# US 11,906,741 B2 · Display control device, display control method, and non-transitory computer-readable medium storing program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,906,741 B2 - Document ID: US11906741B2 - Status: Granted - Kind: B2 - Application number: 17/289,286 - Filed: 2019-10-30 - Published: 2021-12-16 - Granted: 2024-02-20 - Earliest claimed: 2018-11-06 - Assignees: NEC Corporation; NEC Solution Innovators, Ltd. - Applicants: NEC Corporation; NEC Solution Innovators, Ltd. - Inventors: Yousuke Motohashi; Mayo Taketa; Takashi Nonaka; Hiroaki Yanagisawa - Web page: https://patentgrep.com/patent/US11906741B2 ## CPC - G02B 27/0172: {characterised by optical features} - G06F 3/01: Input arrangements or combined input and output arrangements for interaction between user and computer (G06F3/16 takes precedence) - G06F 3/0484: for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range - G06T 19/006: {Mixed reality (object pose determination, tracking or camera calibration for mixed reality G06T7/00)} - G09B 5/02: with visual presentation of the material to be studied, e.g. using film strip - G09B 5/10: all student stations being capable of presenting the same information simultaneously (G09B5/14 takes precedence) - G09G 5/00: Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) - G09G 5/36: characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory - G09G 5/38: with means for controlling the display position - G02B 2027/014: {comprising information/image processing systems} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G09B: EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS (devices for psychotechnics or for testing reaction times A61B5/16; games, sports, amusements A63; projectors, projector screens G03B) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A display control device includes a first display control unit performing control so as to display a page, which is being displayed in a real space, in a first material as a presentation material used in a presentation by a presenter in a first position in a virtual reality space, a second display control unit performing control so as to display a second material in a second position which is different from the first position in the virtual reality space, and an operation input information acquisition unit acquiring first operation input information as operation input information which is input by a viewer experiencing the virtual reality space and which is about display of the second material, in which the second display control unit changes a display manner of the second material based on the first operation input information. ## Claims ### Claim 1 A display control device comprising: at least one memory storing instructions; and at least one processor configured to execute the instructions stored in the memory to: perform control so as to display a page, which is being displayed in a real space, of a first material as a presentation material used in a presentation by a presenter in a first position in a virtual reality space, the virtual reality space being a three-dimensional space; perform control so as to display a page of a second material in a second position which is different from the first position in the virtual reality space; acquire first operation input information as operation input information which is input by a viewer experiencing the virtual reality space and which is about display of the second material; and change a display manner of the second material based on the first operation input information. ### Claim 2 (depends on 1) The display control device according to claim 1, wherein the processor is further configured to execute the instructions to acquire second operation input information as operation input information which is input by a viewer experiencing the virtual reality space and which designates an explication object in a content of the second material, and display explication information as information explicating the explication object in the virtual reality space based on the second operation input information. ### Claim 3 (depends on 2) The display control device according to claim 2, wherein the processor is further configured to execute the instructions to acquire third operation input information as operation input information which is input by a viewer experiencing the virtual reality space and which designates an explication level, and perform switching to display of explication information at a level corresponding to the third operation input information. ### Claim 4 (depends on 1) The display control device according to claim 1, wherein the processor is further configured to execute the instructions to acquire fourth operation input information as operation input information which is input by a viewer experiencing the virtual reality space and which is about a comment on the first material or the second material, the fourth operation input information including a position of a comment object in a material and a comment content, and manage the position of the comment object and the comment content while associating the position of the comment object and the comment content together. ### Claim 5 (depends on 4) The display control device according to claim 4, wherein when the first material or the second material is displayed in the virtual reality space, the processor is further configured to execute the instructions to perform control so as to display the comment content in the virtual reality space while associating the comment content with the position of the comment object in the first material or the second material. ### Claim 6 (depends on 5) The display control device according to claim 5, wherein the fourth operation input information further includes identification information which identifies a viewer inputting a comment, and the processor is further configured to execute the instructions to manage the identification information, the position of the comment object, and the comment content while associating the identification information, the position of the comment object, and the comment content together and perform control about whether or not the comment content is displayed when the first material or the second material is displayed in the virtual reality space based on the identification information associated with the comment content. ### Claim 7 (depends on 1) The display control device according to claim 1, wherein the processor is further configured to execute the instructions to change pages of the second material as display objects based on the first operation input information. ### Claim 8 (depends on 1) The display control device according to claim 1, wherein the processor is further configured to execute the instructions to change at least either one of a display size of the second material or a display position of the second material based on the first operation input information. ### Claim 9 (depends on 1) The display control device according to claim 1, wherein the second material is the presentation material. ### Claim 10 (depends on 1) The display control device according to claim 1, wherein the second material is a different material from the presentation material. ### Claim 11 (depends on 1) The display control device according to claim 1, wherein the page of the first material is being displayed on a predetermined display device in the real space, the processor is further configured to execute the instructions to receive the page of the first material from a terminal device, the terminal device for outputting the presentation material to the predetermined display device, and the displayed page in the first position in the virtual reality space is synchronized with the displayed page on the predetermined display device. ### Claim 12 A display control method comprising: displaying a page, which is being displayed in a real space, of a first material as a presentation material used in a presentation by a presenter in a first position in a virtual reality space, the virtual reality space being a three-dimensional space; displaying a page of a second material in a second position which is different from the first position in the virtual reality space; and changing a display manner of the second material based on first operation input information as operation input information which is input by a viewer experiencing the virtual reality space and which is about display of the second material. ### Claim 13 A non-transitory computer-readable medium storing a program for causing a computer to execute: a first display control step of performing control so as to display a page, which is being displayed in a real space, of a first material as a presentation material used in a presentation by a presenter in a first position in a virtual reality space, the virtual reality space being a three-dimensional space; a second display control step of performing control so as to display a page of a second material in a second position which is different from the first position in the virtual reality space; and an operation input information acquisition step of acquiring first operation input information as operation input information which is input by a viewer experiencing the virtual reality space and which is about display of the second material, wherein in the second display control step, a display manner of the second material is changed based on the first operation input information.