# US 2019/0174016 A1 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174016 A1 - Document ID: US20190174016A1 - Status: Published application - Kind: A1 - Application number: 16/203,644 - Filed: 2018-11-29 - Published: 2019-06-06 - Earliest claimed: 2017-12-06 - Assignees: Fuji Xerox Co., Ltd. - Applicants: Fuji Xerox Co., Ltd. - Inventors: Hirotake SASAKI; Kentaro TAKANO; Daisuke YASUOKA; Keigo HATTORI; Mitsuo HAYASHI; Hiroki TERABE - Web page: https://patentgrep.com/patent/US20190174016A1 ## CPC - H04N 1/00352: {Input means (H04N1/00411 takes precedence; input arrangements for computers G06F3/00)} - G02B 27/0172: {characterised by optical features} - G06V 20/20: in augmented reality scenes - G06V 30/416: Extracting the logical structure, e.g. chapters, sections or page numbers; Identifying elements of the document, e.g. authors - H04N 1/00331: {with an apparatus performing optical character recognition (character recognition G06V30/10)} - G02B 2027/0138: {comprising image capture systems, e.g. camera} - G02B 2027/014: {comprising information/image processing systems} - G02B 2027/0141: {characterised by the informative content of the display} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING ## Abstract A display apparatus includes an acquisition section, a specification section, and a display controller. The acquisition section acquires page information indicative of a page of a reference destination of a book. The specification section specifies a location, which corresponds to the acquired page information, on a fore edge of the book. The display controller performs control such that an image indicative of the specified location on the fore edge is superimposedly displayed on the fore edge which is seen through a display provided in the display apparatus that is mounted on a user. ## Claims ### Claim 1 A display apparatus comprising: an acquisition section that acquires page information indicative of a page of a reference destination of a book; a specification section that specifies a location, which corresponds to the acquired page information, on a fore edge of the book; and a display controller that performs control such that an image indicative of the specified location on the fore edge is superimposedly displayed on the fore edge which is seen through a display provided in the display apparatus that is mounted on a user. ### Claim 2 A display apparatus comprising: an acquisition section that acquires page information indicative of a page of a reference destination of a book; a recognition section that recognizes page information indicative of an open page of the book; and a display controller that performs control such that an image indicative of the page of the reference destination is superimposedly displayed on the book which is seen through a display provided in the display apparatus that is mounted on a user in a case where the recognized page information is different from the acquired page information. ### Claim 3 (depends on 1) The display apparatus according to claim 1, further comprising: a reception section that receives error information according to a cause of stopping in a case where a process performed in another apparatus stops, wherein the acquisition section acquires the page information indicative of a page, in which the cause of stopping or a coping method is written, based on the error information. ### Claim 4 (depends on 2) The display apparatus according to claim 2, further comprising: a reception section that receives error information according to a cause of stopping in a case where a process performed in another apparatus stops, wherein the acquisition section acquires the page information indicative of a page, in which the cause of stopping or a coping method is written, based on the error information. ### Claim 5 (depends on 3) The display apparatus according to claim 3, wherein the display controller performs control such that the image is not displayed in a case where the reception section receives information which indicates that the process performed in another apparatus restarts. ### Claim 6 (depends on 4) The display apparatus according to claim 4, wherein the display controller performs control such that the image is not displayed in a case where the reception section receives information which indicates that the process performed in another apparatus restarts. ### Claim 7 (depends on 1) The display apparatus according to claim 1, further comprising: a recognition section that recognizes the page information indicative of the open page of the book, wherein the acquisition section acquires a spot of the reference destination together with the page information, and wherein the display controller performs control such that an image indicative of the spot of the reference destination is superimposedly displayed on the page recognized by the recognition section. ### Claim 8 (depends on 3) The display apparatus according to claim 3, further comprising: a recognition section that recognizes the page information indicative of the open page of the book, wherein the acquisition section acquires a spot of the reference destination together with the page information, and wherein the display controller performs control such that an image indicative of the spot of the reference destination is superimposedly displayed on the page recognized by the recognition section. ### Claim 9 (depends on 4) The display apparatus according to claim 4, further comprising: a recognition section that recognizes the page information indicative of the open page of the book, wherein the acquisition section acquires a spot of the reference destination together with the page information, and wherein the display controller performs control such that an image indicative of the spot of the reference destination is superimposedly displayed on the page recognized by the recognition section. ### Claim 10 (depends on 7) The display apparatus according to claim 7, wherein the display controller performs control such that an image indicative of the page of the reference destination relevant to an operation to be performed subsequent to an operation corresponding to the spot of the reference destination is superimposedly displayed on the fore edge. ### Claim 11 (depends on 8) The display apparatus according to claim 8, wherein the display controller performs control such that an image indicative of the page of the reference destination relevant to an operation to be performed subsequent to an operation corresponding to the spot of the reference destination is superimposedly displayed on the fore edge. ### Claim 12 (depends on 9) The display apparatus according to claim 9, wherein the display controller performs control such that an image indicative of the page of the reference destination relevant to an operation to be performed subsequent to an operation corresponding to the spot of the reference destination is superimposedly displayed on the fore edge. ### Claim 13 (depends on 10) The display apparatus according to claim 10, wherein an image indicative of a page corresponding to the subsequent operation is highlighted and superimposedly displayed in a case where the open page of the book is different from the page of the reference destination relevant to the subsequent operation to be performed. ### Claim 14 (depends on 11) The display apparatus according to claim 11, wherein an image indicative of a page corresponding to the subsequent operation is highlighted and superimposedly displayed in a case where the open page of the book is different from the page of the reference destination relevant to the subsequent operation to be performed. ### Claim 15 (depends on 12) The display apparatus according to claim 12, wherein an image indicative of a page corresponding to the subsequent operation is highlighted and superimposedly displayed in a case where the open page of the book is different from the page of the reference destination relevant to the subsequent operation to be performed. ### Claim 16 (depends on 7) The display apparatus according to claim 7, wherein the display controller performs control such that the image indicative of the page of the reference destination is not displayed in a case where the recognized page information is identical to the acquired page information. ### Claim 17 (depends on 1) The display apparatus according to claim 1, further comprising: a recognition section that recognizes page information indicative of an open page of the book, wherein the display controller performs control such that an image indicative of a spot of the reference destination of the open page is superimposedly displayed in a case where the recognized page information is identical to the acquired page information. ### Claim 18 A display apparatus comprising: a reception section that receives information which is displayed on a display screen of another apparatus; an acquisition section that acquires page information indicative of a page, which corresponds to the received information, of a reference destination of a book; a specification section that specifies a location, which corresponds to the acquired page information, on a fore edge of the book; and a display controller that performs control such that an image indicative of the specified location on the fore edge is superimposedly displayed on the fore edge which is seen through a display provided in the display apparatus that is mounted on a user. ### Claim 19 (depends on 18) The display apparatus according to claim 18, further comprising: a recognition section that recognizes the page information indicative of an open page of the book, wherein the acquisition section acquires a spot of the reference destination together with the page information, and wherein the display controller performs control such that an image indicative of the spot of the reference destination is superimposedly displayed on the page recognized by the recognition section. ### Claim 20 (depends on 1) The display apparatus according to claim 1, wherein the acquisition section acquires a plurality of pieces of page information indicative of a plurality of pages of the reference destinations and ranking information indicative of rankings of the reference destinations of the plurality of pages, wherein the specification section specifies a plurality of the locations, which correspond to the plurality of pieces of page information, on the fore edge of the book, and wherein the display controller performs control such that the images indicative of the plurality of specified locations on the fore edge and the rankings are superimposedly displayed on the fore edge.