based on such conference progress information.

  Next, the keywords extracted from the shared document information according to the present embodiment and the degree of association between the documents determined based on the extracted keywords will be described. FIG. 9 is a diagram illustrating an example of keywords extracted for each of the material 1 to the material 4 illustrated in FIG. In the following description, a case where keywords as shown in FIG. 9 are extracted will be described as an example. The information shown in FIG. 9 is managed in the moderator terminal 1a or the participant terminal 2 as keyword information included in the document.

FIG. 10 is a diagram showing a list of keywords common to the respective materials in the case of the example of FIG. Information as shown in FIG. 10 is generated based on the keyword information shown in FIG. Then, the moderator terminal 1a or the participant terminal 2 uses the information shown in FIGS. 9 and 10 to determine the relevance LINK (n ₁ ) between the material n ₁ and the material n ₂ based on the following equation (1). , N ₂ ).

Note that “m” and “n” are the numbers of keywords extracted from the materials n ₁ and n ₂ , respectively, and “k” is the number of keywords common to the materials n ₁ and n ₂ . By calculating the relevance between the materials in this way, information as shown in FIG. 11 is generated. Determining the above-described division ratio based on the degree of association calculated in this way is one of the gist according to the present embodiment.

Next, information storage states (hereinafter referred to as memory states) in the RAM 20 of each of the moderator terminal 1a and the participant terminal 2 according to the progress of the conference will be described. FIG. 12 is a diagram showing a memory state in the initial state “(0, 0)” in FIG. In the initial state, the shared document information to be displayed is not yet selected, and each shared document information is divided at the same division ratio “r”. For this same division ratio “r” (0 ≦ r ≦ 1), the maximum value of “r” satisfying the following expression (2) is used.

In Expression (2), “n” is the number of shared document information, and is “4” in the example of FIG. V ₁ , V _2, ... V _n are data sizes of document 1, document 2,. Further, V _K1 , V _K2 ,... V _Kn are data sizes of keywords extracted for material 1, material 2. V _α is the data size of the information excluding the extracted keyword information from the information managed in the progress memory 20c, that is, the above-described conference progress information, information on the participant terminals, and sharing This is the total data size of the information indicating the data size of the document information and the information on the division ratio of the document information. Also, a predetermined value can be used as V _ope shown in Expression (2).

That is, when the conference progress management unit A102 according to the present embodiment acquires the data size of the shared document information prepared by each participant terminal 2 from each participant terminal 2, the conference progress management unit A102 takes the largest data size. Based on this, “V _disp ” is determined. The conference progress management unit A102 determines the keyword data size “V _K1 ” to “V _Kn ” extracted from each shared document information and the number “n” of the connected participant terminals 2 “ Based on “V _α ”, “V _meet ” is determined.

Then, the conference progress management unit A102 determines the maximum value of “V _doc ” based on the predetermined “V” and “V _ope ” values and the determined “V _meet ” and “V _disp ” values. Find the value. Based on the maximum value of “V _doc ” thus determined and “V ₁ ” to “V _n ”, the maximum value of “r” is determined. In the initial state, the same division ratio “r” can be obtained by such calculation. In other words, the conference progress management unit A102 is based on the capacity V _doc of the shared material management memory 20a, which is an area allocated to store the head portion of the shared document information, and the data size of each shared document information. Determine the split ratio. As a result, the split rate “r” is notified from the moderator terminal 1a to each participant terminal 2, and the memory state shown in FIG. 12 is realized.

  Due to such a memory state, the amount of information that needs to be acquired when any shared document information is selected as a display target is the remaining divided portion, so that the time required for transfer is shortened and displayed. The time required for switching the document information to be performed can be shortened. Note that such processing based on the formula (2) is executed in each participant terminal 2 in the case of the mode of FIG.

Next, FIG. 13 shows the memory state at the timing T1 “(0, 1)” in FIG. At timing T1, material 1 is selected as shared document information to be displayed, and material 1 is stored in the shared material display memory 20b. In addition, when the document 1 is selected, each participant's terminal 2 has the same division rate in each participant's terminal 2 according to the degree of relevance to the document 1, so that each participant's terminal 2 has the same participation rate. Change to “r ₁ ”, “r ₂ ”... “R _n ” determined for each user terminal 2, and as a result, the top part of each shared material information stored in the shared material management memory 20 a The data size has changed.

The division ratios “r ₁ ”, “r ₂ ”,... “R _n ” determined for each participant terminal 2 are “d” satisfying the following equations (3) and (4). It is obtained by increasing / decreasing the maximum value among the values of (0 ≦ d ≦ 1) from the original division ratio. In the following formulas (3) and (4), the selected shared document information is the material k, the other shared document information is the material j, the division ratios before the change are rk and rj, and the changed Let the division ratios be rk ′ and rj ′. In addition, AVLINK (k) in Equation (4) is an average value of the degree of association between the material k and other materials among the degree of association between materials obtained as shown in FIG.

That is, the conference progress management unit A102 determines “V _disp ” and “V _meet ” based on the above formula (3) as in the initial state, and also determines “V” and “V _ope ” determined in advance. And the maximum value of “V _doc ” is obtained based on the values of “V _meet ” and “V _disp ” determined above. As a result, the relational expression between the maximum value of “V _doc ” and “r 1 ′” to “rn ′” and “V ₁ ” to “V _n ” is determined.

  Then, the conference progress management unit A102 determines that the relevance LINK (k, j) with the material k is AVLINK (k) for all the materials j other than the material k selected as the display target (material 1 in FIG. 13). ) Is exceeded, it is determined whether to add or subtract “d”, which is the increase / decrease value of the relevance level, to “rj”, which is the relevance level before switching materials. For the material k selected as a display target, the division ratio remains unchanged. When it is determined whether to add or subtract “d” for all j, the maximum value of d is determined based on the simultaneous expression with the relational expression obtained based on Expression (3).

  Based on the value of “d” thus determined, the division ratios “r1 ′”, “r2 ′”... “Rn ′” are determined for each participant terminal 2, and each participant is determined. Is notified to the service terminal 2. As a result, in each participant terminal 2, the shared document information is divided by the changed division ratio, and the divided head part is transmitted to the moderator terminal 1a, thereby realizing a memory state as shown in FIG. Is done.

  Note that such processing based on the equations (3) and (4) is executed in each participant terminal 2 in the case of the embodiment of FIG. Here, when the moderator terminal 1a calculates the division ratio, the division ratio is calculated for each participant terminal 2, but when each participant terminal 2 calculates, the shared document provided by itself The division ratio only needs to be calculated based on the degree of information relevance, and further, since the participant terminal 2 providing the shared document information selected as the display target does not need to be calculated, the processing is distributed and efficient. Can be realized.

  Next, FIG. 14 shows a memory state at the timing T2 “(1, 3)” in FIG. At timing T2, the material 3 is selected after the material 1 as the shared document information to be displayed, and the material 3 is stored in the shared material display memory 20b. In addition, as the material 3 is selected, the division ratio in each participant terminal 2 changes according to the degree of relevance with the material 3, and as a result, each share stored in the shared material management memory 20a. The data size of the top part of the document information has changed.

The division ratios “r ₁ ”, “r ₂ ”,... “R _n ” determined for each participant terminal 2 satisfy the above formula (3) and the following formula (5). It is obtained by increasing / decreasing the maximum value among the values of d ″ from the original division ratio. In the expressions (3) and (5), the selected shared document information is the material k, the previously selected shared document information is the material i, and the other shared document information is the material j. The previous division ratios are rk, rj, ri, and the changed division ratios are rk ′, rj ′, ri ′. In addition, AVLINK (k−i) in the equation (5) is the degree of association between the material k and other materials (however, excluding the material i) among the degree of association between materials obtained as shown in FIG. Is the average value.

That is, the conference progress management unit A102 determines “V _disp ” and “V _meet ” based on the above formula (3) as in the initial state, and also determines “V” and “V _ope ” determined in advance. And the maximum value of “V _doc ” is obtained based on the values of “V _meet ” and “V _disp ” determined above. As a result, the relational expression between the maximum value of “V _doc ” and “r 1 ′” to “rn ′” and “V ₁ ” to “V _n ” is determined.

  The conference progress management unit A102 then selects all the materials other than the material k selected as the display target (material 3 in FIG. 14) and the material i displayed so far (material 1 in FIG. 14). Based on whether or not the relevance level LINK (k, j) with respect to the material k exceeds AVLINK (k), the relationship level “rj” before the material switching is an increase / decrease value “d”. Decide whether to add or subtract "". In addition, for the material k selected as the display target and the material i that has been displayed up to that point, the division ratio remains unchanged. When it is determined whether to add or subtract “d” for all j, the maximum value of d is determined based on the simultaneous expression with the relational expression obtained based on Expression (3).

  Based on the value of “d” thus determined, the division ratios “r1 ′”, “r2 ′”... “Rn ′” are determined for each participant terminal 2, and each participant is determined. Is notified to the service terminal 2. As a result, in each participant terminal 2, the shared document information is divided according to the changed division ratio, and the divided head part is transmitted to the moderator terminal 1a, thereby realizing a memory state as shown in FIG. Is done.

  Note that such processing based on the equations (3) and (5) is executed in each participant terminal 2 in the case of the embodiment of FIG. Here, when the moderator terminal 1a calculates the division ratio, the division ratio is calculated for each participant terminal 2, but when each participant terminal 2 calculates, the shared document provided by itself The division ratio only needs to be calculated based on the degree of relevance of information, and further, the participant terminal 2 providing the shared document information selected as the display target and the shared document information displayed until then are provided. Since the participant terminal 2 is not required to perform calculation, the processing can be distributed and made efficient.

  As described with reference to FIGS. 13 and 14, in the document management system according to the present embodiment, for other document information having a high degree of association with the shared document information selected as a display target, the moderator terminal 1a or the projector The division ratio is increased or decreased so that the data size of the head part stored in 1 becomes larger. Document information that is highly related to the displayed document information is likely to be the next display target in the course of discussion.

  Therefore, with the configuration according to the present embodiment, when the discussion proceeds further and the document information to be displayed is switched, the document information for which more parts have already been acquired becomes the next display target and the display is switched. The remaining document information to be acquired from the participant terminal 2 can be reduced, and the time required for display switching can be shortened.

  On the other hand, considering only that the shared document information with a high degree of relevance is cached in advance in the moderator terminal 1a and the projector 1 side, and if the shared document information with a lower degree of relevance is not cached, When document information with low relevance is selected as the next display target, the time required for switching the display becomes long. In this embodiment, it is assumed that not all shared document information with high relevance is cached but all shared document information is cached, and then the cache ratio is increased or decreased based on relevance. As a result, the efficiency of the entire system is improved.

  Further, as shown in Expression (4) and Expression (5), when the material to be displayed is selected, the division ratio is not changed for the material selected as the display target and the material that has been displayed so far. Considering only increasing the division ratio for the document information that is likely to be displayed next, it is one method to reduce the division ratio for the selected document information. However, during the progress of the conference, the display may be returned to the previously displayed document information. Therefore, for materials selected for display and materials that have been displayed so far, by maintaining the division ratio, the document information display can be restored and the efficiency of the entire system can be improved. Can do.

  Next, FIG. 15 shows a memory state when the shared document information prepared in the participant terminal 2 is replaced. In FIG. 15, the shared document information is replaced in the participant terminal 2b. In this case, the moderator terminal 1a executes processing similar to the processing described with reference to FIGS. 9 to 12, the data size of the document 2 that is shared document information after replacement of the participant terminal 2b, and the extracted keyword And the data size of the keyword information are obtained, and the division ratio “r” is calculated under new conditions. As a result, as shown in FIG. 15, each shared document information is divided based on the division ratio “r” calculated under the changed condition, and the memory state shown in FIG. 15 is realized.

  In the present embodiment, the head portion of each shared document information is the information for display in the shared material display memory 20b in the shared material management memory 20a secured in the RAM 20 of the moderator terminal 1a. Stored separately. Therefore, even if the shared document information is replaced in the participant terminal 2 while any material is displayed while the conference is in progress, the moderator terminal 1a does not close the file. It is not necessary to perform an operation such as opening, and the shared document information can be replaced without disturbing the progress of the meeting.

  Next, the operation of the system according to this embodiment will be described. First, the operation of the system according to the aspect of FIG. 1 will be described. FIG. 16 is a sequence diagram showing operations from the initial state shown in FIG. 8 to timing T2 in the system according to the present embodiment. As shown in FIG. 16, first, according to the operation of each participant, the participant terminal 2 registers conference participation and transmits shared material information to the moderator terminal 1a (S1601).

  The registration of conference participation in S1601 is a process in which each participant terminal 2 transmits its own IP address to the moderator terminal 1a. Further, the shared material information transmitted in S1601 is information including the data size of the shared document information prepared in each participant's terminal 2 and the keyword extracted from the shared document information.

  When the conference participation registration of each participant terminal 2 is accepted and the shared material information is received, the moderator terminal 1a, based on the received keyword information, relates the relationship between the materials as described in FIGS. The degree is calculated (S1602). Then, as described in FIG. 12, the same division ratio “r” is calculated in each participant terminal 2 and notified to each participant terminal 2 (S1603).

  The participant terminal 2 that has acquired the division ratio from the moderator terminal 1a divides the shared document information according to the acquired division ratio, and transmits the head portion to the moderator terminal 1a (S1604). Thereby, the head part of the shared document information of each participant terminal 2 is stored in the RAM 20 of the moderator terminal 1a, and a memory state as shown in FIG. 12 is realized.

  In this state, when the moderator selects the shared document information to be displayed by operating the moderator terminal 1a, the moderator terminal 1a accepts the operation, and the corresponding part of the selected shared document information is the corresponding participant. Request is made to the service terminal 2 (S1605). Upon receiving the request for the rear part of the shared document information, the participant terminal 2 transmits the rear part of the shared document information to the moderator terminal 1a according to the request (S1606).

  Then, the moderator terminal 1a generates the shared document information in the display memory by integrating the rear part of the shared document information transmitted in response to the request with the head part already acquired and stored in the RAM 20. When the display of the document is started and the shared document information to be displayed is selected, information on the progress of the meeting such as “(0, 1)” at timing T1 in FIG. The division ratio is recalculated as described with reference to FIG. At this time, as described in FIG. 13, the moderator terminal 1a calculates a division ratio for each participant terminal 2 and notifies the participant terminal 2 of the division ratio (S1607).

  The participant terminal 2 that has acquired the recalculated division ratio divides the shared document information according to the acquired division ratio, and transmits the head portion to the moderator terminal 1a (S1608). Thereby, the memory state as shown in FIG. 13 is realized. After that, when the next document information to be displayed is further selected at the timing T2 described with reference to FIG. 8, the processing from S1605 is repeated to execute the processing described with reference to FIG. A memory state as shown in FIG.

  Next, the operation when the shared document information is replaced in any of the participant terminals 2 will be described with reference to FIG. As shown in FIG. 17, when a participant operates the participant terminal 2 to instruct the replacement of the shared document information, the participant terminal 2 accepts the operation and the shared material based on the shared document information obtained by the replacement. Information is transmitted to the moderator terminal 1a (S1701).

  When the shared material information of the replaced shared document information is received, the moderator terminal 1a recalculates the degree of association between the materials as described in FIGS. 9 to 11 based on the received keyword information (S1702). ). Then, as described in FIG. 12, the same division ratio “r” is calculated in each participant terminal 2 and notified to each participant terminal 2 (S1703).

  The participant terminal 2 that has acquired the division ratio from the moderator terminal 1a divides the shared document information according to the acquired division ratio, and transmits the head portion to the moderator terminal 1a (S1704). As a result, the head portion of the shared document information of each participant terminal 2 is stored in the RAM 20 of the moderator terminal 1a, and a memory state as shown in FIG. 15 is realized.

  Next, the operation of the system according to the aspect of FIG. 2 will be described. 18 is a sequence diagram showing an operation from the initial state shown in FIG. 8 to timing T2 in the system according to the embodiment of FIG. As shown in FIG. 18, first, according to the operation of each participant, the participant terminal 2 registers conference participation and transmits shared material information to the projector 1 (S1801). The process of S1801 is the same as the process of S1601.

Upon receiving the conference registration of each participant terminal 2 and receiving the shared material information, the projector 1 transmits all the received shared material information to all the participant terminals 2 (S1802). In S1802, in addition to the shared material information described above, the division ratio “r” is calculated as described above with reference to FIG. 12, such as V, V _ope , V _doc , V _meet , V _disp , and V _α . Information necessary for this is notified at the same time.

  Each participant terminal 2 that has acquired the shared material information from the projector 1 calculates the degree of association between the materials as described in FIGS. 9 to 11 based on the keyword information included in the shared material information. 12, the same division ratio “r” is calculated in each participant terminal 2, the shared document information is divided according to the calculated division ratio, and the head portion is transmitted to the projector 1 (S <b> 1803). . As a result, the leading portion of the shared document information of each participant terminal 2 is stored in the RAM 20 of the projector 1, and a memory state as shown in FIG. 12 is realized.

  In this state, when the moderator selects the shared document information to be displayed by operating the projector 1, the projector 1 accepts the operation and requests the corresponding participant terminal 2 for the rear part of the selected shared document information. (S1804). Upon receiving the request for the rear part of the shared document information, the participant terminal 2 transmits the rear part of the shared document information to the projector 1 in accordance with the request (S1805).

  Then, the projector 1 integrates the rear part of the shared document information transmitted in response to the request with the head part already acquired and stored in the RAM 20, and generates the shared document information in the display memory. When the display is started and the shared document information to be displayed is selected, information on the progress of the meeting such as “(0, 1)” at timing T1 in FIG. 8 is generated, and the information is sent to each participant. (S1806).

  Each participant terminal 2 that has received the information on the progress of the conference from the projector 1 recalculates the division rate according to the degree of association between the documents as described in FIG. 13, and the shared document information is obtained according to the calculated division rate. Divide and send the head part to the projector 1 (S1807). Thereby, the memory state as shown in FIG. 13 is realized.

  After that, when the next document information to be displayed is further selected at the timing T2 described with reference to FIG. 8, the processing from S1804 is repeated to execute the processing described with reference to FIG. A memory state as shown in FIG.

  Next, the operation when the shared document information is replaced in any of the participant terminals 2 in the mode of FIG. 2 will be described with reference to FIG. As shown in FIG. 19, when a participant operates the participant terminal 2 to instruct the replacement of the shared document information, the participant terminal 2 accepts the operation, and the shared material based on the shared document information obtained by the replacement Information is transmitted to the projector 1 (S1901).

  When the shared material information of the replaced shared document information is received, the projector 1 notifies each participant terminal 2 of the newly received shared material information (S1902). Upon receiving notification of new shared material information, each participant terminal 2 re-establishes the degree of association between materials based on the keyword information included in the shared material information as described with reference to FIGS. In addition, as described with reference to FIG. 12, the same division ratio “r” is calculated in each participant terminal 2 (S1903).

  The participant terminal 2 having newly calculated the division ratio divides the shared document information according to the calculated division ratio, and transmits the head portion to the projector 1 (S1904). As a result, the leading portion of the shared document information of each participant terminal 2 is stored in the RAM 20 of the projector 1, and a memory state as shown in FIG. 15 is realized.

  As described above, in the document information management system according to the present embodiment, a part of the shared document information prepared by each conference participant is divided and stored on the memory of the moderator terminal 1 a or the projector 1. By collecting and storing, when any shared document information is selected and displayed, only the remaining part needs to be acquired, and the waiting time required for switching the material to be displayed is reduced. can do.

  Further, a part of the collected shared document information is not stored as a file in a non-volatile storage medium such as a hard disk drive, but is stored in a volatile storage medium such as the RAM 20, so When switching, it is not necessary to select a file, start an application, etc., and it is only necessary to select one of the materials stored in the RAM 20, so that the operation burden on the system user can be reduced. It is.

  In the above embodiment, the moderator terminal 1a or the projector 1 acquires the rear part of the shared document information from the participant terminal 2 and integrates it with the head part already stored, thereby obtaining the shared document information. The case where display is started after generation is described as an example. In addition, depending on the information format and application specifications, when the moderator selects the shared document information to be displayed by operating the moderator terminal 1a, the shared document information is sent to the corresponding participant terminal 2. At the same time as requesting the rear part of the present invention, the moderator terminal 1a can start display using the first part of the shared document information already stored.

  Thereby, the switching of the display of the document can be further accelerated. Such an aspect is realized by dividing the head portion of the shared document information in accordance with the determined division ratio and storing it in the moderator terminal 1a or the projector 1. That is, it is preferable that it is the head part of the shared document information that is divided according to the determined division ratio and stored in the moderator terminal 1a or the projector 1.

1, 1b Projector 1a Moderator terminal 2, 2a, 2b, 2c, 2d Participant terminal 10 CPU
20 RAM
30 ROM
40 HDD
50 I / F
60 LCD
70 Operation unit 80 Bus 101 Operation unit A
102 Meeting progress management part A
103 Shared Materials Management Department A
104 Shared document display area A
201 Operation part B
202 Meeting progress management part B
203 Shared Materials Management Department B

JP 2004-120376 A JP 2004-48183 A

Claims (10)

A document information management apparatus for managing document information displayed on a shared screen shared by a plurality of users,
Information obtained by dividing a part of each document information held for display on the shared screen by the user terminal operated by each of the plurality of users is obtained from each of the plurality of user terminals and stored in a storage medium. A document information division management unit for storing and managing;
Of the document information designated for display on the shared screen, the remaining divided information is acquired from the corresponding user terminal, and is integrated with a part of the stored document information to generate the document information. A document information generation unit;
A document information management apparatus comprising: a document information output unit that outputs the generated document information to be displayed on the shared screen.   Information managed by the document information division management unit is determined based on a storage capacity allocated for storing information obtained by dividing a part of each document information and a data size of each document information. The document information management apparatus according to claim 1, wherein the information is divided based on the divided ratio.   The information managed by the document information division management unit is a division determined for each document information based on information indicating a degree of association with the document information displayed on the shared screen. The document information management apparatus according to claim 1, wherein the document information management apparatus is information divided based on a rate.   The information managed by the document information division management unit is a head portion obtained by dividing each piece of document information into a head portion and other portions based on a predetermined division ratio. 3. The document information management apparatus according to any one of items 3.   When the document information generation unit acquires the remaining divided information from the corresponding user terminal, the information obtained by dividing a part of the document information managed by the document information division management unit is 5. The document information management apparatus according to claim 1, wherein the document information is generated as separate information. Information obtained by dividing a part of document information held by the plurality of user terminals to be displayed on a user terminal operated by each of the plurality of users and a shared screen shared by the plurality of users. Information as a user terminal included in a document information management system that includes a display device that acquires and stores the remaining portion of selected document information from each user terminal and displays the selected document information on the shared screen. A processing device comprising:
The division ratio is determined based on a storage capacity allocated to store information obtained by dividing a part of the document information and a data size of each document information, and is retained based on the determined division ratio. A document information dividing unit for dividing a part of the document information,
And a document information transmitting unit that transmits a part of the divided document information to the display device and transmits the remaining divided portion to the display device according to a selection in the display device. Processing equipment.   The document information dividing unit determines the division ratio based on information indicating a degree of association between the held document information and the document information displayed on the shared screen. The information processing apparatus described in 1.   The said document information division | segmentation part produces | generates the information which shows the relevance degree between each said document information based on the number in which the keyword extracted from each said document information is common. Information processing device.   The document information dividing unit determines the division rate based on the data size of the changed document information when the held document information is changed, and is changed based on the determined division rate. 9. The information processing apparatus according to claim 6, wherein a part of the later document information is divided. A document information management apparatus that manages document information displayed on a shared screen shared by a plurality of users, and a document information management system that includes a user terminal operated by each of the plurality of users,
The document information management device includes:
Information obtained by dividing a part of each piece of document information held by the plurality of user terminals for display on the shared screen is acquired from each of the plurality of user terminals and stored in a storage medium for management. A document information division management unit;
Of the document information designated for display on the shared screen, the remaining divided information is acquired from the corresponding user terminal, and is integrated with a part of the stored document information to generate the document information. A document information generation unit;
A document information output unit for outputting the generated document information to be displayed on the shared screen,
The user terminal includes a document information dividing unit that divides the held document information based on a predetermined division rate;
A document information transmission unit that transmits a part of the divided document information to the document information management apparatus and transmits the remaining divided part to the document information management apparatus according to a selection in the document information management apparatus. Document information management system characterized by this.

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