Digital Space Control System, Digital Space Control Method, and Program

Abstract

Enable the environment of the digital space to be dynamically changed in relation to communication between users carried out in the digital space. 【Solution means】A digital space control system is configured to include a text acquisition unit that acquires a unit text input in response to an operation of inputting a unit text composed of one or more texts, and a digital space control unit that changes an environment image drawn in the environment of the digital space based on the unit text acquired by the text acquisition unit.

Description

[Technical Field]

[0001] The present invention relates to a digital space control system, a digital space control method, and a program. [Background technology]

[0002] There is known a technique for displaying a virtual environment screen including an interlocutor image based on interlocutor information about the interlocutor and a background pattern related to the interlocutor image (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-239397 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, if it were possible to dynamically change the environment of a digital space in relation to the content of communication between users in a digital space such as the Metaverse, it would be possible to provide an interesting digital space for the users communicating, which would be desirable.

[0005] In consideration of the above-mentioned problems, an object of the present invention is to make it possible to dynamically change the environment of a digital space in relation to communication between users that takes place in the digital space. [Means for solving the problem]

[0006] One aspect of the present invention for solving the above-described problems is a digital space control system including a text acquisition unit that acquires unit texts input in response to an operation of inputting unit texts composed of one or more texts, and a digital space control unit that changes an environmental image drawn in an environment of a digital space based on the unit texts acquired by the text acquisition unit.

[0007] One aspect of the present invention is a digital space control method in a digital space control system, including a text acquisition step in which a text acquisition unit acquires unit texts input in response to an operation of inputting unit texts composed of one or more texts, and a digital space control step in which a digital space control unit changes an environmental image drawn in an environment of a digital space based on the unit texts acquired in the text acquisition step.

[0008] One aspect of the present invention is a program that causes a computer in a digital space control system to function as a text acquisition unit that acquires unit texts input in response to an operation of inputting unit texts composed of one or more texts, and a digital space control unit that changes an environmental image drawn in an environment of a digital space based on the unit texts acquired by the text acquisition unit.

Advantages of the Invention

[0009] According to the present invention, there is an effect that the environment of the digital space can be dynamically changed in relation to communication between users performed in the digital space.

Brief Description of the Drawings

[0010]

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Mode for Carrying Out the Invention

[0011] <Embodiment> FIG. 1 shows an example of the overall configuration of the digital space control system in this embodiment. The digital space control system of this embodiment includes a digital space control device 100 and a user terminal 200. The digital space control device 100 and the user terminal 200 are communicably connected via a network.

[0012] The digital space control device 100 provides a metaverse as a digital space. The user can cause the user terminal 200 owned by the user to access the digital space control device 100, and display the metaverse in a three-dimensional space on the user terminal 200. The user can actuate an avatar corresponding to himself / herself in the displayed metaverse.

[0013] In the digital space control system of this embodiment, each of a plurality of users who use the metaverse can operate the user terminal 200 to input unit texts (unit character strings) consisting of one or more texts as chat messages. The unit texts input by each user are presented in a timeline format in the metaverse as a chat room. Furthermore, the digital space control system of this embodiment controls to change the state of the surrounding environment in the metaverse as a chat room so as to be related to the chat content taking place in the metaverse.

[0014] Hereinafter, with reference to FIGS. 2 to 5, an example of the mode of the metaverse that provides a chat room in this embodiment and an example of user use will be described. A chat room in the metaverse can be newly created by a user acting as the host and performing an operation to open a chat room. When opening a chat room, the host user operates to display a chat room opening screen on the user terminal 200 in the metaverse.

[0015] FIG. 2 shows an example of a chat room opening screen P1. In the chat room opening screen P1 of the figure, a thread name input area AR1, a create button BT1, and a cancel button BT2 are arranged. The host user performs an operation of inputting a name (thread name) representing the theme corresponding to the chat room to be created. The user can perform an operation of inputting one or more texts (an example of unit texts) representing the thread name to the thread name input area AR1. After inputting the unit text as the thread name to the thread name input area AR1 as described above, the user operates the create button BT1 to instruct the creation of a new chat room. If the user wants to cancel the creation of the chat room, the user operates the cancel button BT2 on the chat room opening screen P1. In response to the cancel button BT2 being operated, the chat room opening screen P1 is erased.

[0016] In response to the organizer's user operating the creation button BT1 on the chat room creation screen P1, a newly created chat room is created in the metaverse and made public so that other users can also access it.

[0017] Figure 3 shows an overall example of the state of the chat room RM created in the metaverse. The figure shows the state observed by overlooking the chat room RM from the planar direction. In the chat room RM, a chat bulletin board PN is arranged. The chat bulletin board PN includes a thread name area AR11 and a timeline area AR12. The thread name area AR11 is an area where the thread name corresponding to the chat room is displayed. The timeline area AR12 is an area where chat messages posted by users who have participated in the chat room RM are displayed in a timeline format according to the time series.

[0018] Also, in the chat room RM, a wall surface WL is arranged together with the chat bulletin board PN. In this case, the wall surface WL is arranged so as to span three sides where the chat bulletin board PN is not provided.

[0019] The avatar AVT corresponding to the user participating in the chat room RM can exist in the space surrounded by the chat bulletin board PN and the wall surface WL in the chat room RM as shown in the figure. In this case, the user can observe the chat bulletin board PN and the wall surface WL by operating the user terminal 200 to change the line-of-sight direction of the avatar AVT.

[0020] Figure 4 shows an example of the state of the screen of the chat room RM displayed on the user terminal 200. In the screen of the chat room RM in the figure, the avatar AVT corresponding to the user is positioned so as to direct the line of sight towards the chat bulletin board PN. By having the avatar AVT facing the chat bulletin board in this way, the user can also observe the chat bulletin board PN from the front.

[0021] Specifically, in the chat bulletin board PN in the figure, since "I wish spring would come soon" is displayed in the thread name area AR11, it can be grasped that the theme of the chat room is related to the arrival of spring.

[0022] Also, in the timeline area AR12, the chat messages posted by the users participating in the chat room RM are displayed from top to bottom according to the elapsed time since posting. In the example of the figure, the message information corresponding to one chat message includes a string composed of the posting order, the posting time, the user name, and the unit text composed of one or more texts (characters).

[0023] When trying to post a chat message, the user operates the post button BT11 arranged on the screen where the chat room RM is displayed. In response to the operation of the post button BT11, although not shown in the figure, for example, a text input box is displayed, and the user can input a unit text composed of one or more texts (characters) in the text input box and perform a send operation. In response to the send operation, message information including a string composed of the unit text input by the user is displayed so as to be added at the bottom of the timeline area AR12.

[0024] FIG. 5 shows an example state where the line-of-sight direction of the avatar corresponding to the user faces the wall surface WL as the screen of the chat room RM displayed on the user terminal 200. On the wall surface WL, an image corresponding to the unit text previously input by the user in relation to the chat room RM (an example of an environmental image drawn in the environment of the digital space) is displayed. Specifically, first, when the chat room RM is created, an environmental image reflecting the thread name input by the host user is displayed on the wall surface WL. Specifically, in FIG. 4, a state is shown where a cherry tree in a blooming state is displayed on the wall surface WL, reflecting the content of the unit text as the thread name "Isn't it time for spring to come soon?". It is preferable that the display of the environmental image corresponding to the input of the unit text as such a thread name is performed immediately in response to the input of the thread name.

[0025] In addition, as the unit text as chat messages posted due to the progress of the chat communication increases on the wall surface WL, the environmental image displayed on the wall surface WL is changed so as to reflect the content of the previous chat messages. At this time, depending on the content of the chat messages being posted, the previously displayed cherry tree may be changed, or new content may be added while the display of the cherry tree is maintained. Also, depending on the content of the chat messages being posted, the previously displayed cherry tree may disappear and transition to the display of other content. It is also preferable that the display of the environmental image corresponding to the input of the unit text as such chat messages is performed immediately in response to the input of the chat messages.

[0026] As described above, in this embodiment, the image displayed on the wall surface WL in the chat room RM changes dynamically according to the content of the unit text input in relation to the communication by the user in the metaverse as the chat room RM. That is, the environment of the digital space as the metaverse is changed according to the content of the unit text such as the thread name and chat messages input by the user corresponding to the chat room RM. By dynamically changing the environment of the digital space according to the progress of the chat communication in this way, the interest for the users participating in the chat communication in the chat room RM increases.

[0027] Referring to FIG. 6, a hardware configuration example of the digital space control device 100 will be described. The digital space control device 100 in the figure includes a communication device 1001, a ROM (Read Only Memory) 1002, a RAM (Random Access Memory) 1003, a storage 1004, a CPU (Central Processing Unit) 1005, and a GPU (Graphics Processing Unit). The communication device 1001, the ROM 1002, the RAM 1003, the storage 1004, the CPU 1005, and the GPU 1006 are connected by a bus 1007.

[0028] The communication device 1001 is a device corresponding to communication via a network. The ROM 1002 stores non-rewritable data. The RAM 1003 temporarily stores data used for operations executed by the CPU 1005. The storage 1004 is, for example, an HDD (Hard Disc Drive) or an SSD (Solid State Drive), and stores various types of data including, for example, program data. The CPU 1005 executes operations according to various controls and processes by executing the program stored in the storage 1004. The GPU 1006 executes processes related to image processing. Note that a plurality of network terminals distributed so as to be able to execute transactions corresponding to the blockchain may be configured to obtain functions equivalent to those of the digital space control device 100.

[0029] Figure 7 shows an example of the functional configuration of the digital space control device 100. The functions of the digital space control device 100 in the figure are realized by the CPU (Central Processing Unit) provided in the digital space control device 100 executing a program. The digital space control device 100 in the figure includes a communication unit 101, a control unit 102, and a storage unit 103. The communication unit 101 communicates with the user terminal 200 via a network.

[0030] The control unit 102 executes various controls in the digital space control device 100. The control unit 102 in the figure includes a text acquisition unit 121 and a digital space control unit 122.

[0031] The text acquisition unit 121 acquires the input unit text in response to an operation of inputting a unit text as a thread name by a user's operation or an operation of inputting a unit text as a chat message.

[0032] The digital space control unit 122 constructs a metaverse of the chat room RM as digital space control by rendering, and causes the constructed chat room RM to be displayed on the user terminal 200. The digital space control unit 122 displays the unit text acquired by the text acquisition unit 121 in the chat room RM in digital space control. When the unit text acquired by the text acquisition unit 121 is a thread name, the digital space control unit 122 displays the acquired unit text in the thread name area AR11 of the chat bulletin board PN. Also, when the unit text acquired by the text acquisition unit 121 is a chat message, the digital space control unit 122 displays the acquired unit text as a new timeline in the timeline area AR12 of the chat bulletin board PN.

[0033] The storage unit 103 stores various types of information corresponding to the digital space control device 100. The storage unit 103 includes a digital space configuration information storage unit 131 and an avatar information storage unit 132.

[0034] The digital space configuration information storage unit 131 stores digital space configuration information. The digital space configuration information may include data for reproducing an indoor space as a chat room RM, objects, sounds, etc., as exemplified in FIGS. 2 to 4.

[0035] The avatar information storage unit 132 stores avatar information regarding the avatar AVT that the user uses as their alter ego. The avatar information storage unit 132 may store avatar information corresponding to each user. The avatar information corresponding to one user may have a structure in which a combination of the avatar ID of the corresponding avatar and the avatar configuration data is associated with the user ID. The avatar configuration data may be data indicating, for example, a combination of parts constituting an object as the corresponding avatar. Further, the avatar information may also include the user name of the user specified by the user ID. The user name is input, for example, when the user logs in to the metaverse that provides the chat room of the present embodiment.

[0036] Note that a plurality of avatars may be set corresponding to one user, and the user may be able to cause the selected avatar among the plurality of avatars to exist in the metaverse. In this case, the avatar information corresponding to one user may store a combination of the avatar ID and the avatar configuration data for each of the plurality of set avatars.

[0037] Referring to FIG. 8, a functional configuration example of the user terminal 200 will be described. Note that the hardware configuration of the user terminal 200 includes a communication device, a ROM, a RAM, a storage, and a CPU (and a GPU) according to FIG. 5, and may include input devices such as buttons, keyboards, and touch panels, and output devices such as displays and audio outputs. Further, the user terminal 200 may include a camera corresponding to a code reader function for reading code symbols such as two-dimensional codes.

[0038] The user terminal 200 shown in FIG. 8 includes a communication unit 201, an operation unit 202, a display unit 203, a control unit 204, and a storage unit 205. The communication unit 201 is communicably connected to the digital space control device 100 via a network.

[0039] The operation unit 202 includes devices such as a touch panel, keys, and buttons as hardware, receives user operations, and outputs operation information corresponding to the received operations to the control unit 204. Further, the operation unit 202 may be enabled for voice operations corresponding to the voice uttered by the user.

[0040] The display unit 203 includes a display device such as a touch panel as hardware, and displays an image under the control of the control unit 204.

[0041] The control unit 204 executes various controls in the user terminal 200.

[0042] The storage unit 205 stores, for example, programs executed by the CPU, GPU, etc. included in the user terminal 200, as well as information related to the user terminal 200.

[0043] Referring to the flowchart of FIG. 9, an example of a processing procedure executed by the digital space control system of the present embodiment in relation to the new creation of the chat room RM will be described. First, an example of a processing procedure executed by the user terminal 200 will be described. Step S100: When creating a new chat room RM, the user who is the host of the chat room RM causes the user terminal 200 to display a chat room opening screen P1 (Figure 2), and then performs an operation of inputting unit text as the thread name in the thread name input area AR1. In the user terminal 200, the control unit 204 accepts the input of the unit text as the thread name.

[0044] Step S102: When the user as the host inputs unit text as the thread name in the thread name input area AR1, the user performs a chat room creation instruction operation. The chat room creation instruction operation may be an operation on the creation button BT1 on the chat room opening screen P1. The control unit 204 accepts the chat room creation instruction operation.

[0045] Step S104: In response to accepting the chat room creation instruction operation, the control unit 204 sends a chat room creation request to the digital space control device 100. The chat room creation request includes the unit text as the thread name input in Step S100.

[0046] Next, a description will be given of an example of the processing procedure executed by the digital space control device 100. Step S200: In the digital space control device 100, the text acquisition unit 121 receives the chat room creation request sent from the user terminal 200 in Step S104, and acquires the unit text as the thread name included in the received chat room creation request.

[0047] Step S202: In the digital space control device 100, the digital space control unit 122 generates an image generation prompt based on the unit text of the thread name acquired in step S200. The image generation prompt in this case is a prompt to be input to the image generation AI (Artificial Intelligence) when generating an environmental image to be displayed on the wall surface WL. When generating the image generation prompt, the digital space control unit 122 may utilize a text generation AI that has been trained to generate the image generation prompt. That is, the digital space control unit 122 may input the unit text of the thread name to the text generation AI and acquire the text output by the text generation AI as the image generation prompt.

[0048] Step S204: The digital space control unit 122 generates an environmental image to be displayed on the wall surface WL. The digital space control unit 122 inputs the image generation prompt generated in step S202 to the image generation AI and causes the image generation AI to generate an environmental image. The digital space control unit 122 acquires the image thus generated as the environmental image.

[0049] Step S206: The digital space control unit 122 creates a chat room RM. In this case, the digital space control unit 122 generates the environment of the chat room RM in the manner illustrated in FIG. 3. Further, the digital space control unit 122 draws the environmental image generated in step S204 on the wall surface WL in the chat room RM. Also, the digital space control unit 122 draws the thread name acquired in step S200 in the thread name area AR11 of the chat bulletin board PN arranged in the chat room RM.

[0050] Step S208: The digital space control unit 122 causes the chat room RM created in step S206 to be displayed on the user terminal 200 that has accessed by a user's operation.

[0051] An example of a processing procedure that the digital space control system of this embodiment executes in response to the posting of a chat message will be described with reference to the flowchart of FIG. First, an example of a processing procedure executed by the user terminal 200 will be described. Step S300: A user participating in the chat room RM performs an operation to post a chat message (chat message posting operation) on the user terminal 200. The control unit 204 of the user terminal 200 accepts the chat message posting operation.

[0052] Step S302: The control unit 204 transmits the unit text as a chat message input by the chat message posting operation to the digital space control device 100.

[0053] Next, an example of a processing procedure executed by the digital space control device 100 will be described. Step S400: In the digital space control device 100, the text acquisition unit 121 initializes a variable n, which indicates the number of times a chat message has been acquired (the number of times a message has been additionally displayed), to "0".

[0054] Step S402: In the digital space control device 100, the text acquisition unit 121 acquires the unit text as the chat message sent in step S302.

[0055] Step S404: In the digital space control device 100, the digital space control unit 122 adds and displays the message information including the unit text as the chat message acquired in step S400 in the timeline area AR12 of the chat bulletin board PN in the chat room RM.

[0056] Step S406: The text acquisition unit 121 (or the digital space control unit 122) increments the variable n.

[0057] Step S408: The text acquisition unit 121 determines whether the current variable n is equal to or greater than a predetermined threshold th (for example, "5"). If the variable n is less than the threshold th, the process returns to step S402.

[0058] Step S410: If it is determined in step S408 that the current variable n is equal to or greater than the threshold th, the digital space control unit 122 acquires the unit text of the chat messages posted in the past.

[0059] In step S410, the digital space control unit 122 may acquire the unit text for each of all the chat messages posted since the chat room RM was opened. Alternatively, in step S410, the digital space control unit 122 may acquire the unit text of the chat messages for a predetermined number in the past counting back from the last post. Alternatively, in step S410, the digital space control unit 122 may acquire the unit text of the chat messages for a predetermined period in the past counting back from the last post.

[0060] Step S412: The digital space control unit 122 generates an image generation prompt by inputting the unit text acquired in step S410 to the text generation AI.

[0061] Step S414: The digital space control unit 122 generates an environmental image to be displayed on the wall surface WL by inputting the image generation prompt generated in step S412 to the image generation AI.

[0062] Step S416: The digital space control unit 122 updates the image displayed on the wall surface WL by drawing the wall surface WL in the chat room RM with the environmental image generated in step S414.

[0063] <Modification Example> Hereinafter, a modification example of the present embodiment will be described. [First Modification Example] When opening the chat room RM, the digital space control unit 122 may draw a default environment image prepared in advance on the wall surface WL regardless of the environment image reflecting the thread name. In this case, the digital space control unit 122 may update the environment image of the wall surface WL by the process of FIG. 10 in response to receiving a chat message.

[0064] [Second Modified Example] The digital space control system of the present embodiment may also be capable of supporting voice chat. In this case, the user performs an operation of inputting the voice uttered by himself / herself to the user terminal 200. The user terminal 200 may transmit the voice signal of the input voice to the digital space control device 100. The digital space control device 100 analyzes the received voice signal to obtain a unit text corresponding to the user's uttered content, and may display a chat message based on the obtained unit text in the chat room RM.

[0065] [Third Modified Example] In the above embodiment, the environment image to be changed according to the unit text input by the user is not limited to the image on the wall surface WL in the chat room RM. For example, in the chat room RM, the chat bulletin board PN and the background image behind the wall surface WL may also be targets for change as the environment image. Also, 3D objects arranged in the chat room RM and the like may also be targets for change. Further, in the chat room RM, for example, the weather may be changed or special effects due to light, sound, etc. may be generated according to the unit text input by the user.

[0066] Note that a program for realizing functions such as the above-described digital space control device 100 and user terminal 200 may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed to perform processing such as the above-described digital space control device 100 and user terminal 200. Here, "reading and executing the program recorded on the recording medium by the computer system" includes installing the program in the computer system. The "computer system" referred to here is assumed to include hardware such as an OS and peripheral devices. Further, the "computer system" may include a plurality of computer devices connected via a network including a communication line such as the Internet, WAN, LAN, or dedicated line. Also, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, magneto-optical disk, ROM, CD-ROM, or a storage device such as an HDD or SDD built into a computer system. Thus, the recording medium storing the program may be a non-transitory recording medium such as a CD-ROM. The recording medium also includes an internal or external recording medium provided so as to be accessible from a distribution server for distributing the program. The code of the program stored in the recording medium of the distribution server may be different from the code of the program executable on the terminal device. That is, as long as it can be downloaded from the distribution server and installed in a form executable on the terminal device, the form stored in the distribution server does not matter. Note that the program may be divided into a plurality of parts, downloaded at different timings, and then combined on the terminal device, or the distribution servers for distributing the respective divided programs may be different. Further, the "computer-readable recording medium" is assumed to include a volatile memory (RAM) inside a computer system serving as a server or client when the program is transmitted via a network, which holds the program for a certain period of time. Also, the above program may be for realizing a part of the above-described functions.Furthermore, it may be a so-called difference file (difference program) that can be realized in combination with a program already recorded in a computer system for the above-described functions.

[0067] <Supplementary Note> (1) One aspect of the present embodiment is a digital space control system including a text acquisition unit that acquires a unit text input in response to an operation of inputting one or more unit texts consisting of text, and a digital space control unit that changes an environmental image drawn in the environment of a digital space based on the unit text acquired by the text acquisition unit.

[0068] (2) One aspect of the present embodiment is the digital space control system according to (1), wherein the digital space control unit newly creates a digital space as a chat room in which an environmental image reflecting the content as a thread name indicated by the unit text acquired by the text acquisition unit is displayed, in response to an operation of inputting a unit text as a thread name of the chat room.

[0069] (3) One aspect of the present embodiment is the digital space control system according to (1) or (2), wherein the digital space control unit may display text consisting of the unit text acquired by the text acquisition unit in a digital space as a chat room.

[0070] (4) One aspect of the present embodiment is the digital space control system according to (3), wherein when an operation of inputting a unit text as a thread name of a chat room is performed, the digital space control unit may display the unit text as a thread name acquired by the text acquisition unit in the digital space.

[0071] (5)One aspect of this embodiment is the digital space control system according to (3) or (4), wherein the digital space control unit may display the unit text as a chat message acquired by the text acquisition unit in the digital space in response to an operation of inputting the unit text as a chat message.

[0072] (6)One aspect of this embodiment is the digital space control system according to (2) to (5), wherein the digital space control unit may change the environmental image based on the unit text acquired by the text acquisition unit each time the text acquisition unit acquires the unit text as a chat message a predetermined number of times.

Explanation of Reference Numerals

[0073] 100 Digital space control device, 101 Communication unit, 102 Control unit, 103 Storage unit, 121 Text acquisition unit, 122 Digital space control unit, 131 Digital space configuration information storage unit, 132 Avatar information storage unit, 200 User terminal, 201 Communication unit, 202 Operation unit, 203 Display unit, 204 Control unit, 205 Storage unit

Claims

1. A text acquisition unit that acquires a unit text input in response to an operation of inputting a unit text consisting of one or more texts, and a digital space control unit that changes an environmental image drawn over the entire wall surface arranged in a three-dimensional digital space environment based on the unit text acquired by the text acquisition unit. The digital space control unit is a digital space in which, in response to an operation of inputting a unit text as a thread name of a chat room, an environmental image associated with the received thread name and reflecting the content as the thread name indicated by the unit text acquired by the text acquisition unit is displayed, and includes an area where the unit text as the thread name acquired by the text acquisition unit is displayed and an area where the unit text as a chat message is displayed in chronological order. A chat bulletin board and a digital space of a chat room surrounded by an avatar as a user's avatar for inputting a unit text by the wall surface on which the environmental image is displayed are newly created. Each time the text acquisition unit acquires a unit text as a chat message a predetermined number of times, the environmental image is changed based on the unit text acquired up to a predetermined past timing among the unit texts acquired so far by the text acquisition unit. A digital space control system.

2. A digital space control method in a digital space control system, comprising: a text acquisition step in which a text acquisition unit acquires a unit text input in response to an operation of inputting a unit text consisting of one or more texts; and a digital space control step in which a digital space control unit changes an environmental image drawn over the entire wall surface arranged in a three-dimensional digital space environment based on the unit text acquired in the text acquisition step. The digital space control step In response to an operation of inputting unit text as a thread name of a chat room, a digital space is created in which an environmental image associated with the received thread name and reflecting the content as the thread name indicated by the unit text obtained by the text acquisition step is displayed. The digital space includes a chat bulletin board including an area where the unit text as the thread name obtained by the text acquisition unit is displayed and an area where unit text as chat messages is displayed in chronological order, and a digital space of a chat room surrounded by an avatar as a user's avatar for inputting unit text by a wall surface on which the environmental image is displayed. Each time the unit text as a chat message is acquired a predetermined number of times by the text acquisition step, the environmental image is changed based on the unit text acquired up to a predetermined past timing among the unit text acquired so far by the text acquisition step. Digital space control method.

3. A computer in a digital space control system, A text acquisition unit that acquires unit text input in response to an operation of inputting unit text consisting of one or more texts, A program for causing a digital space control unit to function, the digital space control unit changing an environmental image drawn over the entire wall surface arranged in the environment of the three-dimensional digital space based on the unit text acquired by the text acquisition unit, The digital space control unit, In response to an operation of inputting unit text as a thread name of a chat room, a digital space is created in which an environmental image associated with the received thread name and reflecting the content as the thread name indicated by the unit text obtained by the text acquisition unit is displayed. The digital space includes a chat bulletin board including an area where the unit text as the thread name obtained by the text acquisition unit is displayed and an area where unit text as chat messages is displayed in chronological order, and a digital space of a chat room surrounded by an avatar as a user's avatar for inputting unit text by a wall surface on which the environmental image is displayed. Each time the text acquisition unit acquires a unit text as a chat message a predetermined number of times, the environment image is changed based on the unit texts acquired so far by the text acquisition unit up to a predetermined past timing among the unit texts acquired so far. Program.

Images